CA1170035A - Optical mask - Google Patents

Optical mask

Info

Publication number
CA1170035A
CA1170035A CA000373647A CA373647A CA1170035A CA 1170035 A CA1170035 A CA 1170035A CA 000373647 A CA000373647 A CA 000373647A CA 373647 A CA373647 A CA 373647A CA 1170035 A CA1170035 A CA 1170035A
Authority
CA
Canada
Prior art keywords
mask
optical mask
picture screen
optical
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000373647A
Other languages
English (en)
French (fr)
Inventor
Hajime Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hajime Industries Ltd
Original Assignee
Hajime Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hajime Industries Ltd filed Critical Hajime Industries Ltd
Application granted granted Critical
Publication of CA1170035A publication Critical patent/CA1170035A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00Arrangements for displaying electric variables or waveforms
    • G01R13/20Cathode-ray oscilloscopes
    • G01R13/202Non-electric appliances, e.g. scales, masks

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
CA000373647A 1980-03-24 1981-03-23 Optical mask Expired CA1170035A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP38447/1980 1980-03-24
JP3844780U JPS56142372U (enExample) 1980-03-24 1980-03-24

Publications (1)

Publication Number Publication Date
CA1170035A true CA1170035A (en) 1984-07-03

Family

ID=12525537

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000373647A Expired CA1170035A (en) 1980-03-24 1981-03-23 Optical mask

Country Status (5)

Country Link
JP (1) JPS56142372U (enExample)
CA (1) CA1170035A (enExample)
DE (1) DE3111350A1 (enExample)
FR (1) FR2478819B1 (enExample)
GB (1) GB2072863B (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56133667A (en) * 1980-03-24 1981-10-19 Hajime Sangyo Kk Inspecting device
IT8323346V0 (it) * 1983-10-25 1983-10-25 Argondizzo Carlotta Festa Camp Supporto per tracciati o simili da applicare allo schermo del televisore per giochi o quiz.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484318A (en) * 1966-06-23 1969-12-16 Ibm Method of concurrently producing visible and magnetizable indicia
LU54931A1 (enExample) * 1967-11-21 1969-07-07
DE2209980A1 (de) * 1972-03-02 1973-09-06 Licentia Gmbh Vorrichtung zur messtechnischen bestimmung oder kontrolle der messdaten eines messobjektes

Also Published As

Publication number Publication date
GB2072863A (en) 1981-10-07
DE3111350A1 (de) 1982-03-25
FR2478819A1 (fr) 1981-09-25
GB2072863B (en) 1984-07-25
FR2478819B1 (fr) 1985-09-06
JPS56142372U (enExample) 1981-10-27

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Legal Events

Date Code Title Description
MKEX Expiry