BLAZED DIFFRACTION OPTICAL ELEMENT, AND METHOD FOR MANUFACTURING BLAZED DIFFRACTION OPTICAL ELEMENT

Title:

BLAZED DIFFRACTION OPTICAL ELEMENT, AND METHOD FOR MANUFACTURING BLAZED DIFFRACTION OPTICAL ELEMENT

Document Type and Number:

WIPO Patent Application WO/2022/004304

Kind Code:

A1

Abstract:

This blazed diffraction optical element comprises: a blazed diffraction grating pair which has a first blazed member and a second blazed member, and which functions as a diffraction grating due to the first blazed member and the second blazed member; and an intermediate layer positioned between the first blazed member and the second blazed member, wherein, when the refractive index of the first blazed member is defined as Na, the refractive index of the intermediate layer as N, and the refractive index of the second blazed member as Nb, a magnitude relationship of Na>N>Nb is established.

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Inventors:

NAKABAYASHI KOKI (JP)

Application Number:

PCT/JP2021/021755

Publication Date:

January 06, 2022

Filing Date:

June 08, 2021

Export Citation:

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Assignee:

FUJIFILM CORP (JP)

International Classes:

G02B5/18; A61F2/16; G02C7/06

Foreign References:

JP2011107586A	2011-06-02
JP2019534071A	2019-11-28
JP2019066756A	2019-04-25
JP2018189863A	2018-11-29
JP2009134223A	2009-06-18

Attorney, Agent or Firm:

TAIYO, NAKAJIMA & KATO (JP)

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