JPS5238943A - Multi-focus lens - Google Patents

Multi-focus lens

Info

Publication number
JPS5238943A
JPS5238943A JP11520775A JP11520775A JPS5238943A JP S5238943 A JPS5238943 A JP S5238943A JP 11520775 A JP11520775 A JP 11520775A JP 11520775 A JP11520775 A JP 11520775A JP S5238943 A JPS5238943 A JP S5238943A
Authority
JP
Japan
Prior art keywords
focus lens
lens
nonspherical
plane
sharp image
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
JP11520775A
Other languages
Japanese (ja)
Inventor
Masaru Egawa
Tadaharu Tomita
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 JP11520775A priority Critical patent/JPS5238943A/en
Publication of JPS5238943A publication Critical patent/JPS5238943A/en
Pending legal-status Critical Current

Links

Landscapes

  • Eyeglasses (AREA)

Abstract

PURPOSE: To provide a nonspherical plane to a smaller lens of a multi-focus lens so as to form a sharp image.
COPYRIGHT: (C)1977,JPO&Japio
JP11520775A 1975-09-23 1975-09-23 Multi-focus lens Pending JPS5238943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11520775A JPS5238943A (en) 1975-09-23 1975-09-23 Multi-focus lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11520775A JPS5238943A (en) 1975-09-23 1975-09-23 Multi-focus lens

Publications (1)

Publication Number Publication Date
JPS5238943A true JPS5238943A (en) 1977-03-25

Family

ID=14657001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11520775A Pending JPS5238943A (en) 1975-09-23 1975-09-23 Multi-focus lens

Country Status (1)

Country Link
JP (1) JPS5238943A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045998U (en) * 1983-09-07 1985-04-01 昭和アルミニウム株式会社 liquefied gas evaporator
US5390500A (en) * 1992-12-29 1995-02-21 Praxair Technology, Inc. Cryogenic fluid vaporizer system and process
JPH0882775A (en) * 1994-09-09 1996-03-26 Micro Eng Kk Bifocal spectacle lens for far and near sight and its production

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045998U (en) * 1983-09-07 1985-04-01 昭和アルミニウム株式会社 liquefied gas evaporator
US5390500A (en) * 1992-12-29 1995-02-21 Praxair Technology, Inc. Cryogenic fluid vaporizer system and process
JPH0882775A (en) * 1994-09-09 1996-03-26 Micro Eng Kk Bifocal spectacle lens for far and near sight and its production

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