DIFFRACTIVE OPTICAL MEMBER AND VIRTUAL IMAGE DISPLAY DEVICE

Title:

DIFFRACTIVE OPTICAL MEMBER AND VIRTUAL IMAGE DISPLAY DEVICE

Document Type and Number:

Japanese Patent JP2022056571

Kind Code:

A

Abstract:

To provide a diffractive optical member capable of preventing or inhibiting the generated stress from affecting diffraction in a hologram element.SOLUTION: A diffractive optical member includes: a hologram element 310; substrates 321, 322 supporting the hologram element 310; dielectric films 331, 332 provided between the hologram element 310 and the substrates 321, 322; a buffer layer BL formed around the hologram element 310 and relaxing stress applied from the outside of the hologram element 310 to the hologram element 310; and an adhesive layer 340 adhering the buffer layer BL and the dielectric films 331, 332.SELECTED DRAWING: Figure 3

Inventors:

FUJII EIICHI
SAITO JUN

Application Number:

JP2020164392A

Publication Date:

April 11, 2022

Filing Date:

September 30, 2020

Export Citation:

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Assignee:

SEIKO EPSON CORP

International Classes:

G02B5/32; G02B1/14; G02B1/18; G02B5/18; G02B27/02; G03H1/22

Attorney, Agent or Firm:

Haruhito Oishi
Fukuda Mitsuhiro
Kei Yamakawa

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