Zoom lens structure suitable for high-magnification lens

Abstract

The invention discloses a zoom lens structure suitable for a high-magnification lens. The zoom lens structure comprises a front lens cone and a rear lens cone, a focusing lens group which can slide inthe front lens cone is arranged in the front lens cone, and a first nut is fixed to the focusing lens group; a focusing motor is arranged on the front lens cone, a first screw in threaded connectionwith the first nut is fixed to the focusing motor, and a first zoom lens group and a second zoom lens group which are independent of each other are slidingly connected in the rear lens cone in the front-rear direction; a second nut and a third nut are fixed to the first zoom lens group and the second zoom lens group respectively, a first zoom lens motor and a second zoom lens motor are arranged onthe rear lens cone, a second screw in threaded connection with the second nut is fixed to the first zoom lens motor, and a third screw in threaded connection with the third nut is fixed to the secondzoom lens motor. The structure is simple, the lens is decomposed into the lens groups, stroke control is conducted through the motors, the stoke displacement is reduced, and the appearance size of the optical lens is reduced.

Description

【Technical field】 [0001] The invention relates to a zoom lens structure suitable for high magnification lenses. 【Background technique】 [0002] With the rapid development of high technology, security optical zoom lens has been widely used. In order to meet the needs of the market, more and more lenses need to use high-resolution large chips, and zoom lenses must also be used in different fields and environments, resulting in a corresponding increase in lens magnification and more and more. , the current zoom lens is a focus group, a zoom group, each with a motor, usually a zoom motor, the test data is a very lengthy table of focus steps, and the convenience will become more and more Difficult to find problems such as out-of-step and backlash of the lens. In the current situation where the magnification requirements are increasing, if the lens needs to achieve a large magnification, the travel distance of the zoom group must be greater and the stroke longer. The longer it h...

AI Technical Summary

Problems solved by technology

In order to meet the needs of the market, more and more lenses need to use high-resolution large chips, and zoom lenses must also be used in different fields and environments, resulting in a corresponding increase in lens magnification and more and more. , the current zoom lens is a focus group, a zoom group, each with a motor, usually a zoom motor, the test data is a very lengthy table of focus steps, and the convenience will become more and more Difficult to find problems such as out-of-step and backlash of the lens. In the current situation where the magnification requirements are increasing, if the lens needs to achieve a large magnification, the travel distance of the zoom group must be greater and the stroke longer. The longer it has to be, and the shape of the lens cannot be enlarged infinitely, and even many application places have space restrictions. In addition, when there is a problem with the zoom group, all parts of the zoom group need to be disassembled for inspection. , it is very troublesome to disassemble and assemble, so the longer and longer motor structure will gradually become tasteless

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