Free-form optical lens for LED (light-emitting diode) motorcycle high beam

An optical lens, LED light source technology, applied in the direction of light sources, motor vehicles, road vehicles, etc., can solve the problems of complex optical design, and achieve the effects of high optical precision, small size, and low glare effect

CN102777856AInactive Publication Date: 2012-11-14SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2012-11-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a free-form optical lens for an LED (light-emitting diode) motorcycle high beam, wherein an internal side of the lens is a cylindrical cavity; the bottom of the cylindrical cavity is an opening; an LED enters the cavity via the opening and is installed in the cavity; the lens comprises an incident plane and an emergent plane; the internal side of the lens is the incident plane which consists of a plane on the top of the cavity and a columnar plane of a cavity wall; a free-form surface on the top of an external side of the lens and a circular ring plane form the emergent plane; a lateral side on an external side of the lens is a totally-reflected free-form surface. According to the free-form optical lens for the LED motorcycle high beam, light distribution can be carried out without using other auxiliary devices, so that the loss is reduced, and the utilization rate of optical energy is improved; the free-form optical lens for the LED motorcycle high beam has the characteristics of simple structure, small volume and low glare effect and meets the light distribution requirements of GB5948-1998.
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Description

technical field

[0001] The invention relates to the technical field of lighting for LED motorcycle lights, in particular to a free-form optical lens used for high beam lights of LED motorcycles. Background technique

[0002] Light-emitting diodes (LEDs) have many advantages such as energy saving, high efficiency, and environmental protection. They are the fourth generation of automotive light sources after incandescent lamps, tungsten halogen lamps and high-intensity gas discharge lamps. In recent years, with the continuous advancement of LED technology and popularization of applications, the application of LEDs in automotive lighting has become more and more common. However, when LEDs are applied to headlights, they also face complex optical designs.

[0003] In the design of motorcycle headlights, the national standard GB5948-1998 stipulates the light distribution requirements of motorcycle headlights. For high beams, the national standard requires the illuminance of the ...

Examples

Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] The invention discloses a high-beam optical lens for LED motorcycle lights. The lens has small volume, low glare effect, high utilization rate of light energy, convenient installation, and can produce light pattern and illuminance distribution meeting the light distribution requirements of the national standard GB5948-1998.

[0037]In this implementation, a free-form optical lens used for high beams of LED motorcycles is made of transparent materials, which can be PC, PMMA or optical glass. The inner side of the lens is a cylindrical cavity, and the LED needs to be installed in the cavity for lighting. The lens includes an incident surface and an outgoing surface. The inner side of the lens is the incident surface, that is, the incident surface is composed of the plane at the top of the cavity and the cylindrical surface of th...