Eccentric adjusting device

Abstract

The invention discloses an eccentric adjusting device which comprises a base, a metal group and three ejector pins, a lens positioning seat is arranged on the base, a light-transmitting area transmitting light in the vertical direction is arranged at the center line of the lens positioning seat, the light-transmitting area can directly face a lens to be adjusted, and three linear fine adjusting mechanisms are arranged in the area, around the center line, of the base; the three ejector pins are arranged on the base and distributed around the center line, the tip ends of the three ejector pins face downwards and point to the center line, the output ends of the three linear fine adjustment mechanisms are connected with the connecting ends of the three ejector pins respectively to drive the ejector pins to slide in the length direction of the ejector pins, and the tip ends of the ejector pins can abut against the peripheral side of a to-be-adjusted lens; the upper end of the metal group is provided with a limiting through hole used for limiting other lenses, and the metal group is arranged on the base in a sliding mode so that the limiting through hole can be located above the light-transmitting area and the ejector pin. The position, the height position, the inclination direction and the inclination angle of the to-be-adjusted lens on the horizontal plane can be adjusted through the three ejector pins, convenience and rapidness are achieved, and the adjusting precision is high.

Description

technical field [0001] The invention relates to the technical field of optical devices, in particular to an eccentricity adjustment device. Background technique [0002] In the optical industry, lenses are an indispensable part. Lenses have superior optical properties and mechanical and chemical properties, have a constant refractive index, and have stable physical and chemical properties. A lens module generally includes multiple lenses, and each lens will inevitably have an optical axis shift. The eccentricity of the aspheric lens in the optical system has the greatest impact on the imaging quality, which reduces the contrast of the entire optical system and the resolution. Poor and low definition, and even cause the lens module to fail. In order to improve the imaging quality of the optical system, optical decentering detection and adjustment are usually performed on the sensitive aspheric lens. [0003] The existing eccentricity adjustment usually uses a ferrule matchi...

AI Technical Summary

Problems solved by technology

[0003] The existing eccentricity adjustment usually uses a ferrule matching the shape of the lens to clamp the aspheric lens, and then uses the XY axis sliding platform to adjust the position of the aspheric lens in the lens module, that is, to adjust the position of the lens to be adjusted. position, other lens positions do not need to be adjusted, this method has relatively high processing requirements for the ferrule, and the adjusted aspheric lens has poor follow-up performance, resulting in a relatively long adjustment time

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