04799768 is referenced by 248 patents and cites 17 patents.

The specification discloses an automatic rearview mirror which more accurately responds to the glare-reduction needs of the vehicle operator. The mirror includes a reflective element, a light sensor, and a control circuit for regulating the reflective state of the mirror in response to the light sensor. The light sensor includes a detector responsive to electromagnetic wavelengths and a filter for filtering the wavelengths received by the detector so that the spectral response of the light sensor approximates the spectral response of the human eye or standard C.I.E. observer. The light sensor therefore detects the same wavelength intensities as does the vehicle operator.

Title
Automatic rearview mirror with filtered light sensors
Application Number
7/43209
Publication Number
4799768
Application Date
April 27, 1987
Publication Date
January 24, 1989
Inventor
Edward A Gahan
Holland
MI, US
Agent
Price Heneveld Cooper DeWitt & Litton
Assignee
Donnelly Corporation
MI, US
IPC
G02B 17/00
G02B 5/08
B60R 1/06
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