Process for manufacturing painted backlit displays having unifor

Details Process for manufacturing painted backlit displays having unifor Process for manufacturing painted backlit displays having unifor

1994-01-11

1995-07-11

Lazarus, Ira S.

Illumination

Illuminated scale or dial

Internal light source

362 85, 40541, 356432, G01D 1128

Patent

active

054326842

ABSTRACT:
A method is provided for producing an illuminated graphic display composed of non-flat molded plastic backlit components which serve as interior controls for an instrument panel of an automobile. The method involves a process by which such backlit components are manufactured so as to result in minimal variability of backlighting intensity. The method particularly involves molding each backlit component from a white translucent substrate whose thickness is individually tailored such that the backlit component exhibits a suitable level of backlighting intensity when illuminated by a minimal number of light sources. For daytime viewing, a suitable and uniform level of graphics whiteness for the group of backlit components is achieved by painting each substrate with a white translucent coating, such that the backlit components have similar reflective characteristics.

REFERENCES:
patent: 2032895 (1936-03-01), Slutsky
patent: 3694945 (1972-10-01), Detiker
patent: 3841762 (1974-10-01), Pettersson
patent: 4729067 (1988-03-01), Ohe
patent: 4891896 (1990-01-01), Boren
patent: 4977695 (1990-12-01), Armbruster
patent: 5066132 (1991-11-01), Nagata et al.
patent: 5095409 (1992-03-01), Dematteo et al.
patent: 5235400 (1993-08-01), Terasawa et al.

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