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Design method for reflection cup forming rectangular spots

A design method and rectangular spot technology, applied in the field of LED lighting, can solve problems such as unsuitable for use

Inactive Publication Date: 2016-03-02
GUANGDONG RAYTON INTELLIGENT OPTO CO LTD
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  • Abstract
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Problems solved by technology

In addition, Wang Hong et al. used the energy grid division method to iteratively calculate the surface shape of the reflector, but what they achieved was a symmetrical rectangular light distribution, which is not suitable for use on roads with large road widths, such as two-way six-lane roads. In this case, it is necessary to use an asymmetrical rectangular light distribution to ensure that all areas on the road are illuminated

Method used

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  • Design method for reflection cup forming rectangular spots
  • Design method for reflection cup forming rectangular spots
  • Design method for reflection cup forming rectangular spots

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0032] The design of the reflector involves two parts of energy distribution, one part is the energy directly emitted from the lamp, which is called direct energy E z , the other part is the energy reflected from the lamp by the reflector, called the reflected energy E f , the part of the light emitted directly irradiates the target surface to form an initial rectangular lighting area, and the function of the reflector is to reflect the rest of the energy into this initial lighting area, so that the two parts of energy are superimposed to form a uniform lighting area.

[0033] The main design method of the reflector cup of the present invention comprises the following steps:

[0034] (1) if figure 1 is the spatial coordinate system of the LED light source, with the LED light source as the coordinate origin, and the θ angle is the angle between the ...

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Abstract

The invention discloses a design method for a reflection cup forming rectangular spots. The method comprises: according to a non-imaging optical theory, establishing an energy topological relation between a spot light source and an illuminated surface; and obtaining an extended light source-oriented reflector forming uniform non-symmetric rectangular spots with a proper feedback optimization design method. Through optical simulation, energy of the light source is basically limited in a rectangular region of 20mx12m, non-symmetric light distribution is realized, transverse illumination uniformity reaches 85%, longitudinal illumination uniformity reaches 80%, and road illumination requirements are met; and actual test verification simulation results of mold opening prove the feasibility of the design scheme and the practicality of the reflector in road lamps.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to a design method of a reflective cup used in street lamps for forming rectangular light spots. Background technique [0002] The light distribution scheme of LED street lamps is divided into two types: lenses and reflectors. Luo Yi and Liu Sheng respectively proposed a street lamp lens design method for LED extended light source, which can produce a uniform rectangular spot effect on the road surface, but considering that the lens has two light-transmitting surfaces and a certain thickness, for any of them A curved surface, if there is a slight deviation in the design or manufacturing process of the curved surface, or if there are impurities in the lens, it will have a great impact on the refraction of light and energy distribution, and in practical applications, the lens has a high absorption rate of light and therefore It causes energy loss, which is not conducive to energy saving. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50F21V7/04F21W131/103F21Y115/10
CPCF21V7/04F21W2131/103G06F30/367G06F2111/10G06F2119/08
Inventor 闫国栋陈焕杰
Owner GUANGDONG RAYTON INTELLIGENT OPTO CO LTD
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