Keith H Patterson

US Patent:

20130301113, Nov 14, 2013

Filed:

Apr 17, 2013

Appl. No.:

13/865179

Inventors:

Keith D. Patterson - Los Angeles CA, US
Chiara Daraio - Pasadena CA, US
Eleftherios Gdoutos - Pasadena CA, US
Namiko Yamamoto - Pasadena CA, US
Risaku Toda - Pasadena CA, US
Victor E. White - Altadena CA, US
Harish Manohara - Arcadia CA, US
John B. Steeves - Pasadena CA, US

International Classification:

G02B 26/08

US Classification:

359298, 427100

Abstract:

A deformable mirror is configured to be deformed by surface-parallel actuation. In one embodiment, the deformable mirror includes a first piezoelectric active layer on a first surface of a substrate. The first piezoelectric active layer has a substantially uniform thickness across the first surface of the substrate. The mirror also includes a first electrode layer on the first piezoelectric active layer. The first electrode layer has a plurality of electrodes arranged in a first pattern and has a substantially uniform thickness across the first piezoelectric active layer. The mirror may further include a second piezoelectric layer on the first electrode layer, and a second electrode layer on the second piezoelectric layer. The electrodes of the first and second electrode layers are configured to supply a voltage to the piezoelectric active layers upon actuation to thereby locally deform the shape of the mirror to correct for optical aberrations.

US Patent:

20130302633, Nov 14, 2013

Filed:

Apr 17, 2013

Appl. No.:

13/865170

Inventors:

Keith D. Patterson - Los Angeles CA, US
Chiara Daraio - Pasadena CA, US
Eleftherios Gdoutos - Pasadena CA, US
Namiko Yamamoto - Pasadena CA, US
Risaku Toda - Pasadena CA, US
Victor E. White - Altadena CA, US
Harish Manohara - Arcadia CA, US
John B. Steeves - Pasadena CA, US

International Classification:

B32B 7/02
C04B 35/622
B22D 25/06
B32B 15/04

US Classification:

428593, 428116, 264255, 164 94, 219 6917

Abstract:

A micro-scaled bi-material lattice structure includes a frame comprising a first material having a first coefficient of expansion and defining a plurality of unit cells. The bi-material lattice structure further includes a plurality of plates comprising a second material having a second coefficient of expansion different from the first coefficient of expansion. One of the plates is connected to each unit cell. The bi-material lattice structure has a third coefficient of expansion different from both the first coefficient of the expansion and the second coefficient of expansion, and the bi-material lattice structure has a thickness of about 100 nm to about 3000 microns.

US Patent:

20150316763, Nov 5, 2015

Filed:

May 1, 2015

Appl. No.:

14/702567

Inventors:

- Pasadena CA, US
Mitchell Troy - Azusa CA, US
Scott A. Basinger - Pasadena CA, US
Marie Laslandes - Pasadena CA, US
Keith D. Patterson - Pasadena CA, US
John Steeves - Pasadena CA, US
Troy W. Barbee - Palo Alto CA, US
Sergio Pellegrino - Pasadena CA, US

International Classification:

G02B 26/08

Abstract:

A method and apparatus for correcting error modes of a deformable mirror, including selecting or targeting one or more target error modes of a deformable mirror; and designing a pattern and/or shape of one or more electrodes, wherein the pattern and/or shape of the electrodes are designed to optimally correct the target error modes when the electrodes are disposed on the deformable mirror via an active material. Also disclosed is a deformable structure, including a composite shell including a plurality of plies each including carbon fibers embedded in a resin; a nanolaminate comprising individual nanolayers attached to a first side of the composite shell; an actuation structure attached to a second side of the composite shell; and a flexible electrode routing layer attached to the actuation structure.