Microcrystalline low-temperature lens and camera using same

A low-temperature, microcrystalline technology, applied in the field of low-temperature lenses, can solve problems such as inability to completely eliminate, and achieve the effect of simple and practical system design, avoidance of changes, and simple working principle

Active Publication Date: 2012-03-21
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above adiabatic technology can only reduce the influence of temperature change on image quality to a certain extent in project implementation, but cannot completely eliminate

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
  • Microcrystalline low-temperature lens and camera using same
  • Microcrystalline low-temperature lens and camera using same
  • Microcrystalline low-temperature lens and camera using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0034] Working band B1 of full microcrystalline lens: 5.0~7.6μm, B2: 8.2~12.0μm, entrance pupil diameter: 300mm, F number 1.5, effective field of view is 4°; detector B1 spectrum and B2 spectrum pixel The size is 30μm area array CCD. The primary mirror / fourth mirror (1) is a concave hyperboloid mirror, the secondary mirror (3) is a convex hyperboloid mirror, and the third mirror (4) is a convex spherical mirror.

[0035] The working environment temperature for processing, assembly and testing is 293K, and the working environment temperature is 120K.

[0036] In this embodiment, when the temperature is lowered from 293K to 120K, the deformation of each mirror surface of the full microcrystalline cryogenic lens is as follows: Figure 2a-2d As shown, the deformation of each mirror is symmetrical.

[0037] In this embodiment, under the working conditions of 293K and 120K, the energy concentration of the pixel in the B1 and B2 bands of the full microcrystalline cryogenic lens is ...

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 provides a microcrystalline low-temperature lens and a camera using the same. The microcrystalline low-temperature lens comprises a primary mirror / fourth mirror (1), a primary mirror and secondary mirror connecting structural member (2), a secondary mirror (3), a third mirror (4), a third mirror and fourth mirror connecting structural member (5), a third mirror and image surface component connecting structural member (6), a color separation film (7) and a receiving image surface (8), wherein, the primary mirror / fourth mirror (1), the primary mirror and secondary mirror connecting structural member (2), the secondary mirror (3), the third mirror (4), the third mirror and fourth mirror connecting structural member (5) and the third mirror and image surface component connectingstructural member (6) are made from the same microcrystalline material. By adopting the microcrystalline low-temperature lens, the camera can be machined, installed, debugged and tested at normal temperature and then can perform imaging work at low temperature.

Description

technical field [0001] The invention relates to a camera used in the temperature range of 0K-293K, in particular to a low-temperature lens. Background technique [0002] The unique advantages of infrared technology make infrared optical systems widely used in the fields of space remote sensing and national defense. Using the infrared spectrum to detect weak targets is an important branch of infrared technology applications, such as infrared astronomical observation. In the observation of such weak infrared targets, in order to reduce the influence of the thermal radiation of the optical-mechanical system itself on the detection capability, it is generally necessary to cool down the temperature of the optical system itself, that is, it is necessary to use a low-temperature lens to meet such detection requirements. [0003] For cryogenic lenses, the lens needs to be processed, assembled and tested under normal temperature conditions, and then work under low temperature conditi...

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 Applications(China)
IPC IPC(8): G02B13/14G02B13/00G02B1/02G02B17/06G03B17/12H04N5/372
Inventor 周峰苏云汤天瑾马军行麦玲张寅生张涛
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap