Light detecting device
First Claim
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1. A light detecting device to detect light traveling around a vehicle comprising:
- a case having an opening to be mounted to a windshield of the vehicle, a predetermined light passing through the windshield and the opening;
a first light introducing member located adjacent to the opening, the first light introducing member havingan inlet face into which the predetermined light is incident, andan outlet face to emit the light incident into the inlet face; and
a first light receiving element arranged in the case so as to receive the light emitted from the outlet face, whereinthe first light receiving element outputs a signal corresponding to an intensity of the light received by the first light receiving element,the outlet face has a convex lens shape so as to definea first distance between a top point of the outlet face and a focus of the first light introducing member, anda second distance between the top point of the outlet face and a light receiving face of the first light receiving element, andthe first distance is smaller than the second distance.
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Abstract
A light detecting device includes a case, a light introducing member and a light receiving element. A predetermined light is incident into an inlet face of the introducing member, and an outlet face of the introducing member emits the light incident into the inlet face. A first distance is defined between a top point of the outlet face and a focus of the introducing member, and a second distance is defined between the top point of the outlet face and a light receiving face of the receiving element. The outlet face has a convex lens shape in a manner that the first distance is smaller than the second distance.
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Citations
13 Claims
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1. A light detecting device to detect light traveling around a vehicle comprising:
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a case having an opening to be mounted to a windshield of the vehicle, a predetermined light passing through the windshield and the opening; a first light introducing member located adjacent to the opening, the first light introducing member having an inlet face into which the predetermined light is incident, and an outlet face to emit the light incident into the inlet face; and a first light receiving element arranged in the case so as to receive the light emitted from the outlet face, wherein the first light receiving element outputs a signal corresponding to an intensity of the light received by the first light receiving element, the outlet face has a convex lens shape so as to define a first distance between a top point of the outlet face and a focus of the first light introducing member, and a second distance between the top point of the outlet face and a light receiving face of the first light receiving element, and the first distance is smaller than the second distance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A light detecting device to detect light traveling around a vehicle comprising:
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a case having an opening to be mounted to a windshield of the vehicle, a predetermined light passing through the windshield and the opening; a first light introducing member located adjacent the opening, the first light introducing member having an inlet face into which the predetermined light is incident, and an outlet face to emit the light incident into the inlet face; and a first light receiving element arranged in the case so as to receive the light emitted from the outlet face, wherein the first light receiving element outputs a signal corresponding to an intensity of the light received by the first light receiving element, the inlet face has a first dimension in a predetermined direction, the light emitted from the outlet face has a second dimension in the predetermined direction when the light emitted from the outlet face reaches a light receiving face of the first light receiving element, and the outlet face has a concave lens shape in a manner that the second dimension is larger than the first dimension. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification