Unlock instant, AI-driven research and patent intelligence for your innovation.

A high-transmittance optical glass with deep cut-off of visible light

A visible light and light-transmitting technology, applied in the field of optical glass, can solve problems such as insufficient cut-off depth, unreachable transmittance, and impact on the accuracy of visible light inspection, so as to solve environmental pollution problems, improve chemical stability, and benefit environmental protection.

Active Publication Date: 2021-12-03
GUOGUANG OPTICAL GLASS CO LTD
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The transmittance in the 334nm band is not high, generally around 80%; the current peak transmittance of optical glass in the 334nm band is only about 80%, and the current practical application requirements need to reach more than 85%
[0005] 2. In the visible light band, especially 450nm-650nm, the average transmittance is about 0.1%, and the cut-off depth OD=3. Although the cut-off depth can meet the current mainstream medical equipment testing requirements, due to the insufficient cut-off depth, the transmission of visible light is not suitable for inspection. The accuracy is affected, so it still cannot meet the occasions with high detection accuracy requirements
The invention can transmit long-wave ultraviolet rays with a wavelength of 320nm-400nm, and its maximum ultraviolet transmittance reaches 79.1%; the transmittance cannot reach more than 85% of market demand, and the visible light cutoff is not ideal

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
  • A high-transmittance optical glass with deep cut-off of visible light
  • A high-transmittance optical glass with deep cut-off of visible light
  • A high-transmittance optical glass with deep cut-off of visible light

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Raw materials: 30 parts of quartz sand, 13 parts of boric acid, 30 parts of phosphorus pentoxide, 4 parts of aluminum oxide, 8 parts of sodium carbonate, 4 parts of potassium carbonate, 3 parts of calcium carbonate, 1 part of cobalt oxide, 3.3 parts of nickel oxide, aluminum hydride Lithium 1 part;

[0049] After the above raw materials are mixed evenly, the feeding temperature is 1150°C, and the feeding is added after the material is completely melted, and the feeding is done 10 times in total, and the interval between each feeding is about 30 minutes; after the feeding is completed, the temperature is raised to 1230°C, and the heating time is 1.5 hours; the melting temperature is 1250°C for 4 hours. The temperature is lowered from 1250°C to 1120°C, the cooling time is 1 hour, and the discharge temperature is about 1100°C. Final annealing, cooling at 580°C, 5°C per hour, and natural cooling at 300°C with power off, to obtain an optical glass with deep cut-off of visib...

Embodiment 2

[0052] Raw materials: 40 parts of quartz sand, 15 parts of boric acid, 20 parts of phosphorus pentoxide, 8 parts of aluminum oxide, 10 parts of sodium carbonate, 6 parts of potassium carbonate, 5 parts of calcium carbonate, 1.3 parts of cobalt oxide, 2 parts of nickel oxide, aluminum hydride Lithium 2 parts;

[0053] After the above raw materials are mixed evenly, the feeding temperature is 1150°C, and the feeding is added after the material is completely melted, and the feeding is done 10 times in total, and the interval between each feeding is about 30 minutes; after the feeding is completed, the temperature is raised to 1230°C, and the heating time is 1.5 hours; the melting temperature is 1250°C for 4 hours. Cool down from 1250°C to 1120°C, the cooling time is 1 hour, and the discharge temperature is about 1100°C. Final annealing, cooling at 580°C, 5°C per hour, and natural cooling at 300°C with power off, to obtain an optical glass with deep cut-off of visible light and h...

Embodiment 3

[0056] Raw materials: 35 parts of quartz sand, 13 parts of boric acid, 26 parts of phosphorus pentoxide, 7 parts of aluminum oxide, 9 parts of sodium carbonate, 5 parts of potassium carbonate, 4 parts of calcium carbonate, 1.2 parts of cobalt oxide, 3 parts of nickel oxide, aluminum hydride Lithium 1.2 parts;

[0057] After the above raw materials are mixed evenly, the feeding temperature is 1150°C, and the feeding is added after the material is completely melted, and the feeding is done 10 times in total, and the interval between each feeding is about 30 minutes; after the feeding is completed, the temperature is raised to 1230°C, and the heating time is 1.5 hours; the melting temperature is 1250°C for 4 hours. Cool down from 1250°C to 1120°C, the cooling time is 1 hour, and the discharge temperature is about 1100°C. Final annealing, cooling at 580°C, 5°C per hour, and natural cooling at 300°C with power off, to obtain an optical glass with deep cut-off of visible light and ...

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
transmittivityaaaaaaaaaa
refractive indexaaaaaaaaaa
Login to View More

Abstract

A high-transmittance optical glass with a deep cut-off of visible light provided by the present invention comprises the following components in parts by weight: 30-40 parts of quartz sand, 13-15 parts of boric acid, 20-30 parts of phosphorus pentoxide, 4-40 parts of aluminum oxide 8 parts, 8-10 parts of sodium carbonate, 4-6 parts of potassium carbonate, 3-5 parts of calcium carbonate, 1-1.3 parts of coloring agent A, 2-3.3 parts of coloring agent B, 1-2 parts of reducing agent. The high-transmittance optical glass with deep cut-off of visible light of the present invention has a transmittance greater than 85% in the 334nm band, and an average transmittance of 450nm-650nm <0.001%, realizing deep cut-off of visible light.

Description

technical field [0001] The invention relates to glass used for medical biological enzyme calibration equipment, in particular to an optical glass with deep cut-off of visible light and high transmittance in 334nm band. Background technique [0002] Visible light cut-off glass has a wide range of applications in medical testing equipment. In different ultraviolet bands (254nm; 313nm; 334nm, 365nm), the spectral characteristics of optical glass require high transmittance while cutting off the visible light band. [0003] At present, domestic similar optical glass has two defects: [0004] 1. The transmittance in the 334nm band is not high, generally around 80%. At present, the peak transmittance of optical glass in the 334nm band is only about 80%, and the current practical application requirements need to reach more than 85%. [0005] 2. In the visible light band, especially 450nm-650nm, the average transmittance is about 0.1%, and the cut-off depth OD=3. Although the cut-o...

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 Patents(China)
IPC IPC(8): C03C6/04C03C1/00C03C1/04
Inventor 沈杰
Owner GUOGUANG OPTICAL GLASS CO LTD