Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for manufacturing a telephoto off-axis paraboloid with a large off-axis amount

An off-axis parabola and manufacturing method technology, which is applied in the field of optics, can solve the problems of low detection accuracy and poor processing accuracy of off-axis paraboloids with a large off-axis amount in telephoto

Active Publication Date: 2020-09-11
苏州如期光电科技有限公司
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the technical problem of poor machining accuracy caused by the low detection accuracy of the off-axis parabola with a large off-axis amount of the telephoto, and the technical solution adopted is as follows:

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
  • A method for manufacturing a telephoto off-axis paraboloid with a large off-axis amount
  • A method for manufacturing a telephoto off-axis paraboloid with a large off-axis amount
  • A method for manufacturing a telephoto off-axis paraboloid with a large off-axis amount

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Taking an off-axis parabolic mirror with a diameter of D1=Ф400mm, a thickness of 60mm, a back focal length of f=18m, and an off-axis distance of H=9m as an example, a detection optical path of a long-focus off-axis paraboloid with a large off-axis distance, such as Image 6 As shown, along the propagation direction of the light waves emitted by the interferometer 5 are arranged in sequence: a diverging lens 8, a standard spherical reflector 6, and a standard plane reflector 7. The divergent lens modulates the light waves emitted by the interferometer into a divergent spherical surface The divergent spherical wave is reflected by the standard spherical mirror and incident on the measured telephoto large off-axis paraboloid 1, and the light wave reflected by the measured telephoto large off-axis paraboloid is a plane wave, and the plane wave is vertical Return to the original path after incident on the standard plane mirror;

[0035] The standard spherical reflector and t...

Embodiment 2

[0041] combined with figure 1 , taking an off-axis parabolic reflector with a processing diameter of D1=Ф400mm, a thickness of 60mm, a back focal length of f=18m, and an off-axis amount of H=9m as an example, a manufacturing method of a telephoto off-axis paraboloid with a large off-axis amount:

[0042] Step 1: Design the off-axis two-mirror inspection system according to the parameters of the off-axis parabolic mirror, and use the ZEMAX program to optimize the design and obtain the optical path diagram as follows Figure 7 , it can be seen from the figure that the deflection angle θ1=14.9575°, the deflection angle θ2=-10.334°, the radius of the standard spherical mirror is R2=21650±300mm, the distance between the two mirrors is about d1=2500mm, the standard spherical mirror The image point distance from the center of the reflector to the two mirror systems is about d2=7500mm, the diameter of the standard spherical reflector is D2=Ф385mm, and the system image square F / # is F / ...

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 the optical processing, and specifically relates to a manufacturing method of an off-axis paraboloid. For solving the technical problem that the processing precision is bad since the off-axis paraboloid with long focus and large off-axis magnitude is low in detection precision, the invention provides a manufacturing method of the off-axis paraboloidwith long focus and large off-axis magnitude. The manufacturing method comprises the following steps: superposing divergent lens virtual focuses and image points of an off-axis two-mirror system by adopting the off-axis two-mirror system, thereby effectively shortening light path length; and further shortening the light path length and compressing light path width by cooperating with a standard spherical reflector and a standard plane reflector; furthermore, image elements of a CCD are effectively utilized through the technical scheme, the detection resolution of a detected workpiece is increased, and the bad influence on a checking result by the air disturbance can be effectively contained, the interference checking precision is improved, and the guarantee for processing the off-axis mirror meeting the technical requirement is provided.

Description

technical field [0001] The invention belongs to the field of optical technology, and in particular relates to a method for manufacturing an off-axis paraboloid. Background technique [0002] Due to the loss of rotational symmetry, the off-axis parabolic mirror cannot be processed and ground on the mirror grinding machine according to the traditional method. It is generally believed that if high-precision single-piece machining of off-axis parabolic mirrors is desired, only computer-aided machining methods can be used. That is, it must rely on complex numerical control optical processing equipment. Nowadays, the digging and cutting technology is generally adopted. First, a large rotationally symmetrical parent parabolic mirror is made, and then the required part is dug out with a set cutting tool. This method can only be applied to mirrors with small aperture and small off-axis. [0003] Off-axis parabolic mirrors mainly have the following indicators: clear aperture, off-a...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/02G01B11/26G01B11/27G01B11/255G01B11/00
CPCG01B11/002G01B11/02G01B11/255G01B11/26G01B11/272
Inventor 胡建军潘君骅钱煜王伟
Owner 苏州如期光电科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com