Mirror control apparatus for mirror in single lens relex camera

摘要

A mirror control apparatus 100; 200 for controlling a mirror 20 in a single lens reflex camera 10. The mirror 20 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 100; 200 comprises a drive mechanism 102; 202 and a brake mechanism 104; 204. The drive mechanism 102; 202 is operatively connected to the mirror 20 for applying drive power to the mirror 20 for rotation between the first and second positions. The brake mechanism 104; 204 is operatively connected to the mirror 20 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 20. Such factors include temperature in the camera 10 and orientation of the camera 10 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.