Invention Application
US20120300467A1 OPTICAL LENS AND LIGHTING DEVICE 审中-公开
光学镜头和照明设备

OPTICAL LENS AND LIGHTING DEVICE
Abstract:
A lighting device includes a light source and an optical lens. The optical lens includes a light-source-side optical surface disposed proximate to the light source, and a lighting-side optical surface opposite to the light-source-side optical surface. At least one of the light-source-side optical surface and the lighting-side optical surface satisfies a bi-axial sag function.
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