Mirror face floodlighting reflecting cup with uniform illumination and spot light using reflecting cup

Abstract

The invention relates to a mirror face floodlighting reflecting cup with uniform illumination and a spot light using the reflecting cup. The mirror face floodlighting reflecting cup comprises a reflecting cup and a light source of which a luminous chip is positioned on the symmetric axis of the reflecting cup, wherein the top surface and the bottom surface of the reflecting cup are open; a bus of the reflecting cup is a fold line; the inner surface of the reflecting cup is a revolving mirror face; the revolving mirror face is formed by revolving a straight line which forms a certain included angle with the symmetric axis of the reflecting cup around the symmetric axis; the fold line is formed by connecting at least three line segments in sequence; and included angles between the line segments and the symmetric axis of the reflecting cup progressively decrease in sequence along a direction ranging from the bottom surface to the top surface of the reflecting cup. In the mirror face floodlighting reflecting cup with uniform illumination, the bus of the reflecting cup is a fold line, and a revolving mirror face is adopted on the inner surface of the reflecting cup, so that the distance between the same vertical section and a light source is equal, the light spot effect is uniform, and the phenomenon of bright and dark pedal-shaped strips on edges is eliminated while a maximum half-light intensity angle is achieved.

Description

technical field [0001] The invention relates to a reflective cup, more specifically, to a specular flood reflective cup with uniform illuminance and a projecting lamp using the reflective cup. Background technique [0002] In the prior art, mirror metal halide floodlights mostly achieve a large half light intensity angle (such as figure 1 shown). However, after the inner surface of the reflector is combined by planes, petal-shaped light and dark stripes may appear on the edge of the spot (such as figure 2 shown), resulting in uneven spot effect, which is caused by the unequal distance from the center of the plane to the light source and the distance from the edge of the plane to the light source. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a specular flood reflector with uniform illuminance and a projecting lamp using the reflector in view of the above-mentioned defects of the prior art. [0004] The tech...

AI Technical Summary

Problems solved by technology

However, after the inner surface of the reflector is combined by planes, petal-shaped light and dark stripes may appear on the edge of the spot (such as figure 2 shown), resulting in an uneven spot effect, which is caused by the unequal distance from the center of the plane to the light source and the distance from the edge of the plane to the light source

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