A kind of led lamp

Abstract

The invention provides an LED (Light-Emitting Diode) lamp, comprising a housing, an LED bulb located in the housing, a reflecting cup covering the periphery of the LED bulb and connected with the housing, and a Fresnel lens connected with the reflecting cup along the circumferential direction of the reflecting cup, located at the top of the LED bulb and protruded towards the direction away from the LED bulb. The LED (Light-Emitting Diode) lamp disclosed by the invention is additionally provided with the Fresnel lens at the top of the LED bulb; the Fresnel lens is protruded towards the direction away from the LED bulb; according to the optical property of the Fresnel lens, after reaching the Fresnel lens, the light emitted by the LED bulb is refracted, and most light is irradiated in parallel with the central line of the reflecting cup, namely, most light is irradiated as collimated light; in this way, the light gathered in a focal point is reduced, and diffused light is reduced, thus the emergence angle of the light emitted by the LED bulb is further reduced, namely, the emergency angle of the LED lamp is further reduced, so that the irradiation distance of the LED lamp is further increased.

Description

technical field [0001] The invention relates to the technical field of LED lamp manufacturing, and more specifically, relates to an LED lamp. Background technique [0002] As a new type of high-efficiency solid light source, LED lamps have significant advantages such as high luminous efficiency, long service life, energy saving and environmental protection, rich colors, flexible and controllable, fast response, miniaturization, easy integration, safety and reliability, and are the most promising in the 21st century. green lighting source. LED lighting sources have been widely used in landscape lighting, street lighting, large-screen display, backlight and other fields. [0003] At present, most of the high-power LED lamps are wide, and the light is distributed in the form of a single reflector, and the LED bulb is set at the bottom of the reflector. Part of the light emitted by the LED bulb is directly irradiated through the opening of the reflector, and the other part is ...

AI Technical Summary

Problems solved by technology

[0005] However, common convex lenses are used at present. Since the optical surfaces of the convex lenses 11 have the same curvature, less light rays will become collimated rays after being refracted by the convex lens 11, that is, the light rays are distributed along the center line of the reflective cup 12. The light gathers at one point, and then diverges and distributes, resulting in a large exit angle of LED lamps, which cannot meet the needs of some long-distance illumination

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