JP3394666B2 - Image stabilizer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case where when an optical device such as a monocular, a binocular, and a video camera is vibrated, an emission angle of a light beam from an observation object with respect to an optical axis of the optical device varies. The present invention relates to an image stabilizing device arranged in an optical device for preventing an optical image from being observed in a blurred state.

[0002]

2. Description of the Related Art When holding and operating an optical device for optical observation such as monoculars and binoculars by hand, especially when the optical device is brought into an aircraft or a vehicle. In the case of use, vibrations and vibrations of an aircraft, a vehicle, etc. are transmitted to an optical device, and the emission angle of a light beam from an observation object with respect to the optical axis varies, often deteriorating an observed optical image. Vibration transmitted to such optical devices
Is suitable for monoculars and binoculars, even if its amplitude is small.
In view of the fact that the field of view is narrow and the observation object is magnified
Therefore, the variation angle with respect to the optical axis is also enlarged. It
Therefore, even when swinging with a relatively small angular fluctuation speed,
The observed object moves rapidly in the field of view or the angle of change is large.
When it is hard, there is the inconvenience of being out of sight.
Jijiru Also, when swinging with a relatively large angular fluctuation speed,
Observe only the magnification of the optical device even if the fluctuation angle is relatively small
Observed as the angular velocity of the image of the object increases
Then, there arises a disadvantage that the image is blurred and deteriorates.

Until now, various devices have been proposed for stabilizing an image in order to prevent the observed image from deteriorating due to the variation of the emission angle of the light beam with respect to the optical axis due to the vibration or the oscillation transmitted to the optical device. Has been done. For example, Japanese Patent Publication No. 57-37852 discloses a device in which a vibration isolating means utilizing a rotary inertia body (gyromotor) is provided in the binoculars in order to correct the blurring of an observed image in the binoculars.

That is, in this technique, an erecting prism is arranged on the optical axis between the objective lens and the eyepiece of the binoculars, and this erecting prism is fixedly mounted on the gimbal suspension means to which the rotary inertia body is attached. Even when the binoculars vibrate due to camera shake or the like, the erecting prism is held in substantially the same posture to prevent the observation image of the binoculars from being blurred. like this,
The conventional technology, which uses the rotating inertial body and the gimbal suspension means, can stabilize the image with high accuracy, while it requires a large space in a small space.
A high speed rotating body is required to obtain inertial force
Because it is necessary to reduce the vibration generated by the body itself
It needs to be highly accurate. This small size, high speed, high precision
The problem with the demand is the price, life, and power on
From the time required to obtain the required inertial force
Is. In addition, as the magnification and resolution of binoculars are increased,
Therefore, if the effective diameter of the objective lens is increased, the erecting prism becomes
The size is increased, and a large inertial force is required accordingly,
In addition to increasing the problem of power consumption,
It grows with it.

Therefore, the applicant of the present application mounts an angular velocity sensor on the gimbal suspension means instead of the rotary inertia body, and controls the rotational position of the gimbal suspension means based on the output value from the angular velocity sensor to erect. An image stabilizer for fixing the attitude of the prism with respect to the earth (inertial system) has been proposed (JP-A-6-250100). According to this device,
The erecting prism, which is basically held by the gimbal suspension means,
It has inertial force, especially high vibration speed and high vibration frequency.
For large vibrations,
High posture retention ability. Therefore, from the angular velocity sensor
The control force for the rotational position based on the output may be small. Only
However, other image safety that drives the vari-angle prism and lens
Stabilizer requires a positive drive and high frequency
In order to correct a large amplitude with vibration, the drive unit
Since it needs to be moved with, it can be corrected in a large angle range.
Is difficult.

[0006] Thus the image stabilizer of the type which controls based on rotational position of the output value from the angular velocity sensor mounted on said gimbal suspension means of the gimbal suspension means (hereinafter "the angular velocity sensor mounted type image stabilization Device)), since the gimbal suspension means is housed in the case of the optical device, the following problems occur.

