JPH10104675A - Image stabilizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the case of an optical device in which an image stabilizing device is loaded compact without spoiling the design of the optical device and making a gimbal hanging means interfere with the inside surf ace of the case by enlarging a space in the case at the nearest part between the gimbal hanging means by projectingly forming a finger hooking part for holding the case toward the outside and forming the inside surf ace shape thereof in a recessed state toward the outside at the nearest part. SOLUTION: Since a rotation driving motor(torquer) 5 is arranged near the right end part of the gimbal hanging member 7, the diameter of a bearing 71 is formed to be comparatively large. Normally, the bearing 71 interferes with the case 30. However, since the cross section of the finger hooking part 30a on the inside surface side of the case 30 is formed in a V-shaped so as to cave in, it can be utilized as the supporting part of the bearing 71.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical device such as a monocular, a binocular, and a video camera, which vibrates, when the angle of emergence of a light beam from an observation object with respect to the optical axis of the optical device fluctuates. The present invention relates to an image stabilizing device provided in an optical device for preventing an optical image from being blurred and observed.

[0002]

2. Description of the Related Art When an optical device such as a monocular or a binocular for optical observation is held and operated by hand, particularly when the optical device is used by being brought into an aircraft or a vehicle, etc.
Vibrations and swings of aircraft, vehicles, and the like are transmitted to the optical device, and the exit angle of the light beam from the observation object with respect to the optical axis fluctuates, often deteriorating the observed optical image. The vibration transmitted to such an optical device, even if its amplitude is small,
The field of view of monoculars, binoculars, etc. is narrow, the exit angle of the luminous flux is enlarged by the eyepiece, and the image of the objective lens is enlarged and observed by the eyepiece, and finally the image appealing to the vision deteriorates From being observed,
As the magnification increases, fluctuations in the exit angle of the light beam with respect to the optical axis and deterioration in the observed image caused by vibrations and the like cannot be ignored.

Hitherto, various devices have been proposed for stabilizing an image in order to prevent the angle of emission of the light beam with respect to the optical axis from fluctuating due to vibrations and swings transmitted to the optical device, thereby preventing the observed image from deteriorating. Have been. For example, Japanese Patent Publication No. 57-37852 discloses a binocular provided with an anti-vibration means using a rotating inertial body (gyromotor) in order to correct blurring of an observation image in the binocular.

That is, in this technique, an erect prism is arranged on an optical axis between an objective lens and an eyepiece of binoculars, and the erect prism is fixed on gimbal suspension means to which a rotating inertia body is attached. In addition, even if the binoculars vibrate due to camera shake or the like, the erecting prism is held at substantially the same spatial position to prevent blurring of the observation image of the binoculars.

In the prior art using such a rotary inertia body and gimbal suspension means, image stabilization can be achieved with high accuracy, but the effective diameter of the objective lens increases as the magnification and resolution of the binoculars increase. As a result, the size of the erecting prism is increased, thereby increasing the weight of the rotating inertial body that spatially holds the prism and increasing the power consumption for driving the rotating inertial body.

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 on the basis of the output value from the angular velocity sensor to erect. An image stabilizing device has been proposed in which the attitude of a prism is fixed with respect to the earth (inertial system) (Japanese Patent Laid-Open No. 6-250100). According to this device, unlike other image stabilizing devices using an angular velocity sensor, there is no need to positively move an optical element (for example, a vari-angle prism or a lens) in response to vibration. There is an advantage that correction can be performed over a larger angle range. Also, there is no disadvantage in terms of lens aberration as in these other techniques. Further, the size of the optical device can be reduced.

[0007]

However, an image stabilizing device of the type which controls the rotational position of the gimbal suspension means based on the output value from the angular velocity sensor mounted on the gimbal suspension means (hereinafter referred to as "angular velocity"). In the case where the sensor-mounted image stabilizing device is used, the gimbal suspension means is housed in the case of the optical device.

In other words, it is desirable that the case be as compact as possible to make it easier to hold. However, the gimbal suspension means is provided with an actuator means for rotating the gimbal suspension means. Since the suspension means is rotatably supported by the case, a certain occupied space is required, and it is not always easy to make the case compact. In particular, in order to make the case easy to hold by hand, and at the request of design, it is preferable to form the end of the case into a tapered shape. Since it easily interferes with the inner surface, it is more difficult to reduce the size.

The present invention has been made in view of such circumstances, and when an image stabilizing device equipped with an angular velocity sensor is employed, the design of the optical device on which the device is mounted is not impaired, and the gimbal suspension is used. It is an object of the present invention to provide an image stabilizing device capable of reducing the size of a case without interfering means with the inner surface of the case.

[0010]

The image stabilizing device of the present invention has a monocular optical system or a binocular optical system in which an erect prism is disposed between an objective lens and an eyepiece, and the objective lens of these optical systems is used. And an image stabilizing device mounted on an optical device having an eyepiece fixed in a case,
Gimbal suspension means having two rotation shafts extending in the left-right direction and the up-down direction of the optical device, and the erect prism is rotatably mounted on the case; Actuator means for rotating around a moving axis, two angular position information detecting means for detecting the angular positions of the gimbal suspension means around the two rotation axes, respectively, and fixed to the gimbal suspension means. Based on information detected by the two angular velocity information detecting means for detecting angular velocity information of the gimbal suspension means due to a change in the attitude of