LED secondary optical system with rectangular light spot, LED light source module and LED lamps

Abstract

The invention relates to an LED secondary optical system capable of generating approximately rectangular light spots, as well as an array, and an LED light source module. The optical system consists of an LED luminous body, a light reflector and a lens, the light reflector is bowl-shaped, the inner surface as the reflection surface is of a free curved surface, the lens consists of an incident surface and an emergent surface, the incident surface is of a free curved surface and the emergent surface is of a plane. The LED luminous body, the light reflector and the lens can form a high-efficiency LED secondary optical system capable of generating approximately rectangular light spots, and also can form an array respectively, namely a plurality of LED luminous bodies, a plurality of light reflectors and a plurality of lens respectively are arranged on an aluminum substrate to form an LED array, a light reflector array and a lens array. The three arrays can form a high-efficiency LED light source module with waterproof and dustproof functions, together with a radiator housing, a waterproof rubber ring and the like, and the module can be used for manufacturing high-power LED lamps such as a street lamp, a tunnel lamp, a projection lamp and the like.

Description

technical field [0001] The invention relates to a light-emitting diode (LED) secondary optical system with rectangular light spots, an LED light source module and an LED lamp. Background technique [0002] With the continuous improvement of LED manufacturing technology, its luminous efficacy continues to rise. So far, the luminous efficacy of high-power white LEDs has reached more than 100lm / w. This light effect makes it possible for LEDs to enter general lighting, especially in road lighting and other fields of directional lighting that have gradually been applied. However, because the current price of LED is much higher than that of traditional light sources, the light effect is only close to that of fluorescent lamps and metal halide lamps, and slightly lower than that of high-pressure sodium lamps. Therefore, the promotion of LEDs for general lighting must be based on improving the overall light efficiency of the LED lighting system, and this depends on improving the li...

AI Technical Summary

Problems solved by technology

[0004] 1. All LEDs are placed in the sealed cavity formed by the aluminum lamp housing and the transparent waterproof outer cover, and the sealing is realized by waterproof glue. In this way, after any LED fails, maintenance will be extremely difficult, especially if it cannot be repaired on site.

[0005] 2. The optical loss of the lens or reflector used for light distribution is at least 10%, and the waterproof transparent cover also has an optical loss of more than 10%.

[0007] It is not possible to adjust the direction of light rays greater than this angle

Therefore, high optical efficiency cannot be obtained

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