Lens and LED (light emitting diode) lamp with lens

Abstract

Disclosed are a lens and an LED (light emitting diode) lamp with the lens. The lens comprises a light inlet end and a light outlet end, wherein the light input end is a revolving parabolic surface revolution solid which uses the optic axis as the rotation axis, the periphery of the light inlet end is a revolving parabolic surface, a light source containing cavity is formed in the small end of the light input end, a convex spherical surface is formed at a spherical cap of the light source containing cavity, an intersection angle between the end face of the light outlet end and the optic axis is an acute angle, a plurality of strip-shaped convex surfaces which are connected are arranged on the end face of the light outlet end, and light rays shot into the side wall of the light source containing cavity through the periphery of the light inlet end are reflected to the end face of the light outlet end through the periphery of the light inlet end. According to the lens and the LED lamp with the lens, the lens reflects the light rays through the periphery of the revolving parabolic surface, and converges the light rays through the convex spherical surface. Furthermore, the end face of the light outlet end is an oblique plane which forms the acute angle with the optic axis, the plurality of the strip-shaped convex surfaces which are connected are arranged, rectangular spots of 80 degrees*20 degrees are formed after the light rays are reflected through the end face of the light outlet end, an then are emitted out, and therefore a light outlet range is wide, the lens and the LED lamp with the lens are simple in structure and low in cost, and optical utilization rate of the LED lamp with the lens is improved.

Description

technical field [0001] The invention relates to the lighting field, in particular to a lens and an LED lamp with the lens. Background technique [0002] At present, the light sources of airport navigation lighting equipment mainly use traditional light sources such as incandescent lamps, tungsten halogen lamps, and gas discharge lamps. The light color of the light source is approximately white, and colored glass masks are added to obtain lights of different colors. The existing lighting equipment has the disadvantages of short service life, large energy loss and unfavorable structure. The LED has the advantages of small size, light weight, less energy consumption, long life, short response time and good shock resistance. Different color LEDs meet the needs of airport navigation lighting equipment for different color light sources. At the same time, the substantial improvement of LED light efficiency also makes LEDs more and more widely used in airports. However, most of th...

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Problems solved by technology

However, most of the existing LED lamps are complex in structure, and the irradiation range of LED la

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