Results 231 to 240 of about 4,019,827 (271)

Stray-Light Suppression in a Reflecting White-Light Coronagraph

Applied Optics, 1993
An analysis of stray-light suppression in the white-light channel of the Ultraviolet Coronagraph Spectrometer experiment for the Solar and Heliospheric Observatory is reported. The white-light channel consists of a reflecting telescope with external and internal occultation and a polarimeter section.
Marco Romoli, H Weiser, L D Gardner
exaly   +4 more sources

57.6: Stray Light Suppression for a Dual Depth HUD System

Digest of Technical Papers SID International Symposium, 2019
The stray light of a dual depth windshield type HUD prototype was analyzed from two aspects: the imaging quality and the heat received by the PGUs from the sun. The primary path of the stray light was found using the ray path function of Lighttools program, and stray light suppression design was performed based on the analysis results.
Sen Ma, Tao Hong, Bingchuan Shi, Dianmeng Li, Naifu Wu, Chunmiao Zhou   +5 more
exaly   +2 more sources

Research on Stray Light Suppression of Space Debris Detection Camera

AOPC 2019: Space Optics, Telescopes, and Instrumentation, 2019
The sources of stray light were briefly introduced and the necessity of stray light suppression was analyzed. Strong stray light often directly affected the performance of space debris detection camera and even invalidated it. Therefore, the application of stray light suppression in space debris detection camera was particularly important.
Meiying Liu, Shangmin Lin, Yaoke Xue
exaly   +2 more sources

Research on stray light suppression of star simulator

AOPC 2020: Optical Sensing and Imaging Technology, 2020
We propose a new optical engine that supresses stray light to address the problems of high stray background light and low star point simulation in traditional star simulators and offer an experimental proof that the new design provides higher contrast.
Linghao Wu, Guoyu Zhang, Gaofei Sun, Shi Liu, Wentao Jia, Peng Lin   +5 more
openaire   +1 more source

Suppression of stray light based on energy information mining

Applied Optics, 2018
The star tracker plays a critical role in precision aerospace missions due to its high accuracy, absolute attitude output, and low power consumption. For an optical sensor, the problem of stray light is always an important research issue. A star energy information mining method for stray light suppression is proposed in this study.
Ting, Sun, Fei, Xing, Jingyu, Bao, Songsong, Ji, Jin, Li   +4 more
openaire   +2 more sources

Examination of suppression of stray light of small PM2.5 sensor

2017 IEEE International Conference on Consumer Electronics (ICCE), 2017
We develop a light-scattering-type PM2.5 sensor that can measure PM2.5 particulate matter with high precision while suppressing the stray light generated in the sensor. We devised a light absorption unit with an inclined photodetector for auto power control.
Shota Nakahara, Satoru Okagaki, Kenya Nakai, Nozomi Enoki, Nobuo Takeshita   +4 more
openaire   +1 more source

Study on the Stray Light Suppression of Fundus Camera

Applied Mechanics and Materials, 2012
Fundus camera is a system that is a kind of observation and records the images of the retina of the eye. Through these retinal images, it can diagnosis Systemic diseases early, but Stray light will make the images blur and contrast reduction, reduce the ratio of Signal to noise of the images, affect the fundus camera imaging quality seriously, we must ...
Jing Yi Wang, Yan Wu Chen
openaire   +1 more source

Analysis and Suppression of Passive Chip Stray Light for Integrated Optical Gyroscopes

Optics Communications
Zhizhou Lü, Junbo Feng, Shijia Fan
exaly   +2 more sources

Study on stray light suppression in IRFPA Dewar

SPIE Proceedings, 2012
The method of the stray light suppression in infrared focal plane array dewar is studied. Some purposes and several design principles of baffle vanes in cold shield are presented. Two configurations of cold shield are proposed to reduce the effect of stray light on the basis of the configuration of the original cylindrical cold shield. The effects of
Wang Xia, Wen Sun, Xiaokun Wang, Yanjin Li   +3 more
openaire   +1 more source

Stray Light Control, Evaluation, And Suppression

SPIE Proceedings, 1985
During the past 15 years, the importance of stray light control and its evaluation as an integral part of the design process for imaging systems has emerged. There has been substantial progress in the development of both analytical tools and experimental facilities. The problem has become easier and more difficult depending on the scenario.
openaire   +1 more source