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:
Feb. 28, 1984
Filed:
Feb. 18, 1982
Giuseppe Tarsia, Valley Stream, NY (US);
Berkey Photo, Inc., White Plains, NY (US);
Abstract
An adjustable lens mounting device is provided in a photographic enlarger apparatus for adjusting the pitch and roll of the lens stage to achieve optimum alignment of a lens element therein. Pitch adjustment is provided by a pair of elements having complementary convex-concave longitudinal surfaces that are connected together for rotational movement. Roll adjustment is provided by a pair of elements connected together in planar face to face alignment for pivoting about a central point. The adjustable lens mounting device incorporates a lens holder which permits rotation of a screw-coupled lens element relative to the lens stage, so that it may be selectively rotatively positioned for convenient viewing. Also provided is a rotatable turret for selectively carrying a plurality of lens elements in and out of the optical axis.