TRANSMISSIVE DIFFRACTION GRATING AND DETECTING DEVICE

Japanese Patent JP2013007830

A

To provide a transmissive diffractive grating having no deviation in a polarization azimuth of incident light and, even when polarization dependency of a diffractive layer is high, providing high diffraction efficiency, and to provide a detecting device using the same.

A transmissive diffraction grating 10 includes: a polarization conversion layer 20; a first diffractive layer 30 disposed on one surface side of the polarization conversion layer; and a second diffractive layer 40 disposed on the other surface side of the polarization conversion layer. Both the first diffractive layer 30 and the second diffractive layer 40 include refractive index modulation structures 32 and 42 arranged at a period P in a first direction, and diffraction efficiency for a TE polarized light component is higher than diffraction efficiency for a TM polarized light component.

JP6175898	The manufacturing method of diffractive optics and diffractive optics, and electronic equipment
JP2009269222	DECORATIVE PANEL
JP4495722	How to create a microstructure

AMAKO ATSUSHI

JP2011139527A

January 10, 2013

June 23, 2011

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SEIKO EPSON CORP

G02B5/18; G01J3/18; G01J3/44; G02B5/30

JP2004170853A	2004-06-17
JP2009204953A	2009-09-10
JP2002022963A	2002-01-23
JP2008216424A	2008-09-18
JP2008197664A	2008-08-28
JP2007206225A	2007-08-16
JPH04257801A	1992-09-14
JP2004145255A	2004-05-20
JPH0989775A	1997-04-04

US6583873B1

2003-06-24

Inoue Ichi
Takekoshi Noboru
Yasushi Kuroda

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