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:
Jan. 23, 1996
Filed:
Mar. 21, 1994
Mikhail Vaynshteyn, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A variable angle flash for a photographic camera has a flash tube and a reflector that are relatively movable along an optical axis. A linear motor in the camera drives a follower connected with one of the flash tube and reflector members for moving the flash tube (or reflector) along the axis to vary the illumination angle of the flash. Optionally, the motor is a linear form of ultrasonic wave motor of which the follower forms a movable portion. An elastic body engaging the follower and fixed to the camera case carries piezoelectric elements that undulate the body when subjected to ultrasonic alternating currents, causing the body to move the follower and drive the flash tube (or reflector) along the optical axis and thereby vary the illumination angle.