1. CPC Sections
  2. CPC Section G
  3. CPC Class G01
  4. CPC Subclass G01J
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Version: 2023.08
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CPC
COOPERATIVE PATENT CLASSIFICATION
​​
G01J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY (light sources F21, H01J, H01K, H05B; investigating properties of materials by optical means G01N) [2023-08]
NOTES

  • This subclass covers the detection of the presence or absence of infrared, visible, or ultraviolet light, not otherwise provided for.
  • Attention is drawn to the Notes following the title of class G01.
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
G01J 1/00
Photometry, e.g. photographic exposure meter (spectrophotometry G01J 3/00; specially adapted for radiation pyrometry G01J 5/00 {; exposure meters built in cameras G03B 17/06}) [2017-08]
G01J 1/02
.
Details [2013-01]
G01J 1/0204
. .
{Compact construction} [2013-01]
G01J 1/0209
. . .
{Monolithic} [2013-01]
G01J 1/0214
. .
{Constructional arrangements for removing stray light} [2013-01]
G01J 1/0219
. .
{Electrical interface; User interface} [2013-01]
G01J 1/0223
. .
{Sample holders for photometry} [2013-01]
G01J 1/0228
. .
{Control of working procedures; Failure detection; Spectral bandwidth calculation} [2013-01]
G01J 1/0233
. .
{Handheld} [2013-01]
G01J 1/0238
. .
{making use of sensor-related data, e.g. for identification of sensor or optical parts} [2013-01]
G01J 1/0242
. .
{Control or determination of height or angle information of sensors or receivers; Goniophotometry} [2013-01]
G01J 1/0247
. .
{using a charging unit} [2013-01]
G01J 1/0252
. .
{Constructional arrangements for compensating for fluctuations caused by, e.g. temperature, or using cooling or temperature stabilization of parts of the device; Controlling the atmosphere inside a photometer; Purge systems, cleaning devices (protection against electromagnetic interferences G01J 2001/0276)} [2016-08]
G01J 2001/0257
. .
{portable} [2013-01]
G01J 2001/0261
. . .
{Pocket size; Card size} [2013-01]
G01J 1/0266
. .
{Field-of-view determination; Aiming or pointing of a photometer; Adjusting alignment; Encoding angular position; Size of the measurement area; Position tracking; Photodetection involving different fields of view for a single detector} [2013-01]
G01J 1/0271
. .
{Housings; Attachments or accessories for photometers} [2013-01]
G01J 2001/0276
. .
{Protection} [2013-01]
G01J 2001/028
. . .
{against liquid} [2013-01]
G01J 2001/0285
. . .
{against laser damage} [2013-01]
G01J 1/029
. .
{Multi-channel photometry} [2013-01]
G01J 1/0295
. .
{Constructional arrangements for removing other types of optical noise or for performing calibration} [2013-01]
G01J 1/04
. .
Optical or mechanical part {supplementary adjustable parts} [2017-08]
G01J 1/0403
. . .
{Mechanical elements; Supports for optical elements; Scanning arrangements} [2013-01]
G01J 1/0407
. . .
{Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings} [2013-01]
G01J 1/0411
. . . .
{using focussing or collimating elements, i.e. lenses or mirrors; Aberration correction} [2013-01]
G01J 1/0414
. . . .
{using plane or convex mirrors, parallel phase plates, or plane beam-splitters} [2013-01]
G01J 1/0418
. . . .
{using attenuators} [2013-01]
G01J 1/0422
. . . .
{using light concentrators, collectors or condensers} [2013-01]
G01J 1/0425
. . . .
{using optical fibers} [2013-01]
G01J 1/0429
. . . .
{using polarisation elements} [2013-01]
G01J 1/0433
. . . .
{using notch filters} [2013-01]
G01J 1/0437
. . . .
{using masks, aperture plates, spatial light modulators, spatial filters, e.g. reflective filters} [2013-01]
G01J 1/044
. . . .
{using shutters} [2013-01]
G01J 1/0444
. . . .
{using means for replacing an element by another, e.g. for replacing a filter or grating} [2013-01]
G01J 1/0448
. . . .
{Adjustable, e.g. focussing} [2013-01]
G01J 1/0451
. . . .
{using means for illuminating a slit efficiently, e.g. entrance slit of a photometer or entrance face of fiber} [2013-01]
G01J 1/0455
. . . .
{having a throughhole enabling the optical element to fulfil an additional optical function, e.g. a mirror or grating having a through-hole for a light collecting or light injecting optical fibre} [2013-01]
G01J 1/0459
. . . .
{using an optical amplifier of light or coatings to improve optical coupling} [2013-01]
G01J 1/0462
. . . .
{Slit arrangements} [2013-01]
G01J 1/0466
. . . .
{with a sighting port} [2013-01]
G01J 1/047
. . . .
{using extension/expansion of solids or fluids, change of resonant frequency or extinction effect} [2013-01]
G01J 1/0474
. . . .
{Diffusers (cavities G01J 2001/0481)} [2013-01]
G01J 1/0477
. . . .
{Prisms, wedges} [2013-01]
G01J 2001/0481
. . .
{Preset integrating sphere or cavity} [2013-01]
G01J 2001/0485
. . .
{Cosinus correcting or purposely modifying the angular response of a light sensor} [2013-01]
G01J 1/0488
. . .
{with spectral filtering} [2013-01]
G01J 1/0492
. . . .
{using at least two different filters} [2013-01]
G01J 2001/0496
. . . .
{using fiber Bragg gratings} [2013-01]
G01J 1/06
. . .
Restricting the angle of incident light [2013-01]
G01J 2001/061
. . . .
{Baffles} [2013-01]
G01J 2001/062
. . . .
{by fibre-optic packed bundle} [2013-01]
G01J 2001/063
. . . .
{with selectable field of view} [2013-01]
G01J 2001/065
. . . . .
{by changing elements} [2013-01]
G01J 2001/066
. . . . .
{with an aiming optical device} [2013-01]
G01J 2001/067
. . . .
{for angle scan} [2013-01]
G01J 2001/068
. . . . .
{by diaphragm or the like} [2013-01]
G01J 1/08
. .
Arrangements of light sources specially adapted for photometry {standard sources, also using luminescent or radioactive material} [2013-01]
G01J 2001/083
. . .
{Testing response of detector} [2013-01]
G01J 2001/086
. . .
{Calibrating drift correction} [2013-01]
G01J 1/10
.
by comparison with reference light or electric value {provisionally void} [2013-01]
G01J 1/12
. .
using wholly visual means (G01J 1/20 takes precedence) [2013-01]
G01J 1/122
. . .
{Visual exposure meters for determining the exposure time in photographical recording or reproducing} [2013-01]
G01J 1/124
. . . .
{based on the comparison of the intensity of measured light with a comparison source or comparison illuminated surface} [2013-01]
G01J 1/126
. . . . .
{for enlarging apparatus} [2013-01]
G01J 1/128
. . . . .
{for copy- or printing apparatus} [2013-01]
G01J 1/14
. . .
using comparison with a surface of graded brightness, {(e.g. for view taking; for analytical applications G01N 21/293)} [2013-01]
G01J 1/16
. .
using electric radiation detectors (G01J 1/20 takes precedence) [2013-01]
G01J 2001/1605
. . .
{Null method} [2013-01]
G01J 2001/161
. . .
{Ratio method, i.e. Im/Ir} [2013-01]
G01J 2001/1615
. . . .
{Computing a difference/sum ratio, i.e. (Im - Ir) / (Im + Ir)} [2013-01]
G01J 2001/1621
. . . .
{Comparing a duty ratio of pulses} [2013-01]
G01J 1/1626
. . .
{Arrangements with two photodetectors, the signals of which are compared} [2013-01]
G01J 2001/1631
. . . .
{Bridge circuit} [2013-01]
G01J 2001/1636
. . . .
{one detector directly monitoring the source, e.g. also impulse time controlling} [2013-01]
G01J 2001/1642
. . . . .
