# US 10,865,948 B2 · Transparent sealing member

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,865,948 B2
- Document ID: US10865948B2
- Status: Granted
- Kind: B2
- Application number: 16/738,325
- Filed: 2020-01-09
- Published: 2020-05-14
- Granted: 2020-12-15
- Earliest claimed: 2017-07-11
- Assignees: NGK Insulators, Ltd.
- Applicants: NGK Insulators, Ltd.
- Inventors: Yoshio Kikuchi; Hiroyuki Shibata; Tatsuya Hishiki
- Web page: https://patentgrep.com/patent/US10865948B2

## CPC

- F21K 9/66: Details of globes or covers forming part of the light source
- C03C 3/06: with more than 90% silica by weight, e.g. quartz {(C03C3/045 takes precedence)}
- F21K 9/235: Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps (F21K9/238 takes precedence)
- H10H 20/855: Optical field-shaping means, e.g. lenses
- H10H 20/0363: {of optical field-shaping means}
- H10H 20/853: characterised by their shape
- H10H 20/882: {Scattering means (H10H20/82 takes precedence)}
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS

## Abstract

A transparent sealing member is provided with minute recesses at least in the surface of the member from which light from an optical element is emitted. The average width of the minute recesses is 0.1 μm to 2.0 μm, the average depth of the minute recesses is 5 nm to 50 nm, and the average frequency of occurrence of the minute recesses is 100000 to 3000000 recesses per 1 mm2.

## Claims

### Claim 1

A transparent sealing member adapted to be used with an optical component having at least one optical element, and a mounting substrate on which the optical element is mounted, and constituting, together with the mounting substrate, a package in which the optical element is accommodated;
wherein the transparent sealing member includes minute recesses on at least a surface from which light from the optical element is emitted;
an average width of the respective minute recesses is greater than or equal to 0.1 μm and less than or equal to 2.0 μm, and an average depth of the respective minute recesses is greater than or equal to 5 nm and less than or equal to 50 nm; and
an average existence frequency of the minute recesses is greater than or equal to 100,000 and less than or equal to 3 million per 1 mm2.

### Claim 2 (depends on 1)

The transparent sealing member according to claim 1, wherein a material of the transparent sealing member is quartz glass.

### Claim 3 (depends on 1)

The transparent sealing member according to claim 1, wherein a surface roughness Ra of at least a surface from which light from the optical element is emitted is 0.01 to 0.05 μm.

### Claim 4 (depends on 2)

The transparent sealing member according to claim 2, wherein a surface roughness Ra of at least a surface from which light from the optical element is emitted is 0.01 to 0.05 μm.