Unlock instant, AI-driven research and patent intelligence for your innovation.

High-precision anti-interference large-working distance auto-collimation device and method

A high-precision, working distance technology, applied in measuring devices, using optical devices, measuring angles, etc., to achieve the effects of improving measurement accuracy, reducing impact, and increasing anti-interference ability

Active Publication Date: 2019-04-05
HARBIN INST OF TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the two problems existing in the traditional autocollimator, the present invention discloses a high-precision anti-interference and large working distance autocollimation device and method. Under the measurement, improve the measurement accuracy, anti-interference ability and stability of the laser autocollimator measurement process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-precision anti-interference large-working distance auto-collimation device and method
  • High-precision anti-interference large-working distance auto-collimation device and method
  • High-precision anti-interference large-working distance auto-collimation device and method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0038] This embodiment is an embodiment of a high-precision anti-interference and large working distance self-collimation device.

[0039] The high-precision anti-interference and large working distance self-collimation device of this embodiment, the structural diagram is as follows figure 2 shown. The self-collimation device includes a light source 1, a first polarizer 6, a feedback imaging unit 4, a first transmissive collimator 2, a combined reflector 5, a second polarizing beam splitter 7, an angular drift feedback measurement unit 8, and a wavefront distortion feedback measurement unit 9 .

[0040] The first polarizer 6 and the feedback imaging unit 4 are arranged between the light source 1 and the first transmissive collimator 2 . The feedback imaging unit 4 includes a first feedback beam splitter 41 and a first photoelectric sensor 42 . The first photoelectric sensor 42 is located on the focal plane of the first transmissive collimator 2 , and the optical axis is pe...

specific Embodiment 2

[0056] This embodiment is the second embodiment of the high-precision anti-interference and large working distance self-collimation device.

[0057] The high-precision anti-interference and large working distance self-collimation device of this embodiment, the structural diagram is as follows Figure 4 shown. On the basis of the first embodiment, the second transmissive collimator 82 is removed, and the third transmissive collimator 94 and the second polarizer 95 are added. The optical path structure of the angular drift feedback measurement unit 8 and the wavefront distortion feedback measurement unit 9 is adjusted to reduce the volume of the optical path and optical components, making the overall structure compact and stable, and more portable design advantages.

[0058] The self-collimation device of this embodiment includes a light source 1, a first polarizer 6, a feedback imaging unit 4, a first transmissive collimator mirror 2, a combined reflector 5, a third feedback b...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of precision measurement and the field of optical engineering, and specifically relates to a high-precision anti-interference large-working distance auto-collimation device and method. The device consists of a light source, a first polarizing film, a feedback and imaging unit, a first transmission type collimating lens, a combined reflector, a second polarizing beam splitter, an angle drift value feedback and measurement unit and a wavefront distortion feedback and measurement unit. According to the method, the angle drift value feedback and measurement unit and the wavefront distortion feedback and measurement unit are added to respectively measure and compensate angle drift and wavefront distortion, caused by air disturbance, of auto-collimated light beams, thereby decreasing the influences, caused by air disturbance, of the auto-collimated light beans under complicated air environment and long working distances, and improving the workingdistances, stability and anti-interference ability of auto-collimators; and moreover, the device is capable of mutually separating and respectively measuring the angle drift values and wavefront distortion caused by air disturbance, so as to improve the measurement and compensation precision, so that the device has the advantage of improving the measurement precision of auto-collimators under sameusing environment and distances.

Description

technical field [0001] The invention belongs to the field of precision measurement technology and the field of optical engineering, and specifically relates to a high-precision anti-interference and large working distance self-collimation device and method. Background technique [0002] With the continuous improvement of the level of science and technology, processing and manufacturing presents a trend of high precision and large size, in which precise small-angle measurement is an important part. The instrument commonly used for precise small-angle measurement is a laser autocollimator with the principle of optical self-collimation as the core. important role. [0003] Laser autocollimator has the advantages of high resolution, high precision, long measurement distance, fast measurement speed, non-contact, convenient adjustment and movement, etc., and has a very wide range of applications in the above fields. [0004] In precision and ultra-precise positioning detection, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01C1/00
CPCG01C1/00G01B11/26G02B27/30G02B27/148G02B27/145G02B27/16
Inventor 于洋朱凡谭久彬
Owner HARBIN INST OF TECH