JPS52128151A - Method of making mold for fresnel lens - Google Patents

Method of making mold for fresnel lens

Info

Publication number
JPS52128151A
JPS52128151A JP4514176A JP4514176A JPS52128151A JP S52128151 A JPS52128151 A JP S52128151A JP 4514176 A JP4514176 A JP 4514176A JP 4514176 A JP4514176 A JP 4514176A JP S52128151 A JPS52128151 A JP S52128151A
Authority
JP
Japan
Prior art keywords
fresnel lens
making mold
mold
making
fresnel
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.)
Pending
Application number
JP4514176A
Other languages
English (en)
Inventor
Iwao Yamabe
Shigeo Takano
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.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co 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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP4514176A priority Critical patent/JPS52128151A/ja
Publication of JPS52128151A publication Critical patent/JPS52128151A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
JP4514176A 1976-04-20 1976-04-20 Method of making mold for fresnel lens Pending JPS52128151A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4514176A JPS52128151A (en) 1976-04-20 1976-04-20 Method of making mold for fresnel lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4514176A JPS52128151A (en) 1976-04-20 1976-04-20 Method of making mold for fresnel lens

Publications (1)

Publication Number Publication Date
JPS52128151A true JPS52128151A (en) 1977-10-27

Family

ID=12710991

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4514176A Pending JPS52128151A (en) 1976-04-20 1976-04-20 Method of making mold for fresnel lens

Country Status (1)

Country Link
JP (1) JPS52128151A (ja)

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