# US 12,603,974 B2 · LCD projector with multiple display screens and lenses

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,603,974 B2
- Document ID: US12603974B2
- Status: Granted
- Kind: B2
- Application number: 18/386,158
- Filed: 2023-11-01
- Published: 2025-03-27
- Granted: 2026-04-14
- Earliest claimed: 2023-09-23
- Applicants: Chengdu Jishen Creative Technology Co., Ltd.
- Inventors: Shanhong Xian; Youhui Ren; Xingwang Cao
- Web page: https://patentgrep.com/patent/US12603974B2

## CPC

- G03B 21/2013: {Plural light sources}
- H04N 9/3147: {Multi-projection systems (video walls G06F3/1446)}
- G03B 21/00: Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)
- H04N 9/3105: {for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators (simultaneous projection in colour photography G03B33/10; beam splitting or combining systems per se G02B27/10)}
- G03B 21/005: {Projectors using an electronic spatial light modulator but not peculiar thereto}
- 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)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

The present disclosure provides a LCD projector with multiple display screens and lenses, comprising: light sources, collimating lenses, LCD imagers, field lenses and imaging lenses; the collimating lenses, the LCD imagers, the field lenses and the imaging lenses are sequentially arranged on the optical path emitted by the light sources; the collimating lenses, the LCD imagers and the field lenses are all arranged in parallel; the vertical axes of the collimating lenses, the LCD imagers and the field lenses are maintained on the same axes as the vertical axes of the light emitted by the light sources; the light sources, the collimating lenses, the LCD imagers, the field lenses and the imaging lenses constitute a plurality of groups of imaging groups.

## Claims

### Claim 1

A LCD projector with multiple display screens and lenses, comprising:
light sources, collimating lenses, LCD imagers, field lenses and imaging lenses;
the collimating lenses, the LCD imagers, the field lenses and the imaging lenses are sequentially arranged on the optical path emitted by the light sources;
the collimating lenses, the LCD imagers and the field lenses are all arranged in parallel; the vertical axes of the collimating lenses, the LCD imagers and the field lenses are maintained on the same axes as the vertical axes of the light emitted by the light sources;
the light sources, the collimating lenses, the LCD imagers, the field lenses and the imaging lenses constitute a plurality of groups of imaging groups.

### Claim 2 (depends on 1)

The LCD projector with multiple display screens and lenses of claim 1, wherein the light sources, the collimating lenses, the LCD imagers, the field lenses and the imaging lenses constitute three group of imaging groups as the same; with the middle imaging group as the standard image position, the right or left axis projection of the image is performed by moving the imaging lenses at both ends, and overlaps with the image of the middle imaging group.

### Claim 3 (depends on 2)

The LCD projector with multiple display screens and lenses of claim 2, wherein three group of the imaging groups of the light sources are white light; the LCD imagers are full color LCD imagers, thus constituting the first imaging unit.

### Claim 4 (depends on 2)

The LCD projector with multiple display screens and lenses of claim 2, wherein the light sources in the three group of imaging groups respectively adopts different red light source, green light source or blue light source; the LCD imagers are black and white LCD imagers, thus constituting the second imaging unit.

### Claim 5 (depends on 1)

The LCD projector with multiple display screens and lenses of claim 1, wherein the light sources, the collimating lenses, the LCD imagers, the field lenses and the imaging lenses constitute two group of imaging groups as the same; using the middle separation line of the two imaging groups as the centerline, the right or left axis projection of the image is performed by moving the imaging lenses at both ends, and converges with the two images to form one image.

### Claim 6 (depends on 5)

The LCD projector with multiple display screens and lenses of claim 5, wherein two group of the imaging groups of the light sources are white light; the LCD imagers are full color LCD imagers, thus constituting the third imaging unit.

### Claim 7 (depends on 5)

The LCD projector with multiple display screens and lenses of claim 5, wherein one group of light sources is either a red light source, a green light source, or a blue light source, while the other group of light sources is a dual color time-sharing driving light source with different colors from the previous group of light sources; the LCD imagers are black and white LCD imagers, thus constituting the fourth imaging unit.

### Claim 8 (depends on 7)

The LCD projector with multiple display screens and lenses of claim 7, the adjacent two group of imaging groups are arranged in equal spacing, in the same plane, and in parallel.