Patent ID: 11940719
Assignee: SHARP NEC DISPLAY SOLUTIONS, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 9:
10. A light source device for generating incident light of a first microlens array that comprises a plurality of microlenses arranged in a first direction and a second direction orthogonal to each other and that irradiates an image forming device, that performs optical modulation, with the output light, the light source device comprising:
a plurality of first light sources that emits laser light and that irradiates the first microlens array with the output light;
a plurality of second light sources that emits laser light; and
a second microlens array that comprises a plurality of microlenses arranged in a third direction and a fourth direction orthogonal to each other, and that is irradiated the laser light emitted from the second light source, and that irradiates a phosphor with the output light, wherein:
the light source image of the first light sources on the irradiated surface of the first microlens array is elliptical;
a long axis direction of the light source image of the first light source intersects with both the first direction and the second direction;
the light source image of the second light source on the irradiated surface of the second microlens array is elliptical;
the long axis direction of the light source image of the second light source intersects with both the third direction and the fourth direction; and
the first direction and the second direction intersect with both the third direction and the fourth direction,
wherein when a width of a short axis direction of the light source image is c, and a length of a microlens of the first microlens array parallel to the short axis direction of the light source image is L,
L≤3.0c.