That is, the gimbal suspension means has its posture electrically controlled, and the driving power is supplied to the elements such as the angular velocity sensor and the actuator means constituting the control system mounted on the gimbal suspension means. Need to supply. Since this drive power is supplied from an external power source using a wire rod, each time the gimbal suspension means is driven to rotate, the wire rod is bent or rubbed against each part in the case, which may cause damage. There is also a risk of injury or disconnection. Although this problem can be solved to some extent by using a slip ring or a flexible spiral cord as a means for supplying the electric power, all of these members are expensive and the manufacturing cost of the device cannot be reduced.

The present invention has been made in view of the above circumstances, and when an angular velocity sensor mounted image stabilizing device is adopted, electric power is externally supplied to an electric element mounted on the gimbal suspension means, or It is an object of the present invention to provide an image stabilizing device which can reduce damage to a wire for sending a detection signal from an electric element to the outside and which is inexpensive to manufacture.

[0009]

An image stabilizing device of the present invention has a monocular optical system or a binocular optical system in which an erecting prism is arranged between an objective lens and an eyepiece lens, and the objective lens of these optical systems is provided. And an image stabilizing device mounted on an optical device having an eyepiece fixed in a case,
A gimbal suspension means having two pivots extending in the left-right direction and the up-down direction of the optical device and rotatably mounting the erecting prism on the case, and the gimbal suspension means comprising the two rotation shafts. An actuator for rotating around a moving shaft, two angular position information detecting means for respectively detecting angular positions of the gimbal suspension means around the two rotating shafts, and a gimbal suspension means. Based on the information detected by the two angular velocity information detecting means that respectively detect the angular velocity information of the gimbal suspension means that is provided due to the attitude change of the optical device, and the information detected by the angular position information detecting means and the angular velocity information detecting means. said erecting prism to drive the actuator to secure to the inertial system, two feedback control means for controlling the rotation about the rotation axis of said gimbal suspension means Wherein the gimbal suspension means includes an inner gimbal suspension member that fixedly supports the upright prism, an outer gimbal suspension member surrounding the inner gimbal suspension member, and the inner gimbal suspension member on the outer gimbal suspension member. A first bearing that rotatably supports and a second bearing that rotatably supports the outer gimbal suspension member on the case, wherein the actuator includes the inner gimbal suspension member rotation actuator; An outer gimbal suspension member rotating actuator, and at least one of these two actuators is composed of a rotor member and a stator member arranged on the rotating shaft of the rotating gimbal suspension member. Has a through hole in the vicinity of the rotating shaft, and The wire member from the electric member on the gimbal suspension means is drawn out to the outside.

It is possible to use one of the rotor member and the stator member as a coil member and the other as a magnet member.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 3 and 4 are a plan sectional view, a front sectional view, a side sectional view and a perspective view, respectively, showing a state in which an image stabilizing device according to an embodiment of the present invention is incorporated in binoculars. As shown in the figure, the binoculars in which the image stabilizing device 20 of the present embodiment is incorporated in a case 30 have a pair of objective lens systems 1a and 1b, a pair of eyepiece lens systems 2a and 2b, and a pair of erecting lenses. Objective lens 1 equipped with prisms 3a and 3b
a, the eyepiece 2a, and the erecting prism 3a are the first telescope system 10a.
The objective lens 1b, the eyepiece 2b, and the erecting prism 3b similarly constitute a second telescope system 10b.
The second pair of telescope systems 10a and 10b constitutes a binocular system.

The pair of objective lens systems 1a and 1b and the eyepiece lens systems 2a and 2b constituting this binocular system are fixed to the case 30 of the present optical device, and the erecting prisms 3a and 3b are arranged in the vertical direction of the device ( Direction of optical axis extension and objective lens system 1a, 1
a rotation axis 6 extending in a direction orthogonal to the arrangement direction of b) and in the left-right direction of the apparatus (direction of arrangement of the objective lens systems 1a and 1b),
Gimbal suspension member 107 having 106 (see FIG. 5)
It is rotatably attached to the case 30 via the.

