Title:
TRANSMISSIVE OPTICAL ELEMENT MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/006126
Kind Code:
A1
Abstract:
This transmissive optical element manufacturing method uses a thermoplastic resin film. The manufacturing method includes: a hot press step in which a thermoplastic resin film is hot-pressed in at least a pair of flat plate molds to obtain a hot-pressed film; a mold cooling step in which the pair of flat plate molds are cooled to no more than the glass transition temperature (Tgr) of the thermoplastic resin film to cool the heat-pressed film; and a mold releasing step in which, after the mold cooling step, the heat-pressed film is released from the pair of flat plate molds while a tensile force is applied to the heat-pressed film, to obtain a molded film that includes multiple transmissive optical elements.
Inventors:
ARAI KUNIHITO (JP)
SAWAGUCHI TAICHI (JP)
ITO TAKASHI (JP)
SAWAGUCHI TAICHI (JP)
ITO TAKASHI (JP)
Application Number:
PCT/JP2020/025726
Publication Date:
January 14, 2021
Filing Date:
June 30, 2020
Export Citation:
Assignee:
ZEON CORP (JP)
International Classes:
B29C43/34; B29C43/50; B29C43/58; G02B3/00; B29K101/12; B29L11/00
Domestic Patent References:
| WO2017126599A1 | 2017-07-27 |
Foreign References:
| JP2008105407A | 2008-05-08 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
Download PDF: