Solid-state image capturing device including a photochromic film having a variable light transmittance, and electronic device including the solid-state image capturing device
First Claim
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1. A solid-state image capturing device comprising:
- a semiconductor substrate having a photosensitive surface including a matrix of pixels including respective photoelectric converters; and
a photochromic film disposed in a light path through which light is applied to each of the photoelectric converters, each pixel generating a corresponding pixel signal based on the light applied to the photoelectric converter,wherein,the photochromic film is made of a photochromic material having a light transmittance that varies depending on an intensity of applied light in a predetermined wavelength range,the light transmittance has a half-value period shorter than a duration of one frame corresponding to a period of time during which the pixel signals generated by the pixels are read from all of the pixels, andthe photochromic film has a photoelectric effect and the solid-state image capturing device further comprises a light amount measuring unit that measures an amount of light absorbed by the photochromic film.
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Abstract
A solid-state image capturing device includes: a semiconductor substrate having a photosensitive surface including a matrix of pixels as respective photoelectric converters; and a photochromic film disposed in a light path through which light is applied to each of the photoelectric converters, the photochromic film being made of a photochromic material having a light transmittance variable depending on the intensity of applied light in a predetermined wavelength range; wherein the light transmittance has a half-value period shorter than one frame during which pixel signals generated by the pixels are read from all the pixels.
24 Citations
14 Claims
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1. A solid-state image capturing device comprising:
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a semiconductor substrate having a photosensitive surface including a matrix of pixels including respective photoelectric converters; and a photochromic film disposed in a light path through which light is applied to each of the photoelectric converters, each pixel generating a corresponding pixel signal based on the light applied to the photoelectric converter, wherein, the photochromic film is made of a photochromic material having a light transmittance that varies depending on an intensity of applied light in a predetermined wavelength range, the light transmittance has a half-value period shorter than a duration of one frame corresponding to a period of time during which the pixel signals generated by the pixels are read from all of the pixels, and the photochromic film has a photoelectric effect and the solid-state image capturing device further comprises a light amount measuring unit that measures an amount of light absorbed by the photochromic film. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An electronic device comprising:
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a solid-state image capturing device including an image capturing unit; an optical system for guiding incident light to the image capturing unit of the solid-state image capturing device; and a signal processing circuit for processing an output signal from the solid-state image capturing device, the solid-state image capturing device including; a semiconductor substrate having a photosensitive surface including a matrix of pixels including respective photoelectric converters; and a photochromic film disposed in a light path through which light is applied to each of the photoelectric converters, each pixel generating a corresponding pixel signal based on the light applied to the photoelectric converter, wherein, the photochromic film is made of a photochromic material having a light transmittance that varies depending on an intensity of applied light in a predetermined wavelength range, the light transmittance has a half-value period shorter than a duration of one frame corresponding to a period of time during which the pixel signals generated by the pixels are read from all of the pixels, and the photochromic film has a photoelectric effect and the solid-state image capturing device further comprises a light amount measuring unit that measures an amount of light absorbed by the photochromic film.
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Specification