公开(公告)号：JP2000127015A

公开(公告)日：2000-05-09

申请号：JP30100199

申请日：1999-10-22

Applicant: ESSILOR INT

Inventor： SILLON CHRISTOPHE

IPC: B24B9/14 ,  B24B47/22 ,  G02C13/00

Abstract: PROBLEM TO BE SOLVED: To prevent deformations while calibrating a polishing machine for a spectacle lens, in particular a grooving wheel. SOLUTION: This method includes a swinging arm mounted so as to swing on a frame; a lens retaining shaft rotatable around an axis parallel to a swinging axis of the swinging arm and mountable with a calibration tool 25; and a tool retaining shaft rotatably mounted on a frame keeping a certain distance from the swinging axis of the swinging arm mountable with a machining tool 14'. The swinging arm mounted with the calibration template 25 includes an approaching phase moving toward the tool retaining shaft mounted with the machining tool 14'. Immediately after the contact between the calibration template 25 and the machining tool 14' is detected, the approaching phase is suspended.

公开(公告)号：JPH11242193A

公开(公告)日：1999-09-07

申请号：JP35735098

申请日：1998-12-16

Applicant: ESSILOR INT

Inventor： BAUDE DOMINIQUE ,  CHATEAU NICOLAS

IPC: A61F2/16 ,  G02C7/04 ,  G02C7/06

Abstract: PROBLEM TO BE SOLVED: To provide a progressive multi-focal ophthalmologic lens where the relation between progression of the spherical aberration of eyeballs due to aging and a refraction abnormality is taken into consideration. SOLUTION: In this multi-focal ophthalmologic lens 11, the visual profile (unit: diopter) of the lens as a function of height (k) (unit: mm) on an axis A of the lens and the addition (Add) corresponding to the degree of presbyopia of a user is defined by P(h)=f(PVL, Add, h) +C(Add, PVL)h2 +B(Add,PVL) where PVL, (f), C(Add, PVL), and B(Add, PVL) are the vision (unit: diopter) required for far sight, a function of evolution between near vision and far vision, a spherical aberration correction coefficient determined by the addition and the far vision, and a vision correction coefficient determined by the spherical aberration coefficient. respectively.

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：JPH11194307A

公开(公告)日：1999-07-21

申请号：JP29538298

申请日：1998-10-16

Applicant: ESSILOR INT

Inventor： LE SAUX GILLES ,  PEDRONO CLAUDE ,  ROSSIER CLAIRE

IPC: G02C7/06 ,  G02C7/02

Abstract: PROBLEM TO BE SOLVED: To assure wearing person's good visual comfortableness, a high near sight region and a wide visual field in the near sight region, intermediate sight region and far sight region. SOLUTION: This lens is the multifocal ocular lens including the far sight region VL, the near sight region VP and the intermediate sight region VI and has the wide visual field in the near sight region VP, the intermediate sight region VI and the far sight region VL. Although the distance between the mounting center on the lens and the point at which a magnification increment is higher by 85% than the magnification increment at a far sight control point is shorter than 16 mm, a progression is gentle and simultaneously the max. cylinder value on the inner side of a radius 20 mm aligned to the geometrical center of the lens is maintained at a low value.

公开(公告)号：JPH10113853A

公开(公告)日：1998-05-06

申请号：JP19238397

申请日：1997-07-17

Applicant: ESSILOR INT

Inventor： CLARA PHILIPPE ,  DABOUDET PASCAL ,  HADDADI AHMED

IPC: G01B11/24 ,  B24B9/14 ,  G02C13/00

Abstract: PROBLEM TO BE SOLVED: To provide a method to effectively read out the cross section of the groove edge of the edge section of a spectacle frame and a pointer to carry out this method. SOLUTION: In the method to read out the cross section of the groove edge 10 of the edge section 11 of a spectacle frame at least at one point above the edge section 11, with the position of a movable pointer 12 left capable of being defined using a specified coordinate system RT, the movable pointer 12 is moved following the groove edge 10. At least two different points on at least one side face 13 or 13' out of the side faces 13 and 13' of the groove edge 10 are visually confirmed in order to obtain the coordinate value of these points. The cross section of the groove edge 10 thus read out is used for trimming the lens to be secured in this groove edge 10.

