Optics: measuring and testing – By alignment in lateral direction – With registration indicia
Reexamination Certificate
2007-04-24
2007-04-24
Toatley, Jr., Gregory J. (Department: 2877)
Optics: measuring and testing
By alignment in lateral direction
With registration indicia
C356S614000, C385S052000
Reexamination Certificate
active
10616521
ABSTRACT:
A passive alignment technique is disclosed to facilitate accurate positioning of components of an optical assembly. In one aspect, a method includes directing light onto components of an optical assembly in which a first component includes a first pattern of marks with a first frequency and a second component includes a second pattern of marks with a second different frequency. An optical signal corresponding to the superposition of the first and second patterns is detected. Based on the detected optical signal, a determination may be made as to whether the first and second components are properly positioned with respect to one another.
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