Arthur Phillip Ginsburg

US Patent:

55528422, Sep 3, 1996

Filed:

Nov 10, 1994

Appl. No.:

8/337624

Inventors:

Arthur P. Ginsburg - Danville CA
Lawrence P. Tessler - Lake Orion MI
Craig Fries - Oakland CA
Jonathan Tifft - Berkeley CA

Assignee:

Vision Sciences Research Corp. - San Ramon CA

International Classification:

A61B 310

US Classification:

351205

Abstract:

A segmented objective vision test is administered to a patient for determining a quantitative measurement of vision capability in the tested segments. Human vision can be tested in separate segments of the total vision spectrum including contrast sensitivity, or color sensitivity testing. Thereafter, an emmetropic real world image is filtered into corresponding emmetropic image segments. These corresponding emmetropic image segments are degraded into degraded image segments in correspondence with the separate test results for each corresponding separate segment of the total vision spectrum. The degraded image segments are then added to produce an objectively altered real world image. This objectively altered real world image can then be compared to the real world image of the emmetrope and a record preserved of the patient's actual vision condition as evidenced by the objective vision test and the subsequent image processing.

US Patent:

59697920, Oct 19, 1999

Filed:

May 8, 1998

Appl. No.:

9/075386

Inventors:

Arthur Ginsburg - Walnut Creek CA

International Classification:

G03B 1700

US Classification:

351243

Abstract:

A process for testing vision sensitivity from a target is set forth. Specifically, I illuminate the vision sensitivity chart with only indirect light and in the total absence of direct light. In the preferred embodiment, the contrast sensitivity chart is placed in an enclosure and provided with only indirect illumination of a desired intensity. The indirect illumination is such that all light illuminating the vision sensitivity target first indirectly rebounds from a surface and only then is incident upon the vision sensitivity target. At the same time, light rays on the target from this illumination cannot directly rebound into the direct viewer of the subject being tested. With an enclosure having this characteristic, paired viewing apertures are provided and spaced from the eye to provide the eye with a clear the contrast sensitivity chart. Offset from the eye and at a solid angle emulating a real life night driving light source, such as a headlight, light having a direct glare is introduced to the eye. Thereafter, for various indirect light levels on the contrast sensitivity chart, measurements are made with and without glare from the glare sources being present.

US Patent:

44266634, Jan 17, 1984

Filed:

Jan 6, 1982

Appl. No.:

6/337348

Inventors:

David W. Evans - Beavercreek OH
Arthur P. Ginsburg - Dayton OH

Assignee:

The United States of America as represented by the Secretary of the Air
Force - Washington DC

International Classification:

H04N 574
H04N 931
G01B 902

US Classification:

358211

Abstract:

In a system for real-time coherent optical filtering of visual imagery which encompasses a laser and a set of lenses for transmitting a visual target image of an input, a Fabry-Perot interferometer for filtering the target image to produce a filtered target image at an output having a predetermined bandwidth of spatial frequency information, the improvements relate to the output being in the form of a low-light level video system capable of detecting the filtered image even when at a low level of luminance, and a laser adjustable in operating power between low and high levels and in operating wavelength within a wide range for adjusting the bandwidths of the interferometer between narrow and broad ranges.

US Patent:

48004049, Jan 24, 1989

Filed:

Sep 22, 1986

Appl. No.:

6/910000

Inventors:

Arthur P. Ginsburg - Dayton OH
David W. Evans - Dayton OH
Kenneth Blauvelt - Centerville OH

Assignee:

Vistech Consultants, Inc. - Beavercreek OH

International Classification:

A61B 302
A61B 300

US Classification:

351243

Abstract:

Glare testing apparatus enclosed in a housing includes multiple discrete light sources for creating a glare condition in the field of view from an individual being tested to a target, and provision is made for selecting the location or locations of active glare sources, which includes a centrally located source of headlight glare, and a plurality of peripheral sources which can be energized selectively or collectively. Provision is also made for adjusting target luminance, glare intensity and the apparent distance between the target and the eye position in order to test near and far visual acuity under varied conditions of luminance and glare.

