Total reflection lens

Abstract

The invention provides a total reflection lens. The total reflection lens is a conical light transmission body with a wide upper part and a narrow lower part and is provided with a through hole which can be used as a light incidence lens surface along a central axis; the upper end of the through hole is connected with an externally extended conical hole, and the through hole can be used as a lightemergence lens surface; one or more open grooves are arranged at the externally extended conical hole so that when a light source is arranged at the through hole of the total reflection lens, the most concentrated strong light in the center can expand the light distribution angle at the through hole and the externally extended conical hole, and the side light at the peripheral ring of the light source can be led to the externally extended conical hole and is emitted from the same through the reflection of the light incidence lens surface and the outer conical surface of the total reflection lens so as to increase the light focusing effect, the light emitting strength and the ray light with extremely high uniformity in an illumination region. The total reflection lens can ensure that the light ray can be emitted from the open grooves; and in addition, the total reflection lens has the function of leading ray for side illumination.

Description

technical field [0001] The invention relates to a lens, in particular to a total reflection lens. Background technique [0002] Relevant known structures in the prior art, such as China Taiwan Patent Announcement No. M275418 "lens body with light uniformity effect": "comprising a light incident mirror surface and a light exit mirror surface, the light incident mirror surface and the light exit mirror surface are respectively arranged on the The opposite ends of the lens body, wherein the entrance mirror surface is a convex lens surface, and a plurality of light distribution mirrors are distributed on the light exit mirror surface, and these light distribution mirrors are arranged to form a mirror group; After incident on the mirror surface, light with uniform luminosity and chromaticity can be projected through the light distribution and mixing of the light distribution mirrors set on the light exit mirror surface. [0003] The above-mentioned lens body is a solid lens, and...

AI Technical Summary

Problems solved by technology

[0004] However, although the structure of this case can provide the effect of light source projection to generate uniform light; but because the lens body is a solid body, although it is provided for combination with a light-emitting diode (LED) light source with small volume and low heat generation, if it is used for a long time The use of the light source still has the main disadvantage of hindering the heat dissipation of the light source, which seriously affects the service life of the light source and shortens the service life

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