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Contarex I, showing aperture selected in the "Bullseye/Cyclops" window. The Contarex I, aka Bullseye (catalog 10.2401), was built between 1959 and 1966. [14] It was the first 35mm SLR camera with a focal plane shutter that provides direct light meter coupling to the shutter-, aperture-, and film speed-settings; they are interconnected by cords.
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Kiron Corporation was a subsidiary of Kino Precision Industries, Ltd., a Japanese manufacturer of photographic lenses.Kiron was based in Carson, California, operating in the 1980s primarily as the United States distributor of Kiron lenses, which were offered in a variety of mounts compatible with many popular 135 film manual focus single-lens reflex camera systems.
As with objective lenses, a condenser lens with a maximum numerical aperture of greater than 0.95 is designed to be used under oil immersion (or, more rarely, under water immersion), with a layer of immersion oil placed in contact with both the slide/coverslip and the lens of the condenser. An oil immersion condenser may typically have NA of up ...
Orthokeratology lens. Orthokeratology, also referred to as Night lenses, Ortho-K, OK, Overnight Vision Correction, Corneal Refractive Therapy (CRT), Accelerated Orthokeretology, Cornea Corrective Contacts, Eccentricity Zero Molding, and Gentle Vision Shaping System (GVSS), is the use of gas-permeable contact lenses that temporarily reshape the cornea to reduce refractive errors such as myopia ...
The Fairness to Contact Lens Consumers Act (Pub. L. Tooltip Public Law (United States) 108–164 (text), 117 Stat. 2024, codified at 15 U.S.C. ch. 102 et seq.), also known as FCLCA, [citation needed] is a United States federal law that aims to improve consumer protection and ocular health for contact lens users.