Light source device and an illuminator and an image projector
AssigneeMinolta Co., Ltd.
InventorYasumasa Sawai
Life of this patent
Estimating the term…
Abstract
A light source device for an image projector includes: two light sources for irradiating illumination light rays; a light distributor for receiving light rays from each of the two light sources, and sending out light rays of each of the two light sources parallel to an optical axis of the projector in a uniform distribution pattern from an entirety of an emerging surface of the light distributor. Each of the two light sources irradiates light rays in a direction inclined with respect to the light distributor so that light rays irradiated by each of the two light sources are incident onto the entire incident surface of the light distributor.
Claims22
A light source device comprising:
- a plurality of separate light sources for irradiating light rays, an optical axis of each of the plurality of separate light sources being non-parallel to an optical axis of any other of the plurality of separate light sources;
- and
- a light distributor having a light incident surface and a light emerging surface, the light distributor for receiving light rays from each of the plurality of separate light sources on the light incident surface, and for transmitting light rays of each of the plurality of separate light sources parallel to a predetermined direction in a uniform distribution pattern from an entirety of the light emerging surface.
An illuminator comprising:
- a plurality of separate light sources for irradiating light rays, an optical axis of each of the plurality of separate light sources being non-parallel to an optical axis of any other of the plurality of separate light sources;
- a light distributor having a light incident surface and a light emerging surface, the light distributor for receiving light rays from each of the plurality of separate light sources on the light incident surface, and for transmitting light rays of each of the plurality of separate light sources parallel to a predetermined direction in a uniform distribution pattern from an entirety of the light emerging surface;
- and
- an optical integrator for receiving light rays from the light distributor, and for transmitting light rays onto a target screen.
An image projector comprising:
- a plurality of separate light sources for irradiating light rays, an optical axis of each of the plurality of separate light sources being non-parallel to an optical axis of any other of the plurality of separate light sources;
- a light distributor having a light incident surface and a light emerging surface, the light distributor for receiving light rays from each of the plurality of separate light sources on the light incident surface, and for transmitting light rays of each of the plurality of separate light sources parallel to a predetermined direction in a uniform distribution pattern from an entirety of the light emerging surface;
- an optical integrator for receiving light rays from the light distributor, and for transmitting light rays;
- a color separating optical system for separating light rays from the lens array optical integrator into a plurality of color light rays based on a wavelength of light rays;
- a plurality of light valves for receiving the plurality of color light rays from the color separating optical system, and for producing respective color optical images in accordance with an image signal;
- an image combiner for producing a combined optical image of color optical images produced by the plurality of light valves;
- and
- a projecting optical system for projecting the combined optical image onto a screen.
Dependencies are inferred from the claim text.