公开(公告)号：JPH0925321A

公开(公告)日：1997-01-28

申请号：JP13467996

申请日：1996-05-29

Applicant: ESSILOR INT

Inventor： PEIKI JIYAN

IPC: G02C7/02 ,  C07C69/54 ,  C07C327/40 ,  C08F2/48 ,  C08F20/26 ,  C08F20/38 ,  C08F220/30 ,  C08F220/38 ,  C08F228/02 ,  C08F283/00 ,  C08F290/00 ,  C08F290/06 ,  G02B1/04

公开(公告)号：JPH08318458A

公开(公告)日：1996-12-03

申请号：JP12975496

申请日：1996-05-24

Applicant: ESSILOR INT

Inventor： ROORAN GIYUIRERUMAN

IPC: B24B9/14 ,  B24B47/22

Abstract: PROBLEM TO BE SOLVED: To provide a calibration template periodically repeatable particularly in the case of changing or truing a grinding wheel by forming the calibration template in disk shape with its circular contour forming two localized angular points circumscribed by a common circumference and having a relative angular offset. SOLUTION: A calibration template 20 designed to be fitted to a grinding machine to be calibrated instead of an ophthalmic lens is in the general form of a disk. The contour 22 of the calibration template 20 is circular at least part of its perimeter but forms two localized angular points 23 circumscribed by a common circumference C and having a relative angular offset, and at least two separate parts 24', 24" of a circular part 22A of the contour 22 form bevels 25', 25" respectively with edge parts cut off by a cylindrical plane. The bevels 25', 25" to be formed at the edge part of the ophthalmic lens can therefore be accurately positioned on the edge part.

公开(公告)号：JPH07190885A

公开(公告)日：1995-07-28

申请号：JP22043894

申请日：1994-09-14

Applicant: ESSILOR INT

Inventor： RUSO JIRU ,  BERUTORAN PATORITSUKU ,  RITSUPAN GUZABIE ,  RAFUE KURISUTOFU

IPC: G01B11/24 ,  G01B11/255 ,  G01M11/00 ,  G01M11/02

Abstract: PURPOSE: To absolutely measure the geometric or optical structure of an optical element with high accuracy, without any need of known knowledge by irradiating the optical element with incident light having a known wave front, and receiving the reflected light or transmitted light thereof with a plane having a map assigned regarding the wave front slope of the light. CONSTITUTION: When the shape, position and refraction factor of the surface 5 of a progressive lens 4 is known, for example, the characteristic value of the surface 6 (polished surface) of the lens 4 is measured as an absolute value. In this case, a light source means 1 irradiates light having a known wave front shape to the lens 4, and light transmitted through the lens 4 is received with a measurement means 2. A calculation means 3 is connected to the measurement means 2, and both thereof are combined, thereby quantifying a map for giving the surface shape of light incident on a measurement surface 6 as well as the wave front gradient of the light after transmission through the surface 6. Thereafter, the absolute characteristic value of the polished surface 6 is obtained from the slopes (wave front gradients).

公开(公告)号：JPH07164230A

公开(公告)日：1995-06-27

申请号：JP25260394

申请日：1994-10-19

Applicant: ESSILOR INT

Inventor： MITSUSHIERU NUUSHIE

IPC: B23C3/12 ,  B24B9/14

Abstract: PURPOSE: To apply a proper support load in all cases by providing an auxiliary spring for pressing a carriage toward a feeler between a chassis and the carriage in a trimming machine for trimming an eyeglass lens according to an eyeglass frame. CONSTITUTION: A trimming machine 11 comprises a cutting tool 12 such as grinding wheel rotated by a motor 13 provided on a chassis and a carriage 14 rotatable around an axial line A2 parallel to the rotating axial line Al of the cutting tool 12. It further comprises a support spindle 15 consisting of two half spindles 15', 15" for axially holding a lens 10 and a die plate 16, and the die plate 16 includes a feeler (vernier head) 17 supported by the chassis. The feeler 17 is movable to the chassis and provided with an auxiliary spring means 28 for pressing the carriage 14 toward the feeler 17 between the feeler 17 and the carriage 14, addition of a main spring means 15 acting between the carriage 14 and the chassis.

公开(公告)号：JPH07152004A

公开(公告)日：1995-06-16

申请号：JP21552794

申请日：1994-09-09

Applicant: ESSILOR INT

Inventor： ANDORE DANRUUPU

IPC: G02C1/04 ,  G02C5/02

Abstract: PURPOSE: To provide a frame for spectacles to which a filament is attached suitable for the frame for the spectacles provided with especially thin rigid parts (a bridge and a half rim). CONSTITUTION: Respective lenses are clamped between the relatively rigid half rim 12 and the filament 13. The half rim 12 is fixed to a tenon 17 and a cavity opened through an orifice 22 for forming a keyhole slot is formed at the tenon 17. The filament 13 is provided with a knot 19 held inside the cavity by the keyhole slot.