Nippon Sheet Glass Company, Limited

Hitachi, Ltd.

Cardinal Cg Company

Hidemi Nakai

Jun Kawaguchi

Takashi Muromachi

Hiroaki Kobayashi

Kenji Murata

Yasuhiko Uehara

Yasukazu Morita

Kazuhiro Doshita

Yoshiyuki Hanada

Michihisa Maeda

Heat-screening glass comprising a transparent glass substrate having consecutively thereon a heat-screening film, a first transparent protective film, and a second transparent protective film, the first transparent protective film comprising at least one member selected from the group consisting of silicon nitride, silicon dioxide, stannic oxide, oxynitride of silicon carbide, and oxynitride of tantalum carbide, and the second transparent protective film comprising at least one member selected from the group consisting of zirconium oxide, tantalum pentoxide, niobium oxide, zirconium oxynitride, tantalum oxynitride, and niobium oxynitride, and having a thickness of from 2 to 15 nm.

Heat-screening glass

In an automotive window glass having a pair transparent sheet glasses that are stuck to each other with a transparent resin film, the inner surface of one of the pair of sheet glasses, which faces the transparent resin film, is coated with a heat-ray intercepting film that is composed of any one of the following chemical formulas whose atomic ratios are defined.

Automotive window glass

A cathode-ray tube having a face plate which includes a phosphor layer provided at the inner surface side of a glass plate and an optical interference filter provided between the phosphor layer and the inner surface of the plate. The optical interference filter is constituted by high- and low-refractive index layers. The outermost layer of the optical interference filter in contact with the phosphor layer is an Al.sub.2 O.sub.3 layer or a ZrO.sub.2 layer having a physical thickness of 10 nm or more. The high-refractive index layer of the optical interference filter preferably consists of TiO.sub.2, and its low-refractive index layer preferably consists of Al.sub.2 O.sub.3.

Cathode-ray tube with interference filter

A heat ray screening glass according to this invention comprises a sheet glass, a first layer covered on the sheet glass and which is 55 nm to 70 nm thick and has a refractive index of 1.8 to 2.1 at a wavelength of 550 nm, a second layer covered on the first layer and consisting of a TiO.sub.2 film which is 30 nm to 55 nm thick and has a refractive index of 2.3 to 2.5 at a wavelength of 550 nm, and a third layer covered on the second layer and which is 45 nm to 60 nm thick and has a refractive index of 1.8 to 2.1 at a wavelength of 550 nm, wherein the change in color of the light transmitted through and reflected on the sheet ray screening glass is very little, and a comparative high visible light transmittance and a low visible light reflectivity in the glass can be obtained.

Heat ray screening glass

Growing community of inventors

Tsukuba, Japan

Hidemi Nakai