Coaxial lighting AOI light source device

Abstract

The invention discloses a coaxial lighting AOI light source device. The device comprises a coaxial light fixed plate, a diffusion plate, a semi-permeable mirror, four groups of LED lamp panels, an upper cover, a middle cover and a lower cover, wherein the four groups of the LED lamp panels are a first group of the LED lamp panels, a second group of the LED lamp panels, a third group of the LED lamp panels and a fourth group of the LED lamp panels respectively from top to bottom in turn; the diffusion plate, the semi-permeable mirror and the first group of the LED lamp panels are respectively arranged on the coaxial light fixed plate; the semi-permeable mirror has an inclined mirror body; the first group of the LED lamp panels are positioned on one side of the semi-permeable mirror; the diffusion plate is arranged between the semi-permeable mirror and the first group of the LED lamp panels for separating; distance between the diffusion plate and the semi-permeable mirror forms an epi-illumination area; the second, the third and the fourth groups of the LED lamp panels are respectively arranged on the upper, the middle and the lower covers respectively; and the upper, the middle and the lower covers are arranged below the epi-illumination area sequentially from the top to the bottom. The coaxial lighting AOI light source device has the advantages of providing an all-angle lighting environment, and better displaying image characteristics in an AOI detection field, along with rational structure.

Description

technical field [0001] The invention relates to an LED light source device, in particular to an AOI light source device for coaxial illumination. Background technique [0002] In the entire production process of electronic production, SMT surface mount and other fields, it is necessary to conduct appearance quality inspection and quality control of the involved electronic components, patches, etc., and to detect whether there are defects on the surface of components and patches through the irradiation of light sources , to exclude components and patches that do not meet the standards, and avoid the waste of rework in the later stage. However, the existing AOI light source devices mostly use LEDs as light sources for illumination. [0003] However, due to the influence of the structure of the traditional AOI light source device, when shooting, the imaging light source must keep the position of the shooting hole, making the lighting blind area under the shooting hole, and the ...

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Problems solved by technology

[0003] However, due to the influence of the structure of the traditional AOI light source device, when shooting, the imaging light source must keep the position of the shooting hole, making the lighting blind area under the shooting hole, and the field of view image under the shooting hole is very different from other positions, which seriously affects Automatic Optical Inspection Effect

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