3x zoom machine vision lens

Abstract

The invention discloses a 3X zoom machine vision lens. The 3X zoom machine vision lens comprises a lens combination structure; the lens combination structure includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a diaphragm, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens and a thirteenth lens; the axes of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the diaphragm, the seventh lens, the eighth lens, the ninth lens, the tenth lens, the eleventh lens, the twelfth lens and the thirteenth lens are located on the same horizontal line; the first lens, the second lens and the third lens constitute a first lens group; the fourth lens, the fifth lens and the sixth lens constitute a second lens group; the seventh lens, the eighth lens, the ninth lens and the tenth lens constitute a third lens group; and the eleventh lens, the twelfth lens and the thirteenth lens constitute a fourth group. According to the 3X zoom machine vision lens of the invention, the first lens group, the second lens group, the third lens group and the fourth group cooperate with one another, so that the pixel value of the 3X zoom machine vision lens can achieve 5 million pixels when a working distance is 90mm, and the size of a corresponding chip is 2 / 3, and therefore, the requirements of high-end products can be satisfied; and the light passing aperture of the 3X zoom machine vision lens can be flexibly adjusted.

Description

technical field [0001] The invention relates to the technical field of optical mirrors, in particular to a 3X variable magnification machine vision lens. Background technique [0002] Machine vision is the use of machines instead of human eyes for measurement and judgment. The machine vision system refers to converting the ingested target into an image signal through a machine vision product (that is, an image capture device, which is divided into two types: CMOS and CCD), and sending it to a dedicated image processing system. The image system performs various calculations on these signals to extract the characteristics of the target, and then controls the on-site equipment actions according to the results of the discrimination. [0003] In recent years, with the rapid development of the microelectronics industry, machine vision systems with high resolution and high processing speed have been born continuously, which puts forward new requirements for the matching optical le...

AI Technical Summary

Problems solved by technology

However, for domestic machine vision lenses whose working distance is fixed within the range of 90mm, when the chip size is 2 / 3", the pixels cannot reach 5 million, which cannot meet the needs of high-end products.

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