# US 9,438,873 B2 · Projector

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- Number: US 9,438,873 B2
- Document ID: US9438873B2
- Status: Granted
- Kind: B2
- Application number: 14/709,736
- Filed: 2015-05-12
- Published: 2015-11-19
- Granted: 2016-09-06
- Earliest claimed: 2014-05-14
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Morio Matsumoto
- Web page: https://patentgrep.com/patent/US9438873B2

## CPC

- H04N 9/3194: {including sensor feedback}
- G03B 21/14: Details
- G03B 21/142: {Adjusting of projection optics}
- H04N 9/31: Projection devices for colour picture display {, e.g. using electronic spatial light modulators [ESLM]}
- H04N 9/3179: {Video signal processing therefor}
- H04N 21/42653: {for processing graphics}
- H04N 21/47: End-user applications
- H04N 21/485: End-user interface for client configuration
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)

## Abstract

A projector includes an OSD image generation section that generates an OSD image, an OSD processor that generates a combined image in which the OSD image is superimposed on an input image, a light source section that outputs a light flux, a light modulator that modulates the light flux in accordance with the combined image to produce image light, a projection system that projects the image light, and a placement detector that detects whether an additional lens that changes the ratio between values in intersecting two direction in the image light has been inserted into the optical path of the projection system, and when the placement detector detects that the additional lens has been inserted, the OSD image generation section generates the OSD image in accordance with the inserted additional lens.

## Claims

### Claim 1

A projector comprising:
a generation section that generates an OSD image;
a combining section that generates a combined image in which the OSD image is superimposed on an input image;
a light source section that outputs a light flux;
a modulation section that modulates the light flux in accordance with the combined image to produce image light;
a projection section that projects the image light; and
a detection section that detects whether an optical member that changes an aspect ratio of the image light has been inserted into an optical path of the projection section,
wherein
when the detection section detects that the optical member has not been inserted, the generation section generates the OSD image to have a first OSD aspect ratio, and
when the detection section detects that the optical member has been inserted, the generation section generates the OSD image to have a second OSD aspect ratio different from the first aspect ratio.

### Claim 2 (depends on 1)

The projector according to claim 1,
further comprising a storage section that stores OSD data on the OSD image,
wherein the generation section generates the OSD image based on the OSD data stored in the storage section.

### Claim 3 (depends on 1)

The projector according to claim 1,
wherein when the detection section does not detect the insertion of the optical member, the generation section generates a first OSD image, whereas when the detection section detects the insertion of the optical member, the generation section deforms the first OSD image in accordance with an optical characteristic of the optical member to generate a second OSD image.

### Claim 4 (depends on 1)

The projector according to claim 1,
wherein the generation section generates the second OSD image by expanding or reducing the first OSD image in a predetermined direction.

### Claim 5 (depends on 1)

The projector according to claim 1,
wherein the optical member is inserted into a portion on one side of the projection section on which the image light is incident, into a portion on the other side of the projection section where the image light exits, or into the projection section.

### Claim 6 (depends on 3)

The projector according to claim 3,
wherein the optical member is an anamorphic lens, and
the generation section generates the second OSD image by reducing the first OSD image in a direction in which the image light is expanded by the anamorphic lens.

### Claim 7 (depends on 1)

The projector according to claim 1, wherein
when the optical member is not inserted into the optical path, the image light has a first aspect ratio,
when the optical member is inserted into the optical path, the image light has a second aspect ratio larger than the first aspect ratio, and
the second OSD aspect ratio is smaller than the first OSD aspect ratio.