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Angénieux
Angénieux is a French manufacturer of photographic and cinematographic lenses. The main markets are cinema, television, space travel and medicine. The company is part of the Thales Group, which represents Angénieux in 48 countries. The company is headquartered in Saint-Héand, near Saint-Étienne in France. Founded in 1935 by Pierre Angénieux Pierre Angénieux (; 14 July 1907 in Saint-Héand – 26 June 1998) was a French engineer and optician, one of the inventors of the modern zoom lenses, and famous for introducing the Angénieux retrofocus. Biography Angénieux graduated from the ..., the company is established in Saint-Héand (Loire), the birthplace of its founder located near Saint-Étienne. His original specialty is the design and manufacture of precision optics for film and photography. Ousted from the amateur market in the 1960s, it refocused its activity on two productions that have made its reputation: spatial optics and zooms. Now part of the Thales Group, Tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre Angénieux
Pierre Angénieux (; 14 July 1907 in Saint-Héand – 26 June 1998) was a French engineer and optician, one of the inventors of the modern zoom lenses, and famous for introducing the Angénieux retrofocus. Biography Angénieux graduated from the École Nationale Supérieure d'Arts et Métiers in 1928, and from the École Supérieure d'Optique the next year. He was a student of Henri Chrétien. After working for Pathé, Angénieux founded a company specialising in cinema equipment in 1935, ''Les Etablissements Pierre Angénieux''. He started using Optics#Classical optics, Geometric optics rather than Physical optics in the design of his lenses, as Carl Zeiss and Ernst Abbe did, and developed computing methods decreasing the time needed to design a lens by an order of magnitude. In 1950, Angénieux introduced the Angénieux retrofocus, which allowed mounting wide-angle lenses on Single-lens reflex cameras. In 1953, Angénieux designed the fastest lens of the time, reaching 0.95. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cine Lens
Cine lenses or cinema lenses are lenses that are designed especially for cinematography, and whose main distinguishing feature from conventional photographic lenses is the "clickless" or "declicked" aperture ring. Markings on the aperture ring indicate T-stops rather than f-stops as used in still photography. Furthermore, it is a desirable characteristic for cine lenses to occupy the same form factor as each other so as to be readily interchangeable and identical in operation. This particularly applies to lenses with different focal lengths. In order to maximise interchangeability, lenses within a series of cine lenses are often identical in transmittance of light (maximum T-stop). Anamorphic lenses for cinematography may also be classified as cine lenses. Manufacturers The following companies produce cine lenses: *Angénieux *Arri *Atlas Lens Co. *Canon Inc. *Cooke Optics *Fujifilm *Irix * Leica *Rokinon *Samyang Optics *Sigma Corp. * Vantage® * ZeissNitecore*Venus Optics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint-Héand
Saint-Héand () is a commune in the Loire department in central France, 12 kilometres from Saint-Étienne. The name ''Héand'' comes from the Latin Eugendus; and was given to the town either by the saint himself when founding a monastery, or by pilgrims bringing relics there. Population Twin towns Saint-Héand is twinned with Ingelfingen, Germany, since 1991. See also *Communes of the Loire department The following is a list of the 323 communes of the Loire department of France. The communes cooperate in the following intercommunalities (as of 2020):Communes of Loire (department) {{Loire-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pacific and Indian Oceans. Its Metropolitan France, metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea; overseas territories include French Guiana in South America, Saint Pierre and Miquelon in the North Atlantic, the French West Indies, and many islands in Oceania and the Indian Ocean. Due to its several coastal territories, France has the largest exclusive economic zone in the world. France borders Belgium, Luxembourg, Germany, Switzerland, Monaco, Italy, Andorra, and Spain in continental Europe, as well as the Kingdom of the Netherlands, Netherlands, Suriname, and Brazil in the Americas via its overseas territories in French Guiana and Saint Martin (island), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thales Group
Thales Group () is a French multinational company that designs, develops and manufactures electrical systems as well as devices and equipment for the aerospace, defence, transportation and security sectors. The company is headquartered in Paris' business district, La Défense, and its stock is listed on the Euronext Paris. Having been known as Thomson-CSF since its foundation in 1968, the company was rebranded ''Thales'' (named after the Greek philosopher Thales and pronounced , reflecting its pronunciation in French) in December 2000. A communication audit, launched in spring that year, highlighted Thomson-CSF's image deficit, particularly among the young French graduates it was seeking to recruit. The wish to liven up its image as well as the expansion of its business worldwide were cited among the reasons for the change. Thales is partially owned by the French State and operates in more than 56 countries. It had 80,000 employees and generated €18.4 billion in revenues in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camera Lens
