Optical system, detector and method for detecting peripheral surface defect of translucent disk
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Oct 7, 2004
app pub date -
Apr 2, 2004
filing date -
Apr 3, 2003
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Defect in a edge portion of a disk is detected by irradiating a inspected region of an outer peripheral surface with light beam spot through an inside portion of the disk and receiving scattered light from the inspected region by means of a first light receiving system provided externally of the disk in a vicinity of the inspected region. Therefore, there is substantially no scattered light from alien attached externally of the disk.
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