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Adjustable focus eyeglasses are eyeglasses with an adjustable focal length. They compensate for refractive errors (such as presbyopia) by providing variable focusing, allowing users to adjust them for desired distance or prescription, or both. Current bifocals and progressive lenses are static, in that the user has to change their eye position ...
Prism (optics) An optical prism is a transparent optical element with flat, polished surfaces that are designed to refract light. At least one surface must be angled — elements with two parallel surfaces are not prisms. The most familiar type of optical prism is the triangular prism, which has a triangular base and rectangular sides.
1. Chopard De Rigo Vision — $408,000. The no. 1 most expensive sunglasses in the world are the Chopard de Rigo Vision. Made by Chopard, a Swiss watchmaker and jeweler, this eyewear boasts 60 ...
Olga Bridgman. George Malcolm Stratton (September 26, 1865 – October 8, 1957) was an American psychologist who pioneered the study of perception in vision by wearing special glasses which inverted images up and down and left and right. He studied under one of the founders of modern psychology, Wilhelm Wundt, and started one of the first ...
These stackable drinking glasses look super expensive, but this set of four actually costs under $25! They're also super thick and durable.
Optical coating. An optical coating is one or more thin layers of material deposited on an optical component such as a lens, prism or mirror, which alters the way in which the optic reflects and transmits light. These coatings have become a key technology in the field of optics. One type of optical coating is an anti-reflective coating, which ...
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