Method for adjusting a projection objective

Photocopying – Projection printing and copying cameras – Focus or magnification control

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C355S052000, C355S053000

Reexamination Certificate

active

07965377

ABSTRACT:
A projection objective having a number of adjustable optical elements is optimized with respect to a number of aberrations by specifying a set of parameters describing imaging properties of the objective, each parameter in the set having an absolute value at each of a plurality of field points in an image plane of the projection objective. At least one of the optical elements is adjusted such that for each of the parameters in the set, the field maximum of its absolute value is minimized.

REFERENCES:
patent: 4920505 (1990-04-01), Suzuki
patent: 5973863 (1999-10-01), Hatasawa et al.
patent: 6879381 (2005-04-01), Kenmoku
patent: 6961115 (2005-11-01), Hamatani et al.
patent: 7075651 (2006-07-01), Tsukakoshi
patent: 7405803 (2008-07-01), Shimizu et al.
patent: 2002/0001088 (2002-01-01), Wegmann et al.
patent: 2004/0042094 (2004-03-01), Matsuyama
patent: 1 231 516 (2002-08-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for adjusting a projection objective does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for adjusting a projection objective, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for adjusting a projection objective will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2652590

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.