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An illumination uniformity optimization design method for a multi-chip LED module

A LED module, optimized design technology, applied in computing, instruments, electrical digital data processing, etc., can solve the problems of heavy workload, difficult to obtain, cumbersome operation, etc., and achieve the effect of saving production cost and saving measurement time

Active Publication Date: 2019-05-28
HOHAI UNIV CHANGZHOU
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In multi-chip LED modules, it is difficult to obtain a relatively uniform light output, and the light output has a "grainy" effect, which is difficult to apply to scenarios that require comparison of light uniformity
The traditional trial-and-error method has a large workload and cumbersome operation, and is not applicable in actual situations

Method used

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  • An illumination uniformity optimization design method for a multi-chip LED module
  • An illumination uniformity optimization design method for a multi-chip LED module
  • An illumination uniformity optimization design method for a multi-chip LED module

Examples

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Embodiment 1

[0053] A method for optimizing the uniformity of illumination of a multi-chip LED module, comprising the following steps:

[0054] Step 1: Determine the distance h between the LED module and the light-receiving surface, and the illuminance uniformity E required by the light-receiving surface B1 / E A1 That is, the minimum illuminance E B1 with maximum illuminance E A1 Ratio;

[0055] Determine the number of LED lamp beads installed on the LED module as n, the luminous intensity I of the LED lamp beads 0 , beam angle 2θ 1 / 2 , the LED lamp beads are installed on the LED module at equal intervals, and the distance between the LED lamp beads installed on the LED module is defined as d;

[0056] Step 2, calculate the distance d between the LED lamp beads;

[0057] Step 3, the distance d between the LED lamp beads is known, and the optical simulation software is used to perform optical simulation on the LED module to obtain the illuminance uniformity E B2 / E A2 , where E B2 ...

Embodiment 2

[0095]The difference from Embodiment 1 is that in step 1 in this embodiment, the number of LED lamp beads is n and the value range is [e, f]. Initially, the number of LED lamp beads is n and takes the maximum value f, according to Step 2 Know the distance d between the LED lamp beads, use the optical simulation software to perform optical simulation on the LED module, and obtain the illuminance uniformity E B2 / E A2 , where E B2 is the actual minimum illuminance and E A2 is the actual maximum illuminance;

[0096] Step 4, the simulated illuminance uniformity E B2 / E A2 and the required illuminance uniformity E of the light-receiving surface B1 / E A1 Do the difference to get the difference, if the difference between the two is within the set range c, end this step, get the number n of matching LED lamp beads and the distance between the LED lamp beads is d; if the difference is not within the range In c, the number n of LED lamp beads is reduced by g, and step 1 is repea...

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Abstract

The invention discloses an illumination uniformity optimization design method for a multi-chip LED module. The illumination uniformity optimization design method comprises the steps of calculating thedistance d between LED lamp beads; performing optical simulation on the LED module to obtain the simulation illumination uniformity EB2 / EA2; subtracting the simulated illumination uniformity EB2 / EA2from the illumination uniformity EB1 / EA1 required by the light receiving surface to obtain a difference value, wherein the difference value between the simulated illumination uniformity EB2 / EA2 and the illumination uniformity EB1 / EA1 is within a set range c, ending the design, and obtaining the number n of the LED lamp beads and the distance between the LED lamp beads as d; and if the difference value is not within the range c, increasing or decreasing the number n of the LED lamp beads, and repeating the step 1. According to the method, the chip arrangement mode of the multi-chip LED module with high light output uniformity is obtained through the numerical calculation and the optical simulation, the minimum number of the LED lamp beads can be adopted, and the measurement time in the prior art and the production cost of LEDs are saved.

Description

technical field [0001] The invention relates to an optimization design method for illumination uniformity of a multi-chip LED module group, belonging to the technical field of semiconductor lighting. Background technique [0002] Because of its unique charm, LED is not only successfully used in general lighting fields such as indoor lighting and street lighting, but also has continuous new breakthroughs in special lighting fields such as car lighting, medical lighting, plant lighting, and ultraviolet catalysis. The electro-optical conversion efficiency of LED is high, but the power of a single LED is small, and in many cases, a single LED cannot meet the actual optical power demand. Due to problems such as the current technological level, it is difficult to increase the power of LEDs without sacrificing light efficiency. At the same time, the increase in LED power will also put forward new requirements in terms of its heat resistance. [0003] The multi-chip LED module is c...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 樊嘉杰陈威谢超逸经周
Owner HOHAI UNIV CHANGZHOU
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