Optics: measuring and testing – By polarized light examination – Of surface reflection
Reexamination Certificate
2006-12-26
2006-12-26
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By polarized light examination
Of surface reflection
Reexamination Certificate
active
07154601
ABSTRACT:
The testing method for a polarizing plate includes the following two types of testing: a selected light beam passing through a filter, a polarizer, a concave lens and a filter, a mirror, a concave lens and finally to a sample of a polarizing plate; the sample is rotated along z-axis to ascertain that if there is any variation of shade in an optical domain, in order to differentiate defective samples from qualified ones. By applying the method, gooseflesh in the sample is ascertained by naked eyes easily while feeding; the checking result can be reflected to a factory owner. The test cost is low and requires only inexpensive instruments. Moreover, an additional processing of polarizing plate is needless.
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Cheng Yao-Chung
Yeh Shih-Feng
Akanbi Isiaka O.
Kamrath Alan D.
Nikolai & Mersereau , P.A.
Optimax Technology Corporation
Toatley , Jr. Gregory J.
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