Dr. Takaaki Miyashita Profile

Dr. Takaaki Miyashita

Manager at Ricoh Co Ltd

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Author

Publications (5)

SPIE Journal Paper | 1 July 2009

Wavefront aberration measurement technology for microlenses using a Mach-Zehnder interferometer with effective apertures

Takaaki Miyashita, Masahiko Kato, Jun Ohta

OE, Vol. 48, Issue 07, 073609, (July 2009) https://doi.org/10.1117/12.10.1117/1.3153327

KEYWORDS: Microlens, Wavefront aberrations, Interferometers, Image sensors, Microlens array, Optical engineering, Objectives, Wavefronts, Collimators

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Proceedings Article | 27 August 2005 Paper

International standards for metrology of microlens arrays

Takaaki Miyashita

Proceedings Volume 5858, 585802 (2005) https://doi.org/10.1117/12.612827

KEYWORDS: Microlens, Wavefront aberrations, Interferometers, Microscopes, Standards development, Microlens array, Objectives, Optical testing, Mach-Zehnder interferometers, Laser beam diagnostics

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Proceedings Article | 8 September 2004 Paper

Comparative study of glass and plastic refractive microlenses and their fabrication techniques

Heidi Ottevaere, Royall Cox, Hans Peter Herzig, Takaaki Miyashita, Kris Naessens, Mohammad Taghizadeh, Reinhard Volkel, H.J. Woo, Hugo Thienpont

Proceedings Volume 5453, (2004) https://doi.org/10.1117/12.546709

KEYWORDS: Microlens, Photovoltaics, Reactive ion etching, Fabrication, Digital Light Processing, Lithography, Printing, Laser ablation, Geology, Mining

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Proceedings Article | 2 August 2004 Paper

Equivalence between the software-determined and the hardware-determined effective numerical aperture in the interferometrical measuring of microlens

Masahiko Kato, Takaaki Miyashita, Kenjiro Hamanaka, Satoshi Ishihara, Eiichi Sato, Tadashi Morokuma

Proceedings Volume 5532, (2004) https://doi.org/10.1117/12.559837

KEYWORDS: Microlens, Wavefront aberrations, Image sensors, Interferometers, Interferometry, Objectives, Diffraction, Point spread functions, Beam propagation method, Wave propagation interference

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Proceedings Article | 2 August 2004 Paper

Wavefront aberration measurement technology for microlens using the Mach-Zehnder interferometer provided with a projected aperture

Takaaki Miyashita, Kenjiro Hamanaka, Masahiko Kato, Satoshi Ishihara, Hiroyasu Sato, Eiichi Sato, Tadashi Morokuma

Proceedings Volume 5532, (2004) https://doi.org/10.1117/12.559872

KEYWORDS: Microlens, Wavefront aberrations, Interferometers, Mach-Zehnder interferometers, Microlens array, Near field diffraction, Phase shifts, Prototyping, Standards development, Collimators

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