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SWAROVSKI OPTIK, headquartered in Absam, Tyrol, Austria is part of the Swarovski group of companies. Founded in 1949, the Austrian company specialises in the development and manufacturing of long-range optical instruments in the premium segment of the market, including binoculars, telescopes (spotting scopes), rifle scopes, range finders and night sight devices.
Man with glasses. A woman with glasses. Glasses, also known as eyeglasses or spectacles, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support.
Silhouette currently produces eyewear under three brands: Silhouette, NEUBAU EYEWEAR and evil eye. [18] A Silhouette Frame In Someones Hand With Blue Cut Lensess. Since 2000, the company's screwless and hingeless Titan Minimal Art eyewear has been certified for space travel and has been used on more than 70 space missions to date. [22] [23]
However, if glasses frames are thicker and so significantly protrude from the face, an eye relief over 17 mm should be considered. Eyeglasses wearers should also look for binoculars with twist-up eye cups that ideally have multiple settings, so they can be partially or fully retracted to adjust eye relief to individual ergonomic preferences. [35]
to correct refractive errors of the eye; not invasive Contact lenses: to correct refractive errors of the eye; a little invasive Phoropter: used in refraction testing Tonometers: used to determine the intraoccular pressure (IOP) - useful in glaucoma; video link for various types of tonometers. Speculum: to keep the eyes open during any operation
Binocular rivalry, a phenomenon of visual perception Binoviewer , an optical device designed to enable binocular viewing through a single objective Topics referred to by the same term
The upper end of the stick needs to be adjusted to each binocular model. In the cold Finnish climate it is common to cover finnsticks made of metal with an insulator to keep the hands warmer. Finnsticks are also commercially available and some binocular manufacturers provide an attachment for a finnstick (or a monopod) as an accessory.
The eye needs to be held at a certain distance behind the eye lens of an eyepiece to see images properly through it. This distance is called the eye relief. A larger eye relief means that the optimum position is farther from the eyepiece, making it easier to view an image.