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Structure for ensuring coaxiality of assembled lens cones

A technology of coaxiality and lens barrel, applied in installation, optics, instruments, etc., can solve the problems of keeping the lens distance unchanged, difficult to guarantee the coaxiality, and tilting the lens resolution, and achieves fast upright assembly, low cost, Effects with low assembly requirements

Inactive Publication Date: 2013-01-23
ZHONGSHAN ZHONGYING OPTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the sensitivity of the optical lens to the coaxiality and the existence of gaps in the screw fit, the coaxiality is not easy to guarantee when the group is connected, resulting in tilted and blurred lens resolution
But for ordinary threads, it is very difficult to ensure that the distance and coaxiality of the lenses in the two lens barrels required by the design remain the same.

Method used

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  • Structure for ensuring coaxiality of assembled lens cones
  • Structure for ensuring coaxiality of assembled lens cones
  • Structure for ensuring coaxiality of assembled lens cones

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0021] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0022] As shown in the figure, a structure to ensure the coaxiality of the lens barrel after assembly includes a front lens barrel 1 and a rear lens barrel 2 . The joints of the front lens barrel 1 and the rear lens barrel 2 are provided with threads 3 and connected by threads to make the two lens barrels connected and fixed, wherein the threads of the front lens barrel 1 are internal threads, and the threads of the rear lens barrel 2 are external threads .

[0023] A front convex ring platform 11 is provided on the threaded front end of the front lens barrel 1 , and a rear convex ring platform 21 that can be closely attached to by the front convex ring platform 11 is provided at the thread end of the rear lens barrel 2 . Such as figure 1 , 4 As shown, when the two threads are tightened, the two platforms are pressed against each other. Both the front convex...

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PUM

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Abstract

The invention discloses a structure for ensuring the coaxiality of lens cones after being assembled. The structure comprises a front lens cone and a rear lens cone, wherein threads are arranged at the connection parts of the front lens cone and the rear lens cone and the front lens cone and the rear lens cone are in threaded connection; a front bulge loop platform is arranged at the threaded front end face of the front lens cone; and a rear bulge loop platform to which the front bulge loop platform is tightly adhered is arranged at the threaded rear end of the rear lens cone. The structure for ensuring the coaxiality of the assembled lens cones provided by the invention has the advantages of simple structure, low cost, improved production efficiency, and obvious effect in improving the coaxiality.

Description

【Technical field】 [0001] The invention relates to a structure used on an optical lens barrel to ensure the coaxiality of the lens barrel after assembly. 【Background technique】 [0002] In the design of the optical lens barrel structure, in order to facilitate the mold opening of the lens barrel and ensure that the key dimensions are easy to correct after mold opening, reduce the cost of mold repair, ensure the parallelism and coaxiality of the lens barrel after assembly, and facilitate the assembly of the lens, Usually, the lens barrel is designed into multiple groups, and after the lenses of each group are assembled, they are assembled into a whole, that is, the lens. [0003] Considering the convenience of group assembly, improving the straight line rate of group assembly and meeting the precision requirements of group assembly, the connection method of the group is designed to be threaded. Due to the sensitivity of the optical lens to the coaxiality and the existence of ...

Claims

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Application Information

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IPC IPC(8): G02B7/02
Inventor 晏正涛朱军彦
Owner ZHONGSHAN ZHONGYING OPTICAL
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