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:
Apr. 18, 1989
Filed:
Mar. 01, 1988
Masataka Sawamura, Hachioji, JP;
Yasushi Hoshino, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
An automatic focusing apparatus for a camera wherein a distance measurement signal is stored as a digital value, pulses corresponding to a distance, which are generated upon rotational movement of a lens along an optical axis through a motor, are counted, and a stop pawl for stopping the lens is driven in accordance with the count value. A pulse width of the pulses of the pulse signal is detected, the pulses of the pulse signal are counted, and when the number of the counted pulses corresponds to the stored digital value, the stop pawl is driven after a delay time which is determined based on the detected pulse width of a pulse of the pulse signal.