Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1998-10-20
2000-08-29
Ben, Loha
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359839, 359589, 362 30, 362494, 340468, G02F 1153
Patent
active
061116831
ABSTRACT:
An improved electrochromic rearview mirror assembly for motor vehicles is disclosed that includes a signal light mounted behind the electrochromic mirror. The electrochromic mirror has a signal light area formed in its reflective coating by removing a portion of the reflective coating and aligning the signal light with this signal light area. The portion removed is laser ablated to leave lines devoid of reflective material separated by lines of the reflective material. The signal light area may be formed in the reflective coating of the electrochromic mirror regardless of whether the reflective coating is applied to the rear or front surface of the rear element of the electrochromic mirror. If the reflective coating is applied to the front surface of the rear element (i.e., the third surface), the reflective material used is also electrically conductive so as to function as one of the electrodes for the electrochromic mirror. In this case, the remaining lines of reflective material in the signal light area are in electrical contact with the remaining reflective and conductive layer on the third surface. The reflective layer forms an integral electrode in contact with the electrochromic media, and may be a single layer of a highly reflective material or may comprise a series of coatings where the outer coating is a highly reflecting material.
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Cammenga David J.
Forgette Jeffrey A.
Vander Zwaag Scott W.
Ben Loha
Gentex Corporation
Rees Brian
LandOfFree
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