Model No. Q42-R INFRARED SENSOR 9639 Dr. Perry Road Ijamsville, Maryland 21754 Phone: 301-831-1001 Fax: 301-831-8221

.....Artist's conception of Electron Trapping..... LUMITEK® IR Sensor Cards work on a principle known as "Electron Trapping", where phosphor-based compounds are employed to absorb and "trap" incoming light energy from a short wavelength, and release that stored light in the form of visible light upon stimulation from a longer IR wavelength. The visible result is a localized glow which is relative in intensity to the amount of stored light and IR power levels exciting the active area.

Exposure of LUMITEK's up-converting materials to IR will produce a diffuse localized visible glow for detection and location of IR sources. These IR sensor screens provide a low-cost alternative to laser beam finders and beam profile instruments by providing the user with an instant visible pattern for determining beam location and approximate beam size. In addition the high sensitivity of the IR sensor screens provides users of various components ( e.g., IR emitting diodes, optical fibers, etc. ) an effective tool for determining the presence or absence of IR.