Optical unit with light emitting structure, light emitting structure and light box with light emitting structure

Abstract

The invention relates to an optical unit with a light emitting structure, the light emitting structure, and a light box with the light emitting structure, wherein the optical unit comprises a body and a light blocking structure; the body comprises at least one reflecting surface; the light blocking structure comprises a first light blocking structure and a second light blocking structure; the first light blocking structure and the body are integrally formed; the second light blocking structure is arranged in the first light blocking structure; the first light blocking structure is partly arranged around the reflecting surface at least to block light leakage from the reflecting surface through the second light blocking structure.

Description

Technical field [0001] The invention relates to an optical unit and a light emitting structure for a light emitting structure and a light box having the light emitting structure. Background technique [0002] As a widely used lighting technology, LED lighting technology has the advantages of high luminous intensity, long service life, high efficiency and low energy. Lighting devices or lighting modules that use LED light sources often need to have good light distribution, so lenses used for LED light sources are often used in the above-mentioned lighting devices or lighting modules to finally form the expected emitted light with the help of the optical performance of the lens Light distribution. However, in practical applications, the light emitted from the lens often forms stray light that is different from the main emitted light, and such stray light usually affects the actual optical performance of the lighting device or the lighting module. [0003] A solution in the prior ar...

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Problems solved by technology

[0003] One solution in the prior art proposes the use of opaque prints, which are placed on the side surfaces of the lenses of the lighting device, so that the light from the light source of the lens, especially stray light, is reflected by the transparent sides. The printed matter is blocked, so the stray light cannot exit and affect the main exit light exiting from the lens

According to such a design, although stray light can be blocked, the process of forming printed matter on the transparent outer surface is more complicated, and it cannot withstand long-term external effects such as friction, resulting in attenuation or even disappearance of the effect of blocking light

In addition, another solution in the prior art proposes to use an opaque cover, which is arranged outside the lighting device and abuts against the outer surface of the lighting device, thereby forming the effect of blocking stray light , but the extra cover has the disadvantage of increasing the cost of the original lighting device

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