System for detecting selective refractive defects in transparent articles
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 19, 1986
Grant Date -
N/A
app pub date -
Jul 27, 1984
filing date -
Jul 27, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system of illuminating a transparent glass article, such as a TV faceplate, for detecting optical defects. The source of illumination is tailored so as to be space invariant and results in producing a plurality of collimated beams which travel in a continuum of different directions. A uniformly illuminated diffuser plate with a mask has the attribute of enhancing refractive defects of a given magnitude while not detecting those of a more gradual refractive nature. The object is viewed with a linear diode array camera of a given acceptance angle.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully