JPS5220045A - Lens - Google Patents

Lens

Info

Publication number
JPS5220045A
JPS5220045A JP9649575A JP9649575A JPS5220045A JP S5220045 A JPS5220045 A JP S5220045A JP 9649575 A JP9649575 A JP 9649575A JP 9649575 A JP9649575 A JP 9649575A JP S5220045 A JPS5220045 A JP S5220045A
Authority
JP
Japan
Prior art keywords
lens
boundary portion
refracing
geare
chamfering
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
JP9649575A
Other languages
Japanese (ja)
Inventor
Fumio Okuyama
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP9649575A priority Critical patent/JPS5220045A/en
Publication of JPS5220045A publication Critical patent/JPS5220045A/en
Pending legal-status Critical Current

Links

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  • Eyeglasses (AREA)

Abstract

PURPOSE: To eliminate the geare of a boundary portion between the central and peripheral portions on a single refracing surface of a lens, by chamfering said boundary portion.
COPYRIGHT: (C)1977,JPO&Japio
JP9649575A 1975-08-08 1975-08-08 Lens Pending JPS5220045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9649575A JPS5220045A (en) 1975-08-08 1975-08-08 Lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9649575A JPS5220045A (en) 1975-08-08 1975-08-08 Lens

Publications (1)

Publication Number Publication Date
JPS5220045A true JPS5220045A (en) 1977-02-15

Family

ID=14166658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9649575A Pending JPS5220045A (en) 1975-08-08 1975-08-08 Lens

Country Status (1)

Country Link
JP (1) JPS5220045A (en)

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