Light shielding screen structure and a process for producing the

Details Light shielding screen structure and a process for producing the Light shielding screen structure and a process for producing the

1988-06-02

1989-10-31

Hix, L. T.

Illumination

Supported by vehicle structure

Condition responsive

350320, 362354, G02B 2700

Patent

active

048773085

ABSTRACT:
A light shielding screen structure comprising a first light transmissible substrate, a second light transmissible substrate and, interposed therebetween, a light shielding screen comprising a perforated structure comprising a plurality of fine partition walls and apertures defined by said partition walls, said first and second light transmissible substrates being connected respectively to both end surfaces of the parition walls of the light shielding screen through a photocured adhesive layer. The screen structure exhibits a peeling strength of 50 g/cm or more at the connection between each partition wall and each light transmissible substrate and includes a fillet of not greater than 5 .mu.m in width in each aperture at a corner portion defined by the inner wall of each aperture and the inner surface of each light transmissible substrate. The light shielding screen structure exhibits not only excellent mechanical strength but also excellent optical properties and is advantageously used in various indicators and image indicating devices.

REFERENCES:
patent: 2053173 (1936-09-01), Astima
patent: 3102460 (1963-09-01), Pickett
patent: 4342821 (1982-08-01), Galves et al.
patent: 4506953 (1985-03-01), Shimizu et al.
patent: 4688156 (1987-08-01), Suzuki et al.
patent: 4820021 (1989-04-01), Usubuchi et al.

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