Imaging system and electronic apparatus

Patent metadata

Field	Value
Publication number	US-10044993-B2
Application number	US-201615283745-A
Country	US
Kind code	B2
Filing date	Oct 3, 2016
Priority date	Oct 6, 2011
Publication date	Aug 7, 2018
Grant date	Aug 7, 2018

Abstract

An imaging system and an electronic apparatus are provided and include an image pickup device including a plurality of pixels; a variable filter provided on a light receiving face of the image pickup device, the variable filter is configured to selectively transmit incident light; wherein the image pickup device is coupled to the variable filter via an anisotropic conductive film and a connection bump.

First claim

The invention is claimed as follows:

1. An imaging system comprising:
an image pickup device including a plurality of pixels;
a variable filter provided on a light receiving face of the image pickup device, the variable filter is configured to selectively transmit incident light; and
a filter drive section configured to control the variable filter, wherein the filter drive section includes a digital potentiometer, an operation amplifier and a transistor;
wherein the image pickup device is coupled to the variable filter via an anisotropic conductive film and a connection bump,
wherein a second terminal of the transistor is connected with an output terminal of the digital potentiometer and the digital potentiometer is provided between the operation amplifier and the transistor, and wherein a third terminal of the transistor is connected to the variable filter.

2. The imaging system according to claim 1 , wherein the variable filter includes a plurality of liquid crystal units and a plurality of polarizing plates, and wherein the plurality of liquid crystal units and the plurality of polarizing plates are provided alternately in a thickness direction.

3. The imaging system according to claim 1 , wherein a first terminal of the transistor is connected to a selection line.

4. The imaging system according to claim 3 , wherein the first terminal is a gate and the second terminal is a drain or a source.

5. The imaging system according to claim 1 , wherein
the filter drive section is configured to control the variable filter to allow light including Red, Green, Blue, and near-infrared light to be transmitted time-divisionally.

6. The imaging system according to claim 1 , wherein the pixels are arranged two-dimensionally.

7. The imaging system according to claim 1 , wherein the variable filter is provided integrally over the pixels.

8. The imaging system according to claim 1 , wherein
the variable filter includes a liquid crystal Lyot filter.

9. The imaging system according to claim 1 , wherein
the variable filter includes a piezoelectric Fabry-Perot interferometer.

10. The imaging system according to claim 1 , wherein
the image pickup device includes a back illumination type image sensor.

11. An electronic apparatus comprising:
an image pickup unit including an image pickup device including a plurality of pixels;
a variable filter provided on a light receiving face of the image pickup device, the variable filter is configured to selectively transmit incident light; and
a filter drive section configured to control the variable filter, wherein the filter drive section includes a digital potentiometer, an operation amplifier and a transistor,
wherein the image pickup device is coupled to the variable filter via an anisotropic conductive film and a connection bump,
wherein a second terminal of the transistor is connected with an output terminal of the digital potentiometer and the digital potentiometer is provided between the operation amplifier and the transistor, and wherein a third terminal of the transistor is connected to the variable filter.

12. The electronic apparatus according to claim 11 , wherein the variable filter includes a plurality of liquid crystal units and a plurality of polarizing plates, and wherein the plurality of liquid crystal units and the plurality of polarizing plates are provided alternately in a thickness direction.

13. The electronic apparatus according to claim 11 , wherein a first terminal of the transistor is connected to a selection line.

14. The electronic apparatus according to claim 13 , wherein the first terminal is a gate and the second terminal is a drain or a source.

15. The electronic apparatus according to claim 11 , wherein
the filter drive section is configured to control the variable filter to allow light including Red, Green, Blue, and near-infrared light to be transmitted time-divisionally.

16. The electronic apparatus according to claim 11 , wherein the variable filter includes a liquid crystal Lyot filter.

17. The electronic apparatus according to claim 11 , wherein the variable filter includes a piezoelectric Fabry-Perot interferometer.

18. The electronic apparatus according to claim 11 , wherein the image pickup device includes a back illumination type image sensor.

Assignees

• Sony Corp

Inventors

• Morimoto Rui

Classifications

• H04N23/6845

  by combination of a plurality of images sequentially taken · CPC title

• H04N23/11

  for generating image signals from visible and infrared light wavelengths · CPC title

• H04N25/11 Primary

  Arrangement of colour filter arrays [CFA]; Filter mosaics · CPC title

• G02F1/133528

  Polarisers · CPC title

• G02F1/13306

  Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence) · CPC title