Small collimation system used for single-core surface mounted device LED

A single-chip, collimated technology, applied in the parts of lighting devices, lighting devices, light sources, etc., can solve the problems of insufficient energy concentration, large divergence angle of high-power LEDs, and low utilization rate of light energy, so as to improve the utilization rate. , The effect of small lens thickness and short optical path

Inactive Publication Date: 2014-11-19
李果华
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  • Abstract
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Problems solved by technology

[0004] The present invention provides a small collimation system for single-core patch-type LEDs in order to solve the problem of large

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  • Small collimation system used for single-core surface mounted device LED
  • Small collimation system used for single-core surface mounted device LED
  • Small collimation system used for single-core surface mounted device LED

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Embodiment Construction

[0019] The system includes LED collimating lens, single-chip SMD LED, and LED fixing device; LED collimating lens consists of five surfaces, which are divided into two parts: refraction part and internal total reflection part. The first surface is the refraction surface of light with a large angle from the optical axis, the second surface is the total reflection surface of internal light, the third surface is the exit surface of total reflection light, and the fourth surface is the surface of light with a small angle from the optical axis The first refraction surface, the fifth surface is the second refraction surface of small-angle light. The large-angle light emitted by the LED chip is refracted by the first surface and then completely reflected by the second surface, so that the light is parallel to the optical axis and emitted by the third surface; the angle of the small-angle light is reduced after being refracted by the fourth surface After being refracted by the fifth s...

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Abstract

The invention discloses a small collimation system used for a single-core surface mounted device LED, and relates to the field of non-imaging optics, in particular to a small LED collimation lens. The problems that an existing LED lighting system is large in divergence angle, low in illumination due to remote lighting and the like are solved. The small collimation system comprises the LED collimation lens, the single-core surface mounted device LED and an LED and collimation lens connecting device. The LED collimation lens comprises an inner full-reflection collimation part and a refraction collimation part. According to the inner full-reflection collimation part, light with a large angle formed between the light and an optical axis is refracted through a first face and collimated through a second face in a full-reflection mode and emerges through a third face. According to the refraction part, light with a small angle formed between the light and the optical axis is collimated through a fourth face and a fifth face in a refraction mode. Light emitted by the LED can exit at a small angle after passing through the two parts of the lens. The designed LED and collimation lens connecting device can accurately fix an LED light source on the focal point of the collimation lens, and meanwhile the heat dissipation of the LED is accelerated due to pure aluminum material. The emergent light passing through the collimation system is good in collimation performance.

Description

technical field [0001] The present invention relates to the field of non-imaging LED lighting. Background technique [0002] LED has the advantages of power saving, long service life, low-voltage drive, and small size. It is a new type of light source that is energy-saving, environmentally friendly, and low-carbon. Instruments, car lights, etc. are more and more widely used, and LED will become the mainstream lighting source in the future. [0003] Because the divergence angle of the LED light source is very large, generally 140°, the energy is more divergent during long-distance lighting, which makes the illumination on the lighting surface lower. Higher fields require collimation of the LED output light. LEDs can be collimated using either a single reflector or a freeform lens. If the reflector is used, the light in the area with a large divergence angle can be collimated better, but for the light with a small angle, the depth of the reflector must be made very deep, re...

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Application Information

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IPC IPC(8): F21V5/04F21Y101/02
Inventor 孙健刚李果华朱孔硕
Owner 李果华
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