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The flashlight body was painted Army olive drab and the lens, switch and battery caps were finished in black, but the TL-122 used the same #14 screw-base bulb as the BSA flashlight. The TL-122 in its various forms was manufactured by various U.S., Italian, and British contractors for the US, British, Italian (post-WWII), and French armies.
Translucent colored plastic cones slipped over the lens of a flashlight increase the visibility when looking at the side of the light. Such marshalling wands are frequently used for directing automobiles or aircraft at night. Colored lenses placed over the end of the flashlight are used for signalling, for example, in railway yards.
The collimator lens has the lower focal length and is placed closer to the light source, and the collector lens, which focuses the light into the triplet lens, is placed after the projection image (an active matrix LCD panel in LCD projectors). Fresnel lenses are also used as collimators in overhead projectors.
Maglite flashlights have been known to be used as a ready substitute for a baton. In 2004, the Los Angeles Police Commission moved to use smaller flashlights, with Alan Skobin, the commission vice-president, stating that "This policy makes clear flashlights are for illumination and discourages their use as an impact tool.
Olight is a flashlight brand [4] that was founded in 2007 by Fox Fan. [5] The brand is headquartered in Taiwan, [6] and has operations in Georgia, United States. [7]Olight specializes in the production of flashlights, [8] including LED flashlights, [9] survival lights, [10] and tactical flashlights. [11]
A flashbulb widely used during the 1960s was the Press 25, the 25-millimetre (1 in) flashbulb often used by newspapermen in period movies, usually attached to a press camera or a twin-lens reflex camera. Its peak light output was around a million lumens.
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A ring flash is a circular light that is often operated with a camera lens in the center to take photographs. Unlike point light sources, a ring flash can illuminate a subject with minimal shadows by closely and evenly surrounding the optical axis of the camera lens.