The basic functions that are the premise of the apparatus of this embodiment will be described below with reference to FIGS. In the present specification, the vertical direction of the device indicates the direction of arrow A in the figure,
The left-right direction of the device indicates the direction of arrow C in the figure. In FIG. 5, the gimbal suspension members 7, 107 to which the erecting prisms 3a, 3b are attached are fixed to the case 30, and thus the erecting prisms 3a, 7a attached to the gimbal suspension members 7, 107, In the state where 3b is fixed to the case 30, this optical device has a normal binocular system configuration, and the optical axes 4a and 4b of the respective telescope optical systems 10a and 10b at this time are called the optical axes of this optical device. I will.

It should be noted that the proper positions of the objective lens systems 1a and 1b, the eyepiece lens systems 2a and 2b, the erecting prisms 3a and 3b, the gimbal suspension members 7 and 107, and the rotating shafts 6 and 106 are known. Since it is described in detail in the literature (for example, Japanese Patent Publication No. 57-37852), it is omitted here.

As shown in FIG. 5, in the apparatus of this embodiment, the inner gimbal suspension member 107 is an outer gimbal suspension member 7.
The gimbal suspension has a double structure inside and outside. The outer gimbal suspension member 7 is rotated by a rotary shaft 6 extending in the left-right direction of the apparatus so as to correct vertical image blur, while the inner gimbal suspension member 10 is rotated.
Reference numeral 7 is rotated by a rotating shaft 106 extending in the vertical direction of the apparatus so as to correct image blur in the horizontal direction. Upright prism 3a,
3b is mounted on the inner gimbal suspension member 107. Note that, in FIG. 5, for convenience of description, the upper and lower relationships are shown to be opposite to those in FIGS.

An angular velocity sensor 8 is fixedly mounted on the central portion of the upper side wall of the outer gimbal suspension member 7, while an angular velocity sensor 108 is mounted on the central portion of the front side wall of the inner gimbal suspension member 107. Is fixed. The angular velocity sensor 8 is a sensor that detects the rotational angular velocity ω ₁ when the outer gimbal suspension member 7 rotates in the direction of the arrow B as the case 30 moves in the vertical direction. Reference numeral 108 denotes a sensor that detects the rotational angular velocity ω ₂ when the inner gimbal suspension member 107 rotates in the direction of arrow D due to the lateral movement of the case 30.

A position sensor 9 for detecting the rotation angle θ ₁ of the rotating shaft 6 is attached to _{one end} of the rotating shaft 6 for performing position feedback control in addition to the speed feedback control based on the detected angular velocity. At the other end of the rotating shaft 6, the erecting prisms 3a and 3b are always returned to the initial posture with respect to the shake of the case 30 based on the detection values from the angular velocity sensor 8 and the position sensor 9. A rotary drive motor (torquer) 5 for rotating the rotary shaft 6 of the gimbal suspension member 7 is attached. On the other hand, at one end of the rotating shaft 106, a position sensor 109 for detecting the rotation angle θ ₂ of the rotating shaft 106 is attached in order to perform position feedback control in addition to the speed feedback control based on the detected angular velocity. Rotation axis
At the other end of 106, based on the detection values from the angular velocity sensor 108 and the position sensor 109, the erecting prism 3
Rotating shaft 10 of inner gimbal suspension member 107 so that a and 3b are always returned to the initial posture with respect to the lateral shake of case 30.
A rotary drive motor (ToruCa) 105 for rotating 6 is attached.

