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Topcon
is a Japanese manufacturer of optical equipment for ophthalmology and surveying. History 1930s TOPCON was established in September 1932 based the merger of the surveying instruments division of K. Hattori & Co., Ltd. (now known as Seiko Holdinge Corporation) in order to manufacture the optical instruments for the Japanese Army. Initially, the company produced surveying instruments, binoculars and cameras, as well as sniper scopes used mainly by the Army. In April 1933, TOPCON built their head offices and main factory at 180, Shimura-motohasunuma-cho, Itabashi-ku, Tokyo. 1940s In August 1945, TOPCON temporalily closed their factories after the end of World War II, but soon gained the authorization from the Tokyo Governor to convert the factory for production of civil products. By the end of the year, the factory reopened to manufacture binoculars and surveying instruments. They established Yamagata Kikai Kyogo Kabushikikaisha (currently Topcon Yamagata Co., Ltd.) in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sokkia
Sokkia Co., Ltd. was founded in 1920 as Sokkisha in Japan. It makes measurement instruments for the surveying, construction and industrial measurement industries. In 2008 Sokkia was acquired by Topcon, but still maintains a separate brand. History In the beginning, the company was called Sokkisha Company and was founded by a group of 13 people. It started with manufacturing transits in a small workshop in Tokyo in 1920, At first limited to the Japanese market, Sokkisha began to develop precision measuring instruments and quickly became a popular manufacturer in Japan. The worldwide expansion started with the United States. The American company Lietz became the exclusive distributor for Sokkisha instruments in the 1970s. In 1984 Sokkisha took over Lietz and becoming the world's largest manufacturer of surveying and measuring instruments. In the early 1990s, Sokkisha started a corporate identity project to improve and expand the company's global marketing. The result of this proje ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Through-the-lens Metering
In photography, through-the-lens metering (TTL metering) refers to a feature of cameras whereby the intensity of light reflected from the scene is measured through the lens; as opposed to using a separate metering window or external hand-held light meter. In some cameras various TTL metering modes can be selected. This information can then be used to set the optimal film or image sensor exposure ( average luminance), it can also be used to control the amount of light emitted by a flash unit connected to the camera. Description Through-the-lens metering is most often associated with single-lens reflex (SLR) cameras. In most film and digital SLRs, the light sensor(s) for exposure metering are incorporated into the pentaprism or pentamirror, the mechanism by which a SLR allows the viewfinder to see directly through the lens. As the mirror is flipped up, no light can reach there during exposure, the necessary amount of exposure needs to be determined before the actual exposure. Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lensmeter
A lensmeter or lensometer (sometimes even known as focimeter or vertometer), is an optical instrument used in ophthalmology. It is mainly used by optometrists and opticians to measure the back or front vertex power of a spectacle lens and verify the correct prescription in a pair of eyeglasses, to properly orient and mark uncut lenses, and to confirm the correct mounting of lenses in spectacle frames. Lensmeters can also verify the power of contact lenses, if a special lens support is used. The parameters appraised by a lensmeter are the values specified by an ophthalmologist or optometrist on the patient's prescription: sphere, cylinder, axis, add, and in some cases, prism. The lensmeter is also used to check the accuracy of progressive lenses, and is often capable of marking the lens center and various other measurements critical to proper performance of the lens. It may also be used prior to an eye examination to obtain the last prescription the patient was given, in order ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Company
A public company is a company whose ownership is organized via shares of share capital, stock which are intended to be freely traded on a stock exchange or in over-the-counter (finance), over-the-counter markets. A public (publicly traded) company can be listed on a stock exchange (listing (finance), listed company), which facilitates the trade of shares, or not (unlisted public company). In some jurisdictions, public companies over a certain size must be listed on an exchange. In most cases, public companies are ''private'' enterprises in the ''private'' sector, and "public" emphasizes their reporting and trading on the public markets. Public companies are formed within the legal systems of particular states and so have associations and formal designations, which are distinct and separate in the polity in which they reside. In the United States, for example, a public company is usually a type of corporation, though a corporation need not be a public company. In the United Kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mergers And Acquisitions
Mergers and acquisitions (M&A) are business transactions in which the ownership of a company, business organization, or one of their operating units is transferred to or consolidated with another entity. They may happen through direct absorption, a merger, a tender offer or a hostile takeover. As an aspect of strategic management, M&A can allow enterprises to grow or downsize, and change the nature of their business or competitive position. Technically, a is the legal consolidation of two business entities into one, whereas an occurs when one entity takes ownership of another entity's share capital, equity interests or assets. From a legal and financial point of view, both mergers and acquisitions generally result in the consolidation of assets and liabilities under one entity, and the distinction between the two is not always clear. Most countries require mergers and acquisitions to comply with antitrust or competition law. In the United States, for example, the Cl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medium Format (film)
