Ellis I. Betensky

Person

New York, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Zoom lens with short back focal length
- Patent number RE35775
- Issue date Apr 21, 1998
- Ellis I. Betensky
- 359 - Optical: systems and elements
Information Patent Grant
Method for correcting field curvature
- Patent number 5,677,797
- Issue date Oct 14, 1997
- U.S. Precision Lens Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Wide angle binocular system with variable power capability
- Patent number 5,576,888
- Issue date Nov 19, 1996
- BenOpcon, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Wide angle binocular system with variable power capability
- Patent number 5,532,875
- Issue date Jul 2, 1996
- BenOpcon, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Wide angle binocular system with variable power capability
- Patent number 5,500,769
- Issue date Mar 19, 1996
- BenOpcon, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Wide angle binocular system with variable power capability
- Patent number 5,499,140
- Issue date Mar 12, 1996
- BenOpcon, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom lens having weak front lens group
- Patent number 5,493,448
- Issue date Feb 20, 1996
- Eastman Kodak Company
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom lens systems
- Patent number 5,485,313
- Issue date Jan 16, 1996
- Polaroid Corporation
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom lens having weak plastic element
- Patent number 5,428,480
- Issue date Jun 27, 1995
- Eastman Kodak Company
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Wide angle binocular system with variable power capability
- Patent number 5,371,626
- Issue date Dec 6, 1994
- BenOpcon, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom lens having weak front lens group
- Patent number 5,315,440
- Issue date May 24, 1994
- Eastman Kodak Company
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom projection lens systems
- Patent number 5,313,330
- Issue date May 17, 1994
- U.S. Precision Lens Incorporated
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Real image viewfinder requiring no field lens
- Patent number 5,241,337
- Issue date Aug 31, 1993
- Eastman Kodak Company
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Real image zoom viewfinder
- Patent number 5,182,592
- Issue date Jan 26, 1993
- Eastman Kodak Company
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Compact zoom lens with high zoom ratio
- Patent number 4,991,943
- Issue date Feb 12, 1991
- Lenzar Optics Corp.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom lens with short back focal length
- Patent number 4,936,661
- Issue date Jun 26, 1990
- Opcon Associates, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom lens
- Patent number 4,838,668
- Issue date Jun 13, 1989
- Eastman Kodak Company
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Wide-angle zoom lens
- Patent number 4,828,372
- Issue date May 9, 1989
- Eastman Kodak Company
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Projection lens with color correction
- Patent number 4,815,831
- Issue date Mar 28, 1989
- U.S. Precision Lens, Incorporated
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Wide angle projection lens
- Patent number 4,801,196
- Issue date Jan 31, 1989
- U.S. Precision Lens, Incorporated
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
SLR zoom camera
- Patent number 4,757,372
- Issue date Jul 12, 1988
- Eastman Kodak Company
- Ellis I. Betensky
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Autofocusing zoom lens
- Patent number 4,749,268
- Issue date Jun 7, 1988
- Vivitar Corporation
- Jacob Moskovich
- G02 - OPTICS
Information Patent Grant
Projection lens
- Patent number 4,707,084
- Issue date Nov 17, 1987
- U.S. Precision Lens, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Projection lens
- Patent number 4,697,892
- Issue date Oct 6, 1987
- U.S. Precision Lens, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Objective lens system, relay lens system, and eyepiece lens system...
- Patent number 4,655,562
- Issue date Apr 7, 1987
- FJW Industries, Inc.
- Melvyn H. Kreitzer
- G02 - OPTICS
Information Patent Grant
Compact projection lens
- Patent number 4,526,442
- Issue date Jul 2, 1985
- U.S. Precision Lens, Inc.
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Zoom lens
- Patent number 4,466,708
- Issue date Aug 21, 1984
- Vivitar Corporation
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Optical sensing system for extensible tape rules
- Patent number 4,427,883
- Issue date Jan 24, 1984
- The Stanley Works
- Ellis I. Betensky
- G01 - MEASURING TESTING
Information Patent Grant
Zoom lens
- Patent number 4,394,072
- Issue date Jul 19, 1983
- Vivitar Corporation
- Ellis I. Betensky
- G02 - OPTICS
Information Patent Grant
Projection lens
- Patent number 4,348,081
- Issue date Sep 7, 1982
- U.S. Precision Lens Inc.
- Ellis I. Betensky
- G02 - OPTICS

Ellis I. Betensky

Person

Patents Grantslast 30 patents

Zoom lens with short back focal length

Method for correcting field curvature

Wide angle binocular system with variable power capability

Wide angle binocular system with variable power capability

Wide angle binocular system with variable power capability

Wide angle binocular system with variable power capability

Zoom lens having weak front lens group

Zoom lens systems

Zoom lens having weak plastic element

Wide angle binocular system with variable power capability

Zoom lens having weak front lens group

Zoom projection lens systems

Real image viewfinder requiring no field lens

Real image zoom viewfinder

Compact zoom lens with high zoom ratio

Zoom lens with short back focal length

Zoom lens

Wide-angle zoom lens

Projection lens with color correction

Wide angle projection lens

SLR zoom camera

Autofocusing zoom lens

Projection lens

Projection lens

Objective lens system, relay lens system, and eyepiece lens system...

Compact projection lens

Zoom lens

Optical sensing system for extensible tape rules

Zoom lens

Projection lens