Numerically, 100 percent is the highest possible CRI. The measure of how accurately the light source illuminates the true colors of an object. Can also be spelled “crenulated”.ĬRI: Color Rendering Index.

A crenelated edge helps to prevent leaving the light on when placed back on its head as well as increasing its ability to be used as a weapon on larger flashlights. Generally the highest output version of an LED when compared to other tints.ĬREE: Manufacturer of high-efficiency, high-power LEDs such as the XM-L2, XR-E, XP-E, XP-G2, and MC-E.Ĭrenelated: Refers to the scalloped edge at the front of the light. With a heavily textured reflector, the corona becomes more prominent and the flood/spill is intensified.ĬW: Cool white, a bluish tint on the LED. Usually measured with a lux meter, 1 meter from the light source.Ĭorona: Refers to the transitional area between the central hotspot of a flashlight and the surrounding are of the spill.

It is a measurement of light intensity, in lumens, per steradian (solid angle). A charging method that battery chargers use to supply a constant level of current and voltage to the battery.Ĭd: Candela. Cree uses bin numbers such as P4, Q2, Q3, Q4, Q5, R2, R3, R4, R5, and S2.īoost: A type of electronic circuit unit which amps up the voltage, increasing the output.īuck: A circuit unit which decreases the voltage, reducing the voltage.ĬC/CV: Constant current / constant voltage. Each bin is approximately 7% brighter than the last (U2 v U3). At the specified distance, the amount of light hitting the surface of an object will be roughly the same as the light of a full moon.īeamshot: A picture of the beam of the flashlight, usually pictured shining on a white wall.īezel: The front of a flashlight which contains and surrounds the lens.īin: A way for manufacture to classify output of the LED, once you get past the model. Less reflection improves the efficiency of the light.īeam distance: The distance a flashlight can effectively illuminate, measured in meters using the ANSI/NEMA FL-1 standard. This special coating is applied to the surface of the lens to reduce reflection. Some icons that can be found are Peak Beam Intensity, Beam Distance, Impact Resistance, Run Time, Light Output, Water Resistance, and Water Proof.ĪR Coating: Stands for anti-reflective coating. If a flashlight package carries a ANSI/NEMA FL-1 icon, it means that the product complies with the organization standards. Organization comprised of representatives from 14 companies in the industry. Stands for the American National Standards Institute and the National Electrical Manufacturers Association. ANSI/NEMA FL-1: Industry standard used for measuring the performance of flashlights.

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