| 摘要 |
PURPOSE: An LED module is provided to have light distribution with the center and the surrounding illuminance of the lens constant by forming a concave part in a central part of a lens. CONSTITUTION: A lens(12) is hardened to surround the around of an LED chip(11) with silicon. The lens comprises a packaging part(12a) and a lens unit(12b). The packaging part is hardened by silicon to surround the LED chip. The lens unit is hardened by silicon to have lens shape on the front of the packaging part. A conical shape depression(121) is formed on the central part of the lens. A convex part(122) is formed in the around the conical shape depression.
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