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A precision optical-mechanical assembly method for a trapezoidal prism optical system

A trapezoidal prism and optical system technology, applied in optics, optical components, installation, etc., can solve the problems of low assembly accuracy and failure to meet the high-precision assembly requirements of the trapezoidal prism optical path, and achieve the effect of ensuring coaxiality

Active Publication Date: 2021-08-17
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problem that the existing mechanical assembly accuracy is low and cannot meet the high-precision assembly requirements of the optical path of the trapezoidal prism, the invention provides a precision optical-mechanical assembly method for the optical system of the trapezoidal prism

Method used

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  • A precision optical-mechanical assembly method for a trapezoidal prism optical system
  • A precision optical-mechanical assembly method for a trapezoidal prism optical system
  • A precision optical-mechanical assembly method for a trapezoidal prism optical system

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Embodiment 1

[0091] Such as figure 2 and image 3 As shown, a trapezoidal prism optical system includes a base plate 1, a bracket 2, a long barrel 7, a first front-end optical assembly 3, a second front-end optical assembly 4, a trapezoidal prism 5, and a rear-end optical assembly 6; the first front-end optical assembly Assembly 3 includes a first lens barrel 31 and a first front lens group 32, a second front optical assembly 4 includes a second lens barrel 41 and a second front lens group 42, and a rear optical assembly 6 includes a third lens barrel 61 and a rear Optical lens group 62, the long lens barrel 7 is installed on the bracket 2 by screws, the first lens barrel 31 is assembled inside the long lens barrel 7; the second lens barrel 41 is installed on the bracket 2; the bottom plate 1 provides bottom mounting for all structures benchmark. In this embodiment, the cooperation between the first front-end lens group 32 and the first lens barrel 31, between the second front-end lens ...

Embodiment 2

[0123] The difference from Embodiment 1 is that before the trapezoidal prism optical system is assembled, the first front end lens group 32 is not installed on the first lens barrel 31, the second front end lens group 42 is not installed on the second lens barrel 41, and the rear end lens group 42 is not installed on the second lens barrel 41. The third lens barrel 61 is not installed in the optical lens group 62, then the precision optomechanical assembly method of the trapezoidal prism optical system:

[0124] In step 1.2), before the first tool reticle 81 is loaded into the first lens barrel 31, the first front-end lens group 32 does not need to be removed;

[0125] In step 2.2), before the second tooling reticle 82 is loaded into the second lens barrel 41, it is not necessary to dismantle the second front end lens group 42;

[0126] In step 5.3), before the third tool reticle 83 is loaded into the third lens barrel 61 , the rear optical lens group 62 does not need to be di...

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Abstract

The invention provides a precise optical-mechanical assembly method of the trapezoidal prism optical system, which solves the problem that the existing mechanical assembly precision is low and cannot meet the high-precision assembly requirements of the trapezoidal prism optical path. The method comprises the following steps: 1) loading the first tooling reticle in the first lens barrel, and using the optical axis of the small circle in the center of the first tooling reticle as the main reference for assembly; 2) utilizing the autocollimation theodolite to adjust The installation attitude of the second lens barrel on the support; 3) move the self-collimating theodolite to the outgoing light path of the trapezoidal prism, adjust the attitude of the self-collimating theodolite; 4) assemble the first front-end mirror into the first lens barrel, The second front end mirror is assembled in the second lens barrel; 5) adjust the translation amount of the trapezoidal prism on the base plate and the spacer between the third lens barrel and the trapezoidal prism until the third frock reticle on the third lens barrel automatically Both the collimation image and the central crosshair image are aligned with the center of the eyepiece of the autocollimation theodolite; 6) Assemble the rear optical mirror into the third lens barrel.

Description

technical field [0001] The invention belongs to the field of precision optical mechanical assembly, and relates to a trapezoidal prism assembly technology, in particular to a precision optical-mechanical assembly method for a trapezoidal prism optical system. Background technique [0002] Trapezoidal prism refracting the optical path is a typical optical structure, and its purpose is to refract the optical path multiple times and reduce the overall size of the optical-mechanical system. Compared with non-refracting optical systems, trapezoidal prism refracting optical path has higher requirements for optical machine assembly. [0003] Such as figure 1 As shown, a typical trapezoidal prism optical system, the incident light 01 first passes through the front-end optical system 02, is reflected twice by the trapezoidal prism 03, and then exits through the rear-end optical system 04. The first front-end optical assembly 021 and the second front-end optical assembly 022. In or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/18G02B27/62
CPCG02B7/1805G02B27/62
Inventor 雷昱康世发秦星何磊李硕
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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