Exposure device

Details Exposure device Exposure device

2007-02-27

2007-02-27

Rutledge, D. (Department: 2851)

Photocopying

Projection printing and copying cameras

Illumination systems or details

C355S071000, C355S077000

Reexamination Certificate

active

11385694

ABSTRACT:
A light beam emitted from a light source passes through a spatial light modulation device, at which a plurality of unit elements for respectively modulating incident light beam are two-dimensionally arrayed, and a microlens array, at which a plurality of microlenses corresponding to the unit elements are arrayed, and is focused on an exposure surface. A four-part detector, which is structured by four diodes, is disposed on the exposure surface so as to correspond to four pixels which are present at one corner of the exposure area. Relative mispositioning between the spatial light modulation device and the microlens array generates a difference in respective detection signals of the four diodes. Thus, an offset between the spatial light modulation device and the microlenses can be detected. Positional adjustment of the microlens array is performed on the basis of a detected offset amount.

REFERENCES:
patent: 6628390 (2003-09-01), Johnson
patent: 2004/0027681 (2004-02-01), Sunagawa et al.
patent: 2005/0041229 (2005-02-01), Meisburger
patent: 2005/0063032 (2005-03-01), Igasaki et al.
patent: 2002277851 (2002-09-01), None

Affiliated with

Also associated with

Rating

Exposure device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exposure device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exposure device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3873906