Sunlight sensor that detects a distrubition and amount of thermal load
First Claim
Patent Images
1. A sunlight sensor comprising:
- light-cutoff means that selectively transmits sunlight;
light-detection means having a plurality of planar shaped light-detection sections positioned in a same plane; and
an intermediate element between said light-detection sections and said light-cutoff means, said intermediate element passes sunlight selectively transmitted by said light-cutoff means, anddetecting means for detecting both the distribution and total amount of thermal load present in an environment in which said sensor is located in accordance with outputs of said plurality of light-detection sections, wherein said light-detection sections are shaped and positioned relative to said light-cutoff means such that an output of said light-detection means is directly proportional to said thermal load.
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Abstract
A sunlight sensor for use in control of vehicle air conditioners, and provides which detects the sunlight thermal load. A light-cutoff film is formed on the upper surface of the transparent substrate (intermediate element) of the light-sensing element, and at the center of this light-cutoff film is formed a light-guiding hole. Left and right light-detection sections and are formed on the lower surface of the transparent substrate.
74 Citations
33 Claims
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1. A sunlight sensor comprising:
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light-cutoff means that selectively transmits sunlight; light-detection means having a plurality of planar shaped light-detection sections positioned in a same plane; and an intermediate element between said light-detection sections and said light-cutoff means, said intermediate element passes sunlight selectively transmitted by said light-cutoff means, and detecting means for detecting both the distribution and total amount of thermal load present in an environment in which said sensor is located in accordance with outputs of said plurality of light-detection sections, wherein said light-detection sections are shaped and positioned relative to said light-cutoff means such that an output of said light-detection means is directly proportional to said thermal load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A sunlight sensor comprising:
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light-cutoff means provided with an aperture; and a light-detection section which outputs a detection signal in accordance with the amount of received sunlight, configured so that the total amount of surface area of said light-detection section onto which said sunlight which passes through said aperture is varied in accordance with the direction of incidence of said sunlight and so that a portion of said light-detection section is always shaded by said light-cutoff means regardless of an angle of said sunlight relative to said sunlight sensor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A sunlight sensor comprising:
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light-cutoff means capable of transmitting selected sunlight only; and light-detection section which outputs a signal responsive to a thermal load of an environment in which said sensor is mounted by causing the total area of said light-detection section illuminated by said sunlight which passes through said light-cutoff means to vary a direction of incidence of said sunlight varies, said signal being directly proportional to said thermal load.
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26. A sunlight sensor comprising:
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light-cutoff means provided with an aperture; and a light-detection section which outputs a light-detection signal responsive to the overall amount of light received thereby, said light-cutoff means and said light-detection section being shaped and positioned with respect to one another such that within a given range of sunlight elevation angle, as said elevation angle of said sunlight increases, an overall region of said light-detection section illuminated is reduced, so that said detection signal of said light-detection section is varied. - View Dependent Claims (27)
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28. A sunlight sensor located inside vehicle compartment, comprising:
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light-cutoff means having an aperture defined therein; and light-detection means which outputs a detection signal representative of an amount of heat received inside said compartment, said amount of heat being determined based only on an overall region of said light detection means illuminated by said sunlight selected by said light-cutoff means. - View Dependent Claims (29)
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30. A sunlight sensor comprising:
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light-cutoff means having an aperture; a light-detection section provided on a side of said light-cutoff means opposite from a side of sunlight incidence, which outputs a signal representative of a total amount of received heat in an environment associated with said sensor, said signal having a direct correlation to said total amount of received heat; and a sunlight direction changing means which causes said sunlight passing through said aperture to strike said light-detection section. - View Dependent Claims (31)
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32. A sunlight sensor comprising:
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a semiconductor light-detection element which outputs a detection signal representative of an overall amount of light received thereby and which is directly proportional to a thermal load of an environment in which said sensor in located; an insulating layer having optical transmissivity and disposed on said semiconductor light-detection element; light-cutoff means disposed on said insulating layer and which transmits selected sunlight; and an amplifier circuit which is formed as one with said semiconductor light-detection element and amplifies said detection signal output by said semiconductor light-detection element.
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33. A sunlight sensor comprising:
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first light-cutoff means that selectively transmits sunlight; a light detection section which outputs a detection signal responsive to an overall amount of received sunlight; and second light-cutoff means located between said first light-cutoff means and said light-detection section, the light-detection section, first and second cut-off means being shaped and positioned relative to one another so that the overall amount of surface area of said light detection section illuminated by said sunlight which is transmitted by said first light-cutoff means changes as an elevation of said sunlight changes so that a detection signal is output by said light detection section which is directly proportional to a thermal load of the environment in which said sensor is located.
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Specification