Results 191 to 200 of about 3,452 (235)

Discomfort glare indices: a comparative study

Applied Optics, 1994
From the luminance distribution measured with a stereoluminancemeter we have studied the variation in the principal indices of discomfort glare while considering the orientation of the line of vision of the observer and the limiting luminance of the glare source.
M, Rubiño, A, Cruz, J A, Garcia, E, Hita   +3 more
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Glare Discomfort and Pupil Diameter

Journal of the Optical Society of America, 1956
A limited study has shown that the diameter of the pupil of the eye is not related directly to the sensation of discomfort which results from a bright light source in the field of view. Other factors, especially the illumination received at the eye, govern the pupil diameter.
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Spectral discomfort glare sensitivity investigations

Ophthalmic and Physiological Optics, 2010
The main concern of car headlamp manufacturers is to provide better visibility. Unfortunately, by increasing the luminous intensity of the headlamp, the risk of increasing discomfort glare for the other road users increases. One possibility to increase visibility and decrease glare could be the selection of a spectral power distribution for the ...
Judit, Fekete, Cecilia, Sik-Lányi, János, Schanda   +2 more
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Discomfort glare model for mobile display

2015 IEEE 5th International Conference on Consumer Electronics - Berlin (ICCE-Berlin), 2015
This study proposed a new glare model for mobile display according to contents in low illumination condition. The proposed glare model is considered by stimulus size, contrast ratio, stimulus position, averaging luminance, viewing angle, and the number of stimuli. For the model, two-step subjective experiment was conducted.
Wonhee Choe, Min Woo Lee
openaire   +1 more source

Discomfort Glare and the Lighting of Buildings

Transactions of the Illuminating Engineering Society, 1950
Bright light sources can cause glaring effects which may impair visual efficiency. This may be brought about by a directly disabling effect, or it may result indirectly from irritation and discomfort. The purpose of the work described in the paper was to obtain more detailed knowledge of the effects of glaring light sources on ...
P. Petherbridge, R. G. Hopkinson
openaire   +1 more source

Overhead Glare and Visual Discomfort

Journal of the Illuminating Engineering Society, 2003
(2003). Overhead Glare and Visual Discomfort. Journal of the Illuminating Engineering Society: Vol. 32, No. 1, pp. 73-88.
Peter R. Boyce, Claudia M. Hunter, Carlos Inclan   +2 more
openaire   +1 more source

Discomfort glare measurement

SPIE Proceedings, 2009
In the paper some results of research on discomfort glare measurement are described. The idea of practical realization of this measurement in interiors on the basis of the analysis of the investigated room image is presented. To obtain the necessary geometric quantities the coordinates of proper pixels in the image and some parameters of the imaging ...
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The Pupillary Response and Discomfort Glare

Journal of the Illuminating Engineering Society, 1975
This IERI report is a four-part study on pupillary fluctuations as an index of discomfort glare. Light reduces the size of the pupil, but it is not size alone that generates discomfort. Rather, it is the fluctuation in size. Here, the authors present new studies of the role of the iris in generating what is known as discomfort glare.
Glenn A. Fry, Vincent M. King
openaire   +1 more source

Discomfort Glare: Range Effects

Journal of the Illuminating Engineering Society, 1981
Forty paid observers made adjustments to the borderline between comfort and discomfort (BCD). A random half of the observers adjusted a glare source with a maximum luminance of 300,000 fL, the other half a glare source with a maximum luminance of 30,000 fL. The mean BCD in the first case was 26,900 fL, in the other it was 3,860 fL.
Ashok B. Lulla, Corwin A. Bennett
openaire   +1 more source

A portable discomfort glare evaluator

Lighting Research & Technology, 1980
An inexpensive portable instrument is described for the paired comparison observation of direct discomfort glare in interior lighting installations. It is useful for field tests where it complements glare assessment by verbal statements.
openaire   +1 more source