49 relations: Abbe number, Achromatic lens, Acid, Alkali, Amorphous solid, Apochromat, Aspheric lens, Borate glass, Calcium fluoride, Chromatic aberration, Contrast (vision), Corrosion, Crown glass (optics), Crucible, Crystal, Crystallization, Depth of field, Diffraction-limited system, Dispersion (optics), Ernst Leitz GmbH, F-number, Flint glass, Fluorite, Fluorophosphate glass, Focal length, George W. Morey, Glass, Group velocity dispersion, Lanthanum oxide, Laser, Material dispersion coefficient, Metaphosphate, Mode-locking, Monochrome photography, Photographic filter, Platinum, Radioactive decay, Rare-earth element, Refractive index, Shutter speed, Spectrum, Spherical aberration, Sports photography, Telephoto lens, Thorium dioxide, Titanium dioxide, Ultrashort pulse, Wildlife photography, Zirconium dioxide.
In optics and lens design, the Abbe number, also known as the V-number or constringence of a transparent material, is a measure of the material's dispersion (variation of refractive index versus wavelength), with high values of V indicating low dispersion.
An achromatic lens or achromat is a lens that is designed to limit the effects of chromatic and spherical aberration.
An acid is a molecule or ion capable of donating a hydron (proton or hydrogen ion H+), or, alternatively, capable of forming a covalent bond with an electron pair (a Lewis acid).
In chemistry, an alkali (from Arabic: al-qaly “ashes of the saltwort”) is a basic, ionic salt of an alkali metal or alkaline earth metal chemical element.
In condensed matter physics and materials science, an amorphous (from the Greek a, without, morphé, shape, form) or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal.
An apochromat, or apochromatic lens (apo), is a photographic or other lens that has better correction of chromatic and spherical aberration than the much more common achromat lenses.
An aspheric lens or asphere is a lens whose surface profiles are not portions of a sphere or cylinder.
Borate glasses have a more complex action of alkali ions than silicate glasses.
Calcium fluoride is the inorganic compound of the elements calcium and fluorine with the formula CaF2.
In optics, chromatic aberration (abbreviated CA; also called chromatic distortion and spherochromatism) is an effect resulting from dispersion in which there is a failure of a lens to focus all colors to the same convergence point.
Contrast is the difference in luminance or colour that makes an object (or its representation in an image or display) distinguishable.
Corrosion is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide.
Crown glass is a type of optical glass used in lenses and other optical components.
A crucible is a container that can withstand very high temperatures and is used for metal, glass, and pigment production as well as a number of modern laboratory processes.
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
Crystallization is the (natural or artificial) process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal.
In optics, particularly as it relates to film and photography, the optical phenomenon known as depth of field (DOF), is the distance about the Plane of Focus (POF) where objects appear acceptably sharp in an image.
The resolution of an optical imaging system a microscope, telescope, or camera can be limited by factors such as imperfections in the lenses or misalignment.
In optics, dispersion is the phenomenon in which the phase velocity of a wave depends on its frequency.
Ernst Leitz GmbH was a German corporation now divided into three independent companies.
The f-number of an optical system (such as a camera lens) is the ratio of the system's focal length to the diameter of the entrance pupil.
Flint glass is optical glass that has relatively high refractive index and low Abbe number (high dispersion).
Not to be confused with Fluoride. Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2.
Fluorophosphate glass is a class of optical glasses composed of metaphosphates and fluorides of various metals.
The focal length of an optical system is a measure of how strongly the system converges or diverges light.
George Washington Morey (9 January 1888, Minneapolis, Minnesota – 3 October 1965, Bethesda, Maryland) was an American geochemist, physical chemist, mineralogist, and petrologist, known for the "Morey bomb" used in hydrothermal research.
Glass is a non-crystalline amorphous solid that is often transparent and has widespread practical, technological, and decorative usage in, for example, window panes, tableware, and optoelectronics.
In optics, group velocity dispersion (GVD) is a characteristic of a dispersive medium, used most often to determine how the medium will affect the duration of an optical pulse traveling through it.
Lanthanum oxide is La2O3, an inorganic compound containing the rare earth element lanthanum and oxygen.
A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation.
In an optical fiber, the material dispersion coefficient, M(λ), characterizes the amount of pulse broadening by material dispersion per unit length of fiber and per unit of spectral width.
A metaphosphate ion is an oxyanion that has the empirical formula.
Mode-locking is a technique in optics by which a laser can be made to produce pulses of light of extremely short duration, on the order of picoseconds (10−12 s) or femtoseconds (10−15 s).
Monochrome photography is photography where each position on an image can record and show a different amount of light, but not a different hue.
In photography and videography, a filter is a camera accessory consisting of an optical filter that can be inserted into the optical path.
Platinum is a chemical element with symbol Pt and atomic number 78.
Radioactive decay (also known as nuclear decay or radioactivity) is the process by which an unstable atomic nucleus loses energy (in terms of mass in its rest frame) by emitting radiation, such as an alpha particle, beta particle with neutrino or only a neutrino in the case of electron capture, gamma ray, or electron in the case of internal conversion.
A rare-earth element (REE) or rare-earth metal (REM), as defined by IUPAC, is one of a set of seventeen chemical elements in the periodic table, specifically the fifteen lanthanides, as well as scandium and yttrium.
In optics, the refractive index or index of refraction of a material is a dimensionless number that describes how light propagates through that medium.
In photography, shutter speed or exposure time is the length of time when the film or digital sensor inside the camera is exposed to light, also when a camera's shutter is open when taking a photograph.
A spectrum (plural spectra or spectrums) is a condition that is not limited to a specific set of values but can vary, without steps, across a continuum.
Spherical aberration is an optical effect observed in an optical device (lens, mirror, etc.) that occurs due to the increased refraction of light rays when they strike a lens or a reflection of light rays when they strike a mirror near its edge, in comparison with those that strike close to the centre.
Sports photography refers to the genre of photography that covers all types of sports.
In photography and cinematography, a telephoto lens is a specific type of a long-focus lens in which the physical length of the lens is shorter than the focal length.
Thorium dioxide (ThO2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in color.
Titanium dioxide, also known as titanium(IV) oxide or titania, is the naturally occurring oxide of titanium, chemical formula.
In optics, an ultrashort pulse of light is an electromagnetic pulse whose time duration is of the order of a picosecond (10−12 second) or less.
Wildlife photography is a genre of photography concerned with documenting various forms of wildlife in their natural habitat.
Zirconium dioxide, sometimes known as zirconia (not to be confused with zircon), is a white crystalline oxide of zirconium.