TIR lens for searchlight and TIR lens module

Abstract

The invention discloses a TIR lens for a searchlight and a TIR lens module thereof. The TIR lens comprises a lens body, wherein the top of the lens body is rectangular; the lens body comprises a firstincident surface, a first exit surface, a second incident surface, a second exit surface, a full reflection surface, a transition surface and a connecting surface; the first exit surface is arched; the second exit face is in an annular shape, the second exit face is connected with the first exit face through an inverted conical transition face, and the first exit face is located inside the secondexit face; the first incident face and the first exit face form a first light path, so that part of the light rays enter the lens from the first incident face and is emitted from the first exit faceto reach the irradiation face; and the second incident face, the second exit face and the full reflection face form a second light path, so that another part of light enters the lens from the second incident face and is emitted from the second exit face through the full reflection face, and illumination brightness is superimposed and reaches the irradiation face. According to the TIR lens, the lens quality is reduced, the actual light emitting area is increased, and the illuminance of the central area is improved.

Description

technical field [0001] The invention relates to the field of lenses, in particular to a TIR lens for a searchlight and a TIR lens module. Background technique [0002] The TIR lens currently used as a searchlight is generally an ingot-shaped TIR lens. The lens is a rotationally symmetrical structure about the central axis, and the top view is circular. In this way, when the lens module is formed, the junction of the four adjacent lenses has a large gap. The waste of space, for searchlights with limited aperture size, the central illuminance of the searchlight target surface can be further improved, and the lens module composed of ingot-shaped TIR will also cause the quality of the entire lens module to be large. Contents of the invention [0003] The object of the present invention is to provide a lens that can solve one or more of the above technical problems. [0004] In order to achieve the above object, the technical scheme proposed by the present invention is as foll...

AI Technical Summary

Problems solved by technology

[0002] The TIR lens currently used as a searchlight is generally an ingot-shaped TIR lens. The lens is a rotationally symmetrical structure about the central axis, and the top view is circular. In this way, when the lens module is formed, the junction of the four adjacent lenses has a large gap. The waste of space, for searchlights with limited aperture size, the central illuminance of the searchlight target surface can be further improved, and the lens module composed of ingot-shaped TIR will also cause the quality of the entire lens module to be large

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