Abstract:
An endoscope system includes an endoscope and a processor. The endoscope includes: an actuator including a coil configured to cause a movable lens and a magnet to move by application of a drive signal; a position sensor configured to output a position detection signal showing a position of the movable lens according to a magnetic flux of the magnet; and an endoscope memory storing correction information for correcting crosstalk onto the position detection signal by the magnetic flux of the coil. The processor includes a drive controller configured to correct the position detection signal based on the drive signal and the correction information and output the drive signal based on a target position and the corrected position detection signal, to the actuator.
Abstract:
An endoscope system includes an endoscope having a position/angle sensor and an amplifying circuit, a memory configured to store output error sensitivity data and a first wiring resistance value, and a processor including a signal processing circuit configured to process an output signal from the amplifying circuit. The signal processing circuit corrects an error of the output signal based on a value obtained by multiplying a difference between the first wiring resistance value and a processor wiring resistance value by the output error sensitivity data.
Abstract:
The invention disclosed herein provides a small-format image-shake correction apparatus and an imaging apparatus incorporating the same. The moving member control apparatus is comprising a base part 10, a moving part 30 that is movable relatively to the base part 10, a first driving part 71 that applies an driving force to the moving part 30, a second driving part 72 that applies an driving force to the moving part 30, a third driving part 73 that applies an driving force to the moving part 30 from a position different from the first 71 and the second driving part 72, a control part 2 that gains control of the driving forces of the first 71, the second 72 and the third driving part 73, and a correction part 3 that makes correction of a first output value Ix1 produced from the control part 2 to the first driving part 71 and a second output value Ix2 produced from the control part 2 to the second driving part 72, depending on a third output value Iy produced from the control part 2 to the third driving part 73, as shown in FIG. 12.
Abstract:
The moving member control apparatus of the invention is characterized by comprising a base part 10, a moving part 30 capable of moving relatively with respect to the base part 10, a first driving portion 71 that applies driving force to the moving part 30, a second driving portion 72 that applies driving force to the moving part 30, a first instruction portion that gives an instruction to the first driving portion 71 about a displacement position or where to move, a second instruction portion that gives an instruction to the second driving portion 72 about a displacement position, a first position acquisition portion 34a that acquires a real position of the first driving portion 71, a second position acquisition portion 34b that acquires a real position of the second driving portion 72, a first deviation calculation portion that calculates a first deviation eX1 between a position rX1 instructed by the first instruction portion and a real position X1pos acquired by the first position acquisition portion 34a, a second deviation calculation portion that calculates a second deviation eX2 between a position instructed by the second instruction portion and a real position X2pos acquired by the second position acquisition portion 34b, a correction portion 2 that products a first correction signal rX1 and a second correction signal rX2 corrected for the first deviation and the second deviation, respectively, depending on a difference between the first deviation and the second deviation, and a control portion 3 that receives the first correction signal rX1 and the second correction signal rX2 to control driving the forces of the first driving portion and the second driving portion, respectively.
Abstract:
A camera shake correction apparatus includes a target position setting unit, a current setting unit, a driving unit, a magnetic flux detector, and an arithmetic unit. The target position setting unit sets a target position of a movable member. The current setting unit sets a current value to move the movable member to the target position. The driving unit drives the movable member with respect to a fixed member based on the set current set value, The magnetic flux detector detects a magnetic flux value changed with movement of the movable member. The arithmetic unit calculates a third magnetic flux value by subtracting a second magnetic flux value estimated to be generated from the driving unit based on the current set value from a first magnetic flux value actually detected by the magnetic flux detector.
Abstract:
The invention provides a position detection apparatus comprising: a base part, a moving part movable relatively with respect to the base part, a position detection part that detects a position of the moving part relative to the base part on the basis of a magnetic flux change to produce position data, a temperature detection part that detects an ambient temperature, a position correction part that calculates a correction value on the basis of a difference between the position data and a given reference value and the ambient temperature, and corrects the position data on the basis of the calculated correction value to produce a first corrected position data, and a linearity correction part that corrects the first corrected position data on the basis of the correction value for nonlinearity of the position detection part to produce a second corrected position data, wherein: the position detection part is capable of detecting position value as far as a position area where, within a position range of relative movement of the moving part to the base part, the magnetic flux change in association with a change in an amount of the relative movement is nonlinear.
Abstract:
The invention disclosed herein provides a small-format image-shake correction apparatus and an imaging apparatus incorporating the same. The moving member control apparatus is comprising a base part 10, a moving part 30 that is movable relatively to the base part 10, a first driving part 71 that applies an driving force to the moving part 30, a second driving part 72 that applies an driving force to the moving part 30, a third driving part 73 that applies an driving force to the moving part 30 from a position different from the first 71 and the second driving part 72, a control part 2 that gains control of the driving forces of the first 71, the second 72 and the third driving part 73, and a correction part 3 that makes correction of a first output value Ix1 produced from the control part 2 to the first driving part 71 and a second output value Ix2 produced from the control part 2 to the second driving part 72, depending on a third output value Iy produced from the control part 2 to the third driving part 73, as shown in FIG. 12.