Lens specifying device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 19, 2002
Grant Date -
May 24, 2001
app pub date -
Sep 22, 1999
filing date -
Jan 22, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lens specifying apparatus comprising a light source (21) for projecting a measuring light beam on a lens (30) under examination, an area CCD (35) image receiving element for receiving the measuring light beam transmitted by the lens (30) under examination, a filter disc (64) disposed, as means for providing spectral transmittances, at a midpoint of an optical path extending from the light source (21) to the area CCD (35), and a processing circuit (37) for calculating the refractive characteristics and spectral transmittances of the lens (30) under examination on the basis of an output of the area CCD (35) and displaying the refractive characteristics and spectral transmittances on a monitor (3).
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