Multi-Spectral UV IIluminator
First Claim
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1. An ultraviolet illuminator, comprising;
- a first ultraviolet LED adapted to emit at a first spectral frequency,at least a second ultraviolet LED adapted to emit at second spectral frequency; and
,a controller adapted to independently turn the LED'"'"'s on and off, whereby the illuminator is made to illuminate an object in any combination of one spectral frequency at a time, multiple spectral frequencies simultaneously or a predetermined sequence of on/off periods of each spectral frequency.
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Abstract
A multi-spectral Ultraviolet (UV) illuminator is described. The illuminator allows for the convenient reading of authentication patterns formed by UV inks. The novel illuminator is usable with inks of different spectral responses, allowing for reading many types of patterns with one device. The illuminator further provides the capability of producing multiple UV frequency illumination sequences, allowing for more complex, harder-to-counterfeit, authentication markings, such as animated patterning.
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6 Claims
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1. An ultraviolet illuminator, comprising;
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a first ultraviolet LED adapted to emit at a first spectral frequency, at least a second ultraviolet LED adapted to emit at second spectral frequency; and
,a controller adapted to independently turn the LED'"'"'s on and off, whereby the illuminator is made to illuminate an object in any combination of one spectral frequency at a time, multiple spectral frequencies simultaneously or a predetermined sequence of on/off periods of each spectral frequency. - View Dependent Claims (2, 3, 4, 5)
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6. A method of identification of a pattern formed from ultraviolet reactive surface treatments comprising,
illuminating the pattern with source of multi spectral UV light; - and,
causing the source emit in any combination of one spectral frequency at a time, multiple spectral frequencies simultaneously or a predetermined sequence of on/off periods of spectral frequencies.
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Specification