Title:
GLASS MOLDING DIE FOR OPTICAL ELEMENT MOLDING AND METHOD FOR PRODUCING THE SAME, AND METHOD FOR PRODUCING OPTICAL ELEMENT
Document Type and Number:
Japanese Patent JP2022107530
Kind Code:
A
Abstract:
To provide a glass molding die that can reduce variations in shapes of optical elements when producing the optical elements by press molding.SOLUTION: A glass molding die for optical element molding has a Newton variation A590°C of 0.00 or more and 1.50 or less before and after annealing at 590°C.SELECTED DRAWING: None
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Inventors:
KURASAWA HIROMI
SATO KOICHI
SHIRAISHI KOICHIRO
SATO KOICHI
SHIRAISHI KOICHIRO
Application Number:
JP2022001430A
Publication Date:
July 21, 2022
Filing Date:
January 07, 2022
Export Citation:
Assignee:
HOYA CORP
International Classes:
C03B11/00; C03B25/02; C03C3/085; C03C3/087; C03C3/095; G02B1/00
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes
Previous Patent: JPWO2022107529
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