Optics: measuring and testing – Lens or reflective image former testing – Optical center – cylinder axis – or prism measuring or...
Reexamination Certificate
2007-12-18
2007-12-18
Toatley, Jr., Gregory (Department: 2877)
Optics: measuring and testing
Lens or reflective image former testing
Optical center, cylinder axis, or prism measuring or...
C356S128000, C356S239200
Reexamination Certificate
active
11286061
ABSTRACT:
Disclosed herein is a method comprising illuminating a microstructured prism, or linear array of prisms of a prism sheet with an incident beam. The method further comprises making measurements of the refracted image of the beam on a measuring device to measure the distance disposed on an opposing side of the prism sheet from the side that the light beam is incident upon. Measurement of two angles of the refracted images of the beam on the ruled scale, measured twice, illuminating the sample at different angles are used in an equation to simultaneously provide the apex angle, the skew angle and the refractive index of the prism sheet.
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Coyle Dennis Joseph
Sze Micah Sakiestewa
Yamada Masako
Cantor & Colburn LLP
General Electric Company
Giglio Bryan J
Toatley, Jr. Gregory
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