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Difference between revisions of "Terminology"
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;optic: usually a total-internal-reflection (see TIR) reflector/refractor, as opposed to a metal-coated reflector. | ;optic: usually a total-internal-reflection (see TIR) reflector/refractor, as opposed to a metal-coated reflector. | ||
;OTF: Out-the-front. The amount of light that is actually emitted out of the front of the light, usually measured in lumens. This number is always lower than lumens measured at the emitter (at the LED itself). Some manufacturers quote OTF lumens and others use emitter lumens. | ;<span id="OTF">OTF</span>: Out-the-front. The amount of light that is actually emitted out of the front of the light, usually measured in lumens. This number is always lower than lumens measured at the emitter (at the LED itself). Some manufacturers quote OTF lumens and others use emitter lumens. | ||
;P60 drop-in: an assembly of the reflector, bulb, and driver originally introduced by [[SureFire]], but now an industry standard. See article [[Flashlight Types#P60|P60]] | ;P60 drop-in: an assembly of the reflector, bulb, and driver originally introduced by [[SureFire]], but now an industry standard. See article [[Flashlight Types#P60|P60]] | ||