公开(公告)号：JPH04264424A

公开(公告)日：1992-09-21

申请号：JP27975591

申请日：1991-10-25

Applicant: ESSILOR INT

Inventor： JIYAN RUI KARIU ,  KURISUCHIYAN JIYONKUURU ,  KUROODO BORIU ,  FUIRITSUPU KURARA ,  FURANSOWA BURIYUURU

IPC: G02C13/00 ,  B24B13/005

Abstract: PURPOSE: To provide a device for engaging holding parts with spectacle lenses, where the spectacle lenses are prevented from falling and being broken owing to the interference of an arm with the holding parts. CONSTITUTION: The device which is arranged in a plate so as to fix the holding parts to the spectacle lenses is provided with one arm 13 receiving the holding parts so as to be rotation possible and a carriage for permitting the arm 13 to rotate between a lifting load end position and lowering engagement end position. The carriage can straightly move between a drawing halt position and the advance end of a movement position. In a transmitting device which is operated between a driving device and one of the arm 13 or the carriage, the arm 13 is located at a drawing engagement position when the carriage is located at least at the position being adjacent to the advance end of the movement position. A restraining device is operated between the arm 13 and the carriage and permits the arm 13 to be restrained to the carriage at a lowering halt position in terms of a liberation.

公开(公告)号：JPH07266191A

公开(公告)日：1995-10-17

申请号：JP5388595

申请日：1995-03-14

Applicant: ESSILOR INT

Inventor： FUIRITSUPU KURARA

IPC: G02C13/00 ,  B23Q15/02 ,  B24B9/14 ,  G05B19/401 ,  G05B19/404 ,  G05B19/42

Abstract: PURPOSE: To simplify the determination of reproduction error by taking the reading by a contour follower device from a template of a known shape, taking the reading by the contour follower device using a machined part, and calculating the reproduction error on the basis of these readings. CONSTITUTION: A first reading is taken by a contour follower device from a template of known shape. Then a part is machined by a trimming machine on the basis of this first reading. A second reading is taken by the contour follower device using this machined part. The reproduction error is deduced from the two readings by calculation. On this occasion, the reading is taken to various expected finishing works, that is, to the finishing for forming the chamfer or forming a groove, or the finishing limited for polishing an edge of a spectacle lens.

公开(公告)号：JPH03135396A

公开(公告)日：1991-06-10

申请号：JP26030790

申请日：1990-09-28

Applicant: ESSILOR INT

Inventor： FUIRITSUPU KURARA

IPC: G02C13/00 ,  B24B9/14 ,  B24B13/005 ,  G05D3/12 ,  H02P23/00

Abstract: PURPOSE: To drive an electric motor with a simple method by controlling a circuit for controlling the supply of power to the electric motor with a sensor that responds to the phase difference between the current of the stator coil winding of the electric motor and the voltage between coil windings. CONSTITUTION: A sensor 32 has a comparator 33 and receives a signal SI and a signal SII by the comparator 33. The signal SI indicates current in the stator coil winding of an electric motor 22 and the zero point passage of the current, and the signal SII indicates the zero point passage of a voltage between coil windings. For creating the signal SI, the sensor 32 has a device 34 for measuring the coil winding current of the electric motor 22 and a device 35 for detecting the zero point passage of the current in series. For creating the signal SII, the sensor 32 has a device 36 for constituting an interface between an AC-line voltage and a low-voltage control unit 24 in series, a device 37 for detecting the zero point of the voltage, and a device 38 for generating a pulse during a specified period starting from the time when the voltage passes the zero point.