Photocopying – Projection printing and copying cameras – Illumination systems or details
Reexamination Certificate
2006-03-01
2009-06-30
Nguyen, Hung Henry (Department: 2851)
Photocopying
Projection printing and copying cameras
Illumination systems or details
C355S053000
Reexamination Certificate
active
07554649
ABSTRACT:
There is provided a projection optical system for projecting a pattern on an object surface onto an image surface in a reduced size. The projection optical system includes six reflective surfaces that includes, in order of reflecting light from the object surface, a first reflective surface, a second convex reflective surface, a third convex reflective surface, a fourth reflective surface, a fifth reflective surface and a sixth reflective surface, and an aperture stop along an optical path between the first and second reflective surfaces.
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Canon Kabushiki Kaisha
Nguyen Hung Henry
Rossi Kimms & McDowell LLP
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