Currency acceptor, and light source for use therein

Details Currency acceptor, and light source for use therein Currency acceptor, and light source for use therein

2006-01-31

2006-01-31

O'Shea, Sandra (Department: 2875)

Illumination

Plural light sources

Particular wavelength

C362S240000, C362S545000

Reexamination Certificate

active

06991347

ABSTRACT:
A multi-wavelength light source for use in a banknote validator comprises a housing containing a plurality of LEDs and a window for releasing light emitted by the LEDs. Visible wavelengths have a direct path to a diffuser located in the window. Infra-red wavelengths have to be diffusively reflected by the interior of the housing before they reach the diffuser, and thereby suffer greater attenuation that the visible wavelengths. The diffuser acts as a substantially point-like light source.

REFERENCES:
patent: 3910701 (1975-10-01), Henderson et al.
patent: 4618257 (1986-10-01), Bayne et al.
patent: 6178014 (2001-01-01), Copenhaver et al.
patent: 6222623 (2001-04-01), Wetherell
patent: 6234648 (2001-05-01), Borner et al.
patent: 1 081 660 (2001-03-01), None
patent: 1 103 759 (2001-05-01), None

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