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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