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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0043868 (1993-04-07) |
| 발명자 / 주소 |
|
| 인용정보 | 피인용 횟수 : 324 인용 특허 : 0 |
A combined ambient light magnitude and light source direction sensor controls the headlamps and cabin climate of a vehicle. The combined unit employs a photodiode having a predetermined spectral response and a diffuser which also has a predetermined spectral response, the spectral responses being co
A combined ambient light magnitude and light source direction sensor controls the headlamps and cabin climate of a vehicle. The combined unit employs a photodiode having a predetermined spectral response and a diffuser which also has a predetermined spectral response, the spectral responses being combined to achieve an overall spectral response which corresponds to that of the human eye. With this arrangement, the headlamps of a motor vehicle are turned on and off under different ambient light conditions, in a manner which corresponds to the perception of the driver. In addition, a light modulator provides the combined unit with a sensitivity to the angular location of the sun with respect to the vehicle in which the unit is installed. Such angular sensitivity facilitates in determining the portion of the interior of the vehicle undergoing thermal loading by the sun, and facilitates a corresponding adjustment of the climate control system.
A photosensor arrangement for producing an electrical signal responsive to an input light, the photosensor arrangement comprising: light diffuser means having a diffuser input for receiving the input light and a diffuser output for producing a diffused output light which is scattered in many directi
A photosensor arrangement for producing an electrical signal responsive to an input light, the photosensor arrangement comprising: light diffuser means having a diffuser input for receiving the input light and a diffuser output for producing a diffused output light which is scattered in many directions unrelated to a direction of incidence of the input light, said light diffuser means having a predetermined spectral characteristic whereby the diffuser output light corresponds to the input light modified in accordance with the predetermined diffuser spectral characteristic; light sensor means having a sensor light input for receiving the diffused output light and an output terminal for providing an output electrical signal responsive to said diffused output light, said light sensor means having a predetermined sensor spectral characteristic whereby the output electrical signal is representative of a response characteristic applied to the input light which corresponds to that of a human eye; and light modulator means arranged in the vicinity of said diffuser input of said light diffuser for determining a position-responsive sensitivity characteristic of the photosensor arrangement, whereby said output electrical signal is responsive to the position of a source of the input light.
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