| 1935-10 |
Jinya Ohara founded Ohara Optical Glass Manufacturing (now Ohara Corporation) and started operations in Kamata, Tokyo |
| 1935-10 |
Jinya Ohara founded Ohara Optical Glass Manufacturing (now Ohara Corporation) and started operations in Kamata, Tokyo |
| 1936-11 |
|
| 1936-11 |
Start of optical glass melting |
| 1936-11 |
Start of optical glass melting business |
| 1944-02 |
|
| 1944-02 |
Reorganized into a corporation |
| 1944-02 |
Changed to Kabushiki Kaisha Obara |
| 1944-03 |
|
| 1944-03 |
Construction of Sagamihara Factory |
| 1944-03 |
Sagami Factory startup |
| 1946-03 |
|
| 1946-03 |
Relocation of headquarters to Sagamihara City, Kanagawa Prefecture |
| 1946-03 |
Headquarters relocated to Sagamihara City, Kanagawa Prefecture |
| 1954-05 |
|
| 1954-05 |
Start of platinum crucible melting |
| 1954-05 |
Start of platinum crucible melting business |
| 1958 |
开始发售耐冲击高硬度的透明玻璃陶瓷（NANOCERAM™） : 开始发售耐放射线光学玻璃 |
| 1958-10 |
|
| 1958-10 |
Start of lantern glass production |
| 1959-11 |
|
| 1959-11 |
Designated as export agent for CAI (Chicago Aircraft Industries) in the United States |
| 1961-01 |
|
| 1961-01 |
Start of continuous melting strip method production |
| 1962-10 |
|
| 1962-10 |
Acquisition of shares of Ashigara Optical Co., Ltd. |
| 1965-10 |
|
| 1965-10 |
Start of continuous melting direct press production |
| 1967-01 |
|
| 1967-01 |
Designated Bowns as export agent (Recono Optical) |
| 1969-07 |
|
| 1969-07 |
Our glass landed on the moon (carried on Apollo 11) |
| 1975-08 |
|
| 1975-08 |
Start of production of low-refractive-index, low-dispersion glass (S-FPL51) |
| 1976-05 |
|
| 1976-05 |
Start of production of glass beads |
| 1979-02 |
|
| 1979-05 |
|
| 1979-05 |
Start of production of Lantern DP (Direct Press Material): Start of production of Pentaprism DP products |
| 1981-08 |
|
| 1981-08 |
Establishment of Ohara Optical Glass Inc. (USA, now Ohara Corporation) |
| 1982-03 |
|
| 1982-03 |
Our glass mounted on the Space Shuttle Columbia |
| 1983-03 |
|
| 1983-03 |
Mass production of high-homogeneity glass for steppers (Δnd±0.5〜±1.0 × 10–6) |
| 1984-03 |
|
| 1984-03 |
Start of delivery of Cherenkov glass to the High Energy Physics Laboratory |
| 1985-05 |
|
| 1985-05 |
Company name changed to Ohara Corporation |
| 1987-01 |
|
| 1987-03 |
|
| 1987-05 |
|
| 1987-05 |
Establishment of Taiwan Ohara Optical Co., Ltd.: Start of production of ultraviolet (365nm) high-transparency glass: Establishment of OPC Co., Ltd. (now OPC Inc.) |
| 1988-06 |
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| 1988-08 |
|
| 1988-08 |
Full-scale production of aspheric molded projection elements: Start of crystallized glass production |
| 1989-09 |
|
| 1989-09 |
Introduction of 18-inch phase difference interferometer (ZYGO Mark IV) |
| 1990-01 |
|
| 1990-10 |
|
| 1990-10 |
Establishment of OHARA GmbH (Germany): Change of optical glass types |
| 1991-09 |
|
| 1991-10 |
|
| 1991-11 |
|
| 1991-11 |
Start of production of environmentally friendly optical glass |
| 1991-12 |
|
| 1991-12 |
Start of production of crystalline glass beads: Establishment of OHARA OPTICAL (M) SDN. BHD. (Malaysia): Introduction of ultra-precision spectrophotometer |
| 1992-01 |
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| 1992-03 |
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| 1992-03 |
Declaration of TQC implementation: Start of measurement services |
| 1993-03 |
|
| 1993-06 |
|
| 1993-06 |
Start of production of ultra-low expansion glass ceramics (ClearCeram™-Z): Start of production of mirror preforms for mold pressing |
| 1994-11 |
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| 1994-11 |
Start of production of glass ceramics for hard disk substrates |
| 1995-11 |
|
| 1995-11 |
Start of ACTIVE-21 (mid-term vision) |
| 1996-05 |
|
| 1996-10 |
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| 1996-10 |
Establishment of OHARA DISK (M) SDN. BHD. (Malaysia): Acquisition of ISO9002 certification for the hard disk division |
| 1997-03 |
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| 1997-06 |
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| 1997-10 |
|
| 1997-10 |
Eco-friendly production of all 112 recommended types of optical glass at the time: Start of production of glass disks for magnetic head flying height measurement: Acquisition of ISO9002 certification for optical glass and special glass divisions |
| 1998-04 |
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| 1998-10 |
|
| 1998-10 |
Obtained ISO 9001 certification: Started production of low-refractive index, low-density glass for glasses |
| 1999-01 |
|
| 1999-07 |
|
| 1999-07 |
Our optical glass installed in Subaru Telescope's primary focus camera "SC": Started production of glass substrates for DWDM filters |
| 2000-01 |
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| 2000-04 |
|
| 2000-10 |
|
| 2000-10 |
Started production of low-elasticity glass: Obtained ISO 14001 certification: Started contracted service for refractive index measurement in vacuum ultraviolet region |
| 2000-11 |
