Light distribution lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 31, 2017
Issued Date -
N/A
app pub date -
Mar 27, 2015
filing date -
Mar 28, 2014
priority date (Note) -
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Abstract
A lens for light emitting lamps that use light emitting elements such as LEDs, etc., is provided. The lens has a specific surface shape for light-distribution control to achieve desired light distributions, as well as a light emitting device using said lens. On the lens surface of the light emitting side which has a double-peak shape to obtain a light distribution characteristic having long and short two axes, by possessing a straight-line part in the surface shape of the light emitting side viewed on the lens short-axis cross section, a desired smoothly-diffused light distribution having a longitudinal direction with a certain width is obtained. The lens may be designed to have a surface of the light emitting side comprising a collection of straight lines parallel to the lens short-axis cross section, or to have a continuous curved surface comprising a collection of straight lines parallel to the lens short axis.
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