{and acting on the detecting circuit} [2013-01]
G01J 2001/1647
. . . .
{one signal maintained constant} [2013-01]
G01J 2001/1652
. . . .
{one detector being transparent before the other one} [2013-01]
G01J 2001/1657
. . . .
{one signal being spectrally modified, e.g. for UV} [2013-01]
G01J 2001/1663
. . . .
{two detectors of different sensitivity} [2013-01]
G01J 2001/1668
. . .
{the measuring signal itself varying in time, e.g. periodic, for example blood pulsation} [2013-01]
G01J 2001/1673
. . .
{using a reference sample} [2013-01]
G01J 2001/1678
. . .
{Comparing time separated signals, i.e. chopped} [2013-01]
G01J 2001/1684
. . . .
{and selecting also a DC level from the signal} [2013-01]
G01J 2001/1689
. . . .
{one separated signal being processed differently} [2013-01]
G01J 2001/1694
. . . .
{with a signal from on/off switched light source} [2013-01]
G01J 1/18
. . .
using comparison with a reference electric value [2013-01]
G01J 2001/182
. . . .
{with SH sample and hold circuits} [2013-01]
G01J 2001/184
. . . . .
{on a succession of signals} [2013-01]
G01J 2001/186
. . . .
{Comparison or correction from an electric source within the processing circuit} [2013-01]
G01J 2001/188
. . . . .
{on pulse train} [2013-01]
G01J 1/20
. .
intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle [2013-01]
G01J 1/22
. . .
using a variable element in the light-path, e.g. filter, polarising means (G01J 1/34 takes precedence) [2013-01]
G01J 1/24
. . . .
using electric radiation detectors [2013-01]
G01J 2001/242
. . . . .
{Filter wheel, i.e. absorption filter series graduated} [2013-01]
G01J 2001/245
. . . . .
{with two or more separate attenuated steps} [2013-01]
G01J 2001/247
. . . . .
{of spectral wedge type} [2013-01]
G01J 1/26
. . . . .
adapted for automatic variation of the measured or reference value (regulation of light intensity G05D 25/00) [2013-01]
G01J 1/28
. . .
using variation of intensity or distance of source (G01J 1/34 takes precedence) [2013-01]
G01J 1/30
. . . .
using electric radiation detectors [2013-01]
G01J 1/32
. . . . .
adapted for automatic variation of the measured or reference value (regulation of light intensity G05D 25/00) [2013-01]
G01J 1/34
. . .
using separate light paths used alternately or sequentially, e.g. flicker [2013-01]
G01J 1/36
. . . .
using electric radiation detectors [2013-01]
G01J 2001/363
. . . . .
{Chopper stabilisation} [2013-01]
G01J 2001/366
. . . . .
{Balancing two paths} [2013-01]
G01J 1/38
.
using wholly visual means (G01J 1/10 takes precedence) [2013-01]
G01J 1/40
. .
using limit or visibility or extinction effect [2013-01]
G01J 1/42
.
using electric radiation detectors (optical or mechanical part G01J 1/04; by comparison with a reference light or electric value G01J 1/10) [2013-01]
G01J 1/4204
. .
{with determination of ambient light (solar light G01J 2001/4266)} [2013-01]
G01J 1/4209
. .
{Photoelectric exposure meters for determining the exposure time in recording or reproducing} [2013-01]
G01J 1/4214
. . .
{specially adapted for view-taking apparatus} [2013-01]
G01J 1/4219
. . .
{specially adapted for enlargers} [2013-01]
G01J 1/4223
. . .
{specially adapted for copy - or printing apparatus} [2013-01]
G01J 1/4228
. .
{arrangements with two or more detectors, e.g. for sensitivity compensation} [2013-01]
G01J 2001/4233
. . .
{with selection of detector} [2013-01]
G01J 2001/4238
. .
{Pulsed light} [2013-01]
G01J 2001/4242
. .
{Modulated light, e.g. for synchronizing source and detector circuit} [2013-01]
G01J 2001/4247
. .
{for testing lamps or other light sources} [2013-01]
G01J 2001/4252
. . .
{for testing LED's} [2013-01]
G01J 1/4257
. .
{applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam (monitoring arrangements for lasers in general H01S 3/0014)} [2013-01]
G01J 2001/4261
. . .
{Scan through beam in order to obtain a cross-sectional profile of the beam} [2013-01]
G01J 2001/4266
. .
{for measuring solar light} [2013-01]
G01J 2001/4271
. . .
{Pyrrheliometer} [2013-01]
G01J 2001/4276
. . .
{Solar energy integrator over time} [2013-01]
G01J 2001/428
. . .
{for sunlight scattered by atmosphere} [2013-01]
G01J 2001/4285
. . .
{Pyranometer, i.e. integrating over space} [2013-01]
G01J 1/429
. .
{applied to measurement of ultraviolet light (using counting tubes G01T)} [2013-01]
G01J 2001/4295
. .
{using a physical effect not covered by other subgroups of G01J 1/42} [2013-01]
G01J 1/44
. .
Electric circuits {(for command of an exposure part G03B 7/02)} [2013-01]
G01J 2001/4406
. . .
{Plural ranges in circuit, e.g. switchable ranges; Adjusting sensitivity selecting gain values} [2013-01]
G01J 2001/4413
. . .
{Type} [2013-01]
G01J 2001/442
. . . .
{Single-photon detection or photon counting} [2013-01]
G01J 2001/4426
. . . .
{with intensity to frequency or voltage to frequency conversion [IFC or VFC]} [2013-01]
G01J 2001/4433
. . . .
{Peak sensing} [2013-01]
G01J 2001/444
. . .
{Compensating; Calibrating, e.g. dark current, temperature drift, noise reduction or baseline correction; Adjusting} [2013-01]
G01J 2001/4446
. . .
{Type of detector} [2013-01]
G01J 2001/4453
. . . .
{PMT} [2013-01]
G01J 2001/446
. . . .
{Photodiode} [2013-01]
G01J 2001/4466
. . . . .
{Avalanche} [2013-01]
G01J 2001/4473
. . . .
{Phototransistor} [2013-01]
G01J 2001/448
. . . .
{Array [CCD]} [2013-01]
G01J 2001/4486
. . . .
{Streak tube} [2013-01]
G01J 2001/4493
. . . .
{with image intensifyer tube [IIT]} [2013-01]
G01J 1/46
. . .
using a capacitor [2013-01]
G01J 1/48
.
using chemical effects [2013-01]
G01J 1/50
. .
using change in colour of an indicator, e.g. actinometer [2013-01]
G01J 1/52
. .
using photographic effects [2013-01]
G01J 1/54
. .
by observing photo-reactions between gases [2013-01]
G01J 1/56
.
using radiation pressure or radiometer effect [2013-01]
G01J 1/58
.
using luminescence generated by light [2013-01]
G01J 1/60
.
by measuring the pupil of the eye [2013-01]
G01J 3/00
Spectrometry; Spectrophotometry; Monochromators; Measuring colours [2017-08]
G01J 2003/003
.
{Comparing spectra of two light sources} [2013-01]
G01J 2003/006
.
{Fundamentals or review articles} [2013-01]
G01J 3/02
.
Details [2013-01]
G01J 3/0202
. .
{Mechanical elements; Supports for optical elements} [2013-01]
G01J 3/0205
. .
{Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows} [2016-11]
G01J 3/0208
. . .
{using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction} [2013-01]
G01J 3/021
. . .
{using plane or convex mirrors, parallel phase plates, or particular reflectors} [2013-01]
G01J 3/0213
. . .
{using attenuators} [2013-01]
G01J 3/0216
. . .
{using light concentrators or collectors or condensers} [2013-01]
G01J 3/0218
. . .
{using optical fibers} [2013-01]
G01J 3/0221
. . . .
{the fibers defining an entry slit} [2013-01]
G01J 3/0224
. . .
{using polarising or depolarising elements} [2013-01]
G01J 3/0227
. . .
{using notch filters} [2013-01]
G01J 3/0229
. . .
{using masks, aperture plates, spatial light modulators or spatial filters, e.g. reflective filters} [2013-01]
G01J 3/0232
. . .
{using shutters} [2013-01]
G01J 3/0235
. . .
{using means for replacing an element by another, for replacing a filter or a grating} [2013-01]
G01J 3/0237
. . .
