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Light source and setting method thereof, and optical detection method and system

A technology of light source and luminous intensity, which is applied in the field of optical detection, can solve the problems of no image feedback adjustment, etc., and achieve the effects of improving image brightness, saving detection time, and facilitating productization

Pending Publication Date: 2021-07-23
WUHAN JINGCE ELECTRONICS GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another form is commonly used projectors and projectors, which are used to display and play images and videos, and can project rich images on the illuminated plane, but their purpose is to display projected images, and there is no Make feedback adjustment function

Method used

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  • Light source and setting method thereof, and optical detection method and system
  • Light source and setting method thereof, and optical detection method and system

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Embodiment Construction

[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0054] In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other. The present invention will be further described in detail below in combination with specific embodiments.

[0055] The technical terms involved in the present invention are explained as follows:

[0056] Lcos: Liquid Crystal on Silicon, that is, liquid crystal on silicon.

[0057] In one embodiment, a method for setting a light source is provided, the method comprising the steps of:

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Abstract

The invention discloses a light source and a setting method thereof, and an optical detection method and system. The method comprises the following steps: acquiring image gray level distribution characteristic data of a standard sample in a camera view field range; adjusting the light-emitting intensity distribution of a light source according to the image gray level distribution characteristic data, wherein the light source is an area array light-emitting device, and the area array light-emitting device comprises a light-emitting unit with controllable light-emitting intensity; and using an adjusted light source to illuminate a detected product, adjusting the luminous intensity distribution of an area array illumination light source, feeding back the compensated brightness distribution to the light source, and carrying out illumination for compensating the brightness distribution. Image saturation of a high-reflection area is avoided, and meanwhile the image brightness of a low-reflection area is improved. Therefore, the detection precision of the detected object irradiated by the light source is improved.

Description

technical field [0001] The invention belongs to the technical field of optical detection, and in particular relates to a light source and its setting method, an optical detection method and a system. Background technique [0002] The composition of product appearance defect detection equipment usually includes lighting source, light source controller, industrial camera, lens and image analysis and processing software. Among them, the function of lighting source is to show the defects on the product, and the basic principle of displaying defects is to highlight the defect area The difference between the normal area of ​​the product where the defect is located and the physical quantity that can be perceived by the human eye, this difference is usually the difference in light intensity and color. [0003] For example, area-array light-emitting devices such as LCD, OLED, Mini LED, and Micro LED, which are currently mainly used for image display, are highly flexible and controlla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/88G01N21/01H05B47/10H05B47/155
CPCG01N21/8806G01N21/01H05B47/10H05B47/155G01N2021/8835G01N2201/061
Inventor 于常青
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD
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