NEW GRADIENT INDEX OPTICAL GLASSES FOR OPTOELECTRONIC SYSTEMS

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$49,979.00
Award Year:
1993
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
21692
Agency Tracking Number:
21692
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
207 Tremont St, Rochester, NY, 14608
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Douglas S Kindred
(716) 235-2620
Business Contact:
() -
Research Institution:
n/a
Abstract
RADIAL GRADIENT INDEX (GRIN) LENSES HAVE A REFRACTIVE INDEX PROFILE WHICH VARIES RADIALLY OUTWARD FROM THE OPTICAL AXIS. HIGH NUMERICAL APERTURE GRIN LENSES USE GLASSES CONTAINING THALLIUM OXIDE. THE REFRACTIVE INDEX GRADIENT IS PRODUCED BY ION EXCHANGE OF POTASSIUM, K +, FROM A MOLTEN SALT BATH, FOR THALLIJM, TI +, IN THE GLASS. THALLIUM IS HIGHLY TOXIC, MAKING ITS USE PROHIBITIVE IN A MANUFACTURING ENVIRONMENT IN THE UNITED STATES. OF THE SINGLE VALENT IONS, ONLY SILVER AND THALLIUM PROVIDE A LARGE ENOUGH INDEX CHANGE TO PRODUCE HIGH NUMERICAL APERTURE GRIN LENSES WHEN EXCHANGED WITH ALKALI IONS. GRADIENT LENS CORP, IS USING A SILVER CONTAINING GLASS AND EXCHANGE OF SODIUM FOR SILVER TO PRODUCE THE GRADIENT. THIS WORK ADDRESSES THE PROBLEM OF OPTIMIZING THE COMPOSITION OF A SILVER CONTAINING GLASS FOR ION EXCHANGE. THE GLASS MUST HAVE RELATIVELY HIGH IONIC MOBILITY, BE CHEMICALLY RESISTANT TO THE SALT BATH, AND PRODUCE A GOOD REFRACTIVE INDEX PROFILE TO PROVIDE HIGH QUALITY IMAGING. A SERIES OF SILVER CONTAINING GLASSES IS BEING MELTED AND THEIR CONDUCTIVITY AND CHEMICAL RESISTANCE MEASURED. ION EXCHANGE EXPERIMENTS WILLBE PERFORMED IN THE SUCCESSFUL CANDIDATE GLASSES AND THE REFRACTIVE INDEX PROFILE WILL BE MEASURED AND ANALYZED.

* information listed above is at the time of submission.

Agency Micro-sites


SBA logo

Department of Agriculture logo

Department of Commerce logo

Department of Defense logo

Department of Education logo

Department of Energy logo

Department of Health and Human Services logo

Department of Homeland Security logo

Department of Transportation logo

Enviromental Protection Agency logo

National Aeronautics and Space Administration logo

National Science Foundation logo
US Flag An Official Website of the United States Government