Mr. Gaku Takeuchi Profile

Gaku Takeuchi

Chief Specialist at Topcon Corp

SPIE Involvement:

Author

Publications (4)

Proceedings Article | 18 April 2005 Paper

Ex-vivo crystalline lens optical quality measurements during simulated accommodation using a single pass PSF measurement system

David Borja, Gaku Takeuchi, Katsuhiko Kobayashi, Fabrice Manns, Jean Marie Parel

Proceedings Volume 5688, (2005) https://doi.org/10.1117/12.600618

KEYWORDS: Modulation transfer functions, Point spread functions, Crystals, Quality measurement, Sclera, Relays, Optical testing, Spatial frequencies, Crystal optics, Optical transfer functions

Read Abstract +

Proceedings Article | 13 July 2004 Paper

Simulated retinal images of Landolt rings in human eyes including asymmetric aberrations on the point spread function analysis system

Masahiro Shibutani, Katsuhiko Kobayashi, Gaku Takeuchi, Yumi Kubotera, Kazuhiko Ohnuma, Kazuno Negishi, Kenji Ohno, Tohru Noda

Proceedings Volume 5314, (2004) https://doi.org/10.1117/12.527931

KEYWORDS: Point spread functions, Modulation transfer functions, Phase transfer function, Eye, Image segmentation, Optical transfer functions, Ophthalmology, Light sources, Charge-coupled devices, Retina

Read Abstract +

SPIE Journal Paper | 1 January 2004 Open Access

Calculation of ocular single-pass modulation transfer function and retinal image simulation from measurements of the polarized double-pass ocular point spread function

Katsuhiko Kobayashi, Masahiro Shibutani, Gaku Takeuchi, Kazuhiko Ohnuma, Yoichi Miyake, Kazuno Negishi, Kenji Ohno, Tohru Noda

JBO, Vol. 9, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1627777

KEYWORDS: Modulation transfer functions, Point spread functions, Retina, Eye, CCD cameras, Light sources, Interferometry, Prisms, Visualization, Fourier transforms

DOWNLOAD PAPER

Proceedings Article | 14 July 2003 Paper

Measurement of the single-pass modulation transfer function and simulation of the retinal image of the human eye with a newly developed point spread function analysis system

Katsuhiko Kobayashi, Masahiro Shibutani, Gaku Takeuchi, Kazuhiko Ohonuma, Yoichi Miyake, Kazuno Negishi, Kenji Ohno, Tohru Noda

Proceedings Volume 4951, (2003) https://doi.org/10.1117/12.477950

KEYWORDS: Modulation transfer functions, Point spread functions, Visualization, Eye, Remote sensing, Lithium, Holmium, Photovoltaics, Convolution, Infrared imaging

Read Abstract +

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years