Next, the basic concept of the control loop of the apparatus of this embodiment will be described with reference to FIG. As shown in the figure, this device has amplifiers 11a and 11a for amplifying the angular velocity signal from the angular velocity sensor 8 and the angular signal from the position sensor 9, respectively.
b, a CPU 12 that calculates the drive amount of the rotary drive motor 5 so as to return the erecting prisms 3a and 3b to their original postures based on these angular velocity signals and angle signals, and outputs a control signal based on this calculation; A motor drive circuit 13 for driving the rotary drive motor 5 by amplifying the control signal from the CPU 12 is provided. On the other hand, the detection signals from the angular velocity sensor 108 and the position sensor 109 are similar to the detection signals from the angular velocity sensor 8 and the position sensor 9 shown in FIG.
It is converted into a control signal by a control loop similar to the control loop shown in (1), and the rotation drive motor 105 is driven by this control signal.

Therefore, in the apparatus of this embodiment, two sets of control loops are required to return the two outer and inner gimbal suspension members 7 and 107 to their original postures, but a common CPU 12 may be used. .

As the erecting prisms 3a and 3b, Schmidt erecting prisms, Abbe erecting prisms, Bauern Fend erecting prisms, Polo erecting prisms, and There is a Dach erecting prism, etc., among which the Schmidt erecting prism is shown in FIG. As shown in the figure, the Schmidt erecting prism is composed of a prism 23 and a prism 24, and a part 25 of the prism 24 is a roof reflection surface. In such an erecting prism, as shown in the figure, there is a position of the incident optical axis where the incident optical axis 21 and the outgoing optical axis 22 can be taken on the same straight line. As shown in FIG. 7, in the erecting prism in which the incident optical axis 21 and the outgoing optical axis 22 can be taken on the same straight line, as shown in FIG.
The ray 21 'parallel to 1 has a property that after passing through the erecting prism, it becomes a ray 22' parallel to the optical axis 22 which is apart from the exit optical axis 22 by h. In addition,
With an erecting prism, the incident and exit optical axes are on the same straight line
Other prisms can be used as well as the above.

The angular velocity sensors 8 and 108 are composed of a columnar vibrator such as a columnar cylinder and a plurality of piezoelectric ceramics.
A piezoelectric vibrating gyro sensor utilizing the Coriolis force, wherein at least two detecting piezoelectric ceramics and at least one returning piezoelectric ceramic are provided on the side surface of a columnar vibrator. Each detection piezoelectric ceramic outputs a detection signal having a different value according to vibration, and the angular velocity is obtained by calculating the difference between them. The feedback piezoelectric ceramic is used for phase correction of the detection signal.

Since the angular velocity sensors 8 and 108 have a simple structure and a very small size, the image stabilizing device 20 itself can have a simple structure and a small size. Further, since the S / N ratio is high and the accuracy is high, the angular velocity control can be performed with high accuracy. As shown in FIG. 2, the outer gimbal suspension member 7 is rotatably supported at the left and right ends of the case 30 by bearings 71 and 72, while the inner gimbal suspension member 107 is Bearings 171,17 at both upper and lower ends
It is rotatably supported by the gimbal suspension member 7 via 2.

A rotary drive motor (torquer) 5 for rotating the gimbal suspension member 7 is provided near the right end of the gimbal suspension member 7. This rotary drive motor 5
A plurality of coils 54 dispersedly arranged on the left side circumference of the plate 53 fixed to the case 30, and an annular magnet 56 attached to the right side surface of the plate 55 screwed to the right end of the gimbal suspension member 7. And are arranged close to each other. The magnet 56 is provided so as to be located in the space on the inner peripheral side of the bearing 71. For this reason,
The bearing 71 has a larger diameter than the bearing 72 located at the left end of the gimbal suspension member 7.

On the other hand, a rotary drive motor (torquer) 105 for rotating the gimbal suspension member 107 is provided near the upper end of the gimbal suspension member 107. This rotary drive motor 105 includes a plurality of coils 154 dispersedly arranged on the lower surface circumference of a plate 153 fixed to the gimbal suspension member 7.
And an annular magnet 15 mounted on the upper surface of a plate 155 screwed to the upper end of the gimbal suspension member 107.
6 and 6 are arranged close to each other. Above magnet
156 is provided so as to be located in the space on the inner peripheral side of the bearing 171. The bearing 172 located at the lower end of the gimbal suspension member 107 is
The diameter is larger than 1, and the position sensor 109 is attached to the space on the inner peripheral side.