Medium format has traditionally referred to a film format in photography and the related cameras and equipment that use film. Nowadays, the term applies to film and digital cameras that record images on media larger than the used in 35 mm photography (though not including 127 sizes), but smaller than (which is considered large format photography). In digital photography, medium format refers either to cameras adapted from medium-format film photography uses or to cameras making use of sensors larger than that of a 35 mm film frame. Some of the benefits of using medium-format digital cameras include higher resolution sensors, better low-light capabilities compared to a traditional 35mm DSLR, and a wider dynamic range. Characteristics Medium-format cameras made since the 1950s are generally less automated than smaller cameras made at the same time. For example, autofocus became available in consumer 35 mm cameras in 1977, but did not reach medium forma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camera
A camera is an instrument used to capture and store images and videos, either digitally via an electronic image sensor, or chemically via a light-sensitive material such as photographic film. As a pivotal technology in the fields of photography and videography, cameras have played a significant role in the progression of visual arts, media, entertainment, surveillance, and scientific research. The invention of the camera dates back to the 19th century and has since evolved with advancements in technology, leading to a vast array of types and models in the 21st century. Cameras function through a combination of multiple mechanical components and principles. These include exposure control, which regulates the amount of light reaching the sensor or film; the lens, which focuses the light; the viewfinder, which allows the user to preview the scene; and the film or sensor, which captures the image. Several types of camera exist, each suited to specific uses and offering unique cap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toshiba
is a Japanese multinational electronics company headquartered in Minato, Tokyo. Its diversified products and services include power, industrial and social infrastructure systems, elevators and escalators, electronic components, semiconductors, hard disk drives, printers, batteries, lighting, as well as IT solutions such as quantum cryptography. It was formerly also one of the biggest manufacturers of personal computers, consumer electronics, home appliances, and medical equipment. The Toshiba name is derived from its former name, Tokyo Shibaura Denki K.K. which in turn was a 1939 merger between Shibaura Seisaku-sho (founded in 1875) and Tokyo Denki (founded in 1890). The company name was officially changed to Toshiba Corporation in 1978. A technology company with a long history and sprawling businesses, Toshiba is a household name in Japan and has long been viewed as a symbol of the country's technological prowess post-World War II. As a semiconductor company and the i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Single-lens Reflex Camera
A digital single-lens reflex camera (digital SLR or DSLR) is a digital camera that combines the optics and mechanisms of a single-lens reflex camera with a solid-state image sensor and digitally records the images from the sensor. The reflex design scheme is the primary difference between a DSLR and other digital cameras. In the reflex design, light travels through the lens and then to a mirror that alternates to send the image to either a prism, which shows the image in the optical viewfinder, or the image sensor when the shutter release button is pressed. The viewfinder of a DSLR presents an image that will not differ substantially from what is captured by the Image sensor, camera's sensor, as it presents it as a direct optical view through the main camera lens rather than showing an image through a separate secondary lens. DSLRs largely replaced film-based SLRs during the 2000s. Major camera manufacturers began to transition their product lines away from DSLR cameras to mirror ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tokyo Stock Exchange
The , abbreviated as Tosho () or TSE/TYO, is a stock exchange located in Tokyo, Japan. The exchange is owned by Japan Exchange Group (JPX), a holding company that it also lists (), and operated by Tokyo Stock Exchange, Inc., a wholly owned subsidiary of JPX. JPX was formed from merger of Tokyo Stock Exchange Group, Inc. with Osaka Securities Exchange Co., Ltd. (now Osaka Exchange, Inc.); the merger process began in July 2012, when said merger was approved by the Japan Fair Trade Commission. JPX itself was launched on January 1, 2013. Overview The TSE is incorporated as a (joint-stock company) with nine directors, four auditors and eight executive officers. Its headquarters are located at 2-1 Nihonbashi- Kabutochō, Chūō, Tokyo which is the largest financial district in Japan. The main indices tracking the stock market of TSE are the Nikkei 225 index of companies selected by the '' Nihon Keizai Shimbun'' (Japan's largest business newspaper), the TOPIX index based on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yamagata Prefecture
is a Prefectures of Japan, prefecture of Japan located in the Tōhoku region of Honshu. It has a population of 1,005,926 (1 February 2025) and an area of 9,325 Square kilometre, km2 (3,600 Square mile, sq mi). Its neighbours are Akita Prefecture to the north, Miyagi Prefecture to the east, Fukushima Prefecture to the south, and Niigata Prefecture to the southwest. The capital and largest city is Yamagata, Yamagata, Yamagata, with other major cities being Tsuruoka, Yamagata, Tsuruoka, Sakata, Yamagata, Sakata and Yonezawa, Yamagata, Yonezawa. The prefecture is located on Japan's western Sea of Japan coast and its borders with neighboring prefectures are formed by various mountain ranges, with 17% of its total land area being designated as List of national parks of Japan, Natural Parks. Yamagata Prefecture formed the southern half of the historic Dewa Province with Akita Prefecture and is home to the Three Mountains of Dewa, which includes the Haguro Five-story Pagoda, a recognis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Governor Of Tokyo
The is the head of government of Tokyo. In 1943, upon the unification of Tokyo City and Tokyo Prefecture (1868–1943), Tokyo Prefecture into Tokyo Metropolitan Government, the position of Governor was created. Previously, the prefecture had a Governor while the City had Mayors of Tokyo, a Mayor. The current title was adopted in 1947 due to the enactment of the Local Autonomy Law. Overview The Governor of Tokyo is the head of the Tokyo Metropolitan Government, and is elected by the citizens of Tokyo, Tokyo Metropolis every four years, most recently in the 2024 Tokyo gubernatorial election. As Tokyo has the largest economy and population in the country, government policies can greatly affect national affairs, giving a governor significant influence in the country and a louder voice in the National Governors' Association. The annual budget of Tokyo is about 13 trillion yen, ten times that of other prefectures and comparable to the national budget of Indonesia, so a governor als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
