All-aluminum low-temperature total reflection lens
A total reflection and low temperature technology, applied in installation, optics, instruments, etc., can solve problems such as optical performance degradation and image quality degradation, and achieve the effect of simple and flexible installation and adjustment work
Active Publication Date: 2013-05-01
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 invention solves the problem of image quality reduction in low-temperature optics due to the difference between the environment during processing and adjustment and the environment during work and use, and avoids the inconsistency of the linear expansion coefficients of the optical system and the supporting frame when the temperature changes The decrease in optical performance such as the distance between the mirrors
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
[0028] The main function of the optical system is to receive parallel light and image the scene within the range of 2°×2° in the spatial direction. The specific implementation method is: the optical system is a total reflection type and is composed of four-sided mirrors. Wherein the primary mirror 1 is a concave hyperboloid mirror, the secondary mirror 2 is a convex hyperboloid mirror, the third mirror 3 is a convex spherical mirror, and the fourth mirror 4 is a concave spherical mirror. The entrance pupil diameter is Φ300mm, F# is 1.5, and the working spectrum ranges from 5.5μm to 7.5μm and 8μm to 12μm. Due to the needs of optical design, the main mirror 1 and Sijing 4 are processed as one.
[0029] The main function of the frame structure is to support the lenses in the optical system so that the distance between the primary mirror 1 and the secondary mirror 2 is 94.5mm±0.03mm and the distance between the third mirror 3 and the fourth mirror 4 is 129.1 mm. mm±0.08mm, so th...
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 discloses an all-aluminum low-temperature total reflection lens which comprises an optical system and a support framework for supporting and connecting with the optical system. The optical system and the support framework are made of an aluminum alloy material, wherein the optical system comprises a primary mirror (1), a secondary mirror (2), a third mirror (3) and a fourth mirror (4), which are designed to be total reflection lenses respectively. By using the all-aluminum low-temperature total reflection lens, the problem that picture elements are reduced in cryogenic optics because an environment for processing and debugging and the environment for working and use are different is solved and declining of the spacing intervals between the mirrors and other optical performances caused by inconsistent material linear expansibilities of the optical system and the support framework when the temperature changes is further prevented.
Description
technical field [0001] The invention relates to an all-aluminum low-temperature total reflection lens. Background technique [0002] In the low-temperature background of deep space, when the target signal to be detected is very weak, the thermal radiation generated by the optical system and optical-mechanical structure at room temperature in the detection system will become the main source of the background radiation of the detector. The background radiation of the detector seriously affects the sensitivity of the detector, thereby affecting the detection capability of the camera system. Only by cooling the optical system and optical-mechanical structure to a certain extent can the background radiation be effectively reduced and the detection capability of the system greatly improved. Therefore, space low-temperature optical technology must be used to complete the long-distance detection of weak and small targets. [0003] Cryogenic optical technology is mainly used in dee...
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): G02B7/198
Inventor 王莹刘义良行麦玲王昀苏云汤天瑾周峰
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH