| 摘要 |
An apparatus and method for illuminating with ultraviolet light an optically readable code (80) formed with ultraviolet material, preferably an ultraviolet ink or resin. The apparatus includes: a housing (10) having an interior chamber, an interior wall on one side of the interior chamber, opposite said first side, a first opening (40) and a second opening in said first side, and a third opening in said second side, a passageway (35) having a perimeter surrounded by an outer wall, the passageway extending substantially from the second opening to the third opening, the passageway perimeter defining the interior wall of said chamber, a strobe lamp (55) disposed within said chamber having an ultraviolet light output wherein the passageway perimeter prevents the ultraviolet light generated by said strobe lamp from passing into said passageway, and an ultraviolet bandpass filter covering said first opening of said chamber, but not said passageway, to block substantially all non-ultraviolet light generated by said strobe lamp. The apparatus preferably further includes a second filter of a color which matches the color of the ultraviolet material to transmit only light of that color to an image sensor, such as a CCD device (50), positioned behind the passageway. The method includes illuminating the strobe lamp in response to the activation of a proximity sensor (64) and then reading the code with the image sensor.
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