发明公开
EP3039409A1 OPTICAL ALIGNMENT TOOL 有权
WERKZEUGFÜROPTISCHE AUSRICHTUNG

OPTICAL ALIGNMENT TOOL
摘要:
Provided is an inspection apparatus including: (a) a translucent or transparent plate having a bottom surface, at least a portion of the bottom surface having an opaque material printed thereon in a pattern having at least one transparent or translucent portion; and (b) a chamber disposed below the bottom surface, whereby light emitted from the chamber or through the chamber can pass through the at least one transparent or translucent portion.
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