TIR lens capable of effectively eliminating color separation and improving light spot roundness

Abstract

The invention discloses a TIR lens capable of effectively eliminating color separation and improving light spot roundness, which comprises a TIR main body, a light source and a bead surface, wherein the TIR main body is symmetrically arranged relative to the optical axis; the TIR main body is of a bowl-shaped structure; the bead surface is arranged on the end surface of the wider end of the TIR main body; the light source is mounted at the narrower end of the TIR main body; the side, which is far away from the TIR main body, of the bead surface is equally divided into a first sub-bead surfaceand a second sub-bead surface which are symmetrical to each other; a plurality of microstructures which are sequentially arranged and connected in a contact manner are uniformly and convexly arrangedon the surfaces of the first sub-bead surface and the second sub-bead surface, the bottom surfaces of the microstructures are regular polygons with no less than five sides, the microstructures protrude from the bottom surfaces in a spherical surface manner, and light-transmitting bead points are formed between every two adjacent microstructures of the same sub-bead surface in a filling manner; thebottom surfaces of the microstructures of the first sub-bead surface and the second sub-bead surface are orthogonal to each other; and through the first sub-bead surface and the second sub-bead surface which are orthogonal to each other as well as the light-transmitting bead points filled in the gaps of the microstructures, the TIR lens not only can enable the light spots to present white light without color separation, but also can present light spots tending to be absolutely circular.

Description

technical field [0001] The invention relates to the technical field of TIR lenses, in particular to a TIR lens capable of effectively eliminating color separation and improving the circularity of light spots. Background technique [0002] In order to improve the utilization rate of LED light energy, a kind of total internal reflection (TIR) ​​lens with free-form surface is currently produced. The total internal reflection lens adopts the principle of total reflection to collect and process light. According to the light energy distribution characteristics of LED, through Control the ray path to obtain discrete points on the contour curve of the refraction surface and reflection surface of the TIR lens, use interpolation to obtain the spline curve, and then rotate 360° to obtain the model of the TIR lens. [0003] The TIR lens can achieve beam angles of different angles, but because white light is a mixture of light of different wavelengths (red, orange, yellow, green, blue, a...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a TIR lens that can effectively eliminate color separation and improve the roundness of the light spot. The advantage of being closer to the ideal state solves the problem that the formation of the polygonal microstructure bead surface is easy to image, and the light spot will appear as a very obvious polygon.

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