Non planar mirrors with planar electrochromic cavity

• US 7,012,729 B2
• Filed: 05/27/2004
• Issued: 03/14/2006
• Est. Priority Date: 05/30/2003
• Status: Expired due to Fees

• Current Assignee: Ajjer, LLC
• Original Assignee: Electro Chromix Incorporated
• Inventors: Agrawal, Anoop, LeCompte, Robert S., Tonazzi, Juan Carlos Lopez
• Primary Examiner(s): Dang, Hung Xuan
• Assistant Examiner(s): MARTINEZ, JOSEPH P
• Application Number:
  US10/855,284
• Publication Number:
  US 20040240029A1
• Time in Patent Office: 656 Days
• Field of Search: 359265-275, 359/839
• US Class Current: 359/265
• CPC Class Codes: B60R 1/082 using a single wide field mirror or an association of rigidly connected mirrors
• CPC Class Codes: B60R 1/088 using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors
• CPC Class Codes: G02F 1/153 Constructional details

Abstract

This invention describes non-planar electrochromic mirrors that are made by combining planar electrochromic elements with non-planar reflectors. This results in lower cost mirrors by circumventing several issues related to the difficulty of making non-planar EC elements.

Claims

1. A non-planar variable reflectivity mirror comprising a variable planar light attenuating device and at least one non-planar reflective element in spaced relation to the variable planar light attenuating device so as to reflect light transmitted through the variable planar light attenuating device, the planar light attenuating device comprising an electrochromic (EC) device, and attenuation of light by the planar light attenuating device determining the color and/or brightness of the light reflected from the non planar reflective element and transmitted by the planar light attenuating device.

2. A non-planar variable reflectivity mirror as in claim 1 where the light attenuating device is bonded to the reflective element.

3. A non-planar variable reflectivity mirror as in claim 1 where the reflective element is one of convex and multi-radius.

4. A non-planar variable reflectivity mirror as in claim 1 further including support structure that enables the mirror to be connected with a vehicle in such a manner that the mirror forms a mirror for the vehicle.

5. A non-planar variable reflectivity mirror as in claim 4 wherein the support structure is configured for connection to the interior and exterior of a vehicle so that the mirror can be used for at least one of an interior mirror and exterior mirror.

6. A non-planar variable reflectivity mirror as in claim 1, where at least one of the substrates used for the EC device and the reflective element are made out of a polymeric material.

7. A non-planar variable reflectivity mirror as in claim 1 where more than one reflective element is used.

8. A non-planar variable reflectivity mirror as in claim 1 where the mirror is integrated with at least one of:

a display, a heater, a sensor and a light.