Optical lens and light source module provided with same

Abstract

The invention relates to a lens which comprises a bottom surface, a light incidence surface, a light emergence surface and a side surface, wherein the light incidence surface is a curved surface which is concave from the center of the bottom surface to the interior of the lens; the light emergence surface is opposite to the bottom surface, and comprises a concave surface located in the center of the top, and a convex surface located at the periphery of the concave surface; the concave surface is concave towards the light incidence surface; the convex surface is convex far away from the light incidence surface; the side surface is a fully reflecting surface, and comprises a first side surface and a second side surface which extend from two opposite sides of the bottom surface to the light outlet surface, and a third side surface and a fourth side surface which extend from the other two opposite sides of the bottom surface to the light emergence surface; the first side surface and the second side surface are inclined surfaces, and are gradually inclined outwards from the bottom surface to the light emergence surface; and the third side surface and the fourth side surface are perpendicular to the bottom surface. The invention further relates to a light source module comprising the lens and a light source.

Description

technical field [0001] The invention relates to the field of optics, in particular to an optical lens and a light source module with the optical lens. Background technique [0002] The effect of lamps using traditional light sources can basically meet the needs of various aspects, but the energy consumption is too large. Therefore, as a new generation of light sources, LEDs (Light Emitting Diode) have a tendency to gradually replace traditional light sources. [0003] The traditional fluorescent tube is a uniform and soft linear divergent light source. When using LED as the light source of the tube, because the LED is an approximate point light source, the most common method is to arrange several LEDs linearly on the substrate to form a light bar. , and then add a lampshade to form a lamp tube. However, because the light type of the LED is circular, and its light intensity gradually decreases from the center to the edge, the LED tube is not a linear light source that produc...

AI Technical Summary

Problems solved by technology

However, because the light type of the LED is circular, and its light intensity gradually decreases from the center to the edge, the LED tube is not a linear light source that produces uniform light, but forms multiple gathered apertures, resulting in overall lighting. Uneven and soft

In order to solve such problems, ordinary LED lamps need to use a large number of LEDs to be closely arranged, but this will increase the cost

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