Through substrate optical imaging device and method
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United States of America Patent
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Feb 7, 2012
Grant Date -
Jul 22, 2010
app pub date -
Oct 16, 2009
filing date -
Apr 16, 2007
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Abstract
A through-substrate optical imaging device for through-imaging of translucent work objects, includes a radiation source outputting radiation that will be transmissive through the work object and an imaging system configured for capturing inspection information from the radiation source through the work object. The radiation source is configured such that the radiation impinges on the surface of the work object under various angles of incidence. A method for through-substrate optical imaging of a translucent work object includes irradiating the translucent work object by radiation from a radiation source; capturing inspection information from the radiation source through the translucent work object, the inspection information being captured by an imaging system; and irradiating the translucent work object. The translucent work object is irradiated by radiation which impinges on the surface of the translucent work object under one of various angles of incidence and orientations.
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