{Adjustable, e.g. focussing} [2013-01]
G01J 3/024
. . .
{using means for illuminating a slit efficiently (e.g. entrance slit of a spectrometer or entrance face of fiber)} [2013-01]
G01J 3/0243
. . .
{having a through-hole enabling the optical element to fulfil an additional optical function, e.g. a mirror or grating having a throughhole for a light collecting or light injecting optical fiber} [2013-01]
G01J 3/0245
. . .
{using an optical amplifier of light, e.g. doped fiber} [2013-01]
G01J 3/0248
. . .
{using a sighting port, e.g. camera or human eye} [2013-01]
G01J 3/0251
. . .
{Colorimeters making use of an integrating sphere} [2013-01]
G01J 3/0254
. . .
{Spectrometers, other than colorimeters, making use of an integrating sphere} [2013-01]
G01J 3/0256
. .
{Compact construction} [2013-01]
G01J 3/0259
. . .
{Monolithic} [2013-01]
G01J 3/0262
. .
{Constructional arrangements for removing stray light} [2013-01]
G01J 3/0264
. .
{Electrical interface; User interface} [2013-01]
G01J 3/0267
. .
{Sample holders for colorimetry} [2013-01]
G01J 3/027
. .
{Control of working procedures of a spectrometer; Failure detection; Bandwidth calculation} [2013-01]
G01J 3/0272
. .
{Handheld} [2013-01]
G01J 3/0275
. .
{making use of sensor-related data, e.g. for identification of sensor parts or optical elements} [2016-11]
G01J 3/0278
. .
{Control or determination of height or angle information for sensors or receivers} [2013-01]
G01J 2003/0281
. .
{slitless} [2013-01]
G01J 3/0283
. .
{using a charging unit} [2013-01]
G01J 3/0286
. .
{Constructional arrangements for compensating for fluctuations caused by temperature, humidity or pressure, or using cooling or temperature stabilization of parts of the device; Controlling the atmosphere inside a spectrometer, e.g. vacuum} [2013-01]
G01J 3/0289
. .
{Field-of-view determination; Aiming or pointing of a spectrometer; Adjusting alignment; Encoding angular position; Size of measurement area; Position tracking} [2013-01]
G01J 3/0291
. .
{Housings; Spectrometer accessories; Spatial arrangement of elements, e.g. folded path arrangements} [2013-01]
G01J 3/0294
. .
{Multi-channel spectroscopy} [2013-01]
G01J 3/0297
. .
{Constructional arrangements for removing other types of optical noise or for performing calibration} [2013-01]
G01J 3/04
. .
Slit arrangements {slit adjustment} [2013-01]
G01J 2003/042
. . .
{Slit wheel} [2013-01]
G01J 2003/045
. . .
{Sequential slits; Multiple slits} [2013-01]
G01J 2003/047
. . .
{Configuration of two or more entry or exit slits for predetermined delta-lambda} [2013-01]
G01J 3/06
. .
Scanning arrangements {arrangements for order-selection} [2013-01]
G01J 2003/061
. . .
{Mechanisms, e.g. sine bar} [2013-01]
G01J 2003/062
. . .
{motor-driven} [2013-01]
G01J 2003/063
. . . .
{Step motor} [2013-01]
G01J 2003/064
. . .
{Use of other elements for scan, e.g. mirror, fixed grating} [2013-01]
G01J 2003/065
. . . .
{Use of fibre scan for spectral scan} [2013-01]
G01J 2003/066
. . .
{Microprocessor control of functions, e.g. slit, scan, bandwidth during scan} [2013-01]
G01J 2003/067
. . .
{Use of plane parallel plate, e.g. small scan, wobble} [2013-01]
G01J 2003/068
. . .
{tuned to preselected wavelengths} [2013-01]
G01J 2003/069
. . .
{Complex motion, e.g. rotation of grating and correcting translation} [2013-01]
G01J 3/08
. .
Beam switching arrangements [2013-01]
G01J 3/10
. .
Arrangements of light sources specially adapted for spectrometry or colorimetry [2013-01]
G01J 2003/102
. . .
{Plural sources} [2013-01]
G01J 2003/104
. . . .
{Monochromatic plural sources} [2013-01]
G01J 2003/106
. . . .
{the two sources being alternating or selectable, e.g. in two ranges or line:continuum} [2013-01]
G01J 3/108
. . .
{for measurement in the infrared range} [2023-08]
G01J 3/12
.
Generating the spectrum; Monochromators [2013-01]
G01J 2003/1204
. .
{Grating and filter} [2013-01]
G01J 2003/1208
. .
{Prism and grating} [2013-01]
G01J 2003/1213
. .
{Filters in general, e.g. dichroic, band} [2013-01]
G01J 2003/1217
. . .
{Indexed discrete filters or choppers} [2013-01]
G01J 2003/1221
. . .
{Mounting; Adjustment} [2013-01]
G01J 2003/1226
. .
{Interference filters} [2013-01]
G01J 2003/123
. . .
{Indexed discrete filters} [2013-01]
G01J 2003/1234
. . .
{Continuously variable IF [CVIF]; Wedge type} [2013-01]
G01J 2003/1239
. . .
{and separate detectors} [2013-01]
G01J 2003/1243
. . .
{Pivoting IF or other position variation} [2013-01]
G01J 2003/1247
. . .
{Tuning} [2013-01]
G01J 2003/1252
. . .
{Using "resonance cell", e.g. Na vapor} [2013-01]
G01J 3/1256
. .
{using acousto-optic tunable filter; (acousto-optic elements or systems G02F 1/11, G02F 1/33)} [2013-01]
G01J 2003/126
. .
{Focal isolation type} [2013-01]
G01J 2003/1265
. .
{the wavelengths being separated in time, e.g. through optical fibre array} [2013-01]
G01J 2003/1269
. .
{Electrooptic filter} [2013-01]
G01J 2003/1273
. .
{Order selection} [2013-01]
G01J 2003/1278
. .
{Mask with spectral selection} [2013-01]
G01J 2003/1282
. .
{Spectrum tailoring} [2013-01]
G01J 2003/1286
. .
{Polychromator in general} [2013-01]
G01J 2003/1291
. .
{polarised, birefringent} [2013-01]
G01J 2003/1295
. .
{Plural entry slits, e.g. for different incidences} [2013-01]
G01J 3/14
. .
using refracting elements, e.g. prisms (G01J 3/18, G01J 3/26 take precedence {prisms per se G02B 5/04}) [2013-01]
G01J 2003/145
. . .
{Prism systems for straight view} [2013-01]
G01J 3/16
. . .
with autocollimation [2013-01]
G01J 3/18
. .
using diffraction elements, e.g. grating (gratings per se G02B) [2013-01]
G01J 3/1804
. . .
{Plane gratings} [2013-01]
G01J 3/1809
. . .
{Echelle gratings} [2013-01]
G01J 2003/1814
. . .
{Double monochromator} [2013-01]
G01J 2003/1819
. . . .
{Double pass monochromator} [2013-01]
G01J 2003/1823
. . . .
{substractive} [2013-01]
G01J 2003/1828
. . .
{with order sorter or prefilter} [2013-01]
G01J 3/1833
. . .
{Grazing incidence} [2013-01]
G01J 3/1838
. . .
{Holographic gratings} [2013-01]
G01J 2003/1842
. . .
{Types of grating} [2013-01]
G01J 2003/1847
. . . .
{Variable spacing} [2013-01]
G01J 2003/1852
. . . .
{Cylindric surface} [2013-01]
G01J 2003/1857
. . . .
{Toroid surface} [2013-01]
G01J 2003/1861
. . . .
{Transmission gratings} [2013-01]
G01J 2003/1866
. . .
{Monochromator for three or more wavelengths} [2013-01]
G01J 2003/1871
. . . .
{Duochromator} [2013-01]
G01J 2003/1876
. . . .
{Polychromator} [2013-01]
G01J 2003/188
. . .
{Constant deviation} [2013-01]
G01J 2003/1885
. . .
{Holder for interchangeable gratings, e.g. at different ranges of wavelengths} [2013-01]
G01J 3/189
. . .
{using at least one grating in an off-plane configuration} [2013-01]
G01J 3/1895
. . .
{using fiber Bragg gratings or gratings integrated in a waveguide} [2013-01]
G01J 3/20
. . .
Rowland circle spectrometers [2013-01]
G01J 3/22
. . .
Littrow mirror spectrometers [2016-11]
G01J 3/24
. . .
using gratings profiled to favour a specific order [2013-01]
G01J 3/26
. .
using multiple reflection, e.g. Fabry-Perot interferometer, variable interference filters [2013-01]
G01J 2003/262
. . .
{Double pass; Multiple pass} [2013-01]
G01J 2003/265
. . .
{Read out, e.g. polychromator} [2013-01]
G01J 2003/267
. . .
{of the SISAM type} [2013-01]
G01J 3/28
.
Investigating the spectrum (using colour filters G01J 3/51) [2013-01]
G01J 3/2803
. .
{using photoelectric array detector} [2013-01]
G01J 2003/2806
. . .
{Array and filter array} [2013-01]
G01J 2003/2809
. . . .
{Array and correcting filter} [2013-01]
G01J 2003/2813
. . .
{2D-array} [2013-01]
G01J 2003/2816
. . .
{Semiconductor laminate layer} [2013-01]
G01J 2003/282
. . .
{Modified CCD or like} [2013-01]
G01J 3/2823
. .
{Imaging spectrometer} [2013-01]
G01J 2003/2826
. . .
{Multispectral imaging, e.g. filter imaging} [2013-01]
G01J 2003/283
. .
{computer-interfaced} [2013-01]
G01J 2003/2833
. . .
{and memorised spectra collection} [2013-01]
G01J 2003/2836
. . .
{Programming unit, i.e. source and date processing} [2013-01]
G01J 2003/284
. . .
{Spectral construction} [2013-01]
G01J 2003/2843
. . .
{Processing for eliminating interfering spectra} [2013-01]
G01J 3/2846
. .
{using modulation grid; Grid spectrometers} [2013-01]
G01J 2003/285
. . .
{Hadamard transformation} [2013-01]
G01J 2003/2853
. .
{Averaging successive scans or readings} [2013-01]
G01J 2003/2856
. . .
{and calculation of standard deviation} [2013-01]
G01J 2003/2859
. .
{Peak detecting in spectrum} [2013-01]
G01J 2003/2863
. . .
{and calculating peak area} [2013-01]
G01J 2003/2866
. .
{Markers; Calibrating of scan} [2013-01]
G01J 2003/2869
. . .
{Background correcting} [2013-01]
G01J 2003/2873
. . .
{Storing reference spectrum} [2013-01]
G01J 2003/2876
. . .
{Correcting linearity of signal} [2013-01]
G01J 2003/2879
. . .
{Calibrating scan, e.g. Fabry Perot interferometer} [2013-01]
G01J 2003/2883
. . .
{Correcting overlapping} [2013-01]
G01J 2003/2886
. .
{Investigating periodic spectrum} [2013-01]
G01J 3/2889
. .
{Rapid scan spectrometers; Time resolved spectrometry} [2013-01]
G01J 2003/2893
. . .
{with rotating grating} [2013-01]
G01J 2003/2896
. .
{Vidicon, image intensifier tube} [2013-01]
G01J 3/30
. .
Measuring the intensity of spectral lines directly on the spectrum itself (G01J 3/42, G01J 3/44 take precedence) [2017-08]
G01J 3/32
. . .
Investigating bands of a spectrum in sequence by a single detector [2013-01]
G01J 2003/323
. . . .
{Comparing line:background} [2013-01]
G01J 2003/326
. . . .
{Scanning mask, plate, chopper, e.g. small spectrum interval} [2013-01]
G01J 3/36
. . .
Investigating two or more bands of a spectrum by separate detectors [2013-01]
G01J 3/40
. .
Measuring the intensity of spectral lines by determining density of a photograph of the spectrum; Spectrography (G01J 3/42, G01J 3/44 take precedence) [2013-01]
G01J 3/42
. .
Absorption spectrometry; Double beam spectrometry; Flicker spectrometry; Reflection spectrometry (beam switching arrangements G01J 3/08) [2013-01]
G01J 2003/421
. . .
{Single beam} [2013-01]
G01J 2003/423
. . .
{Spectral arrangements using lasers, e.g. tunable} [2013-01]
G01J 2003/425
. . .
{Reflectance} [2013-01]
G01J 3/427
. . .
Dual wavelengths spectrometry [2013-01]
G01J 2003/4275
. . . .
{Polarised dual wavelength spectrometry} [2013-01]
G01J 3/433
. . .
Modulation spectrometry; Derivative spectrometry [2013-01]
G01J 2003/4332
. . . .
{frequency-modulated} [2018-01]
G01J 2003/4334
. . . .
{by modulation of source, e.g. current modulation} [2013-01]
G01J 2003/4336
. . . .
{by magnetic modulation, e.g. Zeeman effect} [2013-01]
G01J 3/4338
. . . .
{Frequency modulated spectrometry} [2013-01]
G01J 3/44
. .
Raman spectrometry; Scattering spectrometry {; Fluorescence spectrometry} [2017-08]
G01J 3/4406
. . .
{Fluorescence spectrometry} [2013-01]
G01J 3/4412
. . .
{Scattering spectrometry (particle sizing by light scattering G01N 15/0205; optical velocimetry of particles G01P 5/20, G01P 5/26)} [2013-01]
G01J 2003/4418
. . . .
{Power spectrum} [2013-01]
G01J 2003/4424
. . .
{Fluorescence correction for Raman spectrometry} [2013-01]
G01J 3/443
. .
Emission spectrometry [2013-01]
G01J 2003/4435
. . .
{Measuring ratio of two lines, e.g. internal standard} [2013-01]
G01J 3/447
. .
Polarisation spectrometry [2013-01]
G01J 3/45
. .
Interferometric spectrometry [2013-01]
G01J 2003/451
. . .
{Dispersive interferometric spectrometry} [2013-01]
G01J 2003/452
. . .
{with recording of image of spectral transformation, e.g. hologram} [2013-01]
G01J 3/453
. . .
by correlation of the amplitudes [2013-01]
G01J 3/4531
. . . .
{Devices without moving parts} [2013-01]
G01J 3/4532
. . . .
{Devices of compact or symmetric construction (G01J 3/4531 takes precedence)} [2013-01]
G01J 2003/4534
. . . .
{Interferometer on illuminating side} [2013-01]
G01J 3/4535
. . . .
{Devices with moving mirror (G01J 3/4532 takes precedence)} [2013-01]
G01J 3/4537
. . . .
{Devices with refractive scan} [2013-01]
G01J 2003/4538
. . . .
{Special processing} [2013-01]
G01J 3/457
. .
Correlation spectrometry, e.g. of the intensity (G01J 3/453 takes precedence) [2013-01]
G01J 3/46
.
Measurement of colour; Colour measuring devices, e.g. colorimeters (measuring colour temperature G01J 5/60) [2013-01]
G01J 3/461
. .
{with colour spinners} [2013-01]
G01J 3/462
. .
{Computing operations in or between colour spaces; Colour management systems} [2013-01]
G01J 3/463
. .
{Colour matching} [2013-01]
G01J 3/465
. .
{taking into account the colour perception of the eye; using tristimulus detection} [2013-01]
G01J 2003/466
. .
{Coded colour; Recognition of predetermined colour; Determining proximity to predetermined colour} [2013-01]
G01J 2003/467
. .
{Colour computing} [2013-01]
G01J 2003/468
. .
{of objects containing fluorescent agent} [2013-01]
G01J 3/50
. .
using electric radiation detectors [2013-01]
G01J 3/501
. . .
{Colorimeters using spectrally-selective light sources, e.g. LEDs} [2013-01]
G01J 3/502
. . .
{using a dispersive element, e.g. grating, prism} [2013-01]
G01J 2003/503
. . .
{Densitometric colour measurements} [2013-01]
G01J 3/504
. . .
{Goniometric colour measurements, for example measurements of metallic or flake based paints} [2013-01]
G01J 3/505
. . .
{measuring the colour produced by lighting fixtures other than screens, monitors, displays or CRTs} [2013-01]
G01J 3/506
. . .
{measuring the colour produced by screens, monitors, displays or CRTs} [2013-01]
G01J 2003/507
. . .
{the detectors being physically selective} [2013-01]
G01J 3/508
. . .
{measuring the colour of teeth} [2013-01]
G01J 3/51
. . .
using colour filters [2013-01]
G01J 3/513
. . . .
{having fixed filter-detector pairs} [2013-01]
G01J 2003/516
. . . . .
{with several stacked filters or stacked filter-detector pairs} [2013-01]
G01J 3/52
. .
using colour charts [2013-01]
G01J 3/522
. . .
{circular colour charts} [2013-01]
G01J 3/524
. . .
{Calibration of colorimeters} [2013-01]
G01J 3/526
. . .
{for choosing a combination of different colours, e.g. to produce a pleasing effect for an observer} [2013-01]
G01J 3/528
. . . .
{using colour harmony theory} [2013-01]
G01J 4/00
Measuring polarisation of light [2023-05]
G01J 4/02
.
Polarimeters of separated-field type; Polarimeters of half-shadow type [2013-01]
G01J 4/04
.
Polarimeters using electric detection means (G01J 4/02 takes precedence) [2013-01]
​
G01J 5/00
Radiation pyrometry, e.g. infrared or optical thermometry [2022-01]
WARNING

G01J 5/0003
.
{for sensing the radiant heat transfer of samples, e.g. emittance meter} [2013-01]
G01J 5/0007
. .
{of wafers or semiconductor substrates, e.g. using Rapid Thermal Processing} [2013-01]
G01J 5/0011
. .
{Ear thermometers (G01J 5/021 and G01J 5/049 take precedence)} [2013-01]
G01J 5/0014
.
{for sensing the radiation from gases, flames} [2013-01]
G01J 5/0018
. .
{Flames, plasma or welding} [2013-01]
G01J 5/0022
.
{for sensing the radiation of moving bodies} [2013-01]
G01J 5/0025
. .
{Living bodies (ear thermometers G01J 5/0011; detecting, measuring or recording for diagnostic purposes A61B 5/00)} [2013-01]
G01J 2005/0029
. .
{Sheet} [2013-01]
G01J 2005/0033
. .
{Wheel} [2013-01]
G01J 5/0037
.
{for sensing the heat emitted by liquids} [2013-01]
G01J 5/004
. .
{by molten metals} [2013-01]
G01J 5/0044
.
{Furnaces, ovens, kilns (G01J 5/0007, G01J 5/004 take precedence)} [2013-01]
G01J 5/0066
.
{for hot spots detection} [2013-01]
G01J 5/007
.
{for earth observation} [2013-01]
G01J 2005/0074
.
{having separate detection of emissivity} [2013-01]
G01J 2005/0077
.
{Imaging} [2013-01]
G01J 5/0088
.
{in turbines} [2013-01]
G01J 2005/0092
.
{Temperature by averaging, e.g. by scan (thermography G01J 5/48)} [2022-01]
G01J 5/0096
.
{for measuring wires, electrical contacts or electronic systems} [2013-01]
​
G01J 5/02
.
Constructional details [2022-01]
WARNING

