Mr. Osamu Koyama Profile

Osamu Koyama

at Canon Inc

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 22 June 2006

A low-noise durable transmissive stamper for multi-layer discs using phase transition mastering

Yukari Aoki, Kuniyuki Morita, Kyosuke Deguchi, Toshimori Miyakoshi, Yasuyuki Miyaoka, Tomoyuki Hiroki, Osamu Koyama

Proc. SPIE. 6282, Optical Data Storage 2006

KEYWORDS: Lithography, Electron beam lithography, Sputter deposition, Glasses, Ultraviolet radiation, Atomic force microscopy, Oxygen, Transmission electron microscopy, Photoresist materials, Photoresist developing

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Proceedings Article | 22 June 2006

A study of near field recording optics for cover-layer incident dual-layer disc with an NA=1.45 hemispherical solid immersion lens

Osamu Koyama, Haruhiko Horiguchi, Chihiro Nagura, Koichiro Nishikawa, Osamu Nagatsuka

Proc. SPIE. 6282, Optical Data Storage 2006

KEYWORDS: Actuators, Monochromatic aberrations, Wavefront aberrations, Lens design, Collimators, Solids, Liquid crystals, Servomechanisms, Tolerancing, Near field optics

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Proceedings Article | 9 September 2004

A DWDD disc of 27-Gbit/in2 land-groove recording using a blue laser and side-wall-annealing technique

Jun Sumioka, Yukari Aoki, Kazuoki Hongu, Yasushi Hozumi, Osamu Koyama

Proc. SPIE. 5380, Optical Data Storage 2004

KEYWORDS: Modulation, Annealing, Magnetism, Semiconductor lasers, Objectives, Molybdenum, Optical storage, Laser optics, Pulsed laser operation, Multiphoton fluorescence microscopy

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Proceedings Article | 9 September 2004

System tolerance of 64-mm-diameter magneto-optical disks with a 4.7-Gigabyte capacity

Yasuhito Tanaka, Goro Fujita, Tetsuhiro Sakamoto, Takeshi Miki, Shingo Imanishi, Yuji Akiyama, Kazuhiko Fujiie, Yasushi Hozumi, Yasuyuki Miyaoka, Kazuoki Hongu, Osamu Koyama

Proc. SPIE. 5380, Optical Data Storage 2004

KEYWORDS: Modulation, Annealing, Magnetism, Frequency modulation, Objectives, Servomechanisms, Reactive ion etching, Molybdenum, Signal detection, Tolerancing

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Proceedings Article | 16 September 2003

15-Gbit/in2 recording on a DWDD disc using a land/groove substrate with a red laser enabled by a side-wall annealing process

Takeshi Miki, Shinichi Kai, Yasuyuki Takeshita, Goro Fujita, Kazuhiko Fujiie, Osamu Koyama, Yasuyuki Miyaoka, Tomoyuki Hiroki, Yasushi Hozumi, Masaru Kikuchi, Tsutomu Shiratori

Proc. SPIE. 5069, Optical Data Storage 2003

KEYWORDS: Annealing, Magnetism, Semiconductor lasers, Objectives, Optical tracking, Compact discs, Servomechanisms, Magnetic sensors, Molybdenum, Tolerancing

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