06271913 is referenced by 96 patents and cites 108 patents.

Optical characteristic measuring systems and methods for determining the color or other optical characteristics of teeth comprising a probe body (

2

) wherein the probe provides light to the surface of the object/tooth (

20

). Perimeter receiver fiber optics (

102

) are spaced apart from a source fiber optic and receive light from the surface of the object/tooth (

20

) being measured. Light from the perimeter fiber optics pass to a variety of filters. The system utilizes the perimeter receiver fiber optics (

102

) to determine information regarding the height and angle of the probe with respect to the object/tooth being measured wherein the numerical apertures of the receiver fiber optics (

102

) are different.

Title
Apparatus and method for measuring optical characteristics of an object
Application Number
9/462016
Publication Number
6271913 (B1)
Application Date
December 29, 1999
Publication Date
August 7, 2001
Inventor
Alan R Loudermilk
Chicago
IL, US
Russell W Jung
Morton Grove
IL, US
Wayne D Jung
Morton Grove
IL, US
Agent
Loudermilk & Associates
US
Assignee
LJ Laboratories
IL, US
IPC
G01N 21/00
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