Illuminator and projector
AssigneeSeiko Epson Corporation
InventorKoichi Akiyama
Life of this patent
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Abstract
An illuminator includes a light source apparatus including a red solid-state light source unit that emits red light, a green solid-state light source unit that emits green light, and a blue solid-state light source unit that emits blue light, a light combining system that combines the red light, the green light, and the blue light to generate illumination light and emits the illumination light in a first direction, a focusing lens on which the illumination light emitted from the light combining system is incident, a diffuser disposed on the light exiting side of the focusing lens, and an adjustment lens that is located between the green solid-state light source unit and the light combining system and adjusts the position where the green light is focused.
Claims8
An illuminator comprising:
- a light source apparatus including a red solid-state light source unit configured to emit red light, a green solid-state light source unit configured to emit green light, and a blue solid-state light source unit configured to emit blue light;
- a light combining system configured to combine the red light, the green light, and the blue light to generate illumination light and emit the illumination light in a first direction;
- an adjustment lens that is located between the green solid-state light source unit and the light combining system and configured to adjust a point where the green light is focused;
- a focusing lens on which the illumination light emitted from the light combining system is incident, the focusing lens being configured to focus the red light at a first point and the blue light at a second point which is different from the first point in the first direction;
- a diffuser located in a light exiting side of the focusing lens, the diffuser being located between the first point and the second point, and located in a different position from the position where the green light is focused.
Dependencies are inferred from the claim text.