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Manufacturing method of LED light source imitating solar radiation spectrum

A technology of an LED light source and a manufacturing method, applied in the field of light sources, can solve the problems of uneven irradiation, large volume, low spectral matching degree, etc., and achieve the effects of easy splicing and high coupling efficiency

Inactive Publication Date: 2021-11-23
南通溢德行工业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) Metal halide lamp, which has the advantages of strong spectral continuity and long life, but its color temperature is low, about 4000K, and the spectral matching degree is low, the spectrum of the infrared part is strong, and the spectrum of the ultraviolet part is weak
[0005] (2) Xenon lamp, a high-intensity gas discharge lamp, has high spectral matching and high power, but requires high voltage to start, which is dangerous and unstable
[0008] In 2003, S.Kohraku and K.Kurokawa of Japan developed a sun-like device based on LED light sources, using LEDs of 4 different wavelengths, but the power of the LEDs at that time was too small, resulting in the total irradiance of the LED array being only 10W / m2, the irradiance non-uniformity is 3%. In 2006, they improved the related devices to increase the total irradiance to 100W / m2, and the irradiance non-uniformity was 5%.
In 2012, Anon Namin et al. used 4 kinds of monochromatic LEDs and RGB-LEDs to develop an LED imitation sunlight device with a total irradiance of 1000W / m2, but this device did not consider the problem of spectral matching
However, at present, the LED imitation sunlight device has a relatively large short-wavelength wavelength of the sunlight spectrum, the light mixing method is relatively simple, and the large-area radiation surface LED imitation sunlight device is relatively large.

Method used

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  • Manufacturing method of LED light source imitating solar radiation spectrum
  • Manufacturing method of LED light source imitating solar radiation spectrum
  • Manufacturing method of LED light source imitating solar radiation spectrum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Step 1. Make a 120W heat sink seat for LED light sources imitating solar radiation spectrum, air-cooled heat dissipation method, electric fan working voltage 12V, working current 1A.

[0031] Step 2. Select the LED light source with imitation solar radiation spectrum. The selection of LED light source with imitation solar radiation spectrum is the combination of 7 different wavelength LEDs with peak wavelengths of 850nm, 740nm, 465nm, 370nm, 340nm, 310nm and white light. Among them, the white LED provides light radiation energy for two bands of 400nm-520nm and 520nm-640nm.

[0032] Step 3: Make the LED light source imitating the solar radiation spectrum. The LED light source is distributed in the plane range of 50mm×50mm and welded on the aluminum substrate, which is fixed on the heat sink seat through thermal conductive glue.

[0033] Step 4: Create a solar radiation spectrum LED light source driving circuit, respectively control the working current of each lamp bead i...

Embodiment 2

[0038] Step 1. Make the radiator seat of the LED light source imitating the solar radiation spectrum. The radiator dissipates 150W, the temperature rises 20°C, and the heat dissipation method is circulating water cooling.

[0039] Step 2. Select the LED light source imitating the solar radiation spectrum, which is characterized in that the LED radiation peak wavelengths are: 850nm, 740nm, white light, 465nm, 370nm, 340nm and 310nm.

[0040]Step 3: Make LED light sources imitating the solar radiation spectrum. The LED light sources are distributed in a plane range of 35mm×35mm, welded on the metal-based printed circuit board, and the metal-based printed circuit board is fixed on the radiator seat.

[0041] Step 4: Create a solar radiation spectrum LED light source driving circuit, respectively control the working current and voltage of each lamp bead as shown in Table 2, so that the ratio of irradiance meets the requirements.

[0042] Table 2

[0043]

[0044] Step 5. Make ...

Embodiment 3

[0046] Step 1. Make a radiator seat for an LED light source imitating the solar radiation spectrum, which is characterized in that the radiator dissipates power of 150W, the temperature rise is small by 30°C, and the heat dissipation method is semiconductor refrigeration.

[0047] Step 2. Select the LED light source imitating the solar radiation spectrum, which is characterized in that the LED radiation peak wavelengths are: 850nm, 740nm, white light, 465nm, 370nm, 340nm and 310nm.

[0048] Step 3: Make LED light source with imitation solar radiation spectrum, which is characterized in that the LED light source is distributed in a square plane range of 50mm×50mm, welded on the aluminum substrate, and the aluminum substrate is fixed on the heat sink seat with thermal conductive glue.

[0049] Step 4: Use 4 pieces of front-coated reflectors with a thickness of 3mm to splice into a light mixing device with a size of 50mm×50mm×200mm, and place it outside the square LED light source...

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Abstract

The invention discloses a manufacturing method of an LED light source imitating solar radiation spectrum. LEDs are positioned in the square small intervals and directly enter the light mixing device, so that the coupling efficiency is high; a light mixing device is manufactured by adopting a high-reflection cavity, so that the short wavelength of the radiation spectrum of the sun-imitating LED light source can be expanded to be below 300nm; and a square light mixing cavity is large in light emitting angle and suitable for parabolic reflection to form parallel sunlight, and a frustum light mixing device is small in light emitting angle and suitable for a lens to form parallel sunlight. The emitted square light spots are easy to splice, and large-area light spots are formed in a building block mode.

Description

technical field [0001] The invention belongs to the field of light sources, and in particular relates to a method for manufacturing an LED light source imitating solar radiation spectrum. Background technique [0002] Sunlight is the most important light source in life, but since sunlight will change with time, weather and other factors, it is very important to simulate stable and efficient sunlight in many fields such as photovoltaics, meteorology, and space technology. Research prospects. The artificial sunlight device is an artificial light source that simulates sunlight. Compared with natural light, the simulated sunlight has great advantages. The optical parameters of natural light are seriously affected by the weather, and the light intensity value of sunlight cannot be artificially changed. In recent years, sunlight simulation has become a hot topic for researchers, and its research value and development potential are favored by people. [0003] With the advancemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V19/00F21V23/00F21V7/04F21Y115/10
CPCF21S8/006F21V19/001F21V23/005F21V7/04F21V7/041F21Y2115/10
Inventor 何元武刘玉芳
Owner 南通溢德行工业科技有限公司