ON-VEHICLE IMAGING DEVICE
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Abstract
A vehicle-mounted imaging device that is mounted in an automobile and performs color imaging has been provided with a plurality of two-dimensionally arranged pixel cells. In each of the pixels, a color filter separates incident light by a multilayer interference filter. The multilayer interference filter is composed of two λ/4 multilayer films and a spacer layer sandwiched therebetween. The multilayer interference filter transmits light in a wavelength region that corresponds to an optical thickness of the spacer layer. The λ/4 multilayer films and spacer layer are composed of inorganic materials.
177 Citations
8 Claims
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1-5. -5. (canceled)
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6. A vehicle-mounted imaging device that is mounted to an automobile and performs color imaging, the vehicle-mounted imaging device including a plurality of two-dimensionally arranged pixel cells that each includes a photodiode formed on a semiconductor substrate, and in each of which a color filter disposed over the photodiode selectively transmits a wavelength of incident light, wherein
the color filter is composed of an inorganic material, and the vehicle-mounted imaging device is mounted in an engine compartment of the automobile.
Specification