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Pendulum sweeping and in-flight calibration assembly for double spectrum imagers

A spectral imager and imager technology, applied in the direction of spectrometry/spectrophotometry/monochromator, instrument, scientific instrument, etc., can solve the problem of synchronous swinging and sweeping of swinging mirrors, and achieve synchronization and compact structure , easy to adjust the effect

Active Publication Date: 2017-06-13
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Description
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  • Application Information

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Problems solved by technology

[0003] In order to meet the needs of on-board calibration and to solve the problem of synchronous swinging of the swinging mirror in the dual-spectrum imaging system on the star, this invention proposes a component for realizing the high-precision synchronous swinging and on-orbit calibration functions of two spectral imagers

Method used

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  • Pendulum sweeping and in-flight calibration assembly for double spectrum imagers
  • Pendulum sweeping and in-flight calibration assembly for double spectrum imagers
  • Pendulum sweeping and in-flight calibration assembly for double spectrum imagers

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Embodiment Construction

[0017] The invention is mainly composed of two swing mirrors and a calibration mirror.

[0018] Such as figure 1 As shown, the first oscillating mirror 1 and the second oscillating mirror 3 are designed in a 90° V shape, the oscillating mirror can be a metal reflector or a glass reflector, the normal line is perpendicular to the rotation axis 4, and the exit optical axis 5 of the oscillating mirror corresponds to spectral imaging The incident optical axis of the instrument, the swing mirror reflects the light from the ground objects to the two spectral imager systems respectively. The size of the swing mirror can be 143mm*50mm, and the thickness is 25mm.

[0019] The calibration reflector 2 is located on the back of the two swing mirrors, which can be a metal reflector or a glass reflector, and its normal line forms an angle of 45 degrees with the rotation axis. Size can be Φ88mm, thickness 10mm.

[0020] The two oscillating mirrors and the calibration mirror are fixed toge...

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Abstract

The invention discloses a pendulum sweeping and in-flight calibration assembly for double spectrum imagers. The assembly comprises two reflection pendulum mirrors which are arranged in a V shape and an aslant arranged calibration reflection mirror, the relative location between the two pendulum mirrors and the reflection mirror is fixed, and the two pendulum mirrors and the reflection mirror can rotate at plus or minus 90 degrees along a rotary shaft and are used for achieving a high-precision synchronous pendulum sweeping and in-flight calibration function of the double spectrum imagers. The pendulum sweeping and in-flight calibration assembly for the double spectrum imagers is compact in structure and easy to install and adjust because only one motion component is needed, and meets the requirements for weight, volume and reliability of board equipment well.

Description

technical field [0001] The invention belongs to the field of space-borne spectral imagers, and relates to a component for realizing the functions of high-precision synchronous sweeping and on-orbit calibration of two spectral imagers. Background technique [0002] The spectral imager can acquire two-dimensional space and one-dimensional spectral information at the same time. The rich data is conducive to the fine classification and identification of targets, and has important applications in space remote sensing. However, the field of view of the spectral imager is limited. For large-scale remote sensing requirements, a front-mounted mirror is usually required to increase the observation range and improve observation flexibility. In addition, due to the limitation of the spectral response of the detector, in order to realize the observation of the main spectral reflection band of the sun, the current space-borne spectral imager is mostly a dual-system design of a visible lig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/427G01J3/28G01J3/02G01J3/06
CPCG01J3/0297G01J3/06G01J3/2823G01J3/427G01J2003/064G01J2003/2826
Inventor 李立波王爽邹纯博刘学斌孙剑赵强李娟
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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