Lens matched with high-power LED lamp

Abstract

The invention discloses a lens matched with a high-power LED lamp, which solves the technical problems that the emergent light intensity and uniformity of the lens do not accord with the national arterial traffic standard and the lens is easy to age. The invention adopts the technical scheme that the structure of the lens matched with the high-power LED lamp comprises a lens monomer matched with a basic luminous unit of the LED lamp, and the lens monomer has a composite structure consisting of a cylindrical convex lens and two spherical convex lenses symmetrically distributed on two sides of the cylindrical convex lens. The lens has the advantages of limiting the divergence range of a light source and a ground light spot shape by redesigning and combining the geometric shape of the lens monomer, avoiding the occurrence of zebra stripes on a road, reaching strongest illumination in the state specified illumination range of the single lens monomer, solving the problem puzzling researchers for long time, beautifying the urban environment and saving energy to a certain degree.

Description

technical field [0001] The invention relates to a lens matched with a high-power LED lamp, which belongs to the field of high-power LED street lamp lighting, in particular to a composite optical lens capable of achieving the strongest illumination within the lighting range of a single lens unit specified by the state. Background technique [0002] For high-power LEDs, the directionality of light emission is very strong. The general package is to add a lens to form a light distribution after implanting a chip on a heat sink. The light output angle can be between 30 degrees and 170 degrees. Adjustable, this kind of light distribution is called Brown type (water drop type) light distribution. The light spot formed on the ground is approximately circular, and it is a light spot with the highest brightness in the center and a decreasing trend towards the edge. If the secondary light distribution is considered, a circular light spot will be formed after the street lamp hits the ro...

AI Technical Summary

Problems solved by technology

[0002] For high-power LEDs, the directionality of light emission is very strong. The general package is to add a lens to form a light distribution after implanting a chip on a heat sink. The light output angle can be between 30 degrees and 170 degrees. Adjustable, this kind of light distribution is called Brown type (water drop type) light distribution. The light spot formed on the ground is approximately circular, and it is a light spot with the highest brightness in the center and a decreasing trend towards the edge. If the secondary light distribution is considered, a circular light spot will be formed after the street lamp hits the road surface. For road conditions, it is generally long vertically and narrow horizontally, which belongs to a rectangular range, so it will cause zebra crossing or light waste. The secondary light distribution also needs to consider the issue of uniformity, so the light distribution is also critical

At present, the batwing light distribution lens made of acrylic is generally used, but its uniformity cannot meet the national standard after measurement, and the anti-ultraviolet ability of acrylic is relatively weak, and it will turn yellow after a few months of ultraviolet irradiation. , affecting the light transmittance

For the occurrence of the above problems, the prior art does not have a good solution, which brings inconvenience to the work in this field

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