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This word comes from French lorgnette, from lorgner (to take a sidelong look at), but it is a false friend: the equivalent French name for this (obsolete) optical instrument is face-à-main while lorgnette (or lunette d'approche, longue-vue) usually means a ship captain's (monocular) telescope.
Bioptics, also known as a bioptic in the singular, and sometimes more formally termed a bioptic telescope, is a term for a pair of vision-enhancement lenses. They magnify between two and six times, and are used to improve distance vision for those with severely impaired eyesight, especially those with albinism .
The earliest form of eyewear for which any archaeological record exists comes from the middle of the 15th century. It is a primitive pince-nez whose frames were made from two pieces of either metacarpal bone from the forelimb of a bull or large pieces of antler. The pieces were paddle-shaped, and joined by an iron rivet which provided the ...
Many glasses manufactured during this period tended to imitate popular metal eyeglass styles, with significantly thinner frames and vertically smaller lenses. The popularization of 1960s styles by the television show Mad Men led to horn-rimmed frames produced in the 2010s being more traditional, with large lenses and thick, heavy frames.
The main material used early on for reflecting telescope mirrors was speculum metal, which reflected only about two-thirds of the incident light, and which tarnished, requiring maintenance. Two-element refracting telescopes were extensively used in 19th century observatories despite their smaller apertures than metal, and later glass, mirror ...
Considered one of the most iconic and widely used of all novelty items in the world, Groucho glasses were marketed as early as the 1940s [2] and are instantly recognizable to people throughout the world. [3] The glasses are often used as a shorthand for slapstick [4] and are depicted in the Disguised Face (🥸) emoji. [5] [6]
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