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In-Sight
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1700 Series Wafer Reader Appendix E: 1701 Wafer Reader Installation Options
117
Image Artifacts
Under certain conditions, horizontal lines may be observed in the image (Figure E-0-4).
These lines are artifacts of the reader’s optical design. They are most visible at a working
distance of approximately 30 mm, when the Light Mode setting is Dark Field (for more
information of Light Modes, see Section 3.4.9). In most cases, these lines will have no
impact on reading performance. If desired, position the mark in an area of the field of
view that is free of artifacts. To reduce the intensity of the lines, the lighting can be
optimized using the automated tuning process (Section 3.4.15).
Figure E-0-4: Image Artifact Example