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Ernst Leitz GmbH
Ernst Leitz GmbH was a German corporation based in Wetzlar, a German centre for optics as well as an important location for the precision engineering industry. History Carl Kellner (optician), Carl Kellner, mechanic and self-taught mathematician, published his treatise (''The orthoscopic ocular, a newly invented achromatic lens combination'') in 1849, describing a new optical formula he had developed. The ocular was capable of rendering an image with the correct perspective, free of the distortions typical of other microscopes at that time. Following his early death on 13 May 1855, his widow continued the business he had left behind, the (optical institute). The fine mechanic Ernst Leitz I (1843–1920) from Baden arrived at Wetzlar in 1864 and entered service at the Optisches Institut. He was trained as an instrument maker for physical and chemical apparatus and had several years' experience making watches in Switzerland. Initially, Leitz was a part shareholder of the busin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetzlar
Wetzlar () is a city in the state of Hesse, Germany. It is the twelfth largest city in Hesse with currently 55,371 inhabitants at the beginning of 2019 (including second homes). As an important cultural, industrial and commercial center, the university town is one of the ten regional centers in the state of Hesse. A former free imperial city, it gained much of its fame as the seat of the Imperial Supreme Court (''Reichskammergericht'') of the Holy Roman Empire. Located 51 kilometers north of Frankfurt, at 8° 30′ E, 50° 34′ N, Wetzlar straddles the river Lahn and is on the German Timber-Frame Road, which passes mile upon mile of half-timbered houses. Historically, the city has acted as the hub of the Lahn-Dill-Kreis on the north edge of the Taunus. Tourists know the city for its ancient town and its medieval Catholic/Protestant shared Wetzlar Cathedral, cathedral of St. Mary. Notable architectural features include the Eisenmarkt and the steep gradients and tightly packed str ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leipzig
Leipzig (, ; ; Upper Saxon: ; ) is the most populous city in the States of Germany, German state of Saxony. The city has a population of 628,718 inhabitants as of 2023. It is the List of cities in Germany by population, eighth-largest city in Germany and is part of the Central German Metropolitan Region. The name of the city is usually interpreted as a Slavic term meaning ''place of linden trees'', in line with many other Slavic placenames in the region. Leipzig is located about southwest of Berlin, in the southernmost part of the North German Plain (the Leipzig Bay), at the confluence of the White Elster and its tributaries Pleiße and Parthe. The Leipzig Riverside Forest, Europe's largest intra-city riparian forest, has developed along these rivers. Leipzig is at the centre of Neuseenland (''new lake district''). This district has Bodies of water in Leipzig, several artificial lakes created from former lignite Open-pit_mining, open-pit mines. Leipzig has been a trade city s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leica Biosystems
Leica Biosystems, founded 1872 as Precision Engineering, is a medical devices company that develops and supplies clinical diagnostics to the pathology market. It is also a research, instrument, and medical device company as well as a division of Danaher Corporation. Company Description The company has headquarters in Germany with operations in the United Kingdom, Netherlands, Australia, India, China, Singapore, Mexico, and the United States (California, Illinois, and Ohio). A research and development facility concentrating on companion diagnostics for cancer drugs has been in operation in Danvers, Massachusetts Danvers is a New England town, town in Essex County, Massachusetts, United States, located on the Danvers River near the northeastern coast of Massachusetts. The suburb is a fairly short ride from Boston and is also in close proximity to the beach ... since August 2012.Seiffert, Don“Leica Biosystems plans to expand R&D facility in Mass.”Boston Business Journal. Feb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leica Microsystems
Leica Microsystems GmbH is a German microscope manufacturing company. It is a manufacturer of optical microscopes, equipment for the preparation of microscopic specimens and related products. There are ten plants in eight countries with distribution partners in over 100 countries. Leica Microsystems emerged in 1997 out of a 1990 merger between Wild-Leitz, headquartered in Heerbrugg Switzerland, and Cambridge Instruments of Cambridge England. The merger of those two umbrella companies created an alliance of the following 8 individual manufacturers of scientific instruments. American Optical Scientific Products, Carl Reichert Optische Werke AG, R.Jung, Bausch and Lomb Optical Scientific Products Division, Cambridge Instruments, E.Leitz Wetzlar, Kern & Co., and Wild Heerbrugg AG, bringing much-needed modernization and a broader degree of expertise to the newly created entity called Leica Holding B.V. group. In 1997 the name was changed to Leica Microsystems and is a wholly-owned e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leica Geosystems
