35°46′33.1″N139°41′18.2″E / 35.775861°N 139.688389°E /35.775861; 139.688389
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TheNidec Copal Corporation (日本電産コパル株式会社,Nihon Densan Koparu Kabushiki-gaisha), orCopal, is a Japanese manufacturer of optical, electronic and mechanical equipment, primarily for thephotographic industry. It has been a subsidiary ofNidec Corporation since 1998, and was formerly known as theCopal Corporation. The company began operation in 1946, with small-scale production of photographic shutters;[1] these are still one of the company's best-known products.
In the 1960s the company began producing the well-known Copal Square vertically travelling metal bladefocal plane shutter, which was very successful and was used in cameras by many prominent manufacturers.
TheCopal Square-S, for example used in theKonica T3s (1973-1978)[2][3] and theNikkormat FT,[4] is very reliable. It works over a wide temperature range.[5] The electronically controlled CopalSquare E (1968) was used in the Yashica TL Electro X, the Canon EF, the Nikkormat EL. ForMinolta XE and theLeica R3 the Copal-Leitz ShutterCLS was developed in 1972. For the professionalNikon F4 built 1988 until 1996 the CopalSquare was developed and reached 1/8000 s and 1/250 s with flash.[4]
In 2020 Nidec Copal has round about 6,450 employees[6] and manufactures devices, that are used in automobiles, optical products andTablets beside shutters for digital cameras.[7][8]
