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. 04, 1993
Filed:
Oct. 10, 1991
Michael T MacKay, Vallejo, CA (US);
Sony Corporation of America, Park Ridge, NJ (US);
Abstract
An improved camera lens and filter adapter assembly has application for use in video and photographic cameras, and in particular, cameras using filters or special effects equipment. Camera lenses are housed in a helical mount located on the lens and filter adapter assembly and focusing of the lens will not rotate the helical mount in a radial direction. Because of this, filters and special effects devices, such as a polarizing filter or a matte box, which must remain stationary in a radial direction will not be effected during focusing. Filters and special effects devices are magnetically coupled to the lens and filter adapter assembly using magnetic rings. Magnetic coupling provides quick, easy and secure mounting of filters and special effects devices to cameras and permits a camera-person to cascade as many filters or special effects devices as needed.