Device for testing absolute spectrum transmittance and uniformity thereof of off-axis multi-lens space camera

A technology of spectral transmittance and space camera, which is applied in the field of absolute spectral transmittance and its uniformity testing device of off-axis multi-mirror space cameras, can solve the problem of inability to test the transmittance, and achieve the effect of accurate test data

Inactive Publication Date: 2015-05-06
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing off-axis multi-reflection space camera only tests the average transmittance of a wide band, or tests the transmittance at a single wavelength position, it cannot test t...

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
  • Device for testing absolute spectrum transmittance and uniformity thereof of off-axis multi-lens space camera
  • Device for testing absolute spectrum transmittance and uniformity thereof of off-axis multi-lens space camera
  • Device for testing absolute spectrum transmittance and uniformity thereof of off-axis multi-lens space camera

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Such as figure 1 As shown, the full-band collimated radiation illumination source, the integrating sphere light source 1 is a light source composed of multiple LEDs, which emits visible / near-infrared light in the solar spectrum with a color temperature of 6000K, and the inner surface of the integrating sphere is coated with high reflectivity layer. An adjustable light bar 2 is installed at the position of the light exit of the integrating sphere light source 1 for adjusting the spot size of the light exit of the integrating sphere. 3 is a collimator, the position of its focal plane is the center position of the light outlet of the integrating sphere. An exit spot adjuster 4 is placed at the position of the light exit of the collimator to adjust the exit spot diameter of the full-band collimated radiation illumination source. The divergence angle of the collimator 3 can be adjusted by adjusting the adjustable dimmer 2 of the light outlet of the integrating sphere. Con...

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 device for testing absolute spectrum transmittance and uniformity thereof of an off-axis multi-lens space camera, belongs to the field of space optics, and aims at solving the problem of the off-axis multi-lens space camera that only the average transmission in a broadband is tested, or the transmission at some single wavelength position is tested, and the transmission of each wavelength position in the whole band cannot be tested. The device is characterized in that an all-band collimated radiating lighting source is fixed on a precise moving guide rail; the radiating light emitted by the all-band collimated radiating lighting source can be adjusted to be parallel to an optical axis of an optical system of the off-axis multi-lens space camera and then is imaged on a focus plane after passing through the optical system; an absolute spectrum radiation receiver is fixed the precise moving guide rail; an light inlet of the absolute spectrum radiation receiver can be adjusted to be reach the focus plane; a main control computer sends a control instruction to a controller, the controller controls the precise guide rail to drive the all-band collimated radiating lighting source to move, and the precise guide rail drives the absolute spectrum radiation receiver to move, so as to test the spectrum radiation quantity at different positions in the length direction of the focus plane.

Description

technical field [0001] The invention belongs to the field of space optics, and in particular relates to an off-axis multi-reflection space camera absolute spectral transmittance and a uniformity testing device. Background technique [0002] Transmittance is one of the important technical indicators of space cameras. The space camera adopts an off-axis multi-reflective optical system with a long focal plane to achieve a large field of view and wide coverage. With the development of space camera technology and multispectral and hyperspectral technology, the absolute spectral transmittance of space cameras has been paid more and more attention, and the absolute spectral transmittance has a direct impact on the imaging performance of space cameras. The main mirror of the off-axis multi-mirror optical system of the space camera is relatively long, generally greater than 800mm, and the length of the focal plane is generally greater than 300mm. Therefore, after the assembly of th...

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): H04N17/00G01M11/02
Inventor 李宪圣任建伟万志刘则询李葆勇孙景旭刘洪兴
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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