US 9,810,576 B2
Variable wavelength optical filter module
Mitsuhiro Okada, Hyogo (JP); and Soichiro Hiraoka, Hyogo (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 15/26,989
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Dec. 12, 2014, PCT No. PCT/JP2014/006190
§ 371(c)(1), (2) Date Apr. 4, 2016,
PCT Pub. No. WO2015/098019, PCT Pub. Date Jul. 2, 2015.
Claims priority of application No. 2013-271263 (JP), filed on Dec. 27, 2013.
Prior Publication US 2016/0258812 A1, Sep. 8, 2016
Int. Cl. G01J 3/26 (2006.01); G01J 3/02 (2006.01); G02B 26/00 (2006.01)
CPC G01J 3/26 (2013.01) [G01J 3/021 (2013.01); G01J 3/0205 (2013.01); G01J 3/0259 (2013.01); G02B 26/001 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A variable wavelength optical filter module, comprising:
a package including a first reflection part disposed in an inside of the package;
a variable wavelength optical filter disposed in the inside of the package and including a first reflecting plate and a second reflecting plate facing each other with a variable clearance therebetween; and
a detector disposed in the inside of the package, for detecting a ray of light passing through the variable wavelength optical filter, wherein:
the variable wavelength optical filter and the detector are disposed on an opposite side to the first reflection part, and
the ray of the light incident is entered from an upper side of the package into the inside of the package through the variable wavelength optical filter,
the first reflection part reflects the ray of the light incident passing through the variable wavelength optical filter, and
the ray of the light incident reflected from the first reflection part enters the detector.