US Patent:

54144795, May 9, 1995

Filed:

Dec 17, 1990

Appl. No.:

7/628786

Inventors:

Arthur P. Ginsburg - San Ramon CA

International Classification:

A61B 302

US Classification:

351239

Abstract:

A method and apparatus for measuring and quantifying generalized visual sensitivity in terms of contrast sensitivity, spatial frequency response and eye brain recognition of image alignments or shapes is disclosed. A multiplicity of distinctly different information areas are provided, each of these information areas being generally delineated by indicia so as to eliminate patient or system search for an image and to generally designate the proximity of the information area for visual interrogation. The information areas may contain a grating having successive parallel aligned light and dark areas, which parallel aligned light and dark areas have a substantially linear character with the contrast levels and/or spatial frequency or size of occurrence differing for different information areas. Each successive information area has a background with mean luminance being the average of that mean luminance found within the information area. Further, all information areas are provided with a taper at their edges, preferably a Gaussian taper, which taper imparts to the edges boundaries that blend into the mean luminance background.

US Patent:

55006990, Mar 19, 1996

Filed:

Mar 8, 1995

Appl. No.:

8/400913

Inventors:

Arthur P. Ginsburg - San Ramon CA

International Classification:

A61B 302

US Classification:

351239

Abstract:

A method and apparatus for measuring and quantifying generalized visual sensitivity in terms of contrast sensitivity, spatial frequency response and eye brain recognition of image alignments or shapes is disclosed. A multiplicity of distinctly different information areas are provided, each of these information areas being generally delineated by indicia so as to eliminate patient or system search for an image and to generally designate the proximity of the information area for visual interrogation. The information areas may contain a grating having successive parallel aligned light and dark areas, which parallel aligned light and dark areas have a substantially linear character with the contrast levels and/or spatial frequency or size of occurrence differing for different information areas. Each successive information area has a background with mean luminance being the average of that mean luminance found within the information area. Further, all information areas are provided with a taper at their edges, preferably a Gaussian taper, which taper imparts to the edges boundaries that blend into the mean luminance background.

US Patent:

48590525, Aug 22, 1989

Filed:

Nov 4, 1988

Appl. No.:

7/268629

Inventors:

Diana R. McFarland - Dayton OH
Robert P. Ginsburg - Dayton OH
Arthur P. Ginsburg - Dayton OH

Assignee:

Vistech Consultants, Inc. - Beavercreek OH

International Classification:

A61B 302

US Classification:

351239

Abstract:

A portable screen assembly for use in combination with a series of visual acuity testing cards to test the visual acuity of an infant or otherwise functionally young (handicapped) person requiring to be held by another person comprises a three-panel screen wherein two side panels are hingedly connected to a main panel in such manner that they can be moved from folded positions overlying the back face of the main panel to positions wherein each defines a predetermined obtuse angle with the front side of the panel. A removable and collapsible brace connects the upper free corners of the side panels to hold the screen assembly in its erected position, and this brace cooperates with the main panel and a bracket of rod material to support a shield which blocks the line of view between the person holding the person under test and an opening in the main panel where successive acuity testing cards are presented to the person under test. In its erected condition, this screen assembly provides a stable and sturdy testing installation, and it is quickly and easily collapsed for storage or transportation between different locations of use.

US Patent:

47892340, Dec 6, 1988

Filed:

Jan 2, 1987

Appl. No.:

7/000254

Inventors:

Arthur P. Ginsburg - Dayton OH
David A. Ginsburg - Dayton OH
Robert P. Ginsburg - Dayton OH

Assignee:

Vistech Consultants, Inc. - Beavercreek OH

International Classification:

A61B 302

US Classification:

351239

Abstract:

The motion contrast visual sensitivity of an individual is tested by means of a target having thereon patches each composed of alternating light and dark bars, with individual patches varying in contrast and spatial frequency, and also in orientation. The target is viewed by way of a slot through a housing positioned in front of the individual under test, and a shutter rotating within the housing at a controlled speed periodically blocks the slot at a rate sufficiently slow, e. g. 30 cycles per second, for the observer to detect the resulting conditions of flicker.