Kevin D Yu

6462888, Oct 8, 2002

Jan 12, 2001

09/759388

Gajendra D. Savant - Torrance CA
Kevin H. Yu - Temple City CA
Andrew A. Kostrzewski - Garden Grove CA

Physical Optics Corporation - Torrance CA

G02B 1320

359707, 359708, 359599, 359834

A diffuser master is provided which is manufactured mechanically instead of holographically. The master can be made from a suitable substrate including relatively hard materials such as plastic, glass or metal. A substrate having a first side is worked to form a diffuser surface relief structure thereon. The substrate can be buffed using a buffing agent of a selected grit in order to form surface scratches in the first side of the substrate. The substrate can also be blasted with shot particles in order to form indentations and depressions in the first side. The substrate can alternatively be acid or alkali etched in order to form surface irregularities in the first side. The scratches, depressions or irregularities can be formed in order to create a desired surface relief and hence desired diffuser output characteristics.

8114248, Feb 14, 2012

Jan 3, 2007

11/649428

Kang Lee - Westminster CA, US
Nanda Nathan - Huntington Beach CA, US
Engin Arik - Thousand Oaks CA, US
Thomas Forrester - Hacienda Heights CA, US
Tomasz Jannson - Torrance CA, US
Edward M. Kaiser - Redondo Beach CA, US
Kevin H. Yu - Temple City CA, US

Asahi Kasei Kabushiki Kaisha - Osaka

B29C 65/02
B29C 65/52
B29C 65/56
B32B 37/10
B32B 37/14
B32B 37/26
B32B 38/06
B32B 38/10
B29C 65/54
B32B 37/02
B32B 37/04

156715, 156289, 1563069, 156714, 156719

A method and system referred to as PALM (Patterning by Adhesive of Large Relief Three-Dimensional Microstructures) with large reliefs exceeding 1 μm and being as large as 100 μm. The microstructures can be either deterministic (such as microprisms), or random (such as diffusers), the first obtained by copying an original supermaster, and latter obtained by copying a laser speckle pattern. The master process entails copying a supermaster into the form of the microstructure constituting a pattern on the patterning cylinder (called a drum), to be then continuously multiplied in the PALM system, in a continuous roll-to-roll web process. The latter method, together with the related system, is the subject of this invention. The rolls continuously repeat the master pattern, copying by adhesive with large viscosity on acrylic (hybrid) as well as by a monolithic process. The monolithic process can be accomplished using temperature and pressure, or by UV-cured polymerization.

20010001459, May 24, 2001

Jan 12, 2001

09/759773

Gajendra Savant - Torrance CA, US
Kevin Yu - Temple City CA, US
Andrew Kostrzewski - Garden Grove CA, US

Physical Optics Corporation

G02F001/1335
B29D011/00
C23F001/00
C03C015/00

216/024000, 216/026000, 216/085000, 216/089000, 349/064000

A diffuser master is provided which is manufactured mechanically instead of holographically. The master can be made from a suitable substrate including relatively hard materials such as plastic, glass or metal. A substrate having a first side is worked to form a diffuser surface relief structure thereon. The substrate can be buffed using a buffing agent of a selected grit in order to form surface scratches in the first side of the substrate. The substrate can also be blasted with shot particles in order to form indentations and depressions in the first side. The substrate can alternatively be acid or alkali etched in order to form surface irregularities in the first side. The scratches, depressions or irregularities can be formed in order to create a desired surface relief and hence desired diffuser output characteristics.

20010002355, May 31, 2001

Jan 12, 2001

09/759387

Gajendra Savant - Torrance CA, US
Kevin Yu - Temple City CA, US
Andrew Kostrzewski - Garden Grove CA, US

Physical Optics Coporation

B24B001/00

451/038000

A diffuser master is provided which is manufactured mechanically instead of holographically. The master can be made from a suitable substrate including relatively hard materials such as plastic, glass or metal. A substrate having a first side is worked to form a diffuser surface relief structure thereon. The substrate can be buffed using a buffing agent of a selected grit in order to form surface scratches in the first side of the substrate. The substrate can also be blasted with shot particles in order to form indentations and depressions in the first side. The substrate can alternatively be acid or alkali etched in order to form surface irregularities in the first side. The scratches, depressions or irregularities can be formed in order to create a desired surface relief and hence desired diffuser output characteristics.

