Pentax

The company was founded as Asahi Kogaku Goshi Kaisha in November 1919 by Kumao Kajiwara, at a shop in the Toshima suburb of Tokyo, and began producing spectacle lenses (which it still manufactures).[4] In 1938 it changed its name to Asahi Optical Co., Ltd. (旭光学工業株式会社, Asahi Kōgaku Kōgyō Kabushiki-gaisha), and by this time it was also manufacturing camera/cine lenses. In the lead-up to World War II, Asahi Optical devoted much of its time to fulfilling military contracts for optical instruments. At the end of the war, Asahi Optical was disbanded by the occupying powers, being allowed to re-form in 1948. The company resumed its pre-war activities, manufacturing binoculars and consumer camera lenses for Konishiroku and Chiyoda Kōgaku Seikō (later Konica and Minolta respectively).

The period around 1950 marked the return of the Japanese photographic industry to the vigorous level of the late 1930s, and its emergence as a major exporter. The newly reborn industry had sold many of its cameras to the occupation forces (having had far more disposable income than the Japanese), which were well received.[5] The Korean War saw a huge influx of journalists and photographers to the Far East, where they were impressed by lenses from companies such as Nikon and Canon for their Leica rangefinder cameras, and also by bodies by these and other companies to supplement and replace the Leica and Contax cameras they were using.

Zeiss Ikon Pentax prototype with a Carl Zeiss Jena Tessar lens

In 1952 Asahi Optical introduced its first camera, the Asahiflex (the first Japanese SLR using 35mm film). The name "Pentax" was originally a registered trademark of the East German VEB Zeiss Ikon (from "Pentaprism" and "Contax") and acquired by the Asahi Optical company in 1957. Since then the company has been primarily known for its photographic products, distributed 35mm equipment under the name "Asahi Pentax" and medium format 120 6x7cm equipment under the sub brand "Pentax 6x7" (from 1969 to 1990) and "Pentax 67" (from 1990 to 1999). Equipment was exported to the United States from the 1950s until the mid-1970s by Honeywell Corporation and branded as "Heiland Pentax" and later "Honeywell Pentax". The company was renamed Pentax Corporation in 2002. It was one of the world's largest optical companies, producing still cameras, binoculars, spectacle lenses, and a variety of other optical instruments. In 2004, Pentax had about 6000 employees.

In December 2006, Pentax started the process of merging with Hoya Corporation to form 'Hoya Pentax HD Corporation'.[6] Hoya's primary goal was to strengthen its medical-related business by taking advantage of Pentax's technologies and expertise in the field of endoscopes, intraocular lenses, surgical loupes, biocompatible ceramics, etc. It was speculated that Pentax's camera business could be sold off after the merger. A stock swap was to be completed by October 1, 2007 but the process was called off on April 11, 2007. Pentax president Fumio Urano resigned over the matter, with Takashi Watanuki taking over as president of Pentax.[7] However, despite Watanuki's previously stated opposition to a Hoya merger, on May 16 it was reported that Pentax had accepted "with conditions" a sweetened offer from Hoya, according to a source familiar with the matter.[8] Pentax was under increasing pressure from its major shareholders, Sparx Asset Management in particular, to accept Hoya's bid.

On August 6, 2007, Hoya completed a friendly public tender offer for Pentax and acquired 90.59% of the company.[9] On August 14, 2007, the company became a consolidated subsidiary of Hoya. On October 29, 2007, Hoya and Pentax announced that Pentax would merge with and into Hoya effective on March 31, 2008.[10] Hoya closed the Pentax-owned factory in Tokyo, and moved all manufacturing facilities to Cebu, Philippines and Hanoi, Vietnam.[11]

Japanese optical glass-maker Hoya Corporation stated on July 1, 2011, that it would sell its Pentax camera business to copier and printer maker Ricoh, in a deal the Nikkei business daily reported was worth about 10 billion yen ($124.2 million).[12] On July 29, 2011, Hoya transferred its Pentax imaging systems business to a newly established subsidiary called Pentax Imaging Corporation. On October 1, 2011, Ricoh acquired all shares of Pentax Imaging Corp. and renamed the new subsidiary Pentax Ricoh Imaging Company, Ltd.[13] Hoya will continue to use the Pentax brand name for their medical related products such as endoscopes. On August 1, 2013, the company name was changed to Ricoh Imaging Company Ltd.[14]

• Pentax Industrial Instruments Co., Ltd.
• Pentax Optotech Co., Ltd.
• Pentax Service, Co., Ltd.
• Pentax Fukushima Co., Ltd.
• Pentax Tohoku Co., Ltd.
• Pentax Trading (Shanghai) Co.,Ltd.
• Pentax (Shanghai) Corporation
• Pentax Hong Kong Ltd.
• Pentax Cebu Philippines Corporation
• Pentax VN Co., Ltd.

• Pentax Europe GmbH
• Pentax U.K. Ltd.
• Pentax France S.A.
• Pentax Schweiz AG
• Pentax Scandinavia AB
• Pentax Nederland B.V.
• Pentax Europe n.v.

• Pentax of America Inc. (Pentax Medical Company)
• Pentax of America Inc. (Pentax Imaging Company)
• Pentax of America Inc.
• Pentax Medical Company
• Pentax Imaging Company
• Microline Pentax Inc.
• Pentax Canada Inc.
• KayPentax (Pentax Medical Company)
• Pentax Teknologies.