As described above in detail, in the present embodiment, the gimbal suspension members 7 and 107 which constitute the image stabilizing device 20.
Two rotary drive motors (ToruCa) 5,1 for rotating each
Reference numeral 05 denotes magnets 56 and 156 arranged in the space on the inner peripheral side of bearings 71 and 171 for rotatably supporting the gimbal suspension member 7 and 107, and coils 54 and 154 arranged close to and facing the magnets 56 and 156. Since it is provided, the space for the magnets 56, 156 that occupy a large proportion of the space in the rotary drive motors 5, 105 can be minimized. This allows the case 30 of the binoculars on which the image stabilizing device 20 is mounted to be made compact.

By the way, the drive power of the rotary drive motors (torquers) 5 and 105 described above is supplied from an external power source (not shown) through a wire rod. In this embodiment, the coils 54,1
54 is the stator, and the outer gimbal suspension member 7
The coil 54 of the rotary drive motor (ToruCa) 5 that drives the motor is fixed to the case 30.
The arrangement of the wire for supplying electric power to the coil does not matter, but since the coil 154 of the rotary drive motor (Toruca) 105 that drives the inner gimbal suspension member 107 rotates vertically with the outer gimbal suspension member 7, this coil The placement of the wire that supplies power to the 154 becomes a problem. In other words, since generally used wire rods are not flexible, as the coil 154 rotates, the wire rod portion with a margin is pulled or pushed back and rubs against each part of the inner wall of the case 30. , Will be damaged over time, and there is a risk of disconnection.

Therefore, in the present embodiment, the wire rod 83 drawn out from the coil 154 of the rotary drive motor (torquer) 105 for rotating the inner gimbal suspension member 107 is replaced by the outer gimbal suspension member 7 as shown in FIG. The central part of the plate 55 and the magnet 56 of the rotary drive motor (ToruCa) 5 for rotating the outer gimbal suspension member 7 attached to the right end portion by wiring the outer wall portion to the right end portion thereof. Through hole, through hole in the center of coil 54
The gimbal suspension device 70 is pulled out through the central through hole of the plate 82 and the plate 53, and is then wired to an external power source (not shown).

Thus, the inner gimbal suspension member 107
The wire rod 83 drawn out from the coil 154 of the rotary drive motor (Toruca) 105 is a center of the coil 54 of the rotary drive motor (Toruca) 5 that rotates the outer gimbal suspension member 7 and is located on the motor rotation axis. Since it is designed to be connected to an external power source through the through hole 82, there is no movement such that the gimbal suspension members 7 and 107 are pulled or pushed back by the rotating motion of both gimbal suspension members, and this wire 83 is used for the case 3
0 There is no chance of being rubbed against the inner wall and damaged.

FIG. 8 is a view showing a state in which the wire rod 83 is pulled out from the central portion of the rotary drive motor (torquer) 5. That is, the coil 54 is arranged in the inner space of the bearing 71, the plate 84 for holding the wire rod is arranged on the inner side of the central through hole 82 of the coil 54, and the two plates formed in the central portion of the plate 84 are provided. Wire rod through through holes 82a and 82b
83a, 83b (83) is pulled out. It should be noted that the screw 81 for fixing the magnet is provided close to the two through holes 82a and 82b.
a, 81b are arranged.

The angular velocity sensors 8,108 and the position sensors 9,108 mounted on the gimbal suspension members 7,107 are also provided.
Like the wire rod 83, a wire rod for supplying drive power to other electric drive elements such as 109 and a wire rod for sending output signals from these elements to the outside of the rotary drive motor (ToruCa) 5 are used. It is also possible to draw out to the outside through the central through hole 82 of the coil 54. In this case, these wires are rotated at the central part of the coil 154 of the rotary drive motor 105 for rotating the inner gimbal suspension member 107. It is also useful to configure the through holes.

