Light detecting device
AssigneeDenso Corporation
InventorKoichi Goto
Life of this patent
Estimating the term…
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.
Claims13
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 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.
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 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.
Dependencies are inferred from the claim text.