Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1990-11-19
1992-09-15
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
359602, H01J 4014
Patent
active
051480140
ABSTRACT:
A light transmitting system for a vehicle includes a window or mirror with variable transmittance. A first input device, which may comprise a user adjustable device or an ambient light sensor, provides a comfort setting. A second input device, which overrides the first, may be operated manually, or by the vehicle engaging reverse gear or switching on headlights, to increase or decrease the reflectivity and transmittance of mirror and window embodiments respectively. Where a mirror is used, a third input device, which may comprise a photosensor, may be actuated to provide lower reflectivity when experiencing glare.
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Lynam Niall R.
Roberts Dale M.
Allen S.
Donnelly Corporation
Nelms David C.
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