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  2. Flashlight - Wikipedia

    en.wikipedia.org/wiki/Flashlight

    Flashlights using a "total internal reflection" assembly have a transparent optical element (light pipe) to guide light from the source into a beam; no reflector surface is required. For a given size of light source, a larger reflector or lens allows a tighter beam to be produced, while capturing the same fraction of the emitted light.

  3. Fulton MX991/U Flashlight - Wikipedia

    en.wikipedia.org/wiki/Fulton_MX991/U_Flashlight

    Changes to the MX-99/U flashlight over the TL-122(D) include an improved, high-impact plastic housing, a plated steel battery spring, improved gasketing (the "U" designation stands for "Underwater"), [4] and a lens reflector deeply into the lens shroud (to reduce light spillover). During the Vietnam era, an improved model was introduced, the MX ...

  4. The ML50L is a good example of why the most lumens don’t always make the best flashlight. The focusing reflector helps this flashlight throw a beam as far as technically brighter lights do, as ...

  5. List of light sources - Wikipedia

    en.wikipedia.org/wiki/List_of_light_sources

    This is a list of sources of light, the visible part of the electromagnetic spectrum.Light sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that ...

  6. Retroreflector - Wikipedia

    en.wikipedia.org/wiki/Retroreflector

    A bicycle reflector appears brighter to the passenger car driver than to the truck driver at the same distance from the vehicle to the reflector. [1] The light beam and the normal axis of the reflector as shown in Figure 2 form the entrance angle. The entrance angle is a function of the orientation of the reflector to the light source.

  7. Parabolic reflector - Wikipedia

    en.wikipedia.org/wiki/Parabolic_reflector

    An oblique projection of a focus-balanced parabolic reflector. It is sometimes useful if the centre of mass of a reflector dish coincides with its focus.This allows it to be easily turned so it can be aimed at a moving source of light, such as the Sun in the sky, while its focus, where the target is located, is stationary.