Lens member and light-emitting device using same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jul 17, 2018
Grant Date -
Jul 24, 2014
app pub date -
Aug 13, 2012
filing date -
Aug 12, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lens member includes a light-incident side; a light-exit side that is opposite to the light-incident side, a Fresnel lens arranged on a center axis that passes through a center of the light-incident side, and a diffraction grating structure arranged around a periphery of the Fresnel lens and having a center through which the center axis passes. Also, it is disclosed that the Fresnel lens may include a first Fresnel lens and a second Fresnel lens, the first Fresnel lens includes annular prisms that are divided from a convex lens and having a center through which the center axis of the light-incident side passes, and the second Fresnel lens includes annular prisms that are divided from a TIR lens and arranged around the periphery of the first Fresnel lens, centering around the center axis of the light-incident side.
First Claim
Family
International Classification(s)
- F21V:FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES....
- F24J:PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED F....
- F21Y:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21L,....
- F21K:LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- F21S:NON-PORTABLE LIGHTING DEVICES OR SYSTEMS THEREOF
- [Classification Symbol]
- [Patents Count]
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