Ultraviolet gemstone display box

摘要

A display box displays the fluorescence of a gemstone having naturally occurring phosphors. The box has a top portion hinged with a bottom portion. A compact ultraviolet LED assembly is mounted at a mounting angle in the insert in a cavity of the top portion. The LED assembly has: an LED circuit; a 3 watt 365 nm ultraviolet LED diode disposed on the LED circuit; and an optical collimator having a parabolic lens to focus the emitted LED radiation to a less than 15° spread. A compact battery for powering the LED assembly is provided in a recess of the bottom portion. A central holder/deck holds the gemstone in a direct path of the emitted collimated LED radiation of the LED assembly. In operation, the gemstone seated in the central holder/deck emits a corona of strong visible fluorescence while the ultraviolet radiation and the LED assembly are not seen.

主权项

1. A display box for displaying fluorescence of a gemstone having naturally occurring phosphors, comprising:
a top portion having an interior cavity; an insert mounted in the interior cavity of the top portion; a compact ultraviolet LED assembly mounted at a mounting angle in the insert, the LED assembly having:
an LED circuit;a 3 watt 365 nm ultraviolet LED diode disposed on the LED circuit;an optical collimator having a parabolic lens to focus the emitted LED radiation to a less than 15° spread; a bottom portion in hinged relation with the top portion, and having a recess for containing a compact battery for powering the LED assembly; and a central holder/deck positioned in the bottom portion over the battery for retaining the gemstone so that the gemstone is retained in a direct path of the emitted collimated LED radiation of the LED assembly; such that the gemstone seated in the central holder/deck emits a corona of strong visible fluorescence while the ultraviolet radiation and the LED assembly are not seen.