Image sensor, light intensity sensing system and method

An image sensor and light intensity perception technology, applied in the field of image processing, can solve the problem of slow adjustment speed and achieve the effect of less time consumption

Active Publication Date: 2020-06-26
HEREN KEJI SHENZHEN LLC
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Problems solved by technology

[0006] Based on this, in order to solve the problem in the prior art that the adjustment speed of the exposure time is slow in the photometric adjustment of the image sensor using the traditional imaging, an image sensor is proposed, which can be used to sense the ambient light intensity to adjust the exposure time. specific:

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  • Image sensor, light intensity sensing system and method
  • Image sensor, light intensity sensing system and method
  • Image sensor, light intensity sensing system and method

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] Due to the limited dynamic range, the pictures taken by ordinary cameras usually only have 256 brightness ranges, so the pictures taken by taking pictures are usually LDR (English: Low Dynamic Range, Chinese: Low Dynamic Range) images. When taking pictures, the external lighting environment is different. The generated LDR image will produce different exposure effects, and the same external lighting environment, different exposure durations will also produce d...

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Abstract

The embodiment of the invention discloses an image sensor, which comprises a photosensitive surface, one or more than one sensing pixel area is arranged on the photosensitive surface, and the sensingpixel area comprises at least two groups of sensing pixel blocks; the optical thin film arrays are arranged on the surfaces of the sensing pixel blocks, the optical thin film arrays on the surfaces ofthe sensing pixel blocks in the same group are the same in thickness, and the optical thin film arrays on the surfaces of the sensing pixel blocks in different groups are different in thickness; andthe thickness of the optical film array on the surface of a sensing pixel block corresponds to the exposure delay of the sensing pixel block. Moreover, the embodiment of the invention discloses a light intensity sensing method and system based on the image sensor, and the method and system can sense the ambient light intensity more quickly, thereby reducing the response time of automatic exposure.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an image sensor, light intensity sensing system and method. Background technique [0002] Image sensors in traditional technology usually can only effectively detect images with low dynamic range (LDR: Low Dynamic Range). It is necessary to meter the scene to be photographed, so as to determine a reasonable exposure time for automatic exposure. [0003] At present, most commercial camera equipment integrates the sensor responsible for light metering behind the imaging lens through TTL (Through The Lens) to reduce the error between the imaging sensor and the light metering sensor. There are two types of separation and integration. . [0004] The separate type includes two sensors, one sensor is responsible for imaging, and the other is responsible for detecting light intensity. Although it can provide better light metering effect, it will add additional electronic components and ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/235H04N5/225
CPCH04N23/54H04N23/71H04N23/73
Inventor 王星泽赖嘉炜
Owner HEREN KEJI SHENZHEN LLC
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