Title:
OPTICAL ELEMENT AND MANUFACTURING METHOD THEREOF
Document Type and Number:
Japanese Patent JP2019124710
Kind Code:
A
Abstract:
To provide an optical element that has excellent image quality and has durability capable of maintaining a high diffraction efficiency for a long term even under a high humidity condition.SOLUTION: In an optical element, at least one of a pair of bonding surfaces of two adjacent transparent optical members has a curved surface, a layer including a volume hologram recording layer including a photopolymer is disposed in at least a partial region of the bonding surface having the curved surface among the pair of bonding surfaces, and a radiation curable adhesive layer is provided to cover the entire bonding surface having the curved surface. The volume hologram recording layer includes polyurethane.SELECTED DRAWING: Figure 3
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Inventors:
ONAKA KENICHI
TAMURA KISHIOMI
HIRAOKA SABURO
TAMURA KISHIOMI
HIRAOKA SABURO
Application Number:
JP2016096421A
Publication Date:
July 25, 2019
Filing Date:
May 12, 2016
Export Citation:
Assignee:
KONICA MINOLTA INC
International Classes:
G02B5/32; G03H1/02; H04N5/64
Attorney, Agent or Firm:
Hatta International Patent Corporation