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. 06, 2001
Filed:
Jun. 29, 1999
Shigeru Morishita, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A mirror control apparatus,for controlling a mirror,in a single lens reflex camera,. The mirror,is supported for reciprocal rotation between a first position in a photographing light path POP and a second position out of the photographing light path POP. The mirror control apparatus,comprises a drive mechanism,and a brake mechanism,. The drive mechanism,is operatively connected to the mirror,for applying drive power to the mirror,for rotation between the first and second positions. The brake mechanism,is operatively connected to the mirror,for producing brake power which varies depending on at least one of factors affecting rotation of the mirror, the brake power serving as resistance against rotation of the mirror,. Such factors include temperature in the camera,and orientation of the camera,relative to the gravity. Appropriate brake power may be always produced against rotation of the mirror in order to effectively avoid any harmful shocks to and bounces of the mirror under different conditions of the single lens reflex camera which may occur.