Leica Geosystems (formerly known as Wild Heerbrugg or just Wild) based in eastern Switzerland produces products and systems for surveying and geographical measurement ( geomatics). Its products employ a variety of technologies including GPS satellite navigation and laser rangefinders to enable users to model existing structures, terrains in computer based systems to high accuracies, often under 1 cm. History The brand Leica, better known for Leica Cameras, was formed on 2 April 1990 after the merger of several companies. In 2005, the company was acquired by Hexagon AB. Leica was listed on the Swiss stock exchange until the 7 August 2006 which saw the cancellation of all publicly held registered shares in Leica Geosystems Holdings Ltd and delisting of all listed registered shares of a par value of CHF 50. Leica Geosystems Geospatial Imaging is a Strategic Member in the Open Geospatial Consortium since 2008. Strategic Membership is the highest level of membership in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Binoculars
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. Most binoculars are sized to be held using both hands, although sizes vary widely from opera glasses to large pedestal-mounted military models. Unlike a (monocular) telescope, binoculars give users a stereopsis, three-dimensional image: each eyepiece presents a slightly different image to each of the viewer's eyes and the parallax allows the visual cortex to generate an depth perception, impression of depth. Optical design evolution Galilean Almost from the invention of the telescope in the 17th century the advantages of mounting two of them side by side for binocular vision seems to have been explored. Most early binoculars used Galilean telescope, Galilean optics; that is, they used a convex lens, convex objective (optics), objective and a concave lens, concave eyepi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trinovid
Trinovid is the protected model designation of a roof prism binoculars series from the company Leitz (optics) (since 1986 Leica Camera) based in Wetzlar Wetzlar () is a city in the state of Hesse, Germany. It is the twelfth largest city in Hesse with currently 55,371 inhabitants at the beginning of 2019 (including second homes). As an important cultural, industrial and commercial center, the un ..., a German centre for optics as well as an important location for the precision engineering industry. The Trinovid binoculars were introduced in 1958 based on a patent request filed in 1953 and featured: # special pentaprisms (so-called Uppendahl roof prism systems that allow the construction of compact optical instruments); # a built-in diopter adjustment, and # a fully internal focusing system, that moves internal optical lenses to prevent intrusion of dust and moisture into the binocular body with centrally located adjusting means to compensate for vision differences of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opaque Projector
The opaque projector, or episcope is a device which displays opaque materials by shining a bright lamp onto the object from above. The episcope must be distinguished from the diascope, which is a projector used for projecting images of transparent objects (such as films), and from the epidiascope, which is capable of projecting images of both opaque and transparent objects. A system of mirrors, prisms and/or imaging lenses is used to focus an image of the material onto a viewing screen. Because they must project the reflected light, opaque projectors require brighter bulbs and larger lenses than overhead projectors. Care must be taken that the materials are not damaged by the heat generated by the light source. Opaque projectors are not as common as the overhead projector. Opaque projectors are typically used to project images of book pages, drawings, mineral specimens, leaves, etc. They have been produced and marketed as artists' enlargement tools to allow images to be transfer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benelux
The Benelux Union (; ; ; ) or Benelux is a politico-economic union, alliance and formal international intergovernmental cooperation of three neighbouring states in Western Europe: Belgium, the Netherlands, and Luxembourg. The name is a portmanteau formed from joining the first few letters of each country's name and was first used to name the customs agreement that initiated the union (signed in 1944). It is now used more generally to refer to the geographic, economic, and cultural grouping of the three countries. The Benelux is an economically dynamic and densely populated region, with 5.6% of the European population (29.55 million residents) and 7.9% of the joint EU GDP (€36,000/resident) on 1.7% of the whole surface of the EU. In 2015, 37% of the total number of EU cross-border workers worked in the Benelux; 35,000 Belgian residents work in Luxembourg, while 37,000 others cross the border to work in the Netherlands each day. In addition, 12,000 Dutch and close to a thous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ostarbeiter
' (, "Eastern worker") was a Nazi German designation for foreign slave workers gathered from occupied Central and Eastern Europe to perform forced labor in Germany during World War II. The Germans started deporting civilians at the beginning of the war and began doing so at unprecedented levels following Operation Barbarossa in 1941. They apprehended from the newly-formed German districts of Reichskommissariat Ukraine, District of Galicia (itself attached to the General Government), and Reichskommissariat Ostland. These areas comprised German-occupied Poland and the conquered territories of the Soviet Union. According to Pavel Polian, although the from most occupied territories were predominantly men, of the "eastern workers" taken from occupied Soviet territories over 50% were women, and of those from Poland nearly 30% were women. Eastern workers included ethnic Ukrainians, Poles, Belarusians, Russians, Armenians, Tatars, and others. Estimates of the number of range be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
