Light source apparatus and projector

Patent metadata

Field	Value
Publication number	US-2016241821-A1
Application number	US-201615040145-A
Country	US
Kind code	A1
Filing date	Feb 10, 2016
Priority date	Feb 17, 2015
Publication date	Aug 18, 2016
Grant date	—

Abstract

A light source apparatus includes a light source, a substrate provided rotatably around a predetermined axis of rotation, a scattered light generator which is provided on the substrate and on which light from the light source is incident, a pickup lens provided on the light exiting side of the scattered light generator, and a holding member that holds the pickup lens, and at least one of the contour of a surface closest to the substrate among the surfaces of the holding member and the contour of a surface facing the substrate among the surfaces of the pickup lens is located inside the contour of the substrate when viewed in the direction parallel to the axis of rotation.

First claim

What is claimed is:

1 . A light source apparatus comprising:
a light source; a substrate provided rotatably around a predetermined axis of rotation; a scattered light generator which is provided on the substrate and on which light from the light source is incident; a pickup lens provided on a light exiting side of the scattered light generator; and a holding member that holds the pickup lens, wherein at least one of a contour of a surface closest to the substrate among surfaces of the holding member and a contour of a surface facing the substrate among surfaces of the pickup lens is located inside a contour of the substrate when viewed in a direction parallel to the axis of rotation.

2 . The light source apparatus according to claim 1 ,
wherein the pickup lens protrudes relative to the holding member toward the substrate, and the contour of the surface facing the substrate among surfaces of the pickup lens is located inside the contour of the substrate.

3 . The light source apparatus according to claim 2 ,
wherein the contour of the surface closest to the substrate among surfaces of the holding member is located inside the contour of the substrate.

4 . The light source apparatus according to claim 1 ,
wherein the scattered light generator is a phosphor layer that converts light incident from the light source into fluorescence and outputs the fluorescence.

5 . The light source apparatus according to claim 4 ,
wherein the phosphor layer is made of an inorganic material.

6 . The light source apparatus according to claim 1 ,
wherein the scattered light generator is a diffusion layer that diffuses light incident from the light source.

7 . A projector comprising:
the light source apparatus according to claim 1 ; a light modulator that modulates light from the light source apparatus in accordance with image information to form image light; and a projection system that projects the image light.

8 . A projector comprising:
the light source apparatus according to claim 2 ; a light modulator that modulates light from the light source apparatus in accordance with image information to form image light; and a projection system that projects the image light.

9 . A projector comprising:
the light source apparatus according to claim 3 ; a light modulator that modulates light from the light source apparatus in accordance with image information to form image light; and a projection system that projects the image light.

10 . A projector comprising:
the light source apparatus according to claim 4 ; a light modulator that modulates light from the light source apparatus in accordance with image information to form image light; and a projection system that projects the image light.

11 . A projector comprising:
the light source apparatus according to claim 5 ; a light modulator that modulates light from the light source apparatus in accordance with image information to form image light; and a projection system that projects the image light.

12 . A projector comprising:
the light source apparatus according to claim 6 ; a light modulator that modulates light from the light source apparatus in accordance with image information to form image light; and a projection system that projects the image light.

Assignees

• Seiko Epson Corp

Inventors

• Kuroi Kiyoshi
• Egawa Akira

Classifications

• G02B27/0966

  Cylindrical lenses (cylindrical lenses per se G02B3/06) · CPC title

• H04N9/317

  Convergence or focusing systems (electronic adjustment of convergence H04N9/3185; convergence or focusing arrangements for cathode ray tubes H04N9/28; means for automatic focusing of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/53) · CPC title

• G03B21/208

  Homogenising, shaping of the illumination light · CPC title

• G02B27/1046

  for use with transmissive spatial light modulators · CPC title

• H04N9/3152

  for shaping the light beam (beam shaping per se G02B27/09) · CPC title