# US 11,307,336 B2 · Glass plate with dielectric multilayer film and manufacturing method thereof

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- Number: US 11,307,336 B2
- Document ID: US11307336B2
- Status: Granted
- Kind: B2
- Application number: 16/468,673
- Filed: 2017-12-11
- Published: 2019-11-14
- Granted: 2022-04-19
- Earliest claimed: 2016-12-15
- Assignees: Nippon Electric Glass Co., Ltd.
- Applicants: Nippon Electric Glass Co., Ltd.
- Inventors: Keiichi Sahara; Tsutomu Imamura; Yasutaka Tanabe
- Web page: https://patentgrep.com/patent/US11307336B2

## CPC

- G02B 5/28: Interference filters
- G02B 5/282: {reflecting for infrared and transparent for visible light, e.g. heat reflectors, laser protection}
- B32B 7/025: Electric or magnetic properties
- C03C 17/34: with at least two coatings having different compositions (C03C17/44 takes precedence)
- G02B 5/26: Reflecting filters (G02B5/28 takes precedence)
- G02B 5/285: {comprising deposited thin solid films (G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361)}
- B32B 17/10036: {comprising two outer glass sheets}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- 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

## Abstract

A dielectric multilayer film-incorporated glass plate is disclosed that includes a glass plate and a dielectric multilayer film. The glass plate includes a corner surface located between at least one main surface and a side surface. The dielectric multilayer film includes a main surface covering portion that covers the main surface of the glass plate and a corner surface covering portion that covers the corner surface of the glass plate.

## Claims

### Claim 1

A dielectric multilayer film-incorporated glass plate comprising:
a glass plate; and
a dielectric multilayer film, wherein
the glass plate includes a corner surface located between at least one main surface and a side surface, and
the dielectric multilayer film includes a main surface covering portion that covers the main surface of the glass plate and a corner surface covering portion that covers the corner surface of the glass plate,
wherein the main surface covering portion and the corner surface covering portion of the dielectric multilayer film are formed continuously and homogeneously by a plurality of layers, and
when the main surface covering portion has a thickness corresponding to a relative value of 100, the corner surface covering portion has a thickness of greater than or equal to a relative value of 50 and less than or equal to a relative value of 95.

### Claim 2 (depends on 1)

The dielectric multilayer film-incorporated glass plate according to claim 1, wherein
the main surface covering portion has an average reflectance of less than or equal to 2.0% in a visible spectrum at a wavelength greater than or equal to 400 nm and less than or equal to 780 nm, and
when the average reflectance of the main surface covering portion in the visible spectrum corresponds to a relative value of 100, the corner surface covering portion has an average reflectance of less than or equal to a relative value of 1500 in the visible spectrum.

### Claim 3 (depends on 1)

The dielectric multilayer film-incorporated glass plate according to claim 1, wherein the main surface covering portion has an average reflectance of greater than or equal to 70% in an infrared spectrum at a wavelength greater than or equal to 950 nm and less than or equal to 1100 nm.

### Claim 4 (depends on 1)

The dielectric multilayer film-incorporated glass plate according to claim 1 that is used as a cover member coupled in a state in which at least part of the corner surface covering portion is exposed.

### Claim 5 (depends on 1)

A method for manufacturing the dielectric multilayer film-incorporated glass plate according to claim 1, the method comprising:
obtaining the glass plate by forming the corner surface on a glass sheet; and
arranging the dielectric multilayer film on the main surface of the glass plate and the corner surface of the glass plate.