Optical system for edge patrol inspection of display panel

A technology of display panel and optical system, applied in the field of visual inspection, can solve the problems of equipment redundancy, high cost, narrow operation space, etc., achieve the effect of consistent focal length and save equipment cost

Pending Publication Date: 2022-05-10
HEFEI SHANGJU IND EQUIP +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, the display panel is conveyed by rollers, and a line-scan camera and corresponding light source are respectively placed on the upper and lower sides of the display panel. A tot

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  • Optical system for edge patrol inspection of display panel
  • Optical system for edge patrol inspection of display panel
  • Optical system for edge patrol inspection of display panel

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Embodiment Construction

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is some embodiments of the present invention, but not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present invention, all other implement...

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Abstract

The invention provides a display panel edge patrol inspection optical system, which comprises a light source arranged on one side of a display panel and used for providing incident light; the Porro prism is arranged on one side of the display panel, the rectangular face of the Porro prism is parallel to the display panel, when incident light enters the two inclined faces of the Porro prism, total reflection occurs twice, and the total reflection light returns in the direction of the original incident light; and the camera is used for simultaneously receiving the light reflected by the upper surface of the display panel and the light, totally reflected by the Porro prism, of the lower surface of the display panel, so that the camera can simultaneously carry out defect detection photographing on the upper surface and the lower surface of the display panel. According to the invention, the light is received by the camera after two times of total reflection from the lower surface of the display panel through the Porro prism, one camera and one set of light source are realized to carry out defect detection photographing on the upper surface and the lower surface of the display panel at the same time, the equipment cost is saved, the structural complexity is simplified, and the equipment switching and maintenance efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of visual inspection, in particular to an optical system for patrolling inspection of a display panel. Background technique [0002] Due to the many processes in the processing process of large-sized display panels, they often need to be handled and transported, and edge defects and breakages inevitably occur. Due to the large size of the display panel, it is difficult to arrange the layout of traditional area array ccd cameras and corresponding light sources. In order to save costs and improve adaptability It is usually used for defect detection at 20-40mm from the edge of the display panel using a line scan camera. In the prior art, the display panel is conveyed by rollers, and a line-scan camera and a corresponding light source are respectively placed on the upper and lower sides of the display panel. A total of two sets of optical systems are required, the equipment is redundant, the cost is high, and th...

Claims

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Application Information

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IPC IPC(8): G01N21/01G01N21/95G02B17/04
CPCG01N21/01G01N21/95G02B17/04
Inventor 杨洋
Owner HEFEI SHANGJU IND EQUIP
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