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  2. Reflector sight - Wikipedia

    en.wikipedia.org/wiki/Reflector_sight

    Using an LED as a reticle is an innovation that greatly improves the reliability and general usefulness of the sight: there is no need for other optical elements to focus light behind a reticle; the mirror can use a dichroic coating to reflect just the red spectrum, passing through most other light; and the LED itself is solid state and ...

  3. Gyro gunsight - Wikipedia

    en.wikipedia.org/wiki/Gyro_gunsight

    To set range the dial adjusts the reticle size to match target wingspan. Currently set to the Junkers Ju 88 , it ranged in size from the large Fw 200 Condor to the small Messerschmitt Bf 109 . A gyro gunsight (G.G.S.) is a modification of the non-magnifying reflector sight in which target lead (the amount of aim-off in front of a moving target ...

  4. Telescopic sight - Wikipedia

    en.wikipedia.org/wiki/Telescopic_sight

    Telescopic sights based on image erector lenses (used to present to the user with an upright image) have two planes of focus where a reticle can be placed: at the focal plane between the objective and the image erector lens system (the First Focal Plane (FFP)), or the focal plane between the image erector lens system and the eyepiece (the ...

  5. AN/PVS-4 - Wikipedia

    en.wikipedia.org/wiki/AN/PVS-4

    The Stinger reticle is very different in that it is a rear-mounted illuminated reticle -the reticle is built into the tube and positioned on top of the screen so both the screen and reticle are in focus. It also allows red-on-green illumination which makes the reticle stand out.

  6. Norden bombsight - Wikipedia

    en.wikipedia.org/wiki/Norden_bombsight

    This sight combined the images of the radar and a lens system in front of the aircraft, allowing them to be directly compared at once through a binocular eyepiece. [ 45 ] Bombsights on older aircraft, like the Boeing B-29 Superfortress and the later B-50 , were left in their wartime state.

  7. Binoculars - Wikipedia

    en.wikipedia.org/wiki/Binoculars

    Military binoculars can and were also used as measuring and aiming devices, and can feature filters and (illuminated) reticles. [83] [84] Military binoculars of the Cold War era were sometimes fitted with passive sensors that detected active IR emissions, while modern ones usually are fitted with filters blocking laser beams used as weapons.