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Learn about the different types of optical prisms, such as dispersive, reflective, beam-splitting and polarizing prisms, and how they refract, reflect or split light. Find out how prisms are made of transparent materials like glass, acrylic or fluorite, and how they can create spectra, images or polarizations.
Optical glass is a type of glass suitable for optical systems such as lenses, prisms or mirrors. It contains additives to modify its optical or mechanical properties, such as refractive index, dispersion, transmittance and thermal expansion.
A dispersive prism is an optical device that uses refraction to split white light into its spectral components (the colors of the rainbow). Learn about the principle, types, history and applications of dispersive prisms, and how they differ from diffraction gratings and mirrors.
Learn about the different types of corrective lenses, such as glasses, contact lenses, and intraocular lenses, and how they are prescribed by eye care professionals. Find out how they improve visual perception and treat refractive errors, and the advantages and disadvantages of over-the-counter and self-selected lenses.
Prentice's rule is a formula to calculate the amount of prism correction in a lens based on decentration and lens power. It can be used for prescribing, tolerance control, or determining unprescribed prism in eyeglasses.
8×42 roof prism binoculars with rainguard and opened tethered lens caps. Binoculars or field glasses are two refracting telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects.
Glasses, also known as eyeglasses and spectacles, are vision eyewear with clear or tinted lenses mounted in a frame. They can be used for vision correction, eye protection, cosmetic purposes, or viewing specific visual information.
Chromatic aberration, also called color fringing, is a failure of a lens to focus all colors to the same point. Learn about the types, causes, and minimization methods of this optical phenomenon, and see examples and applications.
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