Title:
OPTICAL SHEET MANUFACTURING METHOD AND OPTICAL SHEET MANUFACTURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/190052
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing an optical sheet manufacturing method and manufacturing apparatus, whereby cutting out of an optical sheet having a concentric circular pattern from an optical sheet parent material in which the optical sheet is formed can be performed simply, with high precision, and at low cost. The aforementioned problem is solved by detecting the center of the concentric circular pattern of the optical sheet and determining the cut-out position of the optical sheet in the optical sheet parent material in accordance with the center detection result.
Inventors:
NAKAYAMA TAKEHIKO (JP)
Application Number:
PCT/JP2023/011561
Publication Date:
October 05, 2023
Filing Date:
March 23, 2023
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
G02B3/00; B26D5/32; B26F1/00; B26F1/40; B26F1/44; G02B3/08; G02B3/12; G02B3/14
Foreign References:
| JP2006179122A | 2006-07-06 | |||
| JPS63229624A | 1988-09-26 | |||
| US20190210388A1 | 2019-07-11 | |||
| CN101315470A | 2008-12-03 | |||
| JPH01192019A | 1989-08-02 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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