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What reviewers say: More than 8,000 Amazon reviewers have given the Kintion Pocket Mirror a perfect five-star rating, with many shoppers highlighting its magnification and brightness. "I cannot ...
Buy: Pro-Form Vue $1,499.00 . While the Pro-Form Vue is still pricey, it has the cheapest price tags of the fitness mirrors we tested and is an excellent value for what it offers.
A magnification factor of 7, for example, produces an image 7 times larger than the original seen from that distance. The desirable amount of magnification depends upon the intended application, and in most binoculars is a permanent, non-adjustable feature of the device (zoom binoculars are the exception).
Galilean type Soviet-made miniature 2.5 × 17.5 monocular Diagram of a monocular using a Schmidt-Pechan prism: 1 – Objective lens 2 – Schmidt-Pechan prism 3 – Eyepiece. A monocular is a compact refracting telescope used to magnify images of distant objects, typically using an optical prism to ensure an erect image, instead of using relay lenses like most telescopic sights.
The effect happens when light goes from a medium with a higher index of refraction to one with a lower value (like air). A new type of dielectric "perfect mirror" was developed in 1998 by researchers at MIT. [2] [3] These unusual mirrors are very efficient reflectors over a broad range of angles and wavelengths, and are insensitive to polarization.
The design allows for high magnification with remarkably high eye relief – the longest eye relief proportional to focal length of any design before the Nagler, in 1979. The field of view of about 55° is slightly superior to the Plössl, with the further advantages of better eye relief and requiring one less lens element.
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