Glass pane with reflectance reducing coating and combiner of head-up display system,申请号US19940228522-传众专利搜索

Glass pane with reflectance reducing coating and combiner of head-up display system

申请公布号：US5496621(A)

申请号：US19940228522

申请日期：1994.04.15

申请公布日期：1996.03.05

申请人：

CENTRAL GLASS COMPANY, LIMITED

发明人：MAKITA, KENSUKE;TAKAMATSU, ATSUSHI;TANAKA, KATSUTO

分类号：G02B5/28;G02B27/00;G02B27/01;(IPC1-7):G02B1/10

主分类号：G02B5/28

摘要：The invention relates to a transparent coating on a transparent glass pane which may be a laminated glass pane such as an automobile windshield. The present invention provides a two-layer coating including a first layer which is a transparent oxide film in direct contact with the major surface of the glass substrate and a second layer which is a transparent oxide film. The first layer has a thickness of 70-230 nm and a refractive index of 1.80-2.10 and includes a major portion and a minor portion which is exposed and adapted to be used as a combiner of a head-up display system. The second layer is formed on the major portion of the first layer so as to expose the minor portion of the first layer. The second layer has a thickness of 110-130 nm and a refractive index of 1.40-1.50. An additional film is optionally formed on the minor portion of the first layer so as to fully or partly cover the minor portion. The additional layer is adapted to be used as a wavelength-selective combiner of the head-up display system. The two-layer coating except the minor portion is adapted to be used as a reflectance reducing coating. To reduce the reflectance of perpendicularly incident light the two-layer coating can be modified into a three-layer coating by interposing another oxide film.