Results 31 to 40 of about 3,607,382 (286)

Stray light analysis of multi-spectral optical filters

open access: yes, 2022
S.199-215Multi-spectral optical filters are an essential component for spaceborne optical imaging. The performance of a multi-spectral camera mainly depends on the performance of its optical system. Performance criteria not only involve the resolution of
Merschdorf, Matthias   +2 more
core   +1 more source

A note on stray light in the Tubingen perimeter. [PDF]

open access: yesBritish Journal of Ophthalmology, 1977
Measurements were made of the relative intensity of light scattered in the neighbourhood of the large and small targets on the Tübingen perimeter. Two target intensities were studied. The scattered light fraction ranged from 0-1 to 25% and its effect was detected more readily by young than by older observers.
R A, Weale, C, Wheeler
openaire   +2 more sources

Implication of Illumination Beam Geometry on Stray Light and Bandpass Characteristics of Diode Array Spectrometer

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2018
This paper describes spectral stray light measurements of diode array spectrometers and, in particular, the dependence of stray light and bandpass properties on the illumination beam geometry. The effects of underfilling and overfilling the nominal field
Joel Kuusk   +4 more
doaj   +1 more source

Fiber-based stray light suppression in spectroscopy using periodic shadowing [PDF]

open access: yes, 2021
Stray light is a known strong interference in spectroscopic measurements. Photons from high-intensity signals that are scattered inside the spectrometer, or photons that enter the detector through unintended ways, will be added to the spectrum as an ...
Kim, Haisol   +33 more
core   +1 more source

A calibration procedure which accounts for non-linearity in single-monochromator Brewer ozone spectrophotometer measurements [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
It is now known that single-monochromator Brewer spectrophotometer ozone and sulfur dioxide measurements suffer from non-linearity at large ozone slant column amounts due to the presence of instrumental stray light caused by scattering within the optics ...
Z. Vaziri Zanjani   +4 more
doaj   +1 more source

Stray Light Suppression Design and Test for the Jilin-1 GF04A Satellite Remote Sensing Camera

open access: yesRemote Sensing
The stray light suppression design aims to reduce the impact of stray light on optical systems. For high-resolution optical remote sensing systems, practical tests of stray light suppression performance are essential to ensure optimal functionality ...
Xing Zhong   +5 more
doaj   +1 more source

The effect of instrumental stray light on Brewer and Dobson total ozone measurements [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Dobson and Brewer spectrophotometers are the primary, standard instruments for ground-based ozone measurements under the World Meteorological Organization's (WMO) Global Atmosphere Watch program.
O. Moeini   +8 more
doaj   +1 more source

Design of a large field-of-view two-dimensional geometrical waveguide

open access: yesResults in Optics, 2021
Geometrical waveguide has great advantages over conventional imaging systems, like larger field of view, larger exit pupil area, lower thickness and lighter weight.
Yao Zhou, Jufan Zhang, Fengzhou Fang
doaj   +1 more source

A Stray Light Detection Model for VR Head-Mounted Display Based on Visual Perception

open access: yesApplied Sciences, 2022
In recent years, the general public and the technology industry have favored stereoscopic vision, immersive experience, and real-time visual information reception of virtual reality (VR) and augmented reality (AR).
Hung-Chung Li   +2 more
doaj   +1 more source

Effect of Grating Ruling Machine System Errors on Grating Spectral Performance

open access: yesApplied Sciences, 2022
Grating groove functions scalar theory can describe the light source through the grating interference and diffraction effect of the physical phenomenon of splitting light.
Chao Yang, Xu Chen
doaj   +1 more source

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