Exterior Mirror or Rear-View Mirror for a Motor Vehicle

• US 20080013181A1
• Filed: 05/10/2005
• Published: 01/17/2008
• Est. Priority Date: 06/17/2004
• Status: Abandoned Application

• Current Assignee: Deutsches Zentrum Fã¼R Luft- Und Raumfahrt E.V.
• Original Assignee: Deutsches Zentrum Fã¼R Luft- Und Raumfahrt E.V.
• Inventors: Driescher, Hans, Eckardt, Andreas
• Application Number:
  US11/629,848
• Publication Number:
  US 20080013181A1
• Time in Patent Office: Days
• US Class Current: 359/608
• CPC Class Codes: B60R 1/088 using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
• CPC Class Codes: B60R 2001/1253 with cameras, video cameras or video screens

Abstract

A mirror system includes a highly reflective coating which transmits some light, and a second coating applied on the highly reflective coating, wherein the second coating is subdivided into segments having a transmissivity that can be varied individually by electronic signals. A camera situated behind the highly reflective coating generates image data for light incident on the second coating, and a control unit uses the image data to control the transmissivity of the segments individually so that light reflected by the highly reflective coating through the segments does not exceed an adjustable brightness.

Claims

1-10. -10. (canceled)

11. A side-view or rear-view mirror system for a motor vehicle, comprising:

a highly reflective coating which transmits some light;

a second coating applied on the reflective coating, said second coating being subdivided into segments having a transmissivity that can be varied individually by electronic signals;

a camera situated behind the highly reflective coating, the camera generating image data for light incident on the second coating; and

a control unit which uses the image data to control the transmissivity of the segments individually so that light reflected by the highly reflective coating through the segments does not exceed an adjustable brightness.

12. The mirror system of claim 11 wherein the second coating is an LCD film.

13. The mirror system of claim 11 further comprising a transparent substrate with an anti-reflection coating on at least one of said highly reflective coating and said second coating.

14. The mirror system of claim 13 wherein a transparent substrate with an anti-reflective coating is mechanically securely joined to the second coating.

15. The mirror system of claim 11 wherein the highly reflective coating has a transmissivity of 1-10%.

16. The mirror system of claim 11 further comprising means for determining an angle of view of an observer.

17. The mirror system of claim 11 further comprising photosensitive sensors situated in differently oriented funnel-like openings in marginal areas of the system.

18. The mirror system of claim 11 wherein the control unit generates control signals which are configured as alternating current voltage signals.

19. The mirror system of claim 18 wherein the frequency of the voltage signals is greater than or equal to 200 Hz.

20. The mirror system of claim 11 wherein the second coating is substantially transparent in the absence of an applied voltage.