Optical lens rectilinear motion zoom optical system

Abstract

The invention belongs to the optical field, and particularly relates to an optical lens linear motion zoom optical system. The system comprises a fixing frame with the interior being a cavity, a first lens set, a second lens set, a zoom lens assembly, a driving device and at least three sets of guide assemblies, wherein the first lens set and the second lens set are fixed at the two ends of the fixing frame respectively, the zoom lens assembly is arranged between the first lens set and the second lens set, the driving device is used for enabling the zoom lens assembly to make reciprocating linear motion, the at least three sets of guide assemblies are fixedly arranged and evenly distributed on the inner surface of the fixing frame, and the at least three sets of guide assemblies are used for supporting and guiding the zoom lens assembly. According to the optical lens linear motion zoom optical system, the problems that an existing mechanical compensation continuous zoom optical device is low in zoom accuracy, high in manufacturing cost, large in equipment size and non-adjustable in motion curve are solved.

Description

technical field [0001] The invention belongs to the field of optics, and relates to an optical lens zoom system, in particular to an optical lens linear motion zoom optical system. Background technique [0002] Mechanically compensated continuous zoom optical system, the traditional method is mainly to use a mechanical cam mechanism to realize the continuous zoom of the zoom optical lens. There are various types of mechanical cams, which are divided into three types: disc cams, moving cams, and cylindrical cams according to the cam shape. In the lens movement mechanism, a cylindrical cam is mainly used. There are two groups of curved grooves on the circumference of the cam, and the two groups of grooves are processed according to the optical performance curve, so that when the zoom group moves, the compensation group moves accordingly for compensation. [0003] In the mechanical cam mechanism, there are mainly rotating motors, cams, guide pins, moving mirror groups, and ou...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a linear motion zoom optical system of an optical lens, which solves the problems of low zoom accuracy, high manufacturing cost, large equipment volume, and non-adjustable motion curves of existing mechanically compensated continuous zoom optical devices.

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