20070073618, Mar 29, 2007

Sep 29, 2005

11/238359

Kevin Yu - Cerritos CA, US
Joseph Chong - San Francisco CA, US
Alan Tien - Sunnyvale CA, US

G06Q 40/00

705040000

A method and system to transfer payment to a seller of a network-based commerce transaction are described herein. The method includes generating a risk model based on seller-specific criteria, and releasing funds from a holding account to the seller based on the risk model.

20100157400, Jun 24, 2010

Nov 17, 2009

12/620538

Fedor Dimov - Redondo Beach CA, US
Tin Aye - Mission Viejo CA, US
Kevin Yu - Temple City CA, US
Svetlana Soboleva - Torrance CA, US
Khin Swe Yin - Alhambra CA, US
Myo Kyaw - Rosemead CA, US
Dmitry Voloschenko - Torrance CA, US

G03H 1/04
G02B 5/32
G03H 1/22

359 13, 359 19

A holographic substrate-guided wave-based see-through display can has a microdisplay, capable of emitting light in the form of an image. The microdisplay directs its output to a holographic lens, capable of accepting the light in the form of an image from the microdisplay, and capable of transmitting the accepted light in the form of an image. The holographic lens couples its output to an elongate transparent substrate, capable of accepting the light in the form of an image from the holographic lens at a first location, and transmitting the light in the form of an image along a length of the substrate by total internal reflection to a second location spaced from the first location, the elongate substrate being capable of transmitting the accepted light in the form of an image at the second location. The substrate couples out what it receives to a transparent holographic grating, capable of accepting the light transmitted from the elongate substrate and transmitting it to a location outside of the holographic grating as a viewable image.

20120089449, Apr 12, 2012

Oct 7, 2010

12/899783

Kevin Yu - Irvine CA, US
Paul Della Bitta - Laguna Niguel CA, US

G06Q 30/00

705 1423, 705 11, 705319, 235375, 705 271

A system and method for providing a promotion over a computer network includes determining a potential promotion for an item, determining a threshold number of uncommitted endorsements required to unlock the potential promotion, and displaying the potential promotion and the threshold number of uncommitted endorsements to at least one potential buyer over the computer network before the threshold number is reached. The method further includes receiving endorsement data including an actual number of uncommitted endorsements made over the computer network, tracking the actual number of uncommitted endorsements, and unlocking the potential promotion for the item when the actual number of uncommitted endorsements reaches the threshold number, thereby converting the potential promotion to an actual promotion.

20120170090, Jul 5, 2012

Dec 29, 2011

13/339942

Fedor Dimov - Redondo Beach CA, US
Khin Swe Yin (a/k/a Lillian Yin) - Alhambra CA, US
Kevin Yu - Temple City CA, US
Engin Arik - Moonpark CA, US
Dmitry Voloschenko - Torrance CA, US

Luminit LLC - Torrance CA

G02B 5/32

359 15

A collimator can be made of a compound holographic optical element made of three holographic optical elements. The first reflection holographic optical element will have recorded within it continuous lens configured to receive light from a diffuse light beam and diffract the received light as a first collimated light beam. The second reflection holographic optical element will have recorded within it a regular hologram that is configured to permit the light from the diffuse light source to transmit through it to reach the first reflection holographic element, the second reflection holographic element having within it a second holographically reflective structure configured to receive the first collimated light beam and diffract the first collimated light beam as a second collimated light beam. The third transmission holographic optical element is configured to receive the second collimated light beam and diffract it as a third holographic light beam.