A camera lens (also known as photographic lens or photographic objective) is an optical lens or assembly of lenses used in conjunction with a camera body and mechanism to make images of objects either on photographic film or on other media capable of storing an image chemically or electronically. There is no major difference in principle between a lens used for a still camera, a video camera, a telescope, a microscope, or other apparatus, but the details of design and construction are different. A lens might be permanently fixed to a camera, or it might be interchangeable with lenses of different focal lengths, apertures, and other properties. While in principle a simple convex lens will suffice, in practice a compound lens made up of a number of optical lens elements is required to correct (as much as possible) the many optical aberrations that arise. Some aberrations will be present in any lens system. It is the job of the lens designer to balance these and produce a desi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saint-Étienne
Saint-Étienne (; frp, Sant-Etiève; oc, Sant Estève, ) is a city and the prefecture of the Loire department in eastern-central France, in the Massif Central, southwest of Lyon in the Auvergne-Rhône-Alpes region. Saint-Étienne is the thirteenth most populated commune in France and the second most populated commune in Auvergne-Rhône-Alpes. Its metropolis (''métropole''), Saint-Étienne Métropole, is the third most populous regional metropolis after Grenoble-Alpes and Lyon. The commune is also at the heart of a vast metropolitan area with 497,034 inhabitants (2018), the eighteenth largest in France by population, comprising 105 communes. Its inhabitants are known as ''Stéphanois'' (masculine) and ''Stéphanoises'' (feminine). Long known as the French city of the "weapon, cycle and ribbon" and a major coal mining centre, Saint-Étienne is currently engaged in a vast urban renewal program aimed at leading the transition from the industrial city inherited from the 19th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Focal Length
The focal length of an optical system is a measure of how strongly the system converges or diverges light; it is the inverse of the system's optical power. A positive focal length indicates that a system converges light, while a negative focal length indicates that the system diverges light. A system with a shorter focal length bends the rays more sharply, bringing them to a focus in a shorter distance or diverging them more quickly. For the special case of a thin lens in air, a positive focal length is the distance over which initially collimated (parallel) rays are brought to a focus, or alternatively a negative focal length indicates how far in front of the lens a point source must be located to form a collimated beam. For more general optical systems, the focal length has no intuitive meaning; it is simply the inverse of the system's optical power. In most photography and all telescopy, where the subject is essentially infinitely far away, longer focal length (lower opti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lens Manufacturers
A lens is a transmissive optical device which focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while a compound lens consists of several simple lenses (''elements''), usually arranged along a common axis. Lenses are made from materials such as glass or plastic, and are ground and polished or molded to a desired shape. A lens can focus light to form an image, unlike a prism, which refracts light without focusing. Devices that similarly focus or disperse waves and radiation other than visible light are also called lenses, such as microwave lenses, electron lenses, acoustic lenses, or explosive lenses. Lenses are used in various imaging devices like telescopes, binoculars and cameras. They are also used as visual aids in glasses to correct defects of vision such as myopia and hypermetropia. History The word ''lens'' comes from '' lēns'', the Latin name of the lentil (a seed of a lentil plant), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photography Companies Of France
Photography is the visual art, art, application, and practice of creating durable images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is employed in many fields of science, manufacturing (e.g., photolithography), and business, as well as its more direct uses for art, film and video production, recreational purposes, hobby, and Mass communication, mass communication. Typically, a Lens (optics), lens is used to focus (optics), focus the light reflected or emitted from objects into a real image on the light-sensitive surface inside a camera during a timed Exposure (photography), exposure. With an electronic image sensor, this produces an Charge-coupled device, electrical charge at each pixel, which is Image processing, electronically processed and stored in a Image file formats, digital image file for subsequent display or processing. The result with photographic emulsion is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optics Manufacturing Companies
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of optical instruments, instruments that use or Photodetector, detect it. Optics usually describes the behaviour of visible light, visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. Most optical phenomena can be accounted for by using the Classical electromagnetism, classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of Ray (optics), rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
