Title:
OPTICAL APPARATUS USING DOUBLE-GROOVE DIFFRACTION GRATING
Document Type and Number:
Japanese Patent JP2012042955
Kind Code:
A
Abstract:
To provide an optical apparatus using a double-groove diffraction grating controlling light such as laser from a coherent light source, coupling, dispersing, reflecting and delaying it in cooperation with a light transmissive substrate.
This optical apparatus employs a double-groove diffraction grating having periodic sets of TiO2 elements 14 and 16 on one or more surfaces 12 of an SiO2 substrate 10. First order components of incident polarized light 18 coupled into the substrate are reflected so as to propagate through the substrate to terminus points where they either change direction for further propagation or exit the substrate.
Inventors:
IIZUKA HIDEO
ENGATA NADER
ENGATA NADER
Application Number:
JP2011176307A
Publication Date:
March 01, 2012
Filing Date:
August 11, 2011
Export Citation:
Assignee:
TOYOTA ENG & MFG NORTH AMERICA
UNIV PENNSYLVANIA
UNIV PENNSYLVANIA
International Classes:
G02B5/18; G02B27/01; G02B6/34
Domestic Patent References:
| JP2008083539A | 2008-04-10 | |||
| JP2009186794A | 2009-08-20 | |||
| JPH10268066A | 1998-10-09 | |||
| JPH08507879A | 1996-08-20 | |||
| JPH05250751A | 1993-09-28 | |||
| JP2010512544A | 2010-04-22 | |||
| JP2005524096A | 2005-08-11 |
Foreign References:
| EP1562186A1 | 2005-08-10 | |||
| WO2008148927A1 | 2008-12-11 |
Other References:
JUHA PIETARINEN,TUOMAS VALLIUS: "Double groove broadband gratings", OPTICS EXPRESS, vol. 16, no. 18, JPN7014002306, 1 September 2008 (2008-09-01), US, pages 13824 - 13829, ISSN: 0002865252
PASI LAAKKONEN等: "High Efficiency Diffractive Incouplers for Light Guide", PROC. OF SPIE, vol. 6896, JPN7014002307, 2008, US, pages 68960 - 1, ISSN: 0002865253
JYRKI SAARINEN等: "Asymmetric beam deflection by doubly grooved binaly gratings", APPLIED OPTICS, vol. 33, no. 14, JPN7014002308, 1995, US, pages 2401 - 2405, XP008112077, ISSN: 0002865254, DOI: 10.1364/AO.34.002401
PASI LAAKKONEN等: "High Efficiency Diffractive Incouplers for Light Guide", PROC. OF SPIE, vol. 6896, JPN7014002307, 2008, US, pages 68960 - 1, ISSN: 0002865253
JYRKI SAARINEN等: "Asymmetric beam deflection by doubly grooved binaly gratings", APPLIED OPTICS, vol. 33, no. 14, JPN7014002308, 1995, US, pages 2401 - 2405, XP008112077, ISSN: 0002865254, DOI: 10.1364/AO.34.002401
Attorney, Agent or Firm:
Atsushi Aoki
Tetsuro Shimada
Shinji Mitsuhashi
Koichi Ito
Kentaro Ito
Tatsuki Sone
Tetsuro Shimada
Shinji Mitsuhashi
Koichi Ito
Kentaro Ito
Tatsuki Sone