Imaging device for a bonding apparatus
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United States of America Patent
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Issued Date -
Mar 18, 2010
app pub date -
Sep 17, 2008
filing date -
Sep 17, 2008
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An imaging device for a bonding apparatus including a prism frame, a lens frame and an imaging device frame all made of metallic materials and fixed separately to flat plates made of carbon fiber reinforced plastic so as to be in this order in the optical axis direction of the imaging device. Light shielding plates are fixed to the lens frame to extend toward both ends of the imaging device to form overlapped portions where the thermal expansion is absorbed. The flat plates have a thermal expansion amount of approximately zero to not allow the positions in the optical axis direction of the optical components and the optical characteristics to change even under thermal influence, and thermal expansion is absorbed by the overlapped portions, causing no thermal stress in the imaging device.
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