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Lens for UV led collimation

A lens and ultraviolet technology, applied in semiconductor lighting technology and application fields, can solve problems such as unsatisfactory collimation effect, and achieve the effects of simple structure, good collimation effect and prolonged service life

Active Publication Date: 2016-11-30
CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the present invention provides a lens for ultraviolet LED collimation, which adopts the design of free-form surface reflection and refraction combined collimation, realizes the collimation effect with a collimation degree of 2 degrees, and solves the problem of existing LED collimation lenses. The problem of unsatisfactory collimation effect

Method used

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  • Lens for UV led collimation
  • Lens for UV led collimation
  • Lens for UV led collimation

Examples

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Embodiment 1

[0033] Embodiment 1 adopts the LED collimating lens of integrated design

[0034] The lens shown in this embodiment includes a first free-form surface 1 and a total reflection free-form surface 2, the first free-form surface 1 and the total-reflection free-form surface 2 are rotators with the optical axis as the axis, and the total-reflection free-form surface 2 The opening of the opening gradually increases along the exiting direction of the optical axis; the first free-form surface 1 is arranged inside the total reflection free-form surface 2, and the first free-form surface 1 is convex along the exiting direction of the optical axis. The first free-form surface 1 is used to refract the light near the optical axis, so that the light can be emitted parallel to the optical axis; the total reflection free-form surface 2 is used to reflect the light far away from the optical axis, so that the light can emitted parallel to the optical axis.

[0035]The lens in this embodiment al...

Embodiment 2

[0044] Embodiment 2 LED collimating lens with split design

[0045] The lens described in the second embodiment is designed and manufactured separately from optical quartz material and reflective material. Such as Figure 5 As shown, wherein, the reflective material is used to make the total reflection free-form surface 2; the optical quartz material is used to make the first free-form surface 1 and the second free-form surface 5. In the split design, the lens omits the connecting surface and the outgoing surface, so that the structure of the lens is much simpler than that of the first embodiment, and its manufacture is not as complicated as the lens in the first embodiment. In addition, as an alternative to the second embodiment, the lens portion with the first free-form surface 1 and the second free-form surface 5 and the LED light source 7 in the second embodiment may also be packaged integrally.

[0046] As a further improvement of Embodiments 1 and 2, the first free-for...

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Abstract

The invention discloses a lens for collimation of ultraviolet LEDs, which comprises a first free-form surface and a total reflection free-form surface, the first free-form surface and the total reflection free-form surface are rotators with the optical axis as the axis, and the total reflection The opening of the free-form surface increases gradually along the exit direction of the optical axis; the first free-form surface is arranged inside the total reflection free-form surface, and the first free-form surface protrudes along the optical axis direction; the first free-form surface is used for The light near the optical axis is refracted so that the light can be emitted parallel to the optical axis; the total reflection free-form surface is used to reflect the light far from the optical axis so that the light can be emitted parallel to the optical axis. The lens for ultraviolet LED collimation of the present invention has high collimation degree and long service life, and is very suitable for collimation of ultraviolet LED, and solves the problem that the previous LED collimation lens has complex structure and low collimation degree, and is not suitable for ultraviolet LED alignment and other issues.

Description

technical field [0001] The invention relates to the field of semiconductor lighting technology and application technology, in particular to a collimating lens capable of collimating light emitted by an LED light source and making the collimating angle less than 2 degrees. Background technique [0002] In recent years, with the development of semiconductor chips and packaging technology, the light efficiency and life of ultraviolet LEDs have been continuously improved, becoming a new generation of ultraviolet light sources. Traditional ultraviolet mercury lamps have high temperature during use, huge power consumption, and short service life. They are likely to cause large environmental pollution during production and processing. Although the industry has been committed to improving them, due to the original hardware Limitations have always been difficult to break through. Ultraviolet LEDs are widely used in various fields because of their advantages such as constant light in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V5/04
Inventor 孙秀辉尹韶云杜春雷史浩飞
Owner CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
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