公开(公告)号：JPH11194309A

公开(公告)日：1999-07-21

申请号：JP29541798

申请日：1998-10-16

Applicant: ESSILOR INT

Inventor： BAUDARD THIERRY ,  AHSBAHS FRANCOISE ,  MIEGE CHRISTIAN

IPC: G02C7/06 ,  G02B3/10 ,  G02C7/02

Abstract: PROBLEM TO BE SOLVED: To provide a multifocus eye lens, which secures improved peripheral view while satisfactory center visibility is maintained and to which a wearing person in easily corresponds, by distributing an equal spherical value line and an equal cylinder value line. SOLUTION: The main length of a progression shows a position along a meridian 2 equivalent to the change of an average spherical value, which is actually equal to a magnification increase. A spherical value is substantially held constant at a far sight area above a point L. Then, the spherical value substantially is held constant in a nearsight area near a point P. Namely, the main length of the progression is shorter than 16 mm and the maximum value |dS/dθ|max of the coefficient of the sine function of the average spherical value in a circle whose diameter is 40 mm, which is center-adjusted with the geometric center of the lens, is smaller than 1/4 of the maximum value Pmer of the inclination of the average spherical value along the meridian 2. That is |dS/dθ|max /Pmer

公开(公告)号：DE69801629D1

公开(公告)日：2001-10-18

申请号：DE69801629

申请日：1998-10-13

Applicant: ESSILOR INT

Inventor： BAUDARD THIERRY ,  AHSBAHS FRANCOISE ,  MIEGE CHRISTIAN

IPC: G02C7/06 ,  G02B3/10 ,  G02C7/02

公开(公告)号：DE69801629T2

公开(公告)日：2002-06-27

申请号：DE69801629

申请日：1998-10-13

Applicant: ESSILOR INT

Inventor： BAUDARD THIERRY ,  AHSBAHS FRANCOISE ,  MIEGE CHRISTIAN

IPC: G02C7/06 ,  G02B3/10 ,  G02C7/02

公开(公告)号：ES2165134T3

公开(公告)日：2002-03-01

申请号：ES98402531

申请日：1998-10-13

Applicant: ESSILOR INT

Inventor： BAUDARD THIERRY ,  AHSBAHS FRANCOISE ,  MIEGE CHRISTIAN

IPC: G02C7/06 ,  G02B3/10 ,  G02C7/02