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:
Jul. 30, 1985
Filed:
Jun. 11, 1980
Applicant:
Inventor:
Edwin K Shenk, Westford, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354401 ; 352 93 ; 352140 ;
Abstract
An autofocusing motion picture camera having an adjustable focus zoom lens and having means for periodically determining the distance to subjects within the focusing range of said lens is provided with an object presence sensing transducer having an acceptance angle that encompasses the optical field of view angle of said lens whenever the telephoto lens position is selected.