AN OPTICAL DEVICE
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United States of America Patent
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Issued Date -
Mar 14, 2024
app pub date -
Jan 3, 2022
filing date -
Feb 23, 2021
priority date (Note) -
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Abstract
An optical device for modifying a light distribution is made of transparent material and includes a front wall constituting a front portion, a coupling portion for connecting to a light source system, and side walls between the coupling portion and the front portion. The front wall is configured to let through a first part of light emitted by the light source, and the side walls are configured to let through a second part of the light. The side walls have grooves that refract at least 80% of the second part of the light obliquely rearwards with respect to a direction from the coupling portion to the front portion. Thus, the optical device can be used for illuminating both a floor and a ceiling so that light emitted to unwanted directions and potentially causing glare can be kept at a low level.
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