light reflex

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light reflex

n.
Contraction of the pupil of the eye in response to an increase in light.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.light reflex - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smallerlight reflex - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
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References in periodicals archive ?
If there are vehicles in front of the V-Class or if there is oncoming traffic, the LEDs of the main-beam module are partially deactivated to create a U-shaped cut-out in the cone of light. The remaining areas of the roadway continue to be illuminated with the main-beam headlamps (partial main beam).
LiFi is considered a more secure data transmission form than WiFi, because a receiving device must be directly within the cone of light to receive a broadcasted signal.
The flashlight throws a wide cone of light. At a distance of six feet the circle of light is about six feet wide.
This, in turn, creates an optic shock wave called Cherenkov radiation, which resembles something like a cone of light. This light is recorded by the photo-multiplier tubes.
With the new laser high beams, one laser module per headlight generates a cone of light with twice the range of the all-LED headlight and each module comprises four high-power laser diodes.
Used on high beam setting only, the laser module in each lamp generates a cone of light with twice the range of an LED lamp.
Adaptive headlamps change the cone of light projected onto a road - effortlessly of course - in response to different driving speeds.
The cone of light the beam demarcates is an invitation for viewers to perform, to countervail the perfect geometry of the circle with the gangly reality of their bodies, to enter into the work and collapse art into life.
pouring out inside the cone of light above our heads and falling on all
The laser diode (LD) sends a coherent bean through the pin hole (PH) which spreads it into a cone of light which is partially reflected off the beam splitter (beam cube BC) to become the reference beam.