Imaging device and electronic apparatus
The present technology relates to an imaging device capable of selectively taking out only a specific electromagnetic wavelength and generating a signal with an enhanced wavelength resolution, and an electronic apparatus. There are provided a first pixel including a metallic thin film filter configured to transmit a light in a first frequency band and a second pixel including a color filter configured to transmit a light in a second frequency band wider than the first frequency band. A signal in a third frequency band is generated from the respective signals of a plurality of first pixels each including a metallic thin film filter configured to transmit a light in the different first frequency bands. The present technology can be applied to a CMOS image sensor of backside irradiation type or surface irradiation type, for example.
1. An imaging device comprising:
a first pixel including a metallic thin film filter configured to transmit light in a first frequency band; and
a second pixel including a color filter configured to transmit light in a second frequency band wider than the first frequency band,
wherein a signal in a third frequency band is generated from respective signals of a plurality of first pixels each including a metallic thin film filter configured to transmit a light in different first frequency bands and wherein a signal for a color image is generated from a signal in the third frequency band and a signal of the second pixel.
2. The imaging device according to claim 1 ,
wherein the third frequency band includes a red frequency band.
3. The imaging device according to claim 1 ,
wherein the third frequency band includes a blue frequency band.
4. The imaging device according to claim 1 ,
wherein the second frequency band includes a green frequency band.
5. The imaging device according to claim 1 ,
wherein the second frequency band includes a white frequency band.
6. The imaging device according to claim 1 ,
wherein the metallic thin film filter is configured of a plasmon resonator.
7. The imaging device according to claim 1 ,
wherein the metallic thin film filter includes a plasmon filter in a hole array structure.
8. The imaging device according to claim 1 ,
wherein the metallic thin film filter includes a plasmon filter in a dot array structure.
9. The imaging device according to claim 1 ,
wherein the metallic thin film filter includes a Fabry-Perot interference filter.
10. An imaging device comprising:
a first pixel including a metallic thin film filter configured to transmit light in a first frequency band; and
a second pixel including a color filter configured to transmit light in a second frequency band wider than the first frequency band,
wherein a signal in a third frequency band is generated from respective signals of a plurality of first pixels each including a metallic thin film filter configured to transmit a light in different first frequency bands, and wherein a signal for a multispectral image is generated from a signal in the third frequency band and a signal of the second pixel.
11. An imaging device comprising:
a first pixel including a metallic thin film filter configured to transmit light in a first frequency band; and
a second pixel including a color filter configured to transmit light in a second frequency band wider than the first frequency band,
wherein a signal in a third frequency band is generated from respective signals of a plurality of first pixels each including a metallic thin film filter configured to transmit a light in different first frequency bands, and wherein the first pixel divides the third frequency band into a plurality of frequency bands and receives lights in the respective frequency bands.
12. An electronic apparatus comprising:
an imaging device; and
signal processing circuitry configured to process a signal output from the imaging device,
wherein the imaging device includes:
a first pixel including a metallic thin film filter configured to transmit light in a first frequency band; and
a second pixel including a color filter configured to transmit light in a second frequency band wider than the first frequency band,
wherein a signal in a third frequency band is generated from respective signals of a plurality of first pixels each including a metallic thin film filter configured to transmit a light in different first frequency bands and wherein a signal for a color image is generated from a signal in the third frequency band and a signal of the second pixel.