Lens adjustable in coaxiality of front lens group and rear lens group

Abstract

The invention discloses a lens adjustable in the coaxiality of a front lens group and a rear lens group. The lens comprises the front lens group, the rear lens group and a first main cylinder. The front lens group comprises a front lens cone and a lens sheet, a rear lens group comprises a rear lens cone and a lens sheet, the front lens cone is fixedly connected to the front portion of an inner hole of the main cylinder, the rear lens cone is arranged on the rear portion of the inner hole of the first main cylinder in a sleeved mode, and a shoulder matched with the end face of the front portion of the rear lens cone is arranged in the middle of the inner hole of the first main cylinder. Three first radial holes with the same diameter are formed in the outer circumference of the rear portion of the first main cylinder at a 120-degree interval, three grooves are formed in the positions, located on the peripheries of the three first radial holes, on the outer circumference of the first main cylinder, steel balls with the same diameter are installed in the three first radial holes respectively, one end of each of three elastic sheets is pressed on the corresponding steel ball, the other ends of the three elastic sheets are locked on the bottom surfaces of the three grooves through screws respectively, an annular groove corresponding to the three first radial holes is formed in the outer circumference of the rear lens cone, and the front side face of the annular groove is a conical surface and meanwhile is matched with the three steel balls. The lens can improve the coaxial accuracy of the front lens group and the rear lens group, and the imaging quality of the lens can be improved.

Description

technical field [0001] The invention relates to the technical field of camera lens manufacturing, in particular to a lens with adjustable coaxiality of a front mirror group and a rear mirror group. Background technique [0002] In the manufacturing process of the existing camera lens, for the lens with the front mirror group and the rear mirror group, the front mirror group and the rear mirror group are usually mounted on the same main barrel. Due to the manufacturing error and assembly error of the parts, the front mirror It is difficult to further improve the coaxial precision of the lens group and the rear mirror group, and it is difficult to control the coaxial precision within 0.005mm according to the existing technological level, so the imaging quality of the lens is difficult to further improve. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a lens with adjustable coaxiality of the front mirror group and...

AI Technical Summary

Problems solved by technology

[0002] In the manufacturing process of the existing camera lens, for the lens with the front mirror group and the rear mirror group, the front mirror group and the rear mirror group are usually mounted on the same main barrel. Due to the manufacturing error and assembly error of the parts, the front mirror It is difficult to further improve the coaxial precision of the lens group and the rear mirror group. According to the existing technology level, the coaxial precision is difficult to control within 0.005mm, so the imaging quality of the lens is difficult to further improve

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