Further, as shown in detail in FIG. 9, the outer gimbal suspension member 7 is composed of a pair of gimbal halves 7A, 7B which are divided into two parts in the front and rear. Each of these gimbal halves 7A and 7B consists of a rectangular frame 7Aa and 7Ba
It is composed of a pair of upper and lower bearing sandwiching portions 7Ab, 7Bb formed in the central portion of 7Aa, 7Ba, and bearing fitting portions 7Ac, 7Bc formed on the left and right ends of the frame 7Aa, 7Ba.
And, the split surface 7A of these pair of gimbal halves 7A, 7B
Bearings 7Ac, 7B with their bearing fittings
The gimbal suspension member 7 is assembled by fitting the bearings 71 and 72 into c.
At the time of this assembly, the bearing holding portions 7Ab and 7Bb formed in a substantially arc shape sandwich the bearings 171 and 172 and the plate 153, which are fitted in the upper and lower end portions of the inner gimbal suspension member 107, from the front and back to hold them. It is like this.

As described above in detail, in the present embodiment, the gimbal suspension members 7 and 107 which constitute the image stabilizing device 20.
The outer gimbal suspension member 7 comprises a pair of gimbal halves 7A, 7B assembled so as to sandwich bearings 171, 172 for rotatably supporting the inner gimbal suspension member 107 on the gimbal suspension member 7, and the gimbal halves 7A, 7B. Attaching is performed by fitting bearings 71, 72 that rotatably support the outer gimbal suspension member 7 to the case 30 to the left and right ends of the pair of gimbal halves 7A, 7B. The gimbal suspension member 107 can be incorporated inside the gimbal suspension member 7 and the gimbal suspension member 7 itself can be assembled without using any new fastening means. That is, it is possible to assemble the gimbal suspension means rotatable about the two rotation axes only by the members constituting the gimbal suspension means.

Therefore, according to the present embodiment, when the image stabilizing device equipped with the speed sensor is adopted, the gimbal suspension means can have a simple structure and can be easily assembled. Wiring of the wire rod 83 can be facilitated.

The image stabilizing device of the present invention is not limited to that of the above embodiment, and various other modes can be modified. For example, as the angular velocity information detecting means, a cylindrical vibrator can be used. In addition to the piezoelectric vibration gyro sensor of the type, it is possible to use the piezoelectric vibration gyro sensor using various types of vibrators such as the triangular prism vibrator type, the quadrangular prism vibrator type, and the tuning fork vibrator type. , Various other angular velocity sensors can be used.

As the angular position information detecting means, various angle sensors such as resolver, synchro, rotary encoder and the like can be used instead of the position sensor. Further, although the apparatus of the above embodiment is configured to be applied to binoculars, the image stabilizing apparatus of the present invention may be configured to be applicable to monoculars. Also, the same effect can be obtained by mounting the camera on a camera such as a video camera.

[0036]

According to the present invention, at least the outer gimbal suspension member is selected from the two actuators that respectively rotate the inner gimbal suspension member and the outer gimbal suspension member when the image stabilizing device equipped with the angular velocity sensor is adopted. An actuator for rotating is composed of a rotor member and a stator member arranged on a rotating shaft of a rotating gimbal suspension member, and the gimbal is passed through a through hole provided in the vicinity of the rotating shaft of the rotor member. The wire rod from the electric member on the suspension member is pulled out to the outside. This prevents the wire from being pulled or pushed back each time the gimbal suspension member is driven to rotate, so that the wire can be bent without using expensive members such as slip rings and flexible spiral cords. Also, it is possible to prevent damage from being rubbed against each other in the case.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing binoculars including an image stabilization device according to an embodiment of the present invention.

FIG. 2 is a front sectional view showing binoculars including an image stabilizing device according to an embodiment of the present invention.

FIG. 3 is a side sectional view showing binoculars including an image stabilizing device according to an embodiment of the present invention.

