OPTICAL DEVICE AND IMAGING DEVICE
First Claim
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1. An optical device comprising:
- a lens assembly comprising at least one lens for receiving light and a holder for holding the at least one lens;
a circuit board for performing at least one process based on the received light;
a housing having an opening and configured to house the lens assembly and the circuit board therein such that at least part of the circuit board faces the lens assembly, and the lens assembly is exposed via the opening; and
means defining a passage located around the lens assembly to communicate with the opening, the passage guiding air, entering an inside of the housing via the opening, so as not to be directed toward the circuit board.
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Abstract
In an optical device, a lens assembly includes a lens for receiving light and a holder for holding the lens. A circuit board performs at least one process based on the received light. A housing has an opening and is configured to house the lens assembly and the circuit board therein such that at least part of the circuit board faces the lens assembly, and the lens assembly is exposed via the opening. A mechanism for defining a passage located around the lens assembly to communicate with the opening. The passage guides air, entering an inside of the housing via the opening, so as not to be directed toward the circuit board.
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Citations
13 Claims
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1. An optical device comprising:
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a lens assembly comprising at least one lens for receiving light and a holder for holding the at least one lens; a circuit board for performing at least one process based on the received light; a housing having an opening and configured to house the lens assembly and the circuit board therein such that at least part of the circuit board faces the lens assembly, and the lens assembly is exposed via the opening; and means defining a passage located around the lens assembly to communicate with the opening, the passage guiding air, entering an inside of the housing via the opening, so as not to be directed toward the circuit board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An imaging device to be installed in a vehicle, the imaging device comprising:
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a lens assembly comprising at least one lens for receiving light and a holder for holding the at least one lens; an imaging sensor for successively picking up images based on the received light; a circuit board; an image processing circuit implemented in the circuit board and configured to capture the images successively picked-up images, and perform image processing of each of the picked-up images, the image processing circuit comprising; 3.3V signal lines; and external terminals with 1.27 mm or lower pitches the image processing circuit being configured to; receive, via a serial interactive communication bus installed in the vehicle, a signal output from at least one sensor installed in the vehicle, the signal being indicative a travelling condition of the vehicle, and output, based on at least one of a result of the image processing of the image processing circuit and the signal output from the at least one sensor, a control signal to the vehicle via the serial interactive communication bus, the control signal controlling at least one actuator installed in the vehicle; a housing having an opening and configured to house the lens assembly, the circuit board, and the imaging sensor therein such that at least part of the circuit board faces the lens assembly, and the lens assembly is exposed via the opening; and means defining a passage located around the lens assembly to communicate with the opening, the passage guiding air, entering an inside of the housing via the opening, so as not to be directed toward the circuit board.
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13. An optical system comprising:
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a lens assembly comprising at least one lens for receiving light and a holder for holding the at least one lens; a circuit board for performing at least one process based on the received light; a housing having an opening and configured to house the lens assembly and the circuit board therein such that at least part of the circuit board faces the lens assembly, and the lens assembly is exposed via the opening; means defining a passage located around the lens assembly to communicate with the opening, the passage guiding air, entering an inside of the housing via the opening, so as not to be directed toward the circuit board; a bracket attached to a windshield of a vehicle and configured to fix the lens assembly to the windshield; and a hood attached to the bracket and surrounding a field of view of the lens assembly for reducing a possibility that an object located outside of the field of view of the lens assembly is captured by the field of view of the lens assembly.
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Specification