Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ultraviolet response type rare earth light conversion film and application thereof

A light conversion film, rare earth technology, applied in luminescent materials, chemical instruments and methods, radiation control devices, etc., can solve the problems of difficult disassembly and maintenance, hindering popular application, high price, etc., and achieves simplified operation, wide application range, and reduced The effect of instrument cost

Inactive Publication Date: 2014-04-23
GUANGDONG POLY OPTOELECTRONICS
View PDF6 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of camera system is expensive, bulky, complex in structure, and difficult to disassemble and repair, which greatly hinders its popularization and application.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultraviolet response type rare earth light conversion film and application thereof
  • Ultraviolet response type rare earth light conversion film and application thereof
  • Ultraviolet response type rare earth light conversion film and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A method for preparing an ultraviolet-responsive rare earth photoconversion film device, the steps are as follows:

[0059] 1. Preparation of rare earth complexes: mix TbCl with a ratio of 1:3 3 Mix with 5-sulfosalicylic acid (Ssal), then add a mixture of dimethyl sulfoxide and water (volume ratio 1:10), mix well, add KOH aqueous solution dropwise under stirring until pH=5~8 . The solution is heated in a water bath at 60-80° C., and the solvent is evaporated to obtain a Tb-Ssal complex fluorescent material.

[0060] 2. Preparation of UV-responsive rare earth light conversion film device:

[0061] (1) Dissolve the Tb-Ssal complex in water to make a solution with a concentration of 20%, add an equal volume of polyvinyl alcohol (PVA) aqueous solution with a concentration of 1%, mix well, and then add 2mL of this mixture dropwise Spin coating on a quartz plate to form a film, the spin coating speed is 700-1000 rpm, and the spin coating time is 40-60 seconds. Then place ...

Embodiment 2

[0064] Application of UV Responsive Rare Earth Light Conversion Film:

[0065] 1. Installation of light conversion film devices

[0066] Disassemble a Canon digital camera (model: 500D), take out the CMOS, stick the light conversion film device on the CMOS surface and fix its position so that the light conversion film completely covers the CMOS surface. The installation position of the light conversion film device in the camera is as follows: Figure 4 shown. Install the CMOS with the light conversion film device installed back into the camera.

[0067] 2. The use of UV imaging system and fingerprint shooting

[0068] Irradiate the substrate printed with fingerprints with an LED ultraviolet lamp with a wavelength of 365nm, aim the Canon 500D digital camera installed with a light conversion film device and a 365nm ultraviolet filter at the fingerprints printed on the surface of the substrate, and adjust the focal length to make the fingerprint image clear , press the shutte...

Embodiment 3

[0070] A method for preparing an ultraviolet-responsive rare earth photoconversion film device, the steps are as follows:

[0071] 1. Preparation of rare earth complexes: mix TbCl with a ratio of 1:0.2:1.2 3 , GdCl 3 Mix with 5-sulfosalicylic acid (Ssal), then add a mixture of N,N-dimethylformamide and water (volume ratio 1:10), mix well, add KOH aqueous solution dropwise under stirring to pH =5~8. The solution is heated in a water bath at 60-80° C., and the solvent is evaporated to obtain a Tb-Gd-Ssal complex fluorescent material.

[0072] 2. Preparation of UV-responsive rare earth light conversion film device:

[0073] (1) Preparation of Tb-Gd-Ssal light conversion film

[0074] Dissolve the Tb-Gd-Ssal complex in water to make a solution with a concentration of 30%, then add 2mL of this solution dropwise onto a quartz plate, spin-coat to form a film, the spin-coating rate is 700-1000rpm, and the spin-coating time is 40 ~60 seconds. Then place the quartz sheet in an ove...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ultraviolet response type rare earth light conversion film and an application thereof. The rare earth light conversion film is a light conversion film which is composed of rare earth complexes or composed of rare earth complexes and high-transmittance film-forming materials and has the light wavelength change function. The film can be used to convert light in the ultraviolet region to the imaging device sensitive wave bands. The ultraviolet response type rare earth light conversion film of the invention can be used to effectively enhance the sensitivity of a silicon-based imaging device on the ultraviolet light, and improve the conversion ration from the ultraviolet region to the visible light region, and the ultraviolet response type rare earth light conversion film can be used in the ultraviolet imaging process to clearly display fingerprint images which are printed on a base material and cannot seen with eyes, and replace existing expensive ultraviolet intensifying tubes and large heavy auxiliary equipment used by cooperating with the ultraviolet intensifying tubes, so the ultraviolet response type rare earth light conversion film is an idea nondestructive field criminal investigation tool.

Description

technical field [0001] The present invention relates to a preparation method and application of an ultraviolet response rare earth light conversion film, in particular to a method applied to CCD (Charge Coupled Device, charge-coupled device) or CMOS (Complementary Metal-Oxide Semiconductor, additional metal oxide semiconductor component) An ultraviolet-responsive light-converting film on the surface of an object, a preparation method, and an application thereof. The light conversion film can be applied in ultraviolet imaging to capture fingerprint images printed on the surface of the substrate that are invisible to the naked eye, and is an ideal non-destructive on-site criminal investigation tool. Background technique [0002] The imprints of fingerprints are basically divided into three categories: latent sweat fingerprints, visible fingerprints and three-dimensional fingerprints. By far the most common are sweat latent fingerprints. Sweat latent fingerprints are formed b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/146C09K11/77
Inventor 朱艺敏李阳谢国威
Owner GUANGDONG POLY OPTOELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com