Results 231 to 240 of about 3,607,382 (286)

Optical quality of Fresnel-structured hyperopic implantable collamer lenses: A ray-tracing analysis. [PDF]

PLoS One
Shimizu K, Kawamorita T.
europepmc   +1 more source

Spectral Stray Light Effect on High-Temperature Measurements Using a Near-Infrared Multi-Wavelength Pyrometer

Infrared Physics and Technology, 2014
The spectral stray light is a major, non-negligible error source affecting spectral intensity measurements for optical instruments. The purpose of this study is to investigate the effects of spectral stray light on high-temperature measurements using a ...
Tairan Fu, Jiangfan Liu
exaly   +2 more sources

Stray Light Suppression in Spectroscopy Using Periodic Shadowing [PDF]

Optics Express, 2014
It is well known that spectroscopic measurements suffer from an interference known as stray light, causing spectral distortion that reduces measurement accuracy. In severe situations, stray light may even obscure the existence of spectral lines.
Jiajian Zhu, Elias Kristensson, Andreas Ehn   +2 more
exaly   +2 more sources

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Stray Light of Spectacle Lenses Compared with Stray Light in the Eye

Optometry and Vision Science, 2003
Stray light in spectacle lenses may affect the overall vision. It may also affect the measurement of ocular stray light, contrast sensitivity, or glare sensitivity. This article describes common stray light characteristics for glass and plastic spectacle lenses and compares this to the ...
Gerard C, De Wit, Joris E, Coppens
openaire   +2 more sources

Clinical Assessment of Intraocular Stray Light

Applied Optics, 1992
A device that measures intraocular stray light for clinical use in, e.g., cataract evaluation by using the psychophysical direct compensation approach is described and evaluated.
T J van den Berg
exaly   +3 more sources

Sources of Entoptic Stray Light*

Journal of the Optical Society of America, 1958
A technique is described for photographing the light scattered from the various ocular media. The results indicate that about seventy percent of scattered light stems from the cornea, the remainder from the lens.
D W, DeMOTT, R M, BOYNTON
openaire   +2 more sources

Stray Light in Absorption Spectrophotometry. III. A Survey of Methods for Evaluating Stray Light Levels and Stray Light Corrections

Applied Spectroscopy, 1971
An experimental survey of the estimation of stray light levels and corrections has been carried out. The performance of methods requiring no special instrumentation has been evaluated and compared. A new method, as convenient as the currently used filters method and capable of yielding better results especially when large stray light corrections are ...
C. Miranda, P. Conte
openaire   +1 more source

Dynamic range and stray light

Documenta Ophthalmologica, 1980
The role of intraocular stray light upon contrast threshold of two skilled human observers was studied by perimetric methods using the automatic perimeter Octopus. Stray light falsifies the contrast sensitivity profile of the blind spot when a critical test stimulus luminance, which differs for various targets, is exceeded.
F, Fankhauser, H, Haeberlin
openaire   +2 more sources

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