Optical Lenses and Lamps Containing Said Optical Lenses
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United States of America Patent
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Issued Date -
Nov 8, 2012
app pub date -
May 4, 2012
filing date -
May 5, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An optical lens and a lamp containing such optical lens suitable for use in commercial refrigerators are provided. The lamp has an overall long shape. The optical lens produces a bat-wing type of lighting distribution. The optical lens comprises a light incident surface and a light exit surface. The light incident surface comprises a sawtooth-like structure having a plurality of sawtooth-like protrusions. Each of the sawtooth-like protrusions respectively comprises a peak, and a respective valley exists between every two neighboring sawtooth-like protrusions. The distances between the light exit surface and the valleys between every respective two neighboring sawtooth-like protrusions are approximately the same. The sawtooth-like structure of the optical lens helps produce the bat-wing type of lighting distribution. The thickness is generally uniform throughout the optical lens. The optical lens can be manufactured by the extrusion process and has advantages comprising continuous production, high efficiency, simple operation and low cost.
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