IR Sensor Cards are laminated transmissive or reflective sensor screens and are the most commonly used basic sensor products. The phosphor layer is laminated between clear plastic for a wide range of near-IR detection and imaging applications.
When struck by a laser in the Near IR range between 0.7-1.6 Microns, the phosphor illuminates and emits a 640nm (deep orange) wavelength, which is visible to the human eye.
Minimum required intensity for viewing in a dark room is 3 uWatts/cm2. In normal room light, 100 uWatts/cm2 is required for viewing. Resolution is 3 Lp/mm. (3 lines per mm).
Maximum power density is 500-700 mWatts/cm2 for a continuous wave laser. If the laser is pulsed, the power density will need to be calculated in order ao avoid damage to the card.
The overall card dimensions are 2.5" X 4", with an active area of 2" X 2".