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Woman wearing cat eye glasses in the 1960s Dr. Otto Wichterle wearing a male version of cat eye glasses. Cat eye glasses (sometimes called "cat eyes" or "cat glasses") are a shape of eyewear. The form is closely related to the browline style, differentiated by having an upsweep at the outer edges where the temples or arms join the frame front ...
Mangin mirrors were used in searchlights, where they produced a nearly true parallel beam. Many Catadioptric telescopes use negative lenses with a reflective coating on the backside that are referred to as “Mangin mirrors”, although they are not single-element objectives like the original Mangin, and some even predate Mangin's invention. [4]
The name "cat's eye" comes from Shaw's inspiration for the device: the eyeshine reflecting from the eyes of a cat. In 1934, he patented his invention (patents Nos. 436,290 and 457,536), and on 15 March 1935, founded Reflecting Roadstuds Limited in Halifax to manufacture the items.
Cat eye glasses, a style of horn-rimmed glasses designed for women; Cat's eye (toy), a kind of toy marble; Cat's Eye (cocktail), a gin-based cocktail; Cat's eye (road), a type of road marker using retroreflectors; Cat eye tube, an electron tube used as a visual indicator
The retroreflective glass spheres shown set into a cat's eye in the United Kingdom. Shaw was inventive, even at an early age, but his most famous invention was the cat's eye for lighting the way along roads in the dark. There are several stories about how he came up with the idea.
Tiger's eye Tiger's eye. In gemology, chatoyancy (/ ʃ ə ˈ t ɔɪ. ən s i / shə-TOY-ən-see), also called chatoyance or the cat's eye effect, [1] is an optical reflectance effect seen in certain gemstones, woods, and carbon fiber. Coined from the French œil de chat, meaning 'cat's eye'. The chatoyant effect is typically characterized by ...
Transmittance of EnChroma color correcting lenses (indoor and outdoor) superimposed onto the normalized spectral sensitivities of the cone opsins of a color normal observer. Glasses with a notch filter (e.g. EnChroma glasses) filter a narrow band of light around 590 nm that excites both the L- and M-cones (yellow-green wavelengths). [12]
Purkinje images are reflections of objects from the structure of the eye. They are also known as Purkinje reflexes and as Purkinje–Sanson images. At least four Purkinje images are usually visible in the normal eye. The first Purkinje image (P1) is the reflection from the outer surface of the cornea. The second Purkinje image (P2) is the ...