The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 1984
Filed:
Feb. 05, 1982
Warren E Schroeder, Hackensack, NJ (US);
Other;
Abstract
An improved optical composing stage is disclosed which has a variable-area aperture including a plurality of aperture-defining blades which are angled at their leading edges so that light incident thereon from a light source is directed out of the field of view of a recording medium, whereby image flaring due to edge reflection is prevented. The optical composing stage further comprises a composite structure made up of parallel plates. Convenient horizontal angular alignment adjustment of the plates is obtained in that a locating pin on a lower plate extends upward into a locating groove formed in the underside of a rotatable skew adjustment knob. The stage further includes a plurality of spaced object planes which provide for simultaneous imaging of a plurality of negatives, each separately controllable as to whether it is in focus or out of focus.