Lens, lens module and lamp

Abstract

The invention discloses a lens which comprises a light-in surface and a light-out surface. The light-in surface is a plane, the light-out surface is formed in the mode that a first curve rotates 360 degrees around the optical axis of the lens, and the light-out surface is a spherical surface; a light source containing cavity is formed in the light-in surface and used for containing a light source, the bottom surface of the light source containing cavity is formed in the mode that a second curve rotates 360 degrees around the optical axis, and the bottom surface is an ellipsoidal surface. According to the lens and a lens module, the lens module is formed by arranging multiple lenses together, so that integrated design of the lens module is achieved; not only can a light distribution function be achieved, but also a protective function of a transparent part can be achieved; due to the fact that the lens module is integrally designed, the design cost can be reduced. The lens and the lens module have the advantages of being simple in structure and convenient to process. In addition, the invention further provides the lens module with the lenses. Meanwhile, the invention further provides a lamp with the lens module.

Description

technical field [0001] The invention relates to the field of light distribution of LED lamps, in particular to a lens, a lens module and a lamp. Background technique [0002] As traditional incandescent light bulbs gradually fade out of the historical stage, the fourth-generation solid-state light source represented by LED has gradually established its core leadership in the lighting field. LED (Light Emitting Diode) has become a competitive new light source in the 21st century due to its high efficiency, pure light color, low energy consumption, long life, and no pollution. With the continuous improvement of LED luminous flux and luminous efficiency, the application of LED in the field of lighting is becoming more and more extensive. However, the light emitted from the surface of LED chips has a Lambertian distribution, which cannot be directly applied to lighting systems. Therefore, the secondary light distribution design using LED as the light source is particularly imp...

AI Technical Summary

Problems solved by technology

[0004] 1. The volume is too large. Due to the large volume of a single reflector, after the multi-in-one integration, the overall volume is larger, so that the overall design size of the lamp cannot be reduced;

[0005] 2. Since the reflector cup alone cannot achieve the dustproof and waterproof function of the lamp, it is generally necessary to add a transparent part outside the reflector cup, thus increasing the design cost of the lamp;

[0006] 3. The light distribution efficiency of the reflector is low, and the light spot is not uniform enough

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