G01J 5/0205
. .
{Mechanical elements; Supports for optical elements} [2013-01]
G01J 5/021
. .
{Probe covers for thermometers, e.g. tympanic thermometers; Containers for probe covers; Disposable probes} [2013-01]
G01J 5/0215
. .
{Compact construction} [2013-01]
G01J 5/022
. . .
{Monolithic} [2013-01]
G01J 5/0225
. .
{Shape of the cavity itself or of elements contained in or suspended over the cavity} [2013-01]
G01J 5/023
. . .
{Particular leg structure or construction or shape; Nanotubes} [2013-01]
G01J 5/0235
. . .
{Spacers, e.g. for avoidance of stiction} [2013-01]
G01J 5/024
. . .
{Special manufacturing steps or sacrificial layers or layer structures} [2013-01]
G01J 5/0245
. . .
{for performing thermal shunt} [2013-01]
G01J 5/025
. .
{Interfacing a pyrometer to an external device or network; User interface} [2013-01]
G01J 5/0255
. .
{Sample holders for pyrometry; Cleaning of sample (using a gas purge G01J 5/051)} [2022-01]
​
G01J 5/026
. .
{Control of working procedures of a pyrometer, other than calibration; Bandwidth calculation; Gain control} [2022-01]
WARNING

G01J 5/0265
. .
{Handheld, portable (ear thermometers G01J 5/049)} [2013-01]
G01J 5/027
. .
{making use of sensor-related data, e.g. for identification of sensor parts or optical elements} [2013-01]
G01J 5/0275
. .
{Control or determination of height or distance or angle information for sensors or receivers} [2013-01]
G01J 5/028
. .
{using a charging unit or battery} [2013-01]
G01J 5/0295
. .
{Nulling devices or absolute detection} [2013-01]
G01J 5/03
. .
Arrangements for indicating or recording specially adapted for radiation pyrometers [2022-01]
G01J 5/04
. .
Casings [2022-01]
G01J 5/041
. . .
{Mountings in enclosures or in a particular environment} [2013-01]
G01J 5/042
. . . .
{High-temperature environment (G01J 5/0007, G01J 5/0044, G01J 5/0088 and G01J 5/004 take precedence)} [2013-01]
G01J 5/044
. . . .
{Environment with strong vibrations or shocks} [2013-01]
G01J 5/045
. . . .
{Sealings; Vacuum enclosures; Encapsulated packages; Wafer bonding structures; Getter arrangements (getter arrangements per se H01L 23/26 and H01L 21/3221)} [2013-01]
G01J 5/046
. . .
{Materials; Selection of thermal materials} [2013-01]
G01J 5/047
. . .
{Mobile mounting; Scanning arrangements} [2013-01]
G01J 5/048
. . .
{Protective parts} [2013-01]
G01J 5/049
. . .
{Casings for tympanic thermometers} [2013-01]
​
G01J 5/05
. .
Means for preventing contamination of the components of the optical system; Means for preventing obstruction of the radiation path [2022-01]
WARNING

