Full reflection prism optical system with novel light source arrangement

Abstract

The invention aims to provide a full reflection prism optical system with novel light source arrangement. A first light source, a second light source and a third light source constitute a light sourcesystem, light rays are collimated by a collimation system, emitted to the light-emitting face in a collimation mode through a full reflection mirror face with the circular conical face and scatteredby a scattering pattern, and thus the even lighting effect is obtained; the third light source is located on the optical focus of the collimation system, and the uniformity of functions achieved by the third light source is improved; the first light source and the second light source are symmetrically arranged on the two sides of the third light source at equal distances to form a symmetric lighttype, a middle broken dark area of the lighting effect of the functions achieved by the first light source and the second light source are made up, and the uniformity is improved; required lumen inputis unchanged, according to the functions achieved by the first light source and the second light source, the two same LED light sources are adopted, the LED number is doubled compared with one LED inthe prior art for achieving the function, the power of a single LED can be reduced by times, and the small-power LEDs are adopted; and through the arrangement scheme of the three light sources, heatis more dispersed, heat dissipation is facilitated, heat failure is reduced, and the light efficiency is improved.

Description

technical field [0001] The invention relates to the field of automobile lamps, in particular to a total reflection prism optical system with novel light source arrangement. Background technique [0002] Generally, the optical system of thick-walled parts includes light source, collimation system, total reflection system and scattering system. Generally speaking, for automobile lamps, it is necessary to design the lamps that can strictly meet the requirements of laws and regulations, and also have a beautiful and generous appearance. The space of automotive lamps is becoming more and more compact, which puts forward more requirements on the lighting performance of automotive lamps, including the uniformity and consistency of luminance. [0003] In existing optical systems that realize different functions in the same area, the same optical system is usually used with different LED light sources. Since many optical systems are designed based on one focal point, when two LED l...

AI Technical Summary

Problems solved by technology

Because many optical systems are designed based on one focal point, when two LED light sources share a collimation system, both LEDs are in a defocused state, and this defocused state will greatly affect the lighting of the entire optical system Uniformity and optical efficiency; In addition, for the two light sources that are defocused in the prior art, large-size LEDs are not suitable for the light source, because the larger the size of the light source, the more obvious the defocus will be, so the uniformity of the light effect will be reduced. further down

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