JPS52123639A - Spectacle lens - Google Patents

Spectacle lens

Info

Publication number
JPS52123639A
JPS52123639A JP3988376A JP3988376A JPS52123639A JP S52123639 A JPS52123639 A JP S52123639A JP 3988376 A JP3988376 A JP 3988376A JP 3988376 A JP3988376 A JP 3988376A JP S52123639 A JPS52123639 A JP S52123639A
Authority
JP
Japan
Prior art keywords
spectacle lens
lens
astigmation
curvature
distortion
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
JP3988376A
Other languages
Japanese (ja)
Inventor
Hiroichi Deguchi
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 JP3988376A priority Critical patent/JPS52123639A/en
Publication of JPS52123639A publication Critical patent/JPS52123639A/en
Pending legal-status Critical Current

Links

Landscapes

  • Eyeglasses (AREA)

Abstract

PURPOSE: To shallow lens depth and reduce astigmatism and distortion astigmation by increasing the radius of curvature of the spherical or toric surface used for the second surface of the spectacle lens and using a quadratic surface for the first surface.
COPYRIGHT: (C)1977,JPO&Japio
JP3988376A 1976-04-09 1976-04-09 Spectacle lens Pending JPS52123639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3988376A JPS52123639A (en) 1976-04-09 1976-04-09 Spectacle lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3988376A JPS52123639A (en) 1976-04-09 1976-04-09 Spectacle lens

Publications (1)

Publication Number Publication Date
JPS52123639A true JPS52123639A (en) 1977-10-18

Family

ID=12565365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3988376A Pending JPS52123639A (en) 1976-04-09 1976-04-09 Spectacle lens

Country Status (1)

Country Link
JP (1) JPS52123639A (en)

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