Lens system for detecting small-caliber 360-degree inner wall

Abstract

The invention discloses a lens system for detecting a small-caliber 360-degree inner wall. A whole optical system comprises a first single negative spherical lens, a second diaphragm unit, a third single positive spherical lens, a fourth single negative spherical lens, a fifth single positive spherical lens, a sixth single positive spherical lens and a seventh single positive spherical lens from the object space. The fourth single negative spherical lens and the fifth single positive spherical lens are combined into an adhesive lens. With the rapid growth of modern industrial production, the development of industrial inspection becomes more and more mature, but inner hole inspection of some workpieces is difficult to realize. The lens system for detecting the small-caliber 360-degree innerwall is mainly designed for the difficult problem that the inner hole inspection is difficult to realize. The lens system for detecting the small-caliber 360-degree inner wall can detect the entire 360-degree inner wall, and the diameter of the caliber of the inner wall can be detected from 8 mm to 120 mm. Only six lenses are used, the lens system for detecting the small-caliber 360-degree innerwall is simple in structure, convenient to manufacture and low in cost.

Description

technical field [0001] The invention relates to the technical field of cameras, in particular to a lens system for detecting small-diameter 360° inner walls. Background technique [0002] With the rapid growth of modern industrial production, the development of industrial inspection is becoming more and more mature, but it is difficult to realize the inner hole inspection of some workpieces. In the machine vision system, there are certain restrictive factors due to ordinary optical lenses, such as three-dimensional products. , the side wall of the inner hole, the outer wall of the cylinder and other appearances cannot be detected. The 360° inner wall inspection lens can effectively solve the problem of detecting the side wall of the inner hole, so the 360° inner wall inspection lens system can improve the general inspection method in the machine vision system. Contents of the invention [0003] The present invention overcomes the deficiency of ordinary lenses in current m...

AI Technical Summary

Problems solved by technology

[0003] The present invention overcomes the deficiency of ordinary lenses in current machine vision systems, and aims to provide a design for the difficult problem of inner hole detection. The present invention can detect the entire 360° inner wall, and the diameter of the inner wall can be detected from 8mm A lens system for detecting small-diameter 360° inner walls up to 120mm to solve the problems raised in the above-mentioned background technology

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