Central Glass Company, Limited

Basf Se Corporation

Nippon Kayaku Co., Ltd

Kensuke Izutani

Kouichi Tanaka

Akira Matsumoto

Makoto Miyazaki

Atsushi Takamatsu

Hideyoshi Fujisawa

Masaaki Yonekura

Isao Nakamura

Hiroki Nakamura

Satoshi Nishiyama

Hiromichi Sakamoto

Naoya Mori

Masayoshi Furukawa

A light guide plate according to one embodiment of the present invention includes two glass sheets and a scattering layer sandwiched between and integrated with the glass sheets, wherein the scattering layer is a transparent resin film formed by stretching, and wherein the light guide plate has a haze of 0.2% or higher as determined according to JIS K 7136. The light guide plate is suitable for use in an edge-light-type surface light emitting apparatus. It is preferable that the scattering layer is a biaxially stretched transparent polyethylene terephthalate film. It is also preferable that the light guide plate further includes an adhesive resin layer between the scattering layer and the glass sheet.

Light guide plate, surface light emitting apparatus, and method for manufacturing light guide plate

The present invention has the objective of providing an infrared reflective film by means of which it is possible to achieve an effective heat-shielding performance with a smaller number of layers than hitherto using a construction employing specified infrared reflective layers. Solution Means The infrared reflective film of the present invention has at least two infrared reflective layers and, of these infrared reflective layers, the center reflective wavelength of at least one infrared reflective layer is between 1200 and 1300 nm. Furthermore, the laminated glass of the present invention is formed by interposing this infrared reflective film between two sheets of intermediate film, and laminating these between two sheets of glass.

Infrared reflective film, and laminated glass employing same

In a laminated glass, a plastic film is sandwiched between two sheets of resin intermediate film, and an infrared reflective film is formed in the plastic film by alternatively laminating resin films of different refractive indexes. The plastic film on which the infrared reflective film is formed meets any of the following conditions: (A) thermal shrinkage of 0.5 to 3% in the 90 through 150&#xb0; C. temperature range, (B) modulus of elasticity in the range of 30 through 2000 MPa in a temperature range of 90 through 150&#xb0; C., and (C) a rate of elongation of the plastic film of 0.3% or less when 10 N tensile force per 1 m width of the plastic film is exerted in the 90 through 150&#xb0; C. temperature range. This laminated glass is a curved infrared ray reflective laminated glass, with high transmissivity to visible light, high reflectivity in the infrared ray region, excellent insulating effect, and will transmit various electromagnetic waves.

Laminated glass with plastic film insert

Growing community of inventors

Matsusaka, Japan

Kensuke Izutani