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Free-form optical reflector for LED (light-emitting diode) motorcycle low beam

A technology of optical reflection and LED light source, applied in reflectors, light sources, motor vehicles, etc., to achieve high light energy utilization, improve optical accuracy and work efficiency, and small size

Active Publication Date: 2012-11-14
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is still challenging to apply LEDs to motorcycle headlights. In order to meet the light distribution standard and improve system performance, it is necessary to carry out secondary optical design for LEDs to optimize the headlight lighting system.

Method used

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  • Free-form optical reflector for LED (light-emitting diode) motorcycle low beam
  • Free-form optical reflector for LED (light-emitting diode) motorcycle low beam
  • Free-form optical reflector for LED (light-emitting diode) motorcycle low beam

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Embodiment Construction

[0047] The above content has fully described the present invention, and the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] The invention discloses an optical reflector for low beam light of LED motorcycle lights. The reflector 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. . For low beams, the national standard requires that a light and dark cut-off line with the horizontal line on the left and the horizontal line on the right be 15° upward on the lighting surface 25m in front of the headlights, and the illuminance values ​​of different areas on the lighting surface are also made correspondingly. Provisions. According to the light type and illuminance distribution required by the national stan...

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Abstract

The invention discloses a free-form optical reflector for an LED (light-emitting diode) motorcycle low beam, wherein an internal surface of the reflector is a free-form surface to form an optical reflecting surface; the bottom surface of the reflector is provided with an opening for installation of an LED; one end rightly facing the bottom surface is a light exit port of the reflector; the majority of light emitted by the LED light source is reflected by the internal surface of the reflector and then is emergent to an illuminating plane, and the other light is directly emergent to the illuminating plane. The reflector is divided into an upper part and a lower part; the free-form surface at the upper part of the internal surface of the reflector is mainly used for reflecting the light above a horizontal plane to the illuminating plane below the horizontal plane; the free-form surface at the lower part of the internal surface of the reflector is mainly used for gathering diffused light below the horizontal plane to the illuminating plane below the horizontal plane. The free-form optical reflector for the LED motorcycle low beam has the characteristics of simple structure, convenience in installation and high utilization rate of light energy; light direction can be effectively controlled and the glare effect can be inhibited; and the free-form optical reflector for the LED motorcycle low beam meets the light distribution requirements in GB5948-1998.

Description

technical field [0001] The invention relates to the technical field of LED motorcycle lamp lighting, in particular to a free-form optical reflector used for LED motorcycle low beam lamps. Background technique [0002] Light-emitting diodes (LEDs) have many advantages such as energy saving, high efficiency and environmental protection, and have been widely used in the field of lighting in recent years. LED is the fourth-generation vehicle light source, which has many advantages such as small size, low energy consumption, fast response, and long life. With the continuous advancement of LED technology, the application of LED in automotive lighting is becoming more and more common. However, it is still challenging to apply LEDs to motorcycle headlights. In order to meet the light distribution standards and improve system performance, it is necessary to carry out secondary optical design for LEDs to optimize the headlight lighting system. [0003] Whether the light distribution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V7/04F21V7/09F21Y101/02F21W101/027F21W101/10F21W107/17
Inventor 王洪陈赞吉游瑜婷杨洁
Owner SOUTH CHINA UNIV OF TECH
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