Title:
REFLECTION TYPE DIFFRACTION GRATING
Document Type and Number:
Japanese Patent JP2015219446
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a reflection type diffraction grating representing high diffraction efficiency over a wide wavelength range.SOLUTION: The lattice plane of a reflection type diffraction grating 30 includes a first reflection region 1 composed of a first substance and a second reflection region 2 composed of a second substance. Since a first reflection region and a second reflection region are included in the radiation regions 3 of incident light, diffraction light becomes mixed light of reflected light by each of the first reflection region and the second reflection region, and the first reflection region 1 and the second reflection region 2 complement each other regarding reflectance. As a result, the reflection type diffraction grating 30 can represent high diffraction efficiency over a wide wavelength range.
Inventors:
KURAMOTO SATOSHI
Application Number:
JP2014104282A
Publication Date:
December 07, 2015
Filing Date:
May 20, 2014
Export Citation:
Assignee:
SHIMADZU CORP
International Classes:
G02B5/18
Attorney, Agent or Firm:
Kyoto International Patent Office