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2. Leupold & Stevens - Wikipedia

   en.wikipedia.org/wiki/Leupold_&_Stevens

   Leupold & Stevens, Inc. is an American manufacturer of telescopic sights, red dot sights, binoculars, rangefinders, spotting scopes, and eyewear located in Beaverton, Oregon, United States. The company, started in 1907, is on its fifth generation of family ownership.

3. Objective (optics) - Wikipedia

   en.wikipedia.org/wiki/Objective_(optics)

   These lenses are often color coded for easier use. The least powerful lens is called the scanning objective lens, and is typically a 4× objective. The second lens is referred to as the small objective lens and is typically a 10× lens. The most powerful lens out of the three is referred to as the large objective lens and is typically 40–100×.

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. Stereo microscope - Wikipedia

   en.wikipedia.org/wiki/Stereo_microscope

   A - Objective B - Galilean telescopes (rotating objectives) C - Zoom control D - Internal objective E - Prism F - Relay lens G - Reticle H - Eyepiece The stereo , stereoscopic or dissecting microscope is an optical microscope variant designed for low magnification observation of a sample, typically using light reflected from the surface of an ...

6. M39 lens mount - Wikipedia

   en.wikipedia.org/wiki/M39_lens_mount

   The M39 lens mount is a screw thread mounting system for attaching lenses to 35 mm cameras, primarily rangefinder (RF) Leicas. It is also the most common mount for Photographic enlarger lenses. True Leica Thread-Mount (LTM) is 39 mm in diameter and has a thread of 26 turns-per-inch or threads-per-inch (tpi) (approximately 0.977 mm pitch) of ...

7. Telecentric lens - Wikipedia

   en.wikipedia.org/wiki/Telecentric_lens

   A telecentric lens is a special optical lens (often an objective lens or a camera lens) that has its entrance or exit pupil, or both, at infinity. The size of images produced by a telecentric lens is insensitive to either the distance between an object being imaged and the lens, or the distance between the image plane and the lens, or both, and ...

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9. Barrett Optical Ranging System - Wikipedia

   en.wikipedia.org/wiki/Barrett_Optical_Ranging_System

   It takes data from thousands of tables and accounts for a number of real-time external factors automatically giving the shooter the exact yardage at which a bullet will hit its target. [ 1 ] Since the BORS is mounted directly to the scope and coupled with the elevation knobs, the computer can interact with the scope by simply turning the ...