# US 8,465,154 B2 · Vehicle instrument panel with rear projection system

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- Number: US 8,465,154 B2
- Document ID: US8465154B2
- Status: Granted
- Kind: B2
- Application number: 12/617,133
- Filed: 2009-11-12
- Published: 2010-08-19
- Granted: 2013-06-18
- Earliest claimed: 2009-02-16
- Assignees: Hyundai Motor Company
- Applicants: Ju Hyun Kim
- Inventors: Ju Hyun Kim
- Web page: https://patentgrep.com/patent/US8465154B2

## CPC

- G03B 21/00: Projectors or projection-type viewers; Accessories therefor (devices for changing pictures G03B23/00)
- 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

The present invention relates, generally, to a vehicle dashboard using rear projection system. A vehicle dashboard using rear projection system of the present invention preferably includes: a screen that provides a visual image; a printed circuit board (PCB) that controls the provision of a graphic image to the screen; and an projection system projection system that is controlled by the printed circuit board, and is installed at a rear side of the printed circuit board and irradiates a light to the screen.

## Claims

### Claim 1

A vehicle dashboard using rear projection system, comprising: a screen that provides a visual image;
a printed circuit board (PCB) that controls the provision of a graphic image to the screen; and
an projection system that is controlled by the printed circuit board, and is installed at a rear side of the printed circuit board and irradiates a light to the screen, the projection system including:
a projector that projects light;
a first minor that reflects the light projected by the projector; and
a second minor that reflects again the light reflected by the first mirror to be projected into the screen, wherein the first mirror and the second mirror are inclined with an identical angle, while being inclined in a different direction
wherein the printed circuit board includes a graphic controller which controls a shape and size of the visual image displayed on the screen.

### Claim 2 (depends on 1)

The vehicle dashboard of claim 1, wherein the projection system controls a size of the visual image according to a gap between the first minor and the projector.

### Claim 3 (depends on 2)

The vehicle dashboard of claim 2, wherein, in the projection system, the size of the visual image is increased as the gap between the first mirror and the projector increases.

### Claim 4 (depends on 1)

The vehicle dashboard of claim 1, wherein the projection system identically changes an angle of the first mirror and second minor to be inclined with an identical angle, while the first mirror and the second mirror are inclined in a different direction.

### Claim 5 (depends on 1)

The vehicle dashboard of claim 1, wherein the printed circuit board includes a graphic controller which controls a shape and size of the visual image displayed on the screen.