Company profile ouline


Establish Dec 10, 1974
Capital ¥10,000,000
Representative Yoshikazu Takeiri
Address [Headquarter, factory]Hiraide1749-3, Tatsuno-machi, Kamiina-gun Nagano 〒399-0422 Japan
TEL 0266-41-0885
FAX 0266-41-1985
Number of employees 20
  • 8 Multilayer film vacuum metallizers(BMC-900)
  • 2 Multilayer film vacuum metallizer(SID-1150D)
  • 5 Single layer film vacuum metallizers
  • 2 14 tank type automatic washing equipment
  • 3 Precision cross glass cutting automatic machines
  • 1 Spectro-photometer type U-4100
  • 1 Spectro-photometer type U-4000
  • 1 Spectro-photometer type U-3310
  • 2 Reflectometers(OLYMPUS)
  • 1 Small environmental test machine

【Headquarter, factory】

【Second plant】
OPT Development Center


1974 Dec Ryuto kouki., LTD. is established. Mainly with glass cutting and processing.
1980 Jun 6 manual single layer film deposition equipment are introduced.
1988 Mar We stepped forward in the field of the vacuum deposition.
1990 Jan Manual multilayer film evaporative apparatus(Poly cold) is introduced,began AR coating.
1991 Jul The headquarter was relocated to its present site with business expansion and new equipments.
1996 Aug As times changed, we upgraded from manual equipment to full-automatic evaporative apparatuses.
1999 Apr Establishment OPTICAL RYUTO., LTD. as a sales company, Ryuto kouki., LTD. became our manufacturing firm.
2000 Dec Began mass production of Film-setting by (IAD) Ion assist deposition.
2002 Sep Established second Ryuto kouki., LTD. factory as “OPUTO Development Center”
2004 Sep Established our internet homepage for our 30th business anniversary.
2009 Apr Consolidated Ryuto kouki.,LTD. and OPTICAL RYUTO.,LTD.
2014 Sep 40th anniversary.
2015 Oct Yoshikazu Takeiri was inaugurated as president.


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