# US 11,110,865 B2 · Vehicle display device and vehicle display system

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

- Number: US 11,110,865 B2
- Document ID: US11110865B2
- Status: Granted
- Kind: B2
- Application number: 16/839,093
- Filed: 2020-04-03
- Published: 2020-07-23
- Granted: 2021-09-07
- Earliest claimed: 2017-11-29
- Assignees: JVCKENWOOD Corporation
- Applicants: JVCKENWOOD Corporation
- Inventors: Manabu Kobayashi; Yuki Wada
- Web page: https://patentgrep.com/patent/US11110865B2

## CPC

- B60R 1/12: Mirror assemblies combined with other articles, e.g. clocks
- G02B 27/0101: {characterised by optical features (G02B27/0172 takes precedence)}
- B60R 1/04: mounted inside vehicle {(B60R1/025, B60R1/08 take precedence)}
- B60R 1/08: involving special optical features, e.g. avoiding blind spots {, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors (B60R1/025, B60R1/10 take precedence)}
- B60R 11/04: Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
- B60R 2001/1215: {with information displays}
- B60R 2001/1253: {with cameras, video cameras or video screens}
- B60R 2300/20: characterised by the type of display used
- B60R 2300/205: using a head-up display
- B60R 2300/8026: in addition to a rear-view mirror system
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A vehicle display device includes a display configured to display a video; a first mirror configured to reflect the video displayed in the display; and a second mirror configured to reflect the video reflected on the first mirror, wherein a distance from eye point of occupant of vehicle to a reflecting image formed by the second mirror is optically extended such that it becomes longer than a distance from the eye point of the occupant to a display surface of the display.

## Claims

### Claim 1

A vehicle display device comprising:
a display configured to display a video;
a first concave mirror having a reflecting surface formed in a concave shape configured to reflect the video displayed in the display; and
a second concave mirror having a reflecting surface formed in a concave shape configured to reflect the video reflected on the first concave mirror, wherein
a display surface of the display is positioned within a composite focal length of the first concave mirror and the second concave mirror;
a distance from eye point of occupant of vehicle to a reflecting image formed by the second concave mirror is optically extended such that it becomes longer than a distance from the eye point of the occupant to a display surface of the display; and
R1 and R2 satisfy 1.1<R2/R1<2 wherein R1 represents a curvature radius of the reflecting surface of the first concave mirror and R2 represents a curvature radius of the reflecting surface of the second concave mirror; and
at least one of conditions:
i1 and i2 satisfy 30°≤i1+i2≤70° wherein i1 represents an incidence angle of central ray from the display onto the first concave mirror and i2 represents an incidence angle of central ray from the first concave mirror onto the second concave mirror;
R1 satisfies 300 mm≤R1≤=600 mm; and
Yv and Yp satisfy 1<Yv/Yp<10 wherein Yv represents a magnitude in a vertical direction of the video that is visually confirmed by the occupant and Yp represents a magnitude in a height direction of the video, corresponding to the vertical direction of the virtual image displayed on the display surface;
is satisfied.

### Claim 2 (depends on 1)

The vehicle display device according to claim 1, wherein the display surface is disposed to be oriented upward and along a direction parallel to optical axis from the second concave mirror toward the eye point of the occupant, and is disposed to be inclined with respect to a central ray that falls on the first concave mirror from the display surface.

### Claim 3 (depends on 1)

A vehicle display system comprising:
the vehicle display device according to claim 1;
a rear camera that captures rear side of the vehicle; and
a controller that obtains a video taken by the rear camera and displays the video in the display device.