G01J 5/051
. . .
{using a gas purge} [2022-01]
G01J 5/06
. .
Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity (for adjusting of solid angle of collected radiation G01J 5/07; means for wavelength selection G01J 5/0801) [2022-01]
G01J 5/061
. . .
by controlling the temperature of the apparatus or parts thereof, e.g. using cooling means or thermostats [2022-01]
G01J 2005/062
. . . .
{Peltier} [2022-01]
G01J 2005/063
. . . .
{Heating; Thermostating} [2022-01]
​
G01J 5/064
. . .
{Ambient temperature sensor; Housing temperature sensor; Constructional details thereof} [2022-01]
WARNING

G01J 2005/065
. . .
{by shielding} [2013-01]
G01J 2005/066
. . .
{Differential arrangement, i.e. sensitive/not sensitive} [2013-01]
G01J 5/068
. . .
by controlling parameters other than temperature [2022-01]
G01J 5/07
. .
Arrangements for adjusting the solid angle of collected radiation, e.g. adjusting or orienting field of view, tracking position or encoding angular position (optical collimating elements G01J 5/0806) [2022-01]
​
G01J 5/08
. .
Optical arrangements [2022-01]
WARNING

​
G01J 5/0801
. . .
Means for wavelength selection or discrimination [2022-01]
WARNING

G01J 5/0802
. . . .
Optical filters [2022-01]
G01J 5/08021
. . . . .
{Notch filters} [2022-01]
​
G01J 5/0803
. . .
Arrangements for time-dependent attenuation of radiation signals [2022-01]
WARNING

​
G01J 5/0804
. . . .
Shutters [2022-01]
WARNING

​
G01J 5/0805
. . . .
Means for chopping radiation [2022-01]
WARNING

G01J 5/0806
. . .
Focusing or collimating elements, e.g. lenses or concave mirrors [2022-01]
​
G01J 5/0808
. . .
Convex mirrors [2022-01]
WARNING

  • Group G01J 5/0808 is impacted by reclassification into groups G01J 5/0813 and G01J 5/0814.
    All groups listed in this Warning should be considered in order to perform a complete search.
​
G01J 5/0813
. . .
Planar mirrors; Parallel phase plates [2022-01]
WARNING

​
G01J 5/0814
. . .
{Particular reflectors, e.g. faceted or dichroic mirrors} [2022-01]
WARNING

G01J 5/0815
. . .
{Light concentrators, collectors or condensers} [2022-01]
​
G01J 5/0816
. . .
{using attenuators} [2022-01]
WARNING

G01J 5/0818
. . .
Waveguides [2022-01]
G01J 5/0821
. . . .
Optical fibres [2022-01]
G01J 5/0831
. . .
Masks; Aperture plates; Spatial light modulators [2022-01]
G01J 5/0837
. . .
{Microantennas, e.g. bow-tie} [2022-01]
G01J 5/084
. . .
{Adjustable or slidable} [2022-01]
G01J 5/0843
. . . .
{Manually adjustable} [2022-01]
G01J 5/0846
. . .
{having multiple detectors for performing different types of detection, e.g. using radiometry and reflectometry channels} [2022-01]
G01J 5/085
. . .
{having a through-hole enabling the optical elements to fulfil an additional optical function, e.g. mirrors or gratings having a through-hole for a light collecting or light injecting optical fiber} [2022-01]
G01J 5/0853
. . .
{having infrared absorbers other than the usual absorber layers deposited on infrared detectors like bolometers, wherein the heat propagation between the absorber and the detecting element occurs within a solid} [2022-01]
G01J 5/0856
. . .
{Slit arrangements} [2022-01]
G01J 5/0859
. . .
{Sighting arrangements, e.g. cameras} [2022-01]
G01J 5/0865
. . .
{having means for replacing an element of the arrangement by another of the same type, e.g. an optical filter} [2022-01]
G01J 5/0868
. . .
{Means for illuminating a slit or a surface efficiently, e.g. entrance slit of a pyrometer or entrance face of a fiber} [2022-01]
G01J 5/0871
. . .
{Beam switching arrangements; Photodetection involving different fields of view for a single detector} [2022-01]
G01J 5/0875
. . .
Windows; Arrangements for fastening thereof [2022-01]
G01J 5/0878
. . .
{Diffusers} [2022-01]
​
G01J 5/0879
. . .
{Optical elements not provided otherwise, e.g. optical manifolds, holograms, cubic beamsplitters, non-dispersive prisms or particular coatings} [2022-01]
WARNING

G01J 5/0881
. . .
{Compact construction} [2013-01]
G01J 5/0884
. . . .
{Monolithic} [2013-01]
G01J 5/0887
. . .
{Integrating cavities mimicking black bodies, wherein the heat propagation between the black body and the measuring element does not occur within a solid; Use of bodies placed inside the fluid stream for measurement of the temperature of gases; Use of the reemission from a surface, e.g. reflective surface; Emissivity enhancement by multiple reflections} [2013-01]
G01J 5/0893
. . .
{Arrangements to attach devices to a pyrometer, i.e. attaching an optical interface; Spatial relative arrangement of optical elements, e.g. folded beam path (G01J 5/049 takes precedence)} [2013-01]
G01J 5/0896
. . .
{using a light source, e.g. for illuminating a surface} [2013-01]
G01J 5/10
.
using electric radiation detectors [2013-01]
G01J 2005/103
. .
{Absorbing heated plate or film and temperature detector} [2013-01]
G01J 2005/106
. .
{Arrays} [2013-01]
G01J 5/12
. .
using thermoelectric elements, e.g. thermocouples [2022-01]
G01J 2005/123
. . .
{Thermoelectric array} [2013-01]
G01J 2005/126
. . .
{Thermoelectric black plate and thermocouple} [2013-01]
G01J 5/14
. . .
Electrical features thereof [2022-01]
G01J 5/16
. . . .
Arrangements with respect to the cold junction; Compensating influence of ambient temperature or other variables [2013-01]
G01J 5/20
. .
using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices [2022-01]
G01J 2005/202
. . .
{Arrays} [2013-01]
G01J 2005/204
. . . .
{prepared by semiconductor processing, e.g. VLSI} [2013-01]
G01J 2005/206
. . .
{on foils} [2013-01]
G01J 2005/208
. . .
{superconductive} [2013-01]
G01J 5/22
. . .
Electrical features thereof [2022-01]
G01J 5/24
. . . .
Use of specially adapted circuits, e.g. bridge circuits [2022-01]
G01J 5/28
. .
using photoemissive or photovoltaic cells [2022-01]
G01J 2005/283
. . .
{Array} [2013-01]
G01J 2005/286
. . . .
{Arrangement of conductor therefor} [2013-01]
G01J 5/30
. . .
Electrical features thereof [2022-01]
​
G01J 5/34
. .
using capacitors, e.g. pyroelectric capacitors [2022-01]
WARNING

