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Dive into the research topics where Nobuo Sakuma is active.

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Featured researches published by Nobuo Sakuma.


8th Intl Symp on Gas Flow and Chemical Lasers | 1992

Development of the toroidal surface measuring system

Hiroyuki Suhara; Nobuo Sakuma; Seizoh Suzuki; T. Ohsawa; Shin Tsuyuzaki; Satoru Toyooka

We have developed a toroidal surface measuring interferometer system. One of the key features of our interferometer system is its ability to measure a toroidal surface without a toroidal wave front and a toroidal reference surface. Our optical system consists of a Fizeau interferometer using a spherical wave front. A cross section figure of the test surface is obtained to analyze interference fringes like a striped bar by using the Fourier transform method. We can then connect each cross section over the entire surface figure by rotation of a rotary table. Results of examination show that the accuracy of our measuring system is better than (lambda) /20 P-V.


Archive | 1989

Optical scanning system

Seizo Suzuki; Nobuo Sakuma; Katsumi Yamaguchi; Osamu Endo


Archive | 2008

Projection optical system, magnification projection optical system, magnification projection apparatus, and image projection apparatus

Atsushi Takaura; Kazuhiro Fujita; Nobuo Sakuma


Archive | 1995

Edge emitting type light emitting diode array heads

Nobuo Sakuma; Seizo Suzuki; Hiromichi Atsuumi; Takeshi Ueda; Yasutaka Izumi


Archive | 1998

Virtual screen display device

Nobuo Sakuma; Makoto Obu; Akira Momose


Archive | 2004

Light emitting array with improved characteristics, optical writing unit, and image forming apparatus

Koji Masuda; Nobuo Sakuma; Masahiro Ito


Archive | 1993

Optical scanner having an image forming mirror and means for reducing scanning line pitch irregularities

Hiromichi Atsuumi; Nobuo Sakuma; Osamu Endou


Archive | 2008

Light scanning device

Hiromi Takada; Takami Suzuki; Toshio Shiina; Keiji Okamoto; Takeshi Komurasaki; Satoru Yoshioka; Nobuo Sakuma; Tadashi Matsuura


Archive | 1992

Image forming reflecting mirror for constant speed optical scan and optical scanner

Nobuo Sakuma; Hiromichi Atsuumi; Osamu Endou


Archive | 1986

Two-element fθ lens group capable of correcting leaning of deflecting plane

Nobuo Sakuma

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