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Featured researches published by Tatsuo Ito.


Applied Optics | 1998

High-efficiency diffractive micromachined chopper for infrared wavelength and its application to a pyroelectric infrared sensor

Michihito Ueda; Teruhiro Shiono; Tatsuo Ito; Kazuo Yokoyama

We have developed a diffractive micromachined chopper (DMC) for an IR wavelength of ~10 mum. This device operates mechanically by movable reflection grating beams. It modulates the diffraction efficiency by controlling the displacement of grating beams by an electrostatic force. For a CO(2) laser beam, a high modulation efficiency of 84% with an -0.8-dB small insertion loss was obtained by detecting 0th-order diffracted light. A novel pyroelectric IR microsensor with a DMC and a diffractive multilevel Si microlens was proposed and it demonstrated the detection of human existence.


Archive | 1997

Diffractive optical modulator and method for producing the same, infrared sensor including such a diffractive optical modulator and method for producing the same, and display device including such a diffractive optical modulator

Teruhiro Shiono; Michihito Ueda; Tatsuo Ito; Kazuo Yokoyama; Shinichi Mizuguchi


Archive | 1995

Diffractive optical modulator and method for producing the same

Teruhiro Shiono; Michihito Ueda; Tatsuo Ito; Kazuo Yokoyama; Shinichi Mizuguchi


Archive | 1996

OUTGOING EFFICIENCY CONTROL DEVICE, PROJECTION TYPE DISPLAY APPARATUS

Tatsuo Ito; Teruhiro Shiono; Michihito Ueda; Kazuo Yokoyama


Archive | 1996

Output efficiency control device, projection-type display apparatus, infrared sensor, and non-contact thermometer

Teruhiro Shiono; Michihito Ueda; Tatsuo Ito; Kazuo Yokoyama


Archive | 2004

Information recording medium and its manufacturing method,recording/preproducing method, and optical information recording/reproducing device

Teruhiro Shiono; Hiroaki Yamamoto; Seiji Nishino; Tatsuo Ito


Archive | 1992

Ferroelectric cold cathode

Tatsuo Ito; Masanori Okuyama; 達男 伊藤; 雅則 奥山


Archive | 2001

Laser drive device, optical head, and optical information processor

Tatsuo Ito; Shinichi Kadowaki; Tomotada Kamei; Hiroaki Yamamoto; Yoshiaki Komma


Archive | 2004

Optical head device and optical information reproducing device

Tatsuo Ito; Teruhiro Shiono; Seiji Nishino; Hiroaki Yamamoto


Archive | 1993

Circular arc illumination apparatus

Tatsuo Ito; Toshiyuki Watanabe; Masaki Suzuki

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