David M Heffelfinger

US Patent:

6853454, Feb 8, 2005

Filed:

Jan 15, 2004

Appl. No.:

10/758576

Inventors:

David M. Heffelfinger - Sequim WA, US

Assignee:

Alpha Innotech Corporation - San Leandro CA

International Classification:

G01N021/47

US Classification:

356446, 356394, 356398, 25955931, 382103

Abstract:

A system for optical detection of kinetic samples. The system includes a dual set of detectors linked to a single processor. The time of signal integration is different for each detector, allowing one detector to have a higher sensitivity by integrating over a longer time period while the second detector using shorter integration periods is able to measure kinetic events.

US Patent:

6995901, Feb 7, 2006

Filed:

Jan 15, 2004

Appl. No.:

10/758140

Inventors:

David M. Heffelfinger - Sequim WA, US

Assignee:

Alpha Innotech Corporation - San Leandro CA

International Classification:

G02B 21/00

US Classification:

359381, 356417, 356418

Abstract:

A system for the optical analysis of a sample. An illumination source illuminates the sample, exciting fluorescence. The fluorescence is collected by an objective lens, which transmits the collected illumination light onto an imaging lens, which focuses the collected light onto an area array detector. Collected light rays between the objective lens and the imaging lens are parallel and pass through an emission filter. Both the objective lens and the imaging lens are positioned on a mount that allows an alternative objective or imaging lens to be positioned to collect or image the emitted light. Any objective lens/imaging lens pair is optically symmetrical, greatly reducing the optically degrading effects.

US Patent:

7948184, May 24, 2011

Filed:

Oct 2, 2007

Appl. No.:

11/906573

Inventors:

David M. Heffelfinger - Sequim WA, US
David A. Pringle - Los Angeles CA, US
David B. McDonald - Santa Clarita CA, US
Ashot Nalbandyan - Granada Hills CA, US

Assignee:

Luminys Systems Corp. - Hollywood CA

International Classification:

B60Q 1/14

US Classification:

315 77, 315 82

Abstract:

A vehicle testing lamp system comprising an onboard controller unit, an off-board controller unit, and a lamp fixture. The onboard controller unit comprises a solid state relay, the solid state relay being switchable between an idle output power setting and a high output power setting; a timing circuit,; a transfer circuit; a current sensor; a current regulator; and batteries or other auxiliary power supply. The off-board controller unit comprises a power supply electrically connected to a voltage booster circuit. The lamp fixture comprises an ignitor; a shock mount; and a lamp that is electrically connected to the igniter. The off-board controller supplies power to the lamp at its idle level. The onboard transfer circuit permits the off-board power supply to be disconnected while the onboard controller unit maintains the lamp at idle, and the onboard timing circuit limits the time that the lamp remains at high output. Also disclosed is a method for using a vehicle testing lamp system.

US Patent:

20040150217, Aug 5, 2004

Filed:

Jan 22, 2004

Appl. No.:

10/762851

Inventors:

David Heffelfinger - Sequim WA, US
Gregory Fisher - Hayward CA, US
Charles Smith - Sacramento CA, US
David Schneck - San Jose CA, US

International Classification:

G01N021/00

US Classification:

283/081000, 356/436000

Abstract:

A fluorescent identification and focusing target indicia and associated methods for use. The indicia is used to label a substrate, and may subsequently be used first as a target to focus the optical analysis and next as a specific identifier of the substrate and/or of reagents used with the substrate. The label may be a separate layer joined to the substrate by an adhesive. The indicia may include multiple dyes, a dye that produces fluorescence in a plurality of channels, a reflective component, a human interpretable component, a quantification means, a sizing standard, or other components.

US Patent:

20050157299, Jul 21, 2005

Filed:

Jan 15, 2004

Appl. No.:

10/758497

Inventors:

David Heffelfinger - Sequim WA, US

International Classification:

G01N021/64

US Classification:

356417000, 356418000, 250458100

Abstract:

An optical analysis system and method including a spatial light modulator that directs light to localized targets. The localized light activates or “uncages” a reagent that locally interacts with a sample. This system may be part of an optical analysis system that detects kinetic events and allows for variable magnification of a discrete target sample.