DIFFRACTIVE OPTICAL MEMBER AND VIRTUAL IMAGE DISPLAY DEVICE

Title:

DIFFRACTIVE OPTICAL MEMBER AND VIRTUAL IMAGE DISPLAY DEVICE

Document Type and Number:

Japanese Patent JP2022055470

Kind Code:

A

Abstract:

To provide a diffractive optical member and a virtual image display device capable of suppressing deterioration of a hologram element due to moisture.SOLUTION: A diffractive optical member of the present invention includes: a first substrate having moisture permeability; a first dielectric film provided on one surface of the first substrate; a hologram element provided on the first dielectric film; a second substrate provided opposite to the hologram element; and an adhesive member for bonding the first substrate and the second substrate.SELECTED DRAWING: Figure 5

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Inventors:

TACHIKI HIROYUKI

Application Number:

JP2020162916A

Publication Date:

April 08, 2022

Filing Date:

September 29, 2020

Export Citation:

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Assignee:

SEIKO EPSON CORP

International Classes:

G02B5/18; G02B5/32; G02B27/02; G03H1/02; H04N5/64

Attorney, Agent or Firm:

Yasushi Matsunuma
Kazunori Onami
Hiroyuki Matsumoto
Akio Sato

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