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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 manufacture a reflective fluorescent glass light conversion component to effectively solve the defects of the phosphor powder silica gel mixed coating in the traditional fluorescent color wheel, and solve the luminous loss that occurs in the transmissive fluorescent glass coating, Further improving the extraction efficiency of light in the color wheel

Method used

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  • Preparation and application of reflecting type fluorescent glass light conversion assembly
  • Preparation and application of reflecting type fluorescent glass light conversion assembly
  • Preparation and application of reflecting type fluorescent glass light conversion assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1. With figure 1 The manufacturing method of the reflective fluorescent glass light conversion component is described in detail.

[0036]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°C, and the softening temperature is 620°C;

[0037] Glass B is a low-melting phosphate glass whose components contain P 2 o 5 : 41%, ZnO: 34%, B 2 o 3 : 19%, (Li 2 O3%+Na 2 O1.5%+K 2 (01.5%): 6%. The glass has a refractive index of about 1.49 at a wavelength of 460 nanometers, a glass transition temperature of 480°C, and a softening temperature of 526°C;

[0038] Reflector 3 is BaSO 4 , its particle size distribution d 50 is 50 microns;

[0039] Phosphor 5 is YAG yellow-green phosphor, and its particle size distribution is d 50 is 12 microns.

[0040] Mix 20 g of Glass B powder with BaSO 4 Add 10 grams of powder to 4 grams of organic li...

Embodiment 2

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

Embodiment 3

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

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

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Abstract

A reflecting type fluorescent glass light conversion assembly comprises a glass substrate, a reflecting agent glass coating and a fluorescent glass coating, wherein the reflecting agent glass coating includes glass B powder and reflecting agent C according to the mass ratio of 150:1 to 100:150, a glass coating, containing a fluorescent body D, of the fluorescent glass coating is calcined on the glass substrate, and the thicknesses of the reflecting agent glass coating and the fluorescent glass coating each range from 0.3 mm to 3 mm.The reflecting agent C is an insulating body, has large optical energy band gaps and has the corresponding optical absorption wavelength of 420 nanometers or below.The reflecting agent C has a white appearance color.The assembly is prepared through the steps of mixing wide-band-gap reflecting agent powder and low-melting-point glass powder on the glass substrate to prepare a reflecting coating, then preparing the fluorescent glass coating on the reflecting coating, and fusing the reflecting coating, the fluorescent glass coating and the glass substrate into a whole through a thermal treatment process.

Description

technical field [0001] The invention relates to a preparation method and application of a reflective fluorescent glass light conversion component. Background technique [0002] As a kind of laser display technology, laser phosphor display technology (LPD: Laser Phosphor Display) has been widely used. The core of the LPD display technology system is the laser optical engine. The laser optical engine consists of three parts: laser light source, optical machine system and projection system. The LPD laser light source is to use the blue light beam emitted by the blue light semiconductor laser array to irradiate the red and green phosphors on the fluorescent color wheel, respectively to excite red light and green light, and then use the original blue light of the light source to form the three primary colors of red, green and blue. beam. The existing fluorescent color wheel structure mostly adopts a reflective structure, which uses a mixture of phosphor powder and silica gel co...

Claims

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Application Information

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IPC IPC(8): C03C17/34
CPCC03C17/002C03C17/347
Inventor 殷江陆建新
Owner NANJING UNIV
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