LED mine lamp using non-imaging optical system

Abstract

The present invention provides a LED miner's lamp using nonimaging optics, including a nonimaging optics, a casing part and a lighting circuit part, miner's lamp adopting aspherical composite lens and free surface reflector form the optical system, since the convexity of the composite lens and the reflecting surface of the reflector are free surfaces designed according to light distributing requirement, and optical line adjacent to the optical axis and optical line far from the optical axis are respectively controlled by the composite lens and free surface reflector, thus the size and the lighting distribution of the lighting area is more exact controlled, this improves utilization rate of the light energy and bas better visual effect.

Description

technical field [0001] The invention relates to a miner's lamp using LED as a light source, in particular to an LED miner's lamp using a non-imaging optical system. Background technique [0002] With the continuous improvement of the light efficiency of high-power LEDs, it has become possible to use LEDs as light sources for miner's lamps. In order to improve the utilization rate of the light energy of the light source, previous design schemes generally use a quadric surface (such as a paraboloid) reflector to gather light, or use a quadric surface reflector to cooperate with a spherical lens to achieve light energy distribution. The method of only using a quadric surface reflector cannot control the optical path of light near the optical axis, and a simple quadric surface cannot meet the light distribution requirements in many cases. In the method of using a parabolic reflector to cooperate with a spherical lens, the solution of installing the lens at the position of the l...

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