Patent ID: 9028111
Filing Date: 2015-05-12
Classification: F21V,F21W,F21Y,G02B

Abstract:
1. A lens module for LED light sources, comprising: an LED light source; and a lens body, comprising a light exiting surface, a light incident surface defining a recess, and a bottom surface connecting the light incident surface and the light exiting surface, the LED light source received in the recess, the light incident surface being closer to the LED light source than the light exiting surface; wherein, the bottom surface is on an assumed reference surface, a point C is defined as a projection point of a center point of the LED light source on the reference surface, a junction of the light incident surface and the reference surface is defined as a closed first curve, an extension line through the point C extended in a first direction intersects the first curve at points A and B, a bee line distance between the points A and B is longer than a bee line distance between any two points on the first curve, and a point Q is defined to be the point on the incident surface which has a longest vertical distance away from the reference surface; those minimum distances between the points satisfy conditions of: Z wherein, Z