发明名称 |
Optical sensor with directivity controlled |
摘要 |
Plural photodetectors for receiving light and generating detection signals. A light amount controlling portion is arranged above the photodetectors for controlling an amount of the light to the photodetectors according to an incident angle. A weighting portion for weighting sensitivities of the photodetectors respectively. The sensitivities are weighted to provide a total output characteristic of the weighted detection signals of which magnitude varies according to the incident angle. Weighting is provided by a signal processing circuit by controlling gains, or a translucent film on the photodetectors for controlling transparencies portions above respective photodetectors, or opaque films on the photodetectors for controlling amounts of the light to respective photodetectors. A first function signal may be obtained from a part of photodetectors for an air conditioner and a second function signal may be obtained from all of photodetectors for head lamp on/off controlling. Each coaxially arranged photodetector is divided to provide a semicircle or a semi-ring shape arranged with respect to the front direction of the vehicle to provide orientation angle data to control the air conditioner. |
申请公布号 |
US6521882(B1) |
申请公布日期 |
2003.02.18 |
申请号 |
US20000522604 |
申请日期 |
2000.03.10 |
申请人 |
DENSO CORPORATION |
发明人 |
SUMIYA KAZUYOSHI;HORIBA KEIJI;TAKASHIMA MASAKI;TOYODA INAO |
分类号 |
G01J1/04;G01J1/16;G01J1/42;G01J1/44;(IPC1-7):G01J1/42;G01C21/02 |
主分类号 |
G01J1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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