Joseph John Drake

US Patent:

6360035, Mar 19, 2002

Filed:

Jun 2, 2000

Appl. No.:

09/587063

Inventors:

Joseph Drake - Mountain View CA
Jeffrey P. Wilde - Los Gatos CA
Joseph E. Davis - Morgan Hill CA
John F. Heanue - Fremont CA
Kurt E. Petersen - San Jose CA
Terry McDaniel - Morgan Hill CA
Jeff Drazan - Atherton CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G02B 626

US Classification:

385 18, 385 16

Abstract:

An optical microswitch for use with a laser beam comprising a support body and first and second output fibers carried by the body. An electrostatic microactuator is carried by the body and extends in a plane. A micromirror is disposed out of the plane. The microactuator has a mirror holder coupled to the micromirror and at least one comb drive assembly coupled to the mirror holder for driving the micromirror about an axis of rotation extending perpendicular to the plane between a first position for reflecting the laser beam to the first output fiber and a second position for reflecting the laser beam to the second output fiber.

US Patent:

6392775, May 21, 2002

Filed:

Jan 26, 2000

Appl. No.:

09/491427

Inventors:

Joseph D Drake - Palo Alto CA
John H. Jerman - Palo Alto CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G02B 2608

US Classification:

359224, 359223, 359582, 359585, 257431, 257432

Abstract:

The present invention includes a structure, apparatus, and method by which the reflectivity of a micro-machined reflector can be improved. The present invention increases the mirrors reflectivity at 650 nm, increases its reflectivity at 410 nm, and improves its long-term reliability. The reflectivity at other wavelengths may also be improved. Also, the present invention minimizes mirror plate distortion while providing a suitable fabrication approach.

US Patent:

6594057, Jul 15, 2003

Filed:

Jun 5, 2000

Appl. No.:

09/587675

Inventors:

Joseph D. Drake - Palo Alto CA
John H. Jerman - Palo Alto CA
John D. Grade - Mountain View CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G02B 2608

US Classification:

359224, 359198, 359199, 359223, 359896, 73570

Abstract:

A micromachined device of micron dimensions comprising a base and a movable member spaced apart from the base. The movable member has first and second end portions and an axis extending between the first and second end portions. First and second torsional members extend along the axis and are connected to the respective first and second end portions for permitting the movable member to rock between first and second positions about the axis relative to the base. The first and second torsional members are secured to the base. At least a portion of the movable member is of a conductive material. First and second spaced-apart electrodes are carried by the base for driving the movable member between the first and second positions. A tether member extends transversely of the axis and is secured to the first torsional member and to the base whereby the tether member regulates the rocking of the movable member.

US Patent:

6787969, Sep 7, 2004

Filed:

Jun 6, 2001

Appl. No.:

09/876265

Inventors:

John D. Grade - Mountain View CA
John H. Jerman - Palo Alto CA
Kevin Y. Yasumura - Danville CA
Joseph D. Drake - Palo Alto CA

Assignee:

Iolon, Inc. - San Jose CA

International Classification:

H02N 100

US Classification:

310309, 359223, 359298, 7350412

Abstract:

A damped micromechanical device comprising a substrate, a movable structure overlying the substrate and a flexural member having a first end portion coupled to the substrate and a second end portion coupled to the movable structure. The movable structure is movable at a resonant frequency between first and second positions relative to the substrate. A damping material is adhered to at least a portion of the flexural member for damping the movement of the movable structure at the resonant frequency. A method for making the micromechanical device is provided.

US Patent:

6798729, Sep 28, 2004

Filed:

Mar 18, 1999

Appl. No.:

09/271440

Inventors:

Joseph Drake - Mountain View CA
Jeffrey P. Wilde - Los Gatos CA
Joseph E. Davis - Morgan Hill CA
John F. Heanue - Fremont CA
Kurt E. Petersen - San Jose CA
Terry McDaniel - Morgan Hill CA
Jeff Drazan - Atherton CA

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G11B 700

US Classification:

369119, 369 4419

Abstract:

An optical head utilizes a micro-machined element in combination with a light source and a lens to write and read data onto a storage disk. The micro-machined element may include a steerable micro-machined mirror or a micro-actuator. A beam of laser light transmitted from the light source to the optical head and a reflected light from the storage disk is altered by a movement of the micro-machined element. In this manner a focused optical spot is scanned back and forth in a direction which is approximately parallel to the radial direction of the storage disk.

US Patent:

6836584, Dec 28, 2004

Filed:

Mar 14, 2000

Appl. No.:

09/524727

Inventors:

John H. Jerman - Palo Alto CA
John D. Grade - Mountain View CA
Joseph D. Drake - Mountain View CA
Kurt E. Petersen - San Jose CA

Assignee:

Iolon, Inc. - San Jose CA

International Classification:

G02B 635

US Classification:

385 18, 385 25, 359223

Abstract:

An optical microswitch for use with a laser beam that extends along a path comprising a body having an inlet port adapted to receive the laser beam and a plurality of outlet ports. A plurality of mirrors coupled to a plurality of micromotors carried by the body. The micromotors selectively move the mirrors from a first position out of the path of the laser beam to a second position into the path of the laser beam to direct the laser beam to one of the outlet ports. Each of the micromotors has at least one electrostatically-driven comb drive assembly therein for moving the respective mirror to one of the first and second positions. A controller is electrically coupled to the micromotors for providing control signals to the micromotors.

US Patent:

20030094881, May 22, 2003

Filed:

Jun 6, 2001

Appl. No.:

09/876203

Inventors:

John Grade - Mountain View CA, US
John Jerman - Palo Alto CA, US
Joseph Drake - Palo Alto CA, US

International Classification:

H02N001/00

US Classification:

310/309000

Abstract:

A damped micromechanical device comprising a housing provided with an internal fluid-tight chamber and an electrically-driven microactuator disposed in the fluid-tight chamber. The microactuator has a movable structure capable of being moved between first and second positions at a resonant frequency. A damping fluid is disposed in the fluid-tight chamber for damping the movement of the movable structure at the resonant frequency.

US Patent:

6200882, Mar 13, 2001

Filed:

Nov 13, 1998

Appl. No.:

9/191502

Inventors:

Joseph D. Drake - Palo Alto CA
John H. Jerman - Palo Alto CA
Kathy J. Jackson - Cupertino CA

Assignee:

Seagate Technology, Inc. - Scotts Valley CA

International Classification:

H01L 2146
H01L 2178
H01L 21301

US Classification:

438464

Abstract:

A method for processing a plurality of mirror assemblies formed together from a silicon wafer. The method includes the steps of exposing the mirror assemblies to an acid release etch to produce released mirror assemblies and rinsing the released mirror assemblies to produce washed mirror assemblies. The washed mirror assemblies are dried to produce dried mirror assemblies and the dried mirror assemblies are mounted onto a mounting tape to produce mounted mirror assemblies. The mounted mirror assemblies are diced or scribed to produce a plurality of separated mirror assemblies, which are separated from the mounting tape so as to produce a plurality of discrete mirror assemblies.