G01J 2005/345
. . .
{Arrays} [2013-01]
​
G01J 5/35
. . .
Electrical features thereof [2022-01]
WARNING

G01J 5/36
. .
using ionisation of gases [2013-01]
G01J 5/38
.
using extension or expansion of solids or fluids [2013-01]
G01J 5/40
. .
using bimaterial elements [2022-01]
G01J 5/42
. .
using Golay cells [2013-01]
G01J 2005/425
. . .
{Microarray} [2017-08]
G01J 5/44
. .
using change of resonant frequency, e.g. of piezoelectric crystals [2023-08]
G01J 5/46
.
using radiation pressure or radiometer effect [2013-01]
G01J 5/48
.
Thermography; Techniques using wholly visual means [2022-01]
G01J 5/485
. .
{Temperature profile} [2022-01]
G01J 5/52
.
using comparison with reference sources, e.g. disappearing-filament pyrometer [2022-01]
G01J 2005/526
. .
{Periodic insertion of emissive surface} [2022-01]
G01J 2005/528
. .
{Periodic comparison} [2022-01]
G01J 5/53
. .
Reference sources, e.g. standard lamps; Black bodies [2022-01]
G01J 5/532
. . .
{using a reference heater of the emissive surface type, e.g. for selectively absorbing materials} [2022-01]
G01J 5/54
. .
Optical arrangements [2022-01]
G01J 5/56
. .
Electrical features thereof [2022-01]
G01J 5/58
.
using absorption; using extinction effect [2022-01]
G01J 2005/583
. .
{Interferences, i.e. fringe variation with temperature} [2022-01]
G01J 5/59
.
using polarisation; Details thereof [2022-01]
G01J 5/60
.
using determination of colour temperature [2022-01]
G01J 5/601
. .
{using spectral scanning} [2022-01]
G01J 5/602
. .
{using selective, monochromatic or bandpass filtering} [2022-01]
G01J 2005/604
. . .
{bandpass filtered} [2022-01]
G01J 5/605
. .
{using visual determination} [2022-01]
G01J 2005/607
. .
{on two separate detectors} [2022-01]
G01J 2005/608
. .
{Colour temperature of light sources} [2022-01]
​
G01J 5/70
.
Passive compensation of pyrometer measurements, e.g. using ambient temperature sensing or sensing of temperature within housing [2022-01]
WARNING

G01J 5/80
.
Calibration (using comparison with reference sources G01J 5/52) [2022-01]
G01J 5/802
. .
{by correcting for emissivity} [2022-01]
G01J 5/804
. .
{using atmospheric correction} [2022-01]
G01J 5/806
. .
{by correcting for reflection of the emitter radiation} [2022-01]
G01J 5/808
. .
{using linearising circuits} [2022-01]
​
G01J 5/90
.
Testing, inspecting or checking operation of radiation pyrometers [2022-01]
WARNING

G01J 7/00
Measuring velocity of light [2013-01]
G01J 9/00
Measuring optical phase difference (devices or arrangements for controlling the phase of light beams G02F 1/01); Determining degree of coherence; Measuring optical wavelength (spectrometry G01J 3/00) [2013-01]
G01J 2009/002
.
{Wavefront phase distribution} [2013-01]
G01J 2009/004
.
{Mode pattern} [2013-01]
G01J 2009/006
.
{using pulses for physical measurements} [2013-01]
G01J 2009/008
. .
{using decay time in cavity} [2013-01]
G01J 9/02
.
by interferometric methods (using interferometers for measuring optically the linear dimensions of objects G01B 9/02) [2013-01]
G01J 2009/0203
. .
{Phased array of beams} [2013-01]
G01J 2009/0207
. .
{Double frequency, e.g. Zeeman} [2013-01]
G01J 2009/0211
. .
{for measuring coherence} [2013-01]
G01J 9/0215
. .
{by shearing interferometric methods} [2013-01]
G01J 2009/0219
. . .
{using two or more gratings} [2013-01]
G01J 2009/0223
. .
{Common path interferometry; Point diffraction interferometry} [2013-01]
G01J 2009/0226
. .
{Fibres} [2013-01]
G01J 2009/023
. . .
{of the integrated optical type} [2013-01]
G01J 2009/0234
. .
{Measurement of the fringe pattern} [2013-01]
G01J 2009/0238
. . .
{the pattern being processed optically, e.g. by Fourier transformation} [2013-01]
G01J 2009/0242
. .
{Compensator} [2013-01]
G01J 9/0246
. .
{Measuring optical wavelength} [2013-01]
G01J 2009/0249
. .
{with modulation} [2013-01]
G01J 2009/0253
. . .
{of wavelength} [2013-01]
G01J 2009/0257
. .
{multiple, e.g. Fabry Perot interferometer} [2013-01]
G01J 2009/0261
. .
{polarised} [2013-01]
G01J 2009/0265
. . .
{with phase modulation} [2013-01]
G01J 2009/0269
. .
{Microscope type} [2013-01]
G01J 2009/0273
. .
{Ring interferometer} [2013-01]
G01J 2009/0276
. .
{Stellar interferometer, e.g. Sagnac} [2013-01]
G01J 2009/028
. .
{Types} [2013-01]
G01J 2009/0284
. . .
{Michelson} [2013-01]
G01J 2009/0288
. . .
{Machzehnder} [2013-01]
G01J 2009/0292
. . .
{Fizeau; Wedge} [2013-01]
G01J 2009/0296
. . .
{achromatic} [2013-01]
G01J 9/04
.
by beating two waves of a same source but of different frequency and measuring the phase shift of the lower frequency obtained [2013-01]
G01J 11/00
Measuring the characteristics of individual optical pulses or of optical pulse trains [2013-01]
G01J 2011/005
.
{Streak cameras} [2013-01]