UV feature illumination

Details UV feature illumination UV feature illumination

2007-08-28

2007-08-28

Colilla, Daniel J. (Department: 2854)

Typewriting machines

Key-board or key lever-actuating mechanism

C400S479000, C400S473000, C341S170000

Reexamination Certificate

active

11155421

ABSTRACT:
In an aspect of the present invention, methods and systems for providing an input device are disclosed. In an aspect of the present invention, the input device includes a symbol and a UV light source is provided to direct UV light on the symbol. The symbol includes an UV excitable compound. In an aspect of the invention, the UV light from the UV light source is directed onto the symbol with a light pipe. In operation, the UV light causes the symbol to glow so that the symbol is visible in a darkened environment.

REFERENCES:
patent: 5401927 (1995-03-01), Lundell et al.
patent: 6196738 (2001-03-01), Shimizu et al.
patent: 6462941 (2002-10-01), Hulick et al.
patent: 6917005 (2005-07-01), Sasaki
patent: 2001/0038381 (2001-11-01), Griencewic
patent: 2003/0202339 (2003-10-01), Oross et al.
patent: 1189130 (2002-03-01), None
patent: 2004047412 (2004-02-01), None

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