Mirror control apparatus for mirror in single lens relex camera

A mirror control apparatus for a mirror in a single lens reflex camera, said mirror being supported for reciprocal rotation between a first position in a photographing light path and a second position out of said photographing light path, comprising:

• a drive mechanism operatively connected to said mirror for applying drive power to said mirror for rotation between said first and second positions;
• a brake mechanism operatively connected to said mirror for producing brake power serving as resistance against rotation of said mirror;
• and
• said brake mechanism comprising an induction brake unit and control circuitry associated with said induction brake unit, said control circuitry comprising:
• an angular position sensor for detecting an angular position of said mirror relative to said camera and providing an angular position signal indicative of the detected angular position of said mirror;
• and
• a brake unit controller responding to said angular position signal by controlling said induction brake unit so as to control brake power to be produced by said induction brake unit.

A mirror control apparatus for a mirror in a single lens reflex camera, said mirror being supported for reciprocal rotation between a first position in a photographing light path and a second position out of said photographing light path, comprising:

• a drive mechanism operatively connected to said mirror for applying drive power to said mirror for rotation between said first and second positions;
• a brake mechanism operatively connected to said mirror for producing brake power serving as resistance against rotation of said mirror;
• and
• said brake mechanism comprising an induction brake unit and control circuitry associated with said induction brake unit, said control circuitry comprising:
• an angular position sensor for detecting an angular position of said mirror relative to said camera and providing an angular position signal indicative of the detected angular position of said mirror;
• a temperature sensor for detecting a temperature in said camera and providing a temperature signal indicative of the detected temperature in said camera;
• and
• a brake unit controller responding to said angular position signal and to said temperature signal by controlling said induction brake unit so as to control brake power to be produced by said induction brake unit.

A mirror control apparatus for a mirror in a single lens reflex camera, said mirror being supported for reciprocal rotation between a first position in a photographing light path and a second position out of said photographing light path, comprising:

• a drive mechanism operatively connected to said mirror for applying drive power to said mirror for rotation between said first and second positions;
• a brake mechanism operatively connected to said mirror for producing brake power serving as resistance against rotation of said mirror;
• and
• said brake mechanism comprising an induction brake unit and control circuitry associated with said induction brake unit, said control circuitry comprising:
• an angular position sensor for detecting an angular position of said mirror relative to said camera and providing an angular position signal indicative of the detected angular position of said mirror;
• an orientation sensor for detecting an orientation of said camera relative to gravity and providing an orientation signal indicative of the detected orientation of said camera;
• and
• a brake unit controller responding to said angular position signal and to said orientation signal by controlling said induction brake unit so as to control brake power to be produced by said induction brake unit.

A mirror control apparatus for a mirror in a single lens reflex camera, said mirror being supported for reciprocal rotation between a first position in a photographing light path and a second position out of said photographing light path, comprising:

• a drive mechanism operatively connected to said mirror for applying drive power to said mirror for rotation between said first and second positions;
• a brake mechanism operatively connected to said mirror for producing brake power serving as resistance against rotation of said mirror;
• and
• said brake mechanism comprising an induction brake unit and control circuitry associated with said induction brake unit, said control circuitry comprising:
• an angular position sensor for detecting an angular position of said mirror relative to said camera and providing an angular position signal indicative of the detected angular position of said mirror;
• a temperature sensor for detecting a temperature in said camera and providing a temperature signal indicative of the detected temperature in said camera;
• an orientation sensor for detecting orientation of said camera relative to gravity and providing an orientation signal indicative of the detected orientation of said camera;
• and
• a brake unit controller responding to said angular position signal, said temperature signal and said orientation signal by controlling said induction brake unit so as to control brake power to be produced by said induction brake unit.