Light-emitting diode (LED) cold light source lighting device

Abstract

The invention discloses a light-emitting diode (LED) cold light source lighting device which includes an LED chip. A radiator is fixed on one side of the LED chip, and a lens barrel is fixed on the other side of the LED chip. A first lens, a first space ring, a second lens, a second space ring, a third lens, a third space ring, a fourth lens and a press ring are sequentially disposed in the lens barrel along the emitting direction of light. Optical centers of the LED chip, the first lens, the second lens, the third lens and the fourth lens are all located on an identical optical axis. The first lens and the fourth lens are made of spherical optical glass, and the second lens and the third lens which are in the same structure are made of axially-symmetric aspheric optical plastics and placed along the optical axis in opposite directions. The LED cold light source lighting device has the advantages of being compact in structure, small in volume, high in light energy utilization ratio, developed in processing techniques and more suitable for application field where optical fiber bundle coupling lighting is needed.

Description

technical field [0001] The invention relates to an LED cold light source lighting device, in particular to an LED cold light source lighting device applied to optical fiber bundle coupling lighting. Background technique [0002] In the application field of optical fiber bundle coupled lighting, such as medical endoscopes, surgical microscopes and other lighting devices, xenon lamps or tungsten halogen lamps are mostly used for lighting at present, which have the disadvantages of bulky, high power consumption, short life, high heat generation, and light energy utilization. Low efficiency and many other shortcomings. [0003] With the rapid development of LED technology, LED lighting devices are gradually being promoted in the above-mentioned application fields. However, the current LED lighting devices mostly use the optical system of reflective bowl and rod mirror, which has low utilization rate of light energy, complicated processing technology and difficult assembly. and ...

AI Technical Summary

Problems solved by technology

[0002] In the application field of optical fiber bundle coupled lighting, such as medical endoscopes, surgical microscopes and other lighting devices, xenon lamps or tungsten halogen lamps are mostly used for lighting at present, which have the disadvantages of bulky, high power consumption, short life, high heat generation, and light energy utilization. Low efficiency and many other disadvantages

[0003] With the rapid development of LED technology, LED lighting devices are gradually being promoted in the above-mentioned application fields. However, the current LED lighting devices mostly use the optical system of reflective bowl and rod mirror, which has low utilization rate of light energy, complicated processing technology and difficult assembly. and other shortcomings

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