Linear shutter and method to achieve uniform density of image el

Details Linear shutter and method to achieve uniform density of image el Linear shutter and method to achieve uniform density of image el

1989-08-17

1991-05-28

Gellner, Michael L.

Photocopying

Projection printing and copying cameras

Stereoscopic

354115, G03B 2732

Patent

active

050198556

ABSTRACT:
A method and apparatus for achieving uniform density of image elements of a 3-D photograph by using a 3-D printer with a linear motion blade shutter which travels at varying speeds during printing a negative view to control the duration of exposure across the 3-D photograph. The scanning speed of the linear shutter is varied during the exposure of each of the 2-D negative views and is based upon the position of the 2-D negative view in relation to the field of illumination of the enlarging lens in order to compensate for the non-uniformity of illumination due to the vignetting effect.

REFERENCES:
patent: 4294544 (1981-10-01), Altschuler et al.
patent: 4852972 (1989-08-01), Wah Lo

Affiliated with

Also associated with

Rating

Linear shutter and method to achieve uniform density of image el does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear shutter and method to achieve uniform density of image el, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear shutter and method to achieve uniform density of image el will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-38342