Wall washing lens with high utilization rate

Abstract

The invention discloses a wall washing lens with the high utilization rate. The wall washing lens comprises a first refraction and reflection system, a refraction system and a second refraction and reflection system which are sequentially connected. According to the wall washing lens with the high utilization rate, deflection of light rays is achieved under the condition of not adding a lens material. By the adoption of the wall washing lens with the high utilization rate, the common bottom dark region in the wall washing effect can be eliminated, and the uniformity of illuminance is increased by 70% or above; the lens is designed according to the actual wall washing height, and the actual utilization rate of luminous flux reaches 80%; and by the adoption of the wall washing lens, the glare can be lowered, and the light pollution caused by unwanted light is reduced.

Description

technical field [0001] The invention relates to the technical field of lighting, and more specifically, to a wall-washing lens with high utilization rate. Background technique [0002] In the wall-washing lighting fixtures, the LED lens is generally made into a small angle to achieve the proper height and uniformity of the wall-washing. Although making the angle smaller can increase the height of the washing wall, about 50% of the luminous flux is still wasted. In order to improve the utilization rate, generally the lamp can be tilted towards the wall at a certain angle, so that more light can be irradiated On the wall, but it will reduce the height of the wall wash and the uniformity of illumination on the wall. There are also small-angle lenses designed to be polarized, but generally a polarized structure is added to the small-angle lens to achieve the purpose, but after this treatment, the material of the lens is increased, and the cost is increased. Although the polariz...

AI Technical Summary

Problems solved by technology

Although making the angle smaller can increase the height of the washing wall, about 50% of the luminous flux is still wasted. In order to improve the utilization rate, generally the lamp can be tilted towards the wall at a certain angle, so that more light can be irradiated On the wall, but it will reduce the height of the wall wash and the uniformity of illumination on the wall

There are also small-angle lenses designed to be polarized, but generally a polarized structure is added to the small-angle lens to achieve the purpose, but after this treatment, the material of the lens is increased, and the cost is increased. Although the polarized structure can be made into a sawtooth shape , to reduce the material, but the amount of reduction is limited, and the difficulty of processing increases, and the anti-glare structure is made into a sawtooth shape, which will increase the stray light accordingly, which not only affects the uniformity of illumination on the wall, but also increases the glare

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