Ultraviolet light writing system
AssigneeZen Design Group, Ltd.
InventorsSun Yu, Andrew Tiefel, David Perrin
Life of this patent
Estimating the term…
Abstract
An ultraviolet light emitting diode flashlight is contained within a housing having a pen tip extending from the housing and an ink or dye reservoir in fluid communication with the pen tip. The ultraviolet light emitting diode flashlight within the housing emits light capable of inducing fluorescence in the ink or dye. A switch assembly completes an electrical circuit between a light emitting diode and a battery to activate the flashlight. A writing system package includes at least two of: a neon or pastel colored writing surface, a security pen having an ink or dye that fluoresces in the visible portion of the light spectrum upon exposure to ultraviolet light, and an ultraviolet light emitting diode flashlight.
Claims27
A pen-light comprising:
- a battery holder having a distal terminus and proximal terminus;
- a battery within said holder;
- a switch;
- a light emitting diode module within said holder, said module selectively forming an electrical circuit with said battery and said switch;
- a pen assembly having a cap end and a pen tip end, said pen assembly mateably attachable to said battery holder via both the cap end and pen tip end;
- and
- an ink or dye refill in fluid communication with a pen tip extending from the pen tip end.
A pen-light comprising:
- a housing;
- an pen tip extending from said housing;
- an ink or dye refill in fluid communication with said pen tip, said refill containing an ink or dye that fluoresces in the visible portion of the light spectrum upon exposure to light having a wavelength of less than 420 nanometers;
- a light emitting diode within said housing emitting at least one wavelength less than 420 nanometers;
- a battery within said housing;
- and
- a switch assembly completing an electrical circuit between said light emitting diode and said battery upon engagement thereof.
A writing system package comprising at least two of the following in combination:
- a writing surface having a neon or pastel coloration;
- a security pen having an ink or dye that fluoresces in the visible portion of the light spectrum upon exposure to light having a wavelength of less than 420 nanometers;
- and
- a light emitting diode flashlight comprising a light emitting diode emitting at least one wavelength less than 405 nanometers.
An improved security writing system including a writing surface, a pen containing an ink or dye with visible light fluorescence upon exposure to a light wavelength shorter than that of the ink or dye visible fluorescence and a handheld light source that emits a wavelength stimulating visible fluorescence in the ink or dye applied to the writing surface, wherein the improvement lies in:
- the writing surface having a pastel or neon coloration.
An improved security writing system including a writing surface, a pen containing an ink or dye with visible light fluorescence upon exposure to a light wavelength shorter than that of the ink or dye visible fluorescence and a handheld light source that emits a wavelength stimulating visible fluorescence in the ink or dye applied to the writing surface, wherein the improvement lies in:
- the writing surface lacks an optical brightening agent.
An improved security writing system including a writing surface, a pen containing an ink or dye with visible light fluorescence upon exposure to a light wavelength shorter than that of the ink or dye visible fluorescence and a handheld light source that emits a wavelength stimulating visible fluorescence in the ink or dye applied to the writing surface, wherein the improvement lies in:
- the light source is an ultraviolet light emitting diode flashlight.
Dependencies are inferred from the claim text.