Photocopying – Projection printing and copying cameras – Illumination systems or details
Reexamination Certificate
2007-07-17
2007-07-17
Mathews, Alan (Department: 2851)
Photocopying
Projection printing and copying cameras
Illumination systems or details
C355S077000, C430S311000
Reexamination Certificate
active
11041459
ABSTRACT:
A system and method for optimizing an illumination source to print a desired pattern of features dividing a light source into pixels and determining an optimum intensity for each pixel such that when the pixels are simultaneously illuminated, the error in a printed pattern of features is minimized. In one embodiment, pixel solutions are constrained from solutions that are bright, continuous, and smooth. In another embodiment, the light source optimization and resolution enhancement technique(s) are iteratively performed to minimize errors in a printed pattern of features.
REFERENCES:
patent: 5680588 (1997-10-01), Gortych et al.
patent: 6268908 (2001-07-01), Bula et al.
patent: 2002/0140920 (2002-10-01), Rosenbluth et al.
patent: 2004/0013950 (2004-01-01), Kang et al.
patent: 2005/0226000 (2005-10-01), Bader et al.
patent: WO 99/45558 (1999-09-01), None
patent: WO 2004/006021 (2004-01-01), None
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