Projector
A projector of the present disclosure includes a light source, and a light modulator, the light modulator has a liquid crystal panel, a multi-lens array entered by first, second, third lights, and a light refractor array. The liquid crystal panel has a plurality of pixels and each of the plurality of pixels has first, second, third sub-pixels. The multi-lens array has a plurality of lenses entered by the first, second, third lights. The light refractor array has a first light refractor over a boundary between the first, second pixels and a second light refractor over a boundary between the first, third pixels. The first light from the first pixel and the third light from the second pixel enter the first light refractor, and the third light from the first pixel and the first light from the third pixel enter the second light refractor.
1 . A projector comprising:
a light source device emitting a light containing a first color light, a second color light, and a third color light different in color from one another;
a light modulator modulating the first color light, the second color light, and the third color light emitted from the light source device based on an image signal; and
a projection optical device projecting the light output from the light modulator, wherein
the light modulator has
one liquid crystal panel,
a multi-lens array provided at a light incident side of the liquid crystal panel and respectively entered by the first color light, the second color light, and the third color light emitted from the light source device at different angles, and
a light refractor array provided at a light exiting side of the liquid crystal panel,
the liquid crystal panel has a plurality of pixels containing a first pixel, a second pixel, and a third pixel,
each of the plurality of pixels has
a first sub-pixel entered by the first color light collected by the multi-lens array,
a second sub-pixel placed adjacent to the first sub-pixel in a first direction and entered by the second color light collected by the multi-lens array, and
a third sub-pixel placed adjacent to the second sub-pixel in the first direction and entered by the third color light collected by the multi-lens array,
the multi-lens array has a plurality of lenses provided to correspond to each of the plurality of pixels and respectively entered by the first color light, the second color light, and the third color light at different angles,
the light refractor array has
a first light refractor placed over a boundary between the first pixel and the second pixel adjacent to the first pixel in the first direction of the plurality of pixels, and
a second light refractor placed over a boundary between the first pixel and the third pixel adjacent to the first pixel at an opposite side to the first direction,
the third color light emitted from the third sub-pixel of the first pixel and the first color light emitted from the first sub-pixel of the second pixel enter the first light refractor, and
the first color light emitted from the first sub-pixel of the first pixel and the third color light emitted from the third sub-pixel of the third pixel enter the second light refractor.
2 . The projector according to claim 1 , wherein
the light refractor array further has a third light refractor provided between the first light refractor and the second light refractor in the first direction and entered by the second color light, and
the second color light emitted from the second sub-pixel of the first pixel enters the third light refractor.
3 . The projector according to claim 1 , wherein
each of the first light refractor and the second light refractor includes lenses arranged at an equal pitch to an arrangement pitch of the lenses in the multi-lens array, and
a position of a lens boundary in the first light refractor and the second light refractor is displaced by 0.2 a or more and 0.5 a or less with respect to a boundary between the first pixel and the second pixel or a boundary between the first pixel and the third pixel, where a dimension of the pixel in the first direction is a.
4 . The projector according to claim 1 , wherein
D 1 ≤0.5 D, where a distance between an optical axis of the first light refractor and an optical axis of the second light refractor is D, and a distance between an end portion at the second light refractor side of the first light refractor and an end portion at the first light refractor side of the second light refractor is D 1 .
5 . The projector according to claim 4 , wherein
D 1 >0, and
the light refractor array has a planar portion between the first light refractor and the second light refractor.
6 . The projector according to claim 1 , wherein
the first light refractor is a lens having a symmetrical shape with respect to a lens optical axis, and
the lens optical axis of the first light refractor is placed on a boundary line between the first pixel and the second pixel in a second direction orthogonal to the first direction, in which the multi-lens array, the liquid crystal panel, and the light refractor array are arranged.
7 . The projector according to claim 1 , wherein
each of the first light refractor and the second light refractor has a truncated cone shape having an outer shape tapered in a direction away from the liquid crystal panel and an end as a planar surface.