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Full-spectrum laser device and LED device

A laser device, full-spectrum technology, applied in the field of white light lighting, can solve the problems of increasing the complexity of the production process, the heat-resistant thermal conductivity of silica gel, and the heat dissipation is not fast enough.

Pending Publication Date: 2020-04-10
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For example, the "high-power remote phosphor powder type white light LED heat dissipation package" disclosed in Chinese patent document CN 109585632A has a package structure consisting of a substrate, a chip, a heat conduction ring, a condenser lens, a support lens and a phosphor powder structure layer. The heat conduction ring increases the heat dissipation performance of the chip, but this method increases the complexity of the production process and is difficult to achieve mass production
[0005] Another example is "a new type of high-power white LED fan heat structure" disclosed in Chinese patent document CN 208336277U, which uses heat-dissipating silica gel and a heat-dissipating substrate to dissipate the heat generated by the LED chip, but the silica gel itself is not heat-resistant and has poor thermal conductivity. It may happen that the heat is not dissipated fast enough to cause the heat of the LED chip to accumulate in the resin, thereby reducing the luminous performance of the LED

Method used

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  • Full-spectrum laser device and LED device
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  • Full-spectrum laser device and LED device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of full-spectrum laser device and LED device, see Figure 1-3 , the structure is a blue laser 1, beam expander 2, green fluorescent glass 3, red fluorescent glass 4 and yellow fluorescent glass 5 four-layer structure on the same layer from bottom to top, and the green fluorescent glass 3 is along its thickness. direction is provided with a through hole, the red fluorescent glass 4 and yellow fluorescent glass 5 are arranged around the through hole on the upper surface of the green fluorescent glass 3, and the green fluorescent glass 3 is provided with the A beam expander 2, the blue laser 1 is arranged under the beam expander 2; the blue laser 1 emits blue light and expands the blue light beam through the 7-fold beam expander 2, and then uses this beam to excite the green fluorescent glass 3 emit a green light beam, and then excite the red fluorescent glass 4 and the yellow fluorescent glass 5 to emit a red light beam and a yellow light beam through the green lig...

Embodiment 2

[0042] On the basis of Example 1, the thickness of the red fluorescent glass 4, green fluorescent glass 3, and yellow fluorescent glass 5 is replaced by 1.5mm, and the red fluorescent glass 4, green fluorescent glass 3, and yellow fluorescent glass 5 all have upper bottom surfaces , bottom surface, surface roughness of the upper bottom surface and the lower bottom surface are all Ra0.4, and the ratio of the upper bottom area of ​​green fluorescent glass 3 to red fluorescent glass 4 and yellow fluorescent glass 5 is green fluorescent glass 3 bottom area:red fluorescent glass 4 Bottom area: the bottom area of ​​yellow fluorescent glass 5 is 4:2:2, the ratio of the bottom area of ​​green fluorescent glass 3 to red fluorescent glass 4, and yellow fluorescent glass 5 is the bottom area of ​​green fluorescent glass 3: the bottom area of ​​red fluorescent glass 4 : yellow fluorescent glass 5 lower bottom area 4:2:2.

[0043]Further, the green fluorescent glass 3 is doped with Mn 2+ ...

Embodiment 3

[0049] On the basis of Example 1, the thickness of the red fluorescent glass 4, green fluorescent glass 3, and yellow fluorescent glass 5 is replaced by 3.5mm, and the red fluorescent glass 4, green fluorescent glass 3, and yellow fluorescent glass 5 all have upper bottom surfaces , lower bottom surface, upper bottom surface, and lower bottom surface have a surface roughness of Ra0.4, and the ratio of the bottom area of ​​green fluorescent glass 3 to red fluorescent glass 4 and yellow fluorescent glass 5 is green fluorescent glass 3 upper bottom area: red fluorescent glass 4 Upper bottom area: yellow fluorescent glass 5 upper bottom area 4:2:2, green fluorescent glass 3 and red fluorescent glass 4, yellow fluorescent glass 5 lower bottom area ratio is green fluorescent glass 3 lower bottom area: red fluorescent glass 4 Bottom area: yellow fluorescent glass 5 lower bottom area 4:2:2.

[0050] The green fluorescent glass 3 is doped with Mn 2+ zinc silicate green fluorescent mat...

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Abstract

The invention discloses a full-spectrum laser device with a stroke RGB structure. The full-spectrum laser device has a four layer structure composed of a blue laser, a beam expander, a green phosphor,a red phosphor and a yellow phosphor from bottom to top. The blue laser emits blue light, the blue light beam is expanded by the beam expander, the green phosphor is excited by the light beam to emita green light beam, the red phosphor and the yellow phosphor are excited by the green light beam, and finally, the blue light, the red light, the green light and the yellow light are mixed into whitelight. The yellow phosphor is mixed to improve the display index of the synthetic light, and the laser is used as an excitation light source to meet the requirements of industrial lighting.

Description

technical field [0001] The invention belongs to the field of white light illumination and provides a full-spectrum synthesis technology, in particular to a full-spectrum laser device and an LED device. Background technique [0002] As the fourth-generation lighting source, LED has the advantages of small size, long life, and low power consumption, and quickly occupies the lighting market. At present, the most mature type of white LED is to use blue light chips coated with yellow phosphor to make blue light and yellow light Mixed into white light, but this method directly leads to low light efficiency, low display index, and uneven spatial distribution of color temperature. However, when LED is used in the lighting market, people have certain requirements for the quality of the light source. [0003] At present, people have proposed a variety of LED color mixing schemes to solve the problems of the above methods to achieve adjustable color temperature and improve display inde...

Claims

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Application Information

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IPC IPC(8): F21K9/64F21K9/69
CPCF21K9/64F21K9/69
Inventor 万文昌王江黄渊博石明明邹军
Owner SHANGHAI INST OF TECH