JPS6118481Y2
(ja)
*
|
1980-05-09 |
1986-06-05 |
|
|
US4580878A
(en)
*
|
1981-07-20 |
1986-04-08 |
Canon Kabushiki Kaisha |
Picture taking optical system for color video camera
|
US4571030A
(en)
*
|
1983-04-04 |
1986-02-18 |
Cooper Lasersonics, Inc. |
Sum-beam separator using critical angle
|
US4919522A
(en)
*
|
1988-02-25 |
1990-04-24 |
Geo-Centers, Inc. |
Optical switch having birefringent element
|
US5265079A
(en)
|
1991-02-15 |
1993-11-23 |
Applied Magnetics Corporation |
Seek actuator for optical recording
|
US6141300A
(en)
*
|
1989-06-20 |
2000-10-31 |
Discovision Associates |
Optical actuator including lens assembly with optical axis having symmetric suspensory forces acting thereon and optical disc system including same
|
US5109189A
(en)
*
|
1990-02-27 |
1992-04-28 |
Geo-Centers, Inc. |
Single crystal electro-optic sensor with three-axis measurement capability
|
US5172186A
(en)
*
|
1990-07-03 |
1992-12-15 |
Konica Corporation |
Laser interferometry length measuring an apparatus employing a beam slitter
|
US5090824A
(en)
*
|
1990-07-31 |
1992-02-25 |
Geo-Centers, Inc. |
Fast optical switch having reduced light loss
|
GB2248989B
(en)
*
|
1990-10-15 |
1995-05-24 |
Applied Magnetics Corp |
Focus sensing apparatus and method
|
US5245174A
(en)
*
|
1990-10-15 |
1993-09-14 |
Applied Magnetics Corporation |
Focus sensing apparatus utilizing a reflecting surface having variable reflectivity
|
US5677899A
(en)
*
|
1991-02-15 |
1997-10-14 |
Discovision Associates |
Method for moving carriage assembly from initial position to target position relative to storage medium
|
US5729511A
(en)
*
|
1991-02-15 |
1998-03-17 |
Discovision Associates |
Optical disc system having servo motor and servo error detection assembly operated relative to monitored quad sum signal
|
US5808980A
(en)
*
|
1991-02-15 |
1998-09-15 |
Discovision Associates |
Seek actuator for optical recording
|
US6069857A
(en)
*
|
1991-02-15 |
2000-05-30 |
Discovision Associates |
Optical disc system having improved circuitry for performing blank sector check on readable disc
|
US6236625B1
(en)
|
1991-02-15 |
2001-05-22 |
Discovision Associates |
Optical disc system having current monitoring circuit with controller for laser driver and method for operating same
|
US5657164A
(en)
*
|
1991-05-28 |
1997-08-12 |
Discovision Associates |
Optical beamsplitter
|
US5331622A
(en)
*
|
1991-05-28 |
1994-07-19 |
Applied Magnetics Corporation |
Compact optical head
|
DE4132025C2
(de)
*
|
1991-09-26 |
1994-07-21 |
Hell Ag Linotype |
Lichtstrahl-Ablenkvorrichtung
|
US5305136A
(en)
*
|
1992-03-31 |
1994-04-19 |
Geo-Centers, Inc. |
Optically bidirectional fast optical switch having reduced light loss
|
US5298964A
(en)
*
|
1992-03-31 |
1994-03-29 |
Geo-Center, Inc. |
Optical stress sensing system with directional measurement capabilities
|
US5319483A
(en)
*
|
1992-12-04 |
1994-06-07 |
Williams Telecommunications Group, Inc. |
Polarization independent low cross-talk optical circulator
|
US5400418A
(en)
*
|
1992-12-04 |
1995-03-21 |
Williams Telecommunication Group, Inc. |
Polarization independent all-fiber optical circulator
|
US5644428A
(en)
*
|
1993-03-03 |
1997-07-01 |
International Business Machines Corporation |
Continuously variable beam splitter
|
US5414540A
(en)
*
|
1993-06-01 |
1995-05-09 |
Bell Communications Research, Inc. |
Frequency-selective optical switch employing a frequency dispersive element, polarization dispersive element and polarization modulating elements
|
US5483342A
(en)
*
|
1993-06-25 |
1996-01-09 |
Hughes Aircraft Company |
Polarization rotator with frequency shifting phase conjugate mirror and simplified interferometric output coupler
|
US5748578A
(en)
*
|
1995-01-25 |
1998-05-05 |
Discovision Associates |
Colpitts type oscillator having reduced ringing and improved optical disc system utilizing same
|
US5920539A
(en)
*
|
1995-01-25 |
1999-07-06 |
Discovision Associates |
Apparatus and method for suppression of electromagnetic emissions having a groove on an external surface for passing an electrical conductor
|
US6434087B1
(en)
|
1995-01-25 |
2002-08-13 |
Discovision Associates |
Optical disc system and method for controlling bias coil and light source to process information on a storage medium
|
US6091684A
(en)
*
|
1995-01-25 |
2000-07-18 |
Discovision Associates |
Optical disc system and method for changing the rotational rate of an information storage medium
|