Lens for LED lamp

Abstract

The invention discloses a lens for an LED lamp. A groove is formed in the bottom face of the lens, the cross section of the groove is circular, the inner diameters of the groove are gradually reduced from outside to inside, a protrusion is further arranged in the groove and protrudes out of the bottom face of the lens, the whole protrusion is in a circular truncated cone shape, the diameters of the cross sections of the protrusion are gradually reduced from inside to outside, a light source containing cavity is formed in the protrusion, and an opening is formed in the bottom. According to the lens, on the basis of the lens structure, the shape and the size of the lens are ingeniously designed, simulation is achieved through a computer, finally a designed graph is led into computer simulation software to conduct design simulation, a light path is detected to conduct local optimization, and the lens meets the design requirement finally. The lens for the LED lamp has the advantages that the light-emitting area is larger, and the surface brightness of the lens is reduced; the height of the lens is reduced, and space is saved for radiating and a power source; the thickness of the lens is reduced, the cost of the lens can be saved, meanwhile, the shaping time of the lens is shortened, and the cost of the lens is substantially reduced.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to a lens for an LED lamp. Background technique [0002] The LED fully transparent reflective lens can distribute the luminous flux of the LED lamp beads within the 2π solid angle, and the luminous flux utilization rate is high, which can reach more than 85%, and the installation is easy. The lens is easy to process and has a small volume, which requires little space and is suitable for installation in various lamps. At present, lamps equipped with LED lenses have been widely used, such as architectural lighting, general lighting, sign lighting, landscape lighting, traffic lights, etc. have been well used. With the continuous improvement of LED technology, the prospect of LED lens will be better. [0003] Existing lenses are designed according to Snell's law. Generally speaking, the lens adopts a bowl-shaped structure with rotational symmetry and a hollow bottom. [0004] like figur...

AI Technical Summary

Problems solved by technology

Therefore, in order to increase the area of ​​the light-emitting surface, the height of the lens can only be increased proportionally. However, as the height of the lens increases, the light energy will also decrease with the increase of the propagation distance, which will reduce the light-emitting efficiency; The space becomes smaller, which affects the performance of the product

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