LED light source system

Abstract

The invention provides an LED light source system and an LED lighting device. The LED light source system comprises an LED chip array, a collimating lens array, a first fly's-eye lens and a second fly's-eye lens, wherein the first fly's-eye lens comprises orthohexagonal microlens arrays which are closely arranged; the second fly's-eye lens comprises rectangular microlens arrays; each rectangular microlens on the second fly's-eye lens and each orthohexagonal microlens on the first fly's-eye lens are in one-to-one correspondence, the center of the rectangular microlens is coincided with the center of the orthohexagonal microlens, and the length of the short edge of the rectangular microlens is equal to 1.5 times of side length of the orthohexagonal microlens on the first fly's-eye lens; two or more edges of the image of each LED chip, which is formed on each rectangular microlens of the second fly's-eye lens after passing through each collimating lens and each orthohexagonal microlens of the first fly's-eye lens, are coincided with the edges of the corresponding rectangular microlens. According to the invention, the image of each LED chip can be well matched with a rectangular clear aperture of the second fly's-eye lens, so that the optical extending amount of the system is reduced, and the brightness is improved.

Description

technical field [0001] The invention relates to the field of light sources such as projection and lighting, and in particular to an LED light source system and an LED lighting device using the LED light source system. Background technique [0002] Traditional high-power stage lighting equipment generally uses metal halide discharge bulbs as light sources. Since the metal halide discharge bulb is a white light source, when it is necessary to generate colored light, it is necessary to install a filter in front of the metal halide discharge bulb to achieve light output of different colors. The disadvantage of this light source is that the service life of the metal halide discharge bulb is low, ranging from only a few hundred hours to thousands of hours; Rich. [0003] High-power light-emitting diodes (LEDs) have gradually become the preferred device for development and application in the field of lighting due to their safety, pollution-free, and long service life, and their s...

AI Technical Summary

Problems solved by technology

[0004] However, at present, the luminous flux of a single LED chip is limited, which is far from meeting the requirements of stage lighting, so LED chips are usually arranged in an array to achieve high-brightness light output

In order to achieve light uniformity, fly-eye lens pairs are usually used in the light source system. However, in the prior art, the fly-eye lens pairs used are all composed of identical fly-eye lenses. In order to match the aperture of the entire system, The clear aperture of each microlens in the fly-eye lens is set to be a regular hexagon, while the size of the existing LED chip is mostly square, which makes the image of the square LED chip and the light-passing aperture of each microlens in the fly-eye lens Aperture mismatch, resulting in increased etendue and reduced brightness of the system

Although each LED chip can be cut into a regular hexagon to match the image of the LED chip with the clear aperture of each microlens in the second fly-eye lens, the regular hexagonal LED chip cannot be obtained by splitting, which makes the chip Scribing costs are high and production is difficult

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