Light source unit able to diffuse laser beam sufficiently, projector, and image projection method
AssigneeCasio Computer Co., Ltd.
InventorHiroki MASUDA
Life of this patent
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Abstract
There is provided a light source unit having a light source which emits a laser beam, a plurality of diffusing plates on which the laser beam is incident and which emit the laser beam incident thereon as diffuse light, and a driving mechanism which moves the plurality of diffusing plates, wherein the laser beam from the light source is incident on one diffusing plate of the plurality of diffusing plates, and diffuse light emitted from the one diffusing plate is incident on the other diffusing plate of the plurality of diffusing plates.
Claims13
A light source unit comprising:
- a light source which emits a laser beam;
- a plurality of diffusing plates on which the laser beam is incident and which emit the laser beam incident thereon as diffuse light;
- and
- a driving mechanism which moves the plurality of diffusing plates, wherein
- the laser beam from the light source is incident on one diffusing plate of the plurality of diffusing plates, and diffuse light emitted from the one diffusing plate is incident on the other diffusing plate of the plurality of diffusing plates.
A light source unit comprising:
- a light source which emits a laser beam;
- a diffusing plate on which the laser beam is incident and which emits the laser beam incident thereon as diffuse light;
- and
- a driving mechanism which moves the diffusing plate, wherein
- the laser beam from the light source is incident on a first area of the diffusing plate, and diffuse light emitted from the first diffusing area is incident on a second area of the diffusing plate which differs from the first area.
An image projection method comprising the steps of:
- causing a laser beam from a light source to be incident on one diffusing plate of a plurality of moving diffusing plates to convert the laser beam into diffuse light;
- causing the diffuse light emitted from the one diffusing plate to be incident on the other moving diffusing plate of the plurality of diffusing plates to diffuse further the diffuse light;
- aligning an axis of light in a wavelength range which is different from a wavelength range of the laser beam from the light source with an axis of the laser beam which is converted into the diffuse light by the plurality of diffusing plates for incidence on the a display element to thereby form projection image light.
Dependencies are inferred from the claim text.