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Fixing method of hard tube endoscope objective lens

A fixing method and endoscope technology, applied in the field of endoscopes, can solve the problems of difficult adjustment and low positioning accuracy, and achieve the effects of improving sealing and waterproof characteristics, increasing contact area, and ensuring image quality

Active Publication Date: 2016-01-20
THE 3RD ACAD 8358TH RES INST OF CASC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved in the present invention is: the first negative group plano-concave lens 1 of the objective lens, the steering prism 2 and the third group plano-convex lens 3 of the objective lens in the prior art rigid tube endoscope fixing method are independent of each other, and the positioning accuracy is low. difficult to adjust

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  • Fixing method of hard tube endoscope objective lens
  • Fixing method of hard tube endoscope objective lens
  • Fixing method of hard tube endoscope objective lens

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Embodiment Construction

[0031] The method for fixing the objective lens of the rigid tube endoscope of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] step 1

[0033] Such as image 3 As shown, the planes of the steering prism and the third group of plano-convex lenses of the objective lens are first glued together, and the position of the prism can be precisely adjusted during the glueing to ensure the positional accuracy between the two. It is preferable to use a precision goniometer to detect the positional accuracy of the prism for precise calibration.

[0034] step 2

[0035] Such as Figure 4 As shown, the first negative group plano-concave lens of the objective lens moves along the slope of the steering prism, and an adjustment gap is left between the first negative group plano-concave lens of the objective lens and the third group of plano-convex lenses to ensure that the relative position between the two can b...

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Abstract

The invention belongs to the technical field of endoscopes, and in particular relates to a method for fixing an objective lens of a rigid tube endoscope. In the method of the present invention, the first negative group plano-concave lens of the objective lens, the steering prism, and the third group of plano-convex lenses of the objective lens are glued into one component by optical glue, and the optical goniometer can be used for precise adjustment of the component when glued. The method of the invention solves the technical problems of low positioning accuracy and high difficulty in adjustment of the rigid tube endoscope fixing method in the prior art, and achieves the beneficial effects of high positioning accuracy, low adjustment difficulty, and good sealing and waterproof characteristics.

Description

technical field [0001] The invention belongs to the technical field of endoscopes, and in particular relates to a method for fixing an objective lens of a rigid tube endoscope. Background technique [0002] According to the position of the observed object when using the rigid tube endoscope, it is necessary to use a prism to change the viewing angle. 65°~75° viewing angle prism usually adopts half pentagonal structure, figure 1 Shown is a schematic diagram of the optical system of the endoscope objective lens with a large viewing angle: it includes the first negative group plano-concave lens 1 of the objective lens, the steering prism 2 and the subsequent positive lens; the subsequent positive lens includes the third group plano-convex lens 3 and the endoscopic Mirror Objective Other Optical Elements 6, 7, 8. According to the position of the observed object when using the rigid tube endoscope, it is necessary to use a prism to change the viewing angle. [0003] The tradit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/02G02B7/18G02B23/24
Inventor 杜吉孟军合于双双索继元
Owner THE 3RD ACAD 8358TH RES INST OF CASC