Preparation and application of reflecting type fluorescent glass light conversion assembly

A fluorescent glass and light conversion technology is applied in the field of preparation of reflective fluorescent glass light conversion components to achieve high reflection, improve extraction efficiency, and solve the effects of luminous loss

Inactive Publication Date: 2016-06-22

NANJING UNIV

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AI-Extracted Technical Summary

Problems solved by technology

Especially on the glass substrate, a reflective coating is prepared by mixing a wide-bandgap reflector powder and a low-melting glass powder, and then a fluorescent glass coating is prepared on it, and then the reflective coating and the fluorescent glass are coated with a heat treatment process. The layer is integrated with the glass substrate to m...

Abstract

A reflective fluorescent glass light conversion component, including three layers of materials: a glass substrate, a reflector glass coating and a fluorescent glass coating; the reflector glass coating is the powder of glass B with a mass ratio of 150:1 to 100:150 Composition with reflector C, fluorescent glass coating The glass coating containing phosphor D is sintered on the glass substrate, and the thickness of the reflector glass coating and the fluorescent glass coating is 0.3-3mm respectively. The reflector C is an insulator with a large optical gap, and its corresponding optical absorption wavelength is below 420 nanometers; the color of the external light of the reflector C is white. The preparation steps are as follows: firstly, a reflective coating is prepared by mixing wide-bandgap reflector powder and low-melting glass powder on the glass substrate, and then a layer of fluorescent glass coating is prepared on the glass substrate, and then the reflective coating and the The fluorescent glass coating is integrated into the glass substrate.

Technology Topic

FluorescenceBand gap +6

Image

Examples

Experimental program(5)

Example Embodiment

[0035] Example 1. To figure 1 The manufacturing method of the reflective fluorescent glass light conversion module will be described in detail.

[0036] The glass substrate A is ordinary soda lime glass with a thickness of 0.5 mm, and its refractive index at a wavelength of 460 nm is about 1.52. The glass transition temperature is 570℃, and the softening temperature is 620℃;

[0037] Glass B is a low-melting phosphate glass, the component contains P 2 O 5 : 41%, ZnO: 34%, B 2 O 3 : 19%, (Li 2 O3%+Na 2 O1.5%+K 2 O1.5%): 6%. The refractive index of the glass at a wavelength of 460 nm is about 1.49, the glass transition temperature is 480°C, and the softening temperature is 526°C;

[0038] Reflective 3 is BaSO 4 , Its particle size distribution d 50 Is 50 microns;

[0039] Phosphor 5 is YAG yellow-green phosphor with particle size distribution d 50 Is 12 microns.

[0040] Combine 20 grams of glass B powder with BaSO 4 10 grams of powder and 4 grams of organic liquid (a mixture of terpineol and butyral resin, mass ratio of 6:1) are mixed to obtain a slurry.

[0041] A screen printer is used to uniformly coat the above-mentioned slurry on the cleaned glass A substrate. The thickness of the coating slurry is controlled by adjusting the distance from the screen to the glass substrate. The distance from the screen to the glass substrate is 0.4 mm.

[0042] The glass plate coated with the slurry was dried at 150°C for 1 hour, and then first cooled to room temperature. It takes 1 hour to heat up to 410°C for 1 hour, then quickly heat up to 550°C for 1 hour in 26 minutes, and then take 2 hours to cool to room temperature. In this way, the reflective agent BaSO is obtained on the glass substrate A 4 The glass B coating.

[0043] 20 grams of glass B powder and 4.1 grams of YAG yellow phosphor powder were mixed with 4 g of organic liquid (a mixture of terpineol and butyral resin, with a mass ratio of 6:1) to obtain slurry.

[0044] Use a screen printer to uniformly coat the above-mentioned paste on the BaSO containing reflector 4 On the glass B coating.

[0045] The glass plate A coated with the slurry was dried at 150°C for 1 hour, and then first cooled to room temperature. It takes 1 hour to heat up to 410°C for 1 hour, then quickly heat up to 550°C for 1 hour in 20 minutes, and then take 2 hours to cool to room temperature. In this way, a reflective fluorescent glass light conversion assembly is obtained on the glass substrate A.

Example Embodiment

[0046] Example 2.

[0047] The difference between Embodiment 2 and Embodiment 1 is that the phosphor 5 is a mixture of green phosphor and red phosphor.

Example Embodiment

[0048] Example 3. To figure 2 Example 3 will be described in detail.

[0049] The blue laser light source array 6 emits blue light 7 and 8 to excite the green phosphor particles in the fluorescent glass coating 4, and emits a green light 9, which is collected by the photomechanical system 12; the blue light 8 excites the fluorescent glass coating 4 The red phosphor particles emit red light 10, and the red light 10 is reflected at the interface between the fluorescent glass coating and the reflective glass coating, and finally emitted as the light 11 and collected by the optical machine system 12; the blue light 13 is incident on the fluorescent glass coating The interface between the layer 4 and the air is reflected, and the light 14 is collected by the optomechanical system 12.

PUM

Property	Measurement	Unit
Thickness	0.5	mm
Glass transition temperature	570.0	°C
Softening temperature	620.0	°C

Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

increase reflection
Improve light collection efficiency

Preparation and application of reflecting type fluorescent glass light conversion assembly

A fluorescent glass and light conversion technology is applied in the field of preparation of reflective fluorescent glass light conversion components to achieve high reflection, improve extraction efficiency, and solve the effects of luminous loss

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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