JPS6440926A - Low-aberration spectacle lens - Google Patents

Low-aberration spectacle lens

Info

Publication number
JPS6440926A
JPS6440926A JP19635587A JP19635587A JPS6440926A JP S6440926 A JPS6440926 A JP S6440926A JP 19635587 A JP19635587 A JP 19635587A JP 19635587 A JP19635587 A JP 19635587A JP S6440926 A JPS6440926 A JP S6440926A
Authority
JP
Japan
Prior art keywords
aspherical surface
spectacle lens
aberration
low
astigmatism
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
JP19635587A
Other languages
Japanese (ja)
Inventor
Minoru Sekine
Tsuneo Wakabayashi
Shoji Shima
Minekichi Yokote
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.)
AGC Inc
Original Assignee
Asahi Glass 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 Asahi Glass Co Ltd filed Critical Asahi Glass Co Ltd
Priority to JP19635587A priority Critical patent/JPS6440926A/en
Publication of JPS6440926A publication Critical patent/JPS6440926A/en
Pending legal-status Critical Current

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  • Lenses (AREA)

Abstract

PURPOSE:To reduce the astigmatism of a single-focus spectacle lens with a positive diopter by forming a specific aspherical surface as at least one surface of the lens. CONSTITUTION:The single-focus spectacle lens with the positive diopter has the aspherical surface whose entire surface shape is is expressed by an equation I as at least its one surface. In the inequality I, (x) is the length of the perpendicular to a plane contacting the aspherical surface peak from one point on the aspherical surface at a distance (h) from the optical axis, (h) the distance from the optical axis, S the curvature of a spherical surface inscribed with the peak of the aspherical surface, (k) and A, B, C,... are the constants of the aspherical surface, (k) an ellipse constant, and A, B, C,... are the coefficients of terms proportional to the values of (k) raised to 4th, 6th, and 8th power.... Consequently, the astigmatism is reduced.
JP19635587A 1987-08-07 1987-08-07 Low-aberration spectacle lens Pending JPS6440926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19635587A JPS6440926A (en) 1987-08-07 1987-08-07 Low-aberration spectacle lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19635587A JPS6440926A (en) 1987-08-07 1987-08-07 Low-aberration spectacle lens

Publications (1)

Publication Number Publication Date
JPS6440926A true JPS6440926A (en) 1989-02-13

Family

ID=16356460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19635587A Pending JPS6440926A (en) 1987-08-07 1987-08-07 Low-aberration spectacle lens

Country Status (1)

Country Link
JP (1) JPS6440926A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217225A (en) * 1990-12-18 1992-08-07 Ishida Koki Seisakusho:Kk Near/intermediate distance region no-distortion farsighted lens
WO1993007525A1 (en) * 1991-10-09 1993-04-15 Seiko Epson Corporation Lens for glasses
JPH05127129A (en) * 1991-11-06 1993-05-25 Micro Eng Kk Spectacle lens for astigmatism made of glass
WO1997026578A1 (en) * 1996-01-16 1997-07-24 Hoya Corporation Aspherical eyeglass lens
US6637880B1 (en) 1999-02-12 2003-10-28 Hoya Corporation Spectacle lens and manufacturing method therefor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136644A (en) * 1976-05-11 1977-11-15 Seiko Epson Corp Lens for spectacles
JPS56149013A (en) * 1980-04-22 1981-11-18 Seiko Epson Corp Plastic lens for spectacles
JPS5824112A (en) * 1981-07-08 1983-02-14 オプテイツシエ・ウエルケ・ゲ−・ロ−デンストツク Glasses lens with large positive refraction value

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136644A (en) * 1976-05-11 1977-11-15 Seiko Epson Corp Lens for spectacles
JPS56149013A (en) * 1980-04-22 1981-11-18 Seiko Epson Corp Plastic lens for spectacles
JPS5824112A (en) * 1981-07-08 1983-02-14 オプテイツシエ・ウエルケ・ゲ−・ロ−デンストツク Glasses lens with large positive refraction value

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04217225A (en) * 1990-12-18 1992-08-07 Ishida Koki Seisakusho:Kk Near/intermediate distance region no-distortion farsighted lens
WO1993007525A1 (en) * 1991-10-09 1993-04-15 Seiko Epson Corporation Lens for glasses
JPH05127129A (en) * 1991-11-06 1993-05-25 Micro Eng Kk Spectacle lens for astigmatism made of glass
WO1997026578A1 (en) * 1996-01-16 1997-07-24 Hoya Corporation Aspherical eyeglass lens
US5825454A (en) * 1996-01-16 1998-10-20 Hoya Corporation Aspherical spectacle lens
AU723346B2 (en) * 1996-01-16 2000-08-24 Hoya Corporation Aspherical spectacle lens
CN1301423C (en) * 1996-01-16 2007-02-21 Hoya株式会社 Aspherical eyeglass lens
US6637880B1 (en) 1999-02-12 2003-10-28 Hoya Corporation Spectacle lens and manufacturing method therefor
US6871955B2 (en) 1999-02-12 2005-03-29 Hoya Corporation Spectacle lens and manufacturing method therefor

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