Light emitting element, method of manufacturing light emitting element, and projector

Patent metadata

Field	Value
Publication number	US-2021373425-A1
Application number	US-202117331692-A
Country	US
Kind code	A1
Filing date	May 27, 2021
Priority date	May 29, 2020
Publication date	Dec 2, 2021
Grant date	—

Abstract

An optical element according to the present disclosure includes a main body part including an optical part having an optical surface, and a support part which is provided to the optical part, and which is to be supported by a support body, and a functional layer which is provided as a film to the main body part, wherein the functional layer is disposed so as to cover the optical surface of the optical part, and so as not to cover at least a part of the support part.

First claim

What is claimed is:

1 . An optical element comprising:
a main body part including an optical part having an optical surface, and a support part which is provided to the optical part, and which is to be supported by a support body; and a functional layer which is provided as a film to the main body part, wherein the functional layer is disposed so as to cover the optical surface of the optical part, and so as not to cover at least a part of the support part.

2 . The optical element according to claim 1 , wherein
a planar shape of the optical part is a rectangular shape, the optical part has a first end side part along a first direction, and a second end side part along a second direction crossing the first direction, and the support part is provided to one of the first end side part and the second end side part.

3 . The optical element according to claim 2 , wherein
the support part is disposed throughout an entire area of one of the first end side part and the second end side part.

4 . The optical element according to claim 1 , wherein
the optical part is a lens.

5 . The optical element according to claim 4 , wherein
the lens is a multi-lens having a multi-lens surface constituted by a plurality of lens surfaces as the optical surface.

6 . The optical element according to claim 1 , wherein
the support part includes a planar part.

7 . The optical element according to claim 6 , wherein
the optical part and the support part are disposed so that respective end surfaces cross each other with an obtuse angle.

8 . The optical element according to claim 1 , wherein
the functional layer includes a planarization film configured to planarize the optical surface.

9 . A method of manufacturing an optical element having a main body part including an optical part and a support part, and a functional layer, the method comprising:
a film formation step of providing a film of the functional layer to the main body part, wherein in the film formation step, the support part is supported by a support body to thereby hold the main body part, and the functional layer is provided to the main body part so as to cover the optical surface of the optical part, and so as not to cover at least a part at an optical surface side of the support part.

10 . A projector comprising:
a light source device including the optical element according to claim 1 ; a light modulation device configured to modulate light from the light source device in accordance with image information; and a projection optical device configured to project the light modulated by the light modulation device.

11 . The projector according to claim 10 , further comprising:
a support member configured to support the optical element, wherein the optical element is supported in the support part by the support member.

Assignees

• Seiko Epson Corp

Inventors

• Tadachi Kei

Classifications

• G03B21/2073

  Polarisers in the lamp house (peculiar to electronic spatial light modulators H04N9/3197) · CPC title

• G03B21/2066

  Reflectors in illumination beam (in projection beam G03B21/28) · CPC title

• G02B7/021 Primary

  for more than one lens · CPC title

• G02B3/0012 Primary

  characterised by the manufacturing method · CPC title

• G03B21/208 Primary

  Homogenising, shaping of the illumination light · CPC title