Optimal Designing of Baffle of Star Sensor

Zhibo, 廖志波 Liao; Ruimin, 伏瑞敏 Fu; Xiaoying, 宗肖颖 Zong

doi:10.3788/cjl20103704.0987

Cited by 7 publications

(2 citation statements)

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“…Through the above analysis, reasonable stray light elimination measures are designed in the structural design of the optical system [12][13][14][15] . Mainly included:1) In order to avoid blocking the imaging light, the baffle of the central hole of the main mirror is designed with a square hole.…”

Section: Stray Light Suppression Measures Optimizedmentioning

confidence: 99%

Analysis and suppression of the impact of stray light on the imaging quality of optical remote sensors

QIN¹,

ZHANG²,

HUANG³

2023

AOPC 2022: Optical Sensing, Imaging, and Display Technology

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The stray light is one of the main factors affecting the imaging quality of optical remote sensor. The design and experimental verification of stray light suppression is also the key link in the design of aerospace optical remote sensor. This article based on the development needs of aerospace cameras in orbit, the stray light suppression analysis and product assurance of imaging remote sensing cameras with RC configuration as the optical system (or main optical system)were studied in a quantitative way. First of all, the stay light characteristics of such cameras were revealed in a quantitative way, the design and addition of the optimal stray light suppression structures were completed, and comprehensive simulation verification was carried out through the light path tracking method. Secondly, in the design stage, in strict accordance with the control requirements of the development of aerospace remote sensing camera, the necessary and reasonable product guarantee control point is set up by PDCA cycle method. Finally, through laboratory stray light qualitative tasting and on-orbit verification, the full-link verification of camera stray light suppression is completed. This paper can provide a reference for stray light suppression design and process quality control of largecaliber optical remote sensors.

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Section: Stray Light Suppression Measures Optimizedmentioning

confidence: 99%

Analysis and suppression of the impact of stray light on the imaging quality of optical remote sensors

QIN¹,

ZHANG²,

HUANG³

2023

AOPC 2022: Optical Sensing, Imaging, and Display Technology

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“…The external hood is the first line of defence against external stray light and is highly effective in suppressing stray light [13] . When designing an external hood, the design principles are: 1) At least once stray light cannot enter the optical system directly.…”

Section: Stray Light Suppressionmentioning

confidence: 99%

Analysis and suppression of stray light in the pre-optical system based on AOTF imaging spectrometer

chang

zhao

Qiu

et al. 2023

Conference on Infrared, Millimeter, Terahertz Waves and Applications (IMT2022)

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During the observation of the ground by the space optical system, stray radiation will enter and degrade the imaging quality of the optical system. In order to improve the imaging effect of the system, this paper takes the front optical system of an AOTF imaging spectrometer as an example, designs and builds a truss optical machine structure in Pro/E, and completes the optical machine modelling in Trace Pro. The stray light paths were analysed by ray tracing simulation and the important surfaces of the optical machine were identified. The design of external hood and light-blocking rings and the design of the light baffle and the alienated inner hood were carried out respectively. Numerical calculations of PST curves for off-axis angles from 5 °to 80 °were carried out for each of the three cases by ray tracing without stray light suppression, using only external hood suppression, and using internal and external suppression measures. After comparative analysis, it was determined that the PST value for the use of all strays light suppression measures at an angle greater than 30°was less than the stray light level target value of 10 -7 by two orders of magnitude and less than the PST of the optical machine without stray light suppression by four orders of magnitude, verifying that the stray light suppression method in the paper works well. INTRODUCTIONStray light refers to non-imaging light other than imaging light, through normal or abnormal methods to the image plane. Space optical systems generally operate in a very complex environment, where radiation sources such

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Space luminous environment adaptability of missile-borne star sensor

Zhao

Wang

et al. 2012

J. Cent. South Univ.

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Optimal Designing of Baffle of Star Sensor

Cited by 7 publications

References 0 publications

Analysis and suppression of the impact of stray light on the imaging quality of optical remote sensors

Analysis and suppression of the impact of stray light on the imaging quality of optical remote sensors

Analysis and suppression of stray light in the pre-optical system based on AOTF imaging spectrometer

Space luminous environment adaptability of missile-borne star sensor

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