Wei Yu Su

US Patent:

7859194, Dec 28, 2010

Filed:

Oct 30, 2006

Appl. No.:

11/590606

Inventors:

Jerry Walker - Vallejo CA, US
Arie Ravid - Fremont CA, US
Wei Su - Sunnyvale CA, US
Ronald A. Lesea - Redwood City CA, US

International Classification:

H05B 37/02

US Classification:

315209R

Abstract:

A short arc lamp driving circuit includes a trigger boosting circuit, a flash current control circuit, and a closed loop exposure control and calibration circuits that, when combined, can produce short pulses of light with short time separation, quasi-continuous illumination light, and meanwhile, an extremely large dynamic range of delivered and/or calibrated light power or energy.

US Patent:

58220364, Oct 13, 1998

Filed:

Mar 18, 1997

Appl. No.:

8/820224

Inventors:

Norbert A. Massie - San Ramon CA
Wei Su - Livermore CA

Assignee:

Research Development Foundation - Carson City NV

International Classification:

A61B 300

US Classification:

351219

Abstract:

An eye imaging system having a portable image capture unit having a circular light guide positioned adjacent to and behind a corneal contact lens for controlling directing light over a wide field to the retina of an eye and provide more light towards the center of the eye.