Gerald L Auth

US Patent:

6636319, Oct 21, 2003

Filed:

May 4, 2001

Appl. No.:

09/762752

Inventors:

Gerald Auth - Laguna Beach CA 92651
Roger Haddad - Corona CA 92882
Warren Vidrine - San Juan Capistrano CA 92675

International Classification:

G01B 902

US Classification:

356451, 356450, 25033907, 25033908

Abstract:

A spectrometer ( ) having an interferometer, a detector ( ) that produces a detector signal ( ), and a dual-digitizer system including two analog-to-digital converters that simultaneously digitize low-gain and high-gain versions of the detector signal, and suitable data structures and associated firmware for merging the two resulting sets of digitized data into a single, high dynamic range set of data.

US Patent:

20120156368, Jun 21, 2012

Filed:

Dec 20, 2010

Appl. No.:

12/973748

Inventors:

Gerald Auth - Laguna Beach CA, US

Assignee:

MIDAC CORPORATION - Costa Mesa CA

International Classification:

B05D 5/06
B05D 3/12

US Classification:

427162

Abstract:

Method of making a corrosion resistant gas cell including an end cap having integral reflecting mirrors and sealing surfaces, the method involving the steps of: rough shaping a plate of stainless steel to near net dimensions using a standard-precision CNC milling machine and standard cutting bits to form a near net stainless steel core; coating the near net stainless steel core with a layer of nickel that is at least 0.002″ thick by immersing the near net stainless steel core in a bath of nickel sulfamate for at least eight hours; and precision shaping the coating of nickel with a precision milling machine to form the integral reflecting mirrors and sealing surfaces of the gas cell

US Patent:

50023942, Mar 26, 1991

Filed:

Jan 30, 1990

Appl. No.:

7/472170

Inventors:

Gerald L. Auth - Laguna Beach CA

Assignee:

Midac Corporation - Costa Mesa CA

International Classification:

G01B 902

US Classification:

356346

Abstract:

An interferometer structure is disclosed in which alignment problems are reduced by providing a special retaining structure for the transparent beamsplitter plates. In order to minimize distortion of the beamsplitter plates, the metal housing surfaces, against which they are held, are each coated with a material which has a very slippery and extremely flat surface engaging the surface of the respective beamsplitter plate. The preferred coating material is polytetrafluoroethylene. A glass tool (optically flat) is used during heating (and hardening) of the coating material, for the purpose of insuring an unusually flat coating surface.

US Patent:

RE319414, Jul 9, 1985

Filed:

Jul 5, 1977

Appl. No.:

5/812590

Inventors:

Gerald L. Auth - Laguna Beach CA

Assignee:

The Gerber Scientific Instrument Company - Windsor CT

International Classification:

G01B 902
G02B 702

US Classification:

356346

Abstract:

An interferometer for analyzing electromagnetic frequency spectra including a movable mirror supported on two air bearings such that the center of support of the bearings continuously coincides with the center of gravity of the movable mirror during the motion of the mirror. The air bearings engage two parallel, spaced apart lateral rods that maintain the optical alignment of the mirror. To facilitate making spectral measurements, the interferometer also incorporates a laser for producing monochromatic light that is directed through a primary beam splitter to provide a periodic fringe pattern as the mirror moves and a white light directed through a secondary beam splitter to provide a reproducible reference point.

US Patent:

45623562, Dec 31, 1985

Filed:

Aug 17, 1984

Appl. No.:

6/641835

Inventors:

Gerald L. Auth - Laguna Beach CA

Assignee:

Midac Corporation - Costa Mesa CA

International Classification:

G01J 300

US Classification:

2504581

Abstract:

An apparatus, for photo-luminescent analysis of the surface of crystalline silicon, is disclosed, in which the photons emitted from the sample are passed through a two-beam (or two-arm) interferometer, having the usual beamsplitter, fixed mirror, and movable mirror. The interferometer output is directed to a detector which is a germanium photo-diode, cooled in a Dewar, which also cools the initial electronic circuitry to which the detector output is input. Using the disclosed apparatus, methods are available for readily eliminating the negative effect of the electron-hole-droplet phenomenon, and for utilizing the no-photon region of the spectrum to identify otherwise unidentified impurity (or dopant) materials.

US Patent:

39899381, Nov 2, 1976

Filed:

Nov 7, 1974

Appl. No.:

5/521796

Inventors:

Gerald L. Auth - Laguna Beach CA

Assignee:

Eocom Corporation - Irvine CA

International Classification:

G06F 1534

US Classification:

23515135

Abstract:

An interference spectrometer which analyzes an unknown light beam for determining the presence and amount of particular frequency by passing the light beam through an interferometer with a moving mirror, which transforms the beam into a first signal which represents the inverse Fourier transform of the electrical light beam. An associated laser beam is also processed by the interferometer and detected to give a second signal. The first signal is sampled at each periodic variation of the second to generate a discrete signal which is then digitized. A digital Fourier series frequency component synthesizer synthesizes preselected discrete frequency components of the incoming beam which correspond, for example, to the gaseous components of interest. A particular gas handling apparatus is disclosed which is adapted to handle unstable inhomogeneous gases such as automobile exhaust fumes.

US Patent:

46936033, Sep 15, 1987

Filed:

Oct 21, 1985

Appl. No.:

6/789849

Inventors:

Gerald L. Auth - Laguna Beach CA

Assignee:

MIDAC Corporation - Costa Mesa CA

International Classification:

G01B 902

US Classification:

356346

Abstract:

A small ruggedized interferometer is disclosed, which can operate efficiently in spite of being subject to ambient mechanical vibrations. A prior art structure was analyzed to diagnose its performance deficiencies. The successful method is a step by step structural solution, beginning with the lowest frequency mechanical vibration resonance in the interferometer, restructuring to raise that frequency, then proceeding to the next lowest mechanical vibration resonance frequency in the interferometer, and so on. The movable mirror is carried by a parallelogram linkage. The minimum resonance in the present interferometer has been raised to approximately 1000 Hertz. A first (lowest) frequency resonance problem solved was due to the motor and its interface with the movable mirror. A second resonance problem solved was due to the vibration of the movable mirror itself. And a third resonance problem solved was due to the bearing means which pivotally connect the parallelogram linkage to the frame and to the movable mirror.

US Patent:

46716564, Jun 9, 1987

Filed:

Mar 20, 1985

Appl. No.:

6/713764

Inventors:

Gerald L. Auth - Laguna Beach CA

Assignee:

Midac Corporation - Costa Mesa CA

International Classification:

G01B 902

US Classification:

356346

Abstract:

There is disclosed an adjustment structure for use in initially aligning the two arms of an interferometer, by varying slightly the angular position of mirror surfaces. Two "wedge" elements are used behind the mirror, each of which is independently rotatable about an axis perpendicular to the face of the mirror. In order to provide ideal lubrication between the relatively movable flat engaging surfaces, a solid layer of a low friction polymer is used, preferably polytetrafluoroethylene.