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| 2001-11 |
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| 2001-11 |
聯一小原光学（東莞）有限公司（中国）設立（合弁） |
| 2002-05 |
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| 2002-06 |
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| 2002-12 |
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| 2002-12 |
小原光學（香港）有限公司設立 : 大規模連続熔解開始 : 小原光学（中山）有限公司（中国）設立 |
| 2004-11 |
|
| 2004-11 |
Start of Gasoline Campaign (Business Innovation) |
| 2005-10 |
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| 2005-10 |
Listed on the First Section of the Tokyo Stock Exchange |
| 2006-07 |
|
| 2006-11 |
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| 2006-11 |
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| 2006-11 |
Joined the Japan Business Federation: Started production of eco-glass for fiber (endoscope, etc.) |
| 2007-01 |
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| 2007-02 |
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| 2007-05 |
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| 2007-09 |
|
| 2007-09 |
Completed head office building: Started production of low-fluorescence glass (for microscopes, etc.): Implemented stock split: Equipped the ultra-low expansion glass ceramic (ClearCeram™-Z) on the lunar orbiter "Kaguya (SELENE)" |
| 2008-03 |
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| 2008-07 |
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| 2008-07 |
Acquisition of treasury stock: Made Ohara Quartz Co., Ltd. a consolidated subsidiary |
| 2010-03 |
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| 2010-11 |
|
| 2011-03 |
|
| 2011-03 |
華光小原光学材料（襄陽）有限公司（中国）設立（合弁） |
| 2012-03 |
|
| 2012-08 |
|
| 2012-08 |
Established Taiwan Ohara Optical Materials Co., Ltd.: Equipped Subaru Telescope's primary focus camera "HSC" with highly homogeneous optical glass |
| 2013-05 |
|
| 2013-05 |
Launched lithium-ion conductive glass ceramic (LICGC™) |
| 2014-02 |
|
| 2014-03 |
|
| 2014-12 |
|
| 2014-12 |
Withdrew from the hard disk glass substrate business: The ultra-low expansion glass ceramic (ClearCeram™-Z) adopted in the large astronomical telescope "TMT": Our glass used in the separation camera of "Hayabusa2" |
| 2015-03 |
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| 2015-10 |
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| 2015-12 |
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| 2015-12 |
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| 2015-12 |
|
| 2015-12 |
Started mass production of aspheric glass mold lenses: Celebrated 80th anniversary: Launched impact-resistant, high-hardness clear glass ceramics (NanoCeram™): Launched radiation-resistant optical glass: Started sales of lithium-ion conductive glass ceramics (LICGCSP-01) |
| 2016-01 |
|
| 2016-08 |
|
| 2016-08 |
Impact-resistant high-hardness transparent microcrystalline glass (NANOCERAM™) used in high-end filter lenses with replaceable lenses: All-solid-state batteries using lithium-ion conductive microcrystalline glass (LICGC™) prototypes driven in -30°C environment |
| 2017-05 |
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| 2017-12 |
|
| 2017-12 |
Launched optical glass material for vehicle-mounted cameras: The ultra-low expansion glass ceramic (ClearCeram™-Z) adopted in the ultra-low altitude satellite technology test vehicle "Tsubame (SLATS)" |
| 2017-12 |
World's first sale of optical glass material for vehicle-mounted cameras: Ultra-low expansion microcrystalline glass (CLEARCERAM™-Z) applied to the ultra-low altitude satellite technology test machine "燕 (SLATS)" |
| 2018-06 |
|
| 2018-09 |
|
| 2018-09 |
Participated in NEDO project for advanced and innovative battery material evaluation technology development (Phase 2): New factory for aspheric glass mold lenses started operation |
| 2018-09 |
参加NEDO项目先进与革新蓄电池材料评价技术开发项目（第2期） |
| 2019-02 |
|
| 2019-02 |
|
| 2019-02 |
The ultra-low expansion glass ceramic (ClearCeram™-Z) adopted in Japan's largest telescope "Seimei": Started sales of lithium-ion conductive glass ceramics (LICGC™PW-01) |
| 2020-03 |
|
| 2020-11 |
|
| 2020-11 |
Confirmed that lithium-ion conductive glass ceramics (LICGC™PW-01) improve the lifespan of lithium-ion batteries: Opened Ohara Oita Sales Office |
| 2021-09 |
|
| 2021-09 |
Our optical glass used in NASA's Mars rover "Perseverance" |
| 2022-03 |
|
| 2022-03 |
Impact-resistant, high-hardness clear glass ceramics (NanoCeram™) adopted as camera protector for ultra-small optical satellite "KITSUNE" |
| 2023-09 |
|
| 2023-09 |
Impact-resistant, high-hardness clear glass ceramics (NanoCeram™) adopted as high-strength display protection glass for docomo select smartphones |
| 2024-01 |
|
| 2024-01 |
Our optical glass adopted in small lunar landing demonstration vehicle "SLIM" for navigation and spectroscopic cameras |
| 2025-01 |
|
| 2025-01 |
Lithium-ion conductive glass ceramics (LICGC™SP-01) used in the humidity fluctuation battery at the National Institute of Advanced Industrial Science and Technology |
