Image analysis – Image sensing – Optical
Reexamination Certificate
2005-05-10
2005-05-10
Do, Anh Hong (Department: 2624)
Image analysis
Image sensing
Optical
C382S312000
Reexamination Certificate
active
06891980
ABSTRACT:
The method for evaluating schlieren in glassy or crystalline optical materials includes irradiating a test sample of the optical material with light and producing a shadow image of the test sample on a projection screen. The shadow image of the test sample is received in an electronic image receiving device, such as a digital camera, and is compared with another shadow image of schlieren obtained with a comparison sample by means of interferometry. Then the optical material of the test sample is evaluated with the help of the comparison results.
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Gerhard Michael
Kusch Christian
Lentes Frank-Thomas
Moersen Ewald
Singer Wolfgang
Carl Zeiss SMT AG
Do Anh Hong
Schott Glas
Striker Michael J.
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