Illumination – Sound equipment illuminator
Patent
1990-06-15
1992-09-01
Husar, Stephen F.
Illumination
Sound equipment illuminator
362 74, 362295, 362802, 315 77, 315156, B60Q 300
Patent
active
051434377
ABSTRACT:
The brightness within a vehicle room is adjusted according to external brightness (i.e. illuminance or luminance) at night in such a way that the brightness is increased with increasing external brightness and decreased with decreasing external brightness, under due consideration of human eye adaptation to external lightness and darkness. Therefore, the passenger can read a book, for instance, at roughly a constant visual sensitivity, without being subjected to the influence of change in external illuminance or luminance.
REFERENCES:
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patent: 2882450 (1959-04-01), McCabe
patent: 4217628 (1980-08-01), Windom
patent: 4231082 (1980-10-01), Bull
patent: 4236101 (1980-11-01), Luchaco
patent: 4388558 (1983-06-01), Mizuno et al.
patent: 4670819 (1987-06-01), Boerema et al.
Choji Shinichiro
Matsuno Yohsio
Sasaki Ken-ichi
Tanabe Yoshinori
Husar Stephen F.
Matsushita Electric - Industrial Co., Ltd.
Nissan Motor Company Limited
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