A four-quadrant tilt tracking sensor capable of self-adaptive correction of adjustment errors
A four-quadrant detector and four-quadrant technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems that it is difficult to achieve sub-micron assembly accuracy, and achieve easy transformation and upgrading, simple structure, improved sensitivity and dynamic range Effect
Active Publication Date: 2016-04-27
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0017] However, the current machining process standards are difficult to achieve sub-micron assembly accuracy. It is necessary to find a calibration method to locate the centroid of the spot formed by the standard plane wave through the imaging lens to the origin of the four-quadrant detector, and eliminate the four-quadrant tilt tracking sensor. Adjustment error, improve the sensitivity and dynamic range of the system, and meet the requirements of the tilt tracking system for the four-quadrant tilt tracking sensor
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0036] The present invention proposes such as figure 1 A four-quadrant tilt tracking sensor that can self-adaptively correct installation and adjustment errors is shown. On the basis of the traditional four-quadrant tilt tracking sensor, a wavefront tilt corrector 1 and a self-calibration processor 5 are added. The working process is divided into The following two steps:
[0037] 1. Calibration steps:
[0038] Input the standard plane wave 6 before the wavefront tilt corrector 1, due to the existence of the installation error, the center of mass of the light spot formed at the four-quadrant detector 3 after the standard plane wave 6 passes through the imaging lens 2 will deviate from the origin of the four-quadrant detector 3, Such as image 3 As shown on the left, the output signals of each quadrant of the four-quadrant detector 3 are as foll...
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
Login to View More Abstract
The invention provides a four-quadrant tilt tracking sensor capable of correcting an alignment error self-adaptively. The four-quadrant tilt tracking sensor comprises a wavefront tilt corrector, an imaging lens, a four-quadrant detector, a slope calculator and a self-correction processor, and is characterized in that the wavefront tilt corrector and the self-correction processor are added to the conventional four-quadrant tilt tracking sensor, the assembling error of the four-quadrant tilt tracking sensor is corrected by closed-loop operation of a self-correction loop, the output voltage of the self-correction processor is kept unchanged, finally, a wavefront to be measured is input in front of the wavefront tilt corrector and the overall slope of the wavefront to be measured is measured through the four-quadrant detector and the slope calculator. By the four-quadrant tilt tracking sensor capable of correcting the alignment error self-adaptively, the assembling error of the conventional four-quadrant tilt tracking sensor can be corrected, and conditions are provided for precisely measuring the overall slope of the wavefront to be measured by the four-quadrant tilt tracking sensor.
Description
technical field [0001] The invention relates to a four-quadrant inclination tracking sensor, in particular to a four-quadrant inclination tracking sensor capable of self-adaptive correction of adjustment errors. Background technique [0002] Astronomical telescopes are an important means of observing celestial bodies. Without the birth and development of astronomical telescopes, there would be no modern astronomy. At present, with the improvement and improvement of the performance of astronomical telescopes in all aspects, astronomy is also undergoing a huge leap, rapidly advancing human understanding of the universe, thereby helping human understanding of themselves and society. [0003] Because the plane wave emitted by the celestial body needs to pass through the 20-kilometer atmospheric turbulent layer, a random channel, before it can be received by the telescope. The instability of the atmospheric turbulence in time and space will cause the plane wave to be distorted, r...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01J9/00
Inventor 马晓燠饶长辉鲜浩魏凯田雨
Owner INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI