JPS6234783Y2 - - Google Patents

Info

Publication number
JPS6234783Y2
JPS6234783Y2 JP1978156945U JP15694578U JPS6234783Y2 JP S6234783 Y2 JPS6234783 Y2 JP S6234783Y2 JP 1978156945 U JP1978156945 U JP 1978156945U JP 15694578 U JP15694578 U JP 15694578U JP S6234783 Y2 JPS6234783 Y2 JP S6234783Y2
Authority
JP
Japan
Prior art keywords
diffraction grating
original
printed matter
pitch
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
JP1978156945U
Other languages
English (en)
Japanese (ja)
Other versions
JPS5573378U (en]
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 filed Critical
Priority to JP1978156945U priority Critical patent/JPS6234783Y2/ja
Publication of JPS5573378U publication Critical patent/JPS5573378U/ja
Application granted granted Critical
Publication of JPS6234783Y2 publication Critical patent/JPS6234783Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
JP1978156945U 1978-11-15 1978-11-15 Expired JPS6234783Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1978156945U JPS6234783Y2 (en]) 1978-11-15 1978-11-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1978156945U JPS6234783Y2 (en]) 1978-11-15 1978-11-15

Publications (2)

Publication Number Publication Date
JPS5573378U JPS5573378U (en]) 1980-05-20
JPS6234783Y2 true JPS6234783Y2 (en]) 1987-09-04

Family

ID=29147396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1978156945U Expired JPS6234783Y2 (en]) 1978-11-15 1978-11-15

Country Status (1)

Country Link
JP (1) JPS6234783Y2 (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002372610A (ja) * 2001-06-13 2002-12-26 Dainippon Printing Co Ltd 真正性確認が可能な回折格子、およびそれが設けられた記録媒体

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647275A (en) * 1970-09-09 1972-03-07 Optronics International Identification system using reference beam coded holograms
JPS49130241A (en]) * 1973-04-13 1974-12-13
JPS5620002B2 (en]) * 1973-07-03 1981-05-11
DE2546007B2 (de) * 1975-10-14 1977-12-29 Siemens AG, 1000 Berlin und 8000 München Faelschungssichere ausweiskarte und verfahren zu ihrer herstellung

Also Published As

Publication number Publication date
JPS5573378U (en]) 1980-05-20

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