FIG. 4 is a perspective view showing binoculars including an image stabilizing device according to an embodiment of the present invention.

FIG. 5 is a schematic perspective view of an apparatus for explaining a basic function of an image stabilizing apparatus according to an embodiment of the present invention.

FIG. 6 is a block diagram for explaining the basic functions of the image stabilizing device according to the embodiment of the present invention.

FIG. 7 is a side view for explaining the erecting prism shown in FIG.

FIG. 8 is an external view of the rotation drive motor portion of the outer gimbal suspension member shown in FIG. 1, as viewed from the outside.

FIG. 9 is a perspective view showing the outer gimbal suspension member shown in FIG. 1 in detail.

[Explanation of symbols]

1a, 1b Objective lens (objective lens system) 2a, 2b Eyepiece (eyepiece system) 3a, 3b Upright prism 4a, 4b Optical axis 5 Rotation drive motor (ToruCa) (Outer gimbal suspension member rotation actuator) 105 Rotation drive Motor (ToruCa) (Inna gimbal suspension member rotating actuator) 6,106 Rotating shaft 7 Gimbal suspension member (Outer gimbal suspension member) 107 Gimbal suspension member (Inna gimbal suspension member) 8,108 Angular velocity sensor 9,109 Position sensor 10a , 10b Telescope optical system 12 CPU 20 Image stabilizer 53, 153 Plate 54, 154 Coil 55, 155 Plate 56, 156 Magnet 71 Bearing (second bearing) 171 Bearing (first bearing) 72, 172 bearing 82, 82a, 82b Through hole 83,83a, 83b Wire rod

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-54-23554 (JP, A) JP-A-55-98718 (JP, A) JP-A-6-250100 (JP, A) JP-A-10- 104682 (JP, A) JP 10-104673 (JP, A) JP 10-104674 (JP, A) JP 10-104675 (JP, A) JP 10-104683 (JP, A) JP-A-10-104684 (JP, A) JP-A-10-104676 (JP, A) Actual development Sho 62-12122 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G02B 27/64 G02B 23/00

Claims (2)

(57) [Claims] 1. An optical system comprising a monocular optical system or a binocular optical system in which an erecting prism is arranged between an objective lens and an eyepiece lens, and an objective lens and an eyepiece lens of these optical systems are fixedly provided in a case. An image stabilizing device mounted on the device, the gimbal suspension having two pivots extending in the left-right direction and the up-down direction of the optical device, wherein the erecting prism is rotatably mounted in the case. Means, an actuator for rotating the gimbal suspension means around the two rotation axes, and two angular position information detections for respectively detecting angular positions of the gimbal suspension means around the two rotation axes. Means, two angular velocity information detecting means fixed to the gimbal suspension means, each detecting angular velocity information of the gimbal suspension means due to a change in posture of the optical device, and the angular position information detecting hand. And based on the information detected by the angular velocity information detecting means, said erecting prism to drive the actuator to secure to the inertial system, controls the two pivoting around pivot axis of the gimbal suspension means Feedback control means, wherein the gimbal suspension means includes an inner gimbal suspension member for fixedly supporting the erecting prism, an outer gimbal suspension member surrounding the inner gimbal suspension member, and the inner gimbal suspension member for the outer gimbal suspension member. A first bearing that rotatably supports the gimbal suspension member, and a second bearing that rotatably supports the outer gimbal suspension member on the case.
Consists of a bearing, the actuator, and the actuator inner gimbal suspension member pivot consists with the outer gimbal suspension member pivot actuator, these two least the outer gimbal suspension member pivot actuator of the actuator, times The rotor member and the stator member are arranged on the rotating shaft of the gimbal suspension member to be moved, and the rotor member has a through hole in the vicinity of the rotating shaft, and the gimbal suspension means is provided through the through hole. An image stabilizing device, which is configured to draw a wire rod from an upper electric member to the outside. 2. The image stabilizing device according to claim 1, wherein one of the rotor member and the stator member is a coil member and the other is a magnet member.