Floodlight total-reflection lens and LED (Light Emitting Diode) lamp using lens

Abstract

The invention relates to a floodlight total-reflection lens. The total-reflection lens is a rotary body with a rotary bus as a folding line; the rotary bus of the rotary body is the folding line which is formed by connecting four line sections in sequence; a light source mounting hole is formed on the light incoming surface of the total-reflection lens; a conical concave surface is arranged on the center of the light emitting surface, wherein the peak of the conical concave surface is on the symmetrical shaft of the total-reflection lens; the light source mounting hole comprises a cylindrical blind hole and a conical concave hole formed by extending the cylindrical blind hole inwards; and the symmetrical shaft of the cylindrical blind hole and the symmetrical shaft of the total-reflection lens are overlapped, and the peak of the conical concave hole is on the symmetrical shaft of the total-reflection lens. According to the floodlight total-reflection lens, the rotary bus of the floodlight total-reflection lens adopts the folding line, so that the total-reflection lens meets the requirements of a lighting angle and realizes the floodlight lighting, and simultaneously, the volume is minimized; and the light angle of a light source close to an optical axis can be enlarged through the conical concave surface of the light emitting surface and the bottom conical concave hole, and the lighting uniformity of the lamp in the lighting angle is improved greatly.

Description

technical field

[0001] The invention relates to the field of lens technology, and more specifically, to a floodlight total reflection lens and an LED lamp using the lens. Background technique

[0002] For LED lights, reflector cups are generally used for light distribution, but this method is not ideal for light type processing, especially the light intensity along the LED optical axis is relatively large, but light distribution through reflectors will always cause low beams The light intensity of the shaft part is high. In addition, there is also a convex lens to concentrate the LED light, but this method has a low utilization rate of the LED luminous flux, which means that the light with a large light-emitting angle of the LED cannot be used, which ultimately leads to a low light efficiency utilization rate of the lamp. At present, there is also a kind of floodlight lens, which is in the LED light-collecting total reflection lens (such as figure 1 Shown), on the basis of...

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