Dual-core focusing image sensor, and focusing control method and imaging device thereof

An image sensor and focus control technology, which is applied in solid-state image signal generators, image communication, image signal generators, etc., can solve the problems of dual-core focusing difficulties and reduced light flux, and achieve the goal of improving focusing speed and increasing light flux Effect

Active Publication Date: 2017-07-25
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the dual-core full-pixel focusing technology is used for focusing, the photodiode of each pixel is divided into two, which reduces the amount of light passing through, which in turn makes dual-core focusing difficult in low-light environments.

Method used

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  • Dual-core focusing image sensor, and focusing control method and imaging device thereof
  • Dual-core focusing image sensor, and focusing control method and imaging device thereof
  • Dual-core focusing image sensor, and focusing control method and imaging device thereof

Examples

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example 1

[0060] Example 1, the focus photosensitive unit is divided from the left and right sides.

[0061] In this example, the 2*2 photosensitive pixels in the focus photosensitive unit are divided into two parts on the left and right sides. A part of the photosensitive pixels in the focus photosensitive unit can be the two photosensitive pixels on the left side of the 2*2 photosensitive pixels. The output value of the two "1"s on the left side of the unit is used as the first output value, and the output value of the two "2"s on the right side of the focus photosensitive unit is used as the second output value.

example 2

[0062] In the second example, the focusing photosensitive unit is divided from the upper and lower sides.

[0063] In this example, the 2*2 photosensitive pixels in the focusing photosensitive unit are divided into upper and lower parts, and a part of the photosensitive pixels in the focusing photosensitive unit can be the two photosensitive pixels on the upper side of the 2*2 photosensitive pixels. The output value of the two "1"s on the upper side of the unit is used as the first output value, and the output value of the two "2"s on the lower side of the focusing photosensitive unit is used as the second output value.

example 3

[0064] Example 3, divide the focusing photosensitive unit from the diagonal side.

[0065] In this example, the 2*2 photosensitive pixels in the focusing photosensitive unit are divided into two parts according to two diagonal lines, that is, the photosensitive pixel in the upper left corner and the photosensitive pixel in the lower right corner are part of it, that is, the upper left corner of the focusing photosensitive unit The output value of the two "1"s in the lower right corner and the lower right corner is used as the first output value, and the output value of the two "2"s in the lower left corner and the upper right corner is used as the second output value.

[0066] In an embodiment of the present invention, after the first output value and the second output value are read, the first phase difference information can be obtained according to the first output value and the second output value.

[0067] For example, taking the output values ​​of the photosensitive pixe...

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Abstract

The invention discloses a dual-core focusing image sensor, and a focusing control method and an imaging device thereof. The dual-core focusing image sensor comprises a photosensitive unit array, a filtering unit array arranged on the photosensitive unit array, and a micro lens array located on the filtering unit array, wherein the micro lens array comprises a first micro lens and a second micro lens, one first micro lens covers one white filtering unit, one white filtering unit covers one focusing photosensitive unit, the focusing photosensitive unit comprises N*N photosensitive pixels, each photosensitive pixel corresponding to a photodiode, the photodiode is fan-shaped, and one second micro lens covers one dual-core focusing photosensitive pixel. The dual-core focusing image sensor in the embodiment of the invention can increase the quantity of light of the focusing pixels and provide a hardware foundation for improving the focusing speed in a low light environment.

Description

technical field [0001] The invention relates to the technical field of image equipment, in particular to a dual-core focus image sensor, a focus control method and an imaging device thereof. Background technique [0002] Among related focusing technologies, dual-core full-pixel focusing technology has become the most advanced focusing technology on the market. Compared with contrast focusing, laser focusing and phase focusing technologies, the dual-core full-pixel focusing technology has a faster focusing speed and a wider focusing range. In addition, due to the dual-core full-pixel focusing technology, the "dual-core" photodiodes are "merged" into one pixel for output during imaging, which can ensure the focusing performance without affecting the image quality. [0003] However, when the dual-core full-pixel focusing technology is used for focusing, the photodiode of each pixel is divided into two, which reduces the amount of light passing through, which in turn makes dual...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232H04N5/225H04N9/04
CPCH04N23/55H04N23/67H04N23/10
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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