US 9,810,977 B2
Solid-state light source device and projector utilizing a plurality of collimator lenses
Koichi Akiyama, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, Tokyo (JP)
Filed by Koichi Akiyama, Matsumoto (JP)
Filed on Nov. 2, 2011, as Appl. No. 13/287,413.
Claims priority of application No. 2010-265165 (JP), filed on Nov. 29, 2010.
Prior Publication US 2012/0133904 A1, May 31, 2012
Int. Cl. G03B 21/20 (2006.01); G02B 27/10 (2006.01); G02B 27/48 (2006.01); G03B 33/06 (2006.01); H04N 9/31 (2006.01); G02B 13/22 (2006.01)
CPC G03B 21/204 (2013.01) [G02B 27/102 (2013.01); G02B 27/48 (2013.01); G03B 21/208 (2013.01); G03B 21/2066 (2013.01); G03B 33/06 (2013.01); H04N 9/3158 (2013.01); H04N 9/3161 (2013.01); H04N 9/3164 (2013.01); G02B 13/22 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A projector comprising:
a light source section for emitting excitation light in a collimated fashion;
a first lens array for receiving and dividing the excitation light from the light source section into a plurality of partial light beams;
a second lens array, provided in a position downstream of the first lens array, for receiving the plurality of partial light beams;
a dichroic mirror, provided in a position downstream of the second lens array, for receiving the plurality of partial light beams coming from the second lens array;
an overlapping optical system, provided in a position downstream of the dichroic mirror, for receiving the plurality of partial light beams coming from the dichroic mirror;
a light emitting element, provided in a position downstream of the overlapping optical system, for emitting fluorescence upon receiving the plurality of partial light beams coming from the overlapping optical system, a path of the fluorescence including the overlapping optical system and the dichroic mirror in this order;
a light modulator; and
a projection optical system for projecting the fluorescence modulated by the light modulator, wherein:
the overlapping optical system is configured to overlap the partial light beams with each other on the light emitting element and to collimate the fluorescence emitted by the light emitting element,
the dichroic mirror is configured to separate the collimated fluorescence from the plurality of partial light beams, and
the light modulator is configured to modulate the fluorescence coming from the dichroic mirror, in accordance with signals including image information.