Illumination device and projector
AssigneeSeiko Epson Corporation
InventorsTetsuro Yamazaki, Shunji Kamijima, Daisuke Uchikawa
Life of this patent
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Abstract
An illumination device includes: an integrator that transmits light from an incident side thereof to an emitting side thereof; a light source that supplies the light to the incident side of the integrator, the light source including a reflector and a lamp located on a center axis of the reflector; and a center mirror located on a line connecting the center the incident side of the integrator and the lamp, the center mirror being capable of reflecting light from the integrator back to the integrator. The center mirror has a smaller diameter than that of an opening of the reflector.
Claims21
An illumination device, comprising:
- an integrator having an incident side and an emitting side, the integrator transmitting light from the incident side to the emitting side;
- a light source that supplies the light to the incident side of the integrator, the light source including a reflector and a lamp located on a center axis of the reflector;
- and
- a center mirror located on a line connecting a center of the incident side of the integrator and the lamp, the center mirror being capable of reflecting light from the integrator back to the integrator, the center mirror having a smaller diameter than a diameter of an opening of the reflector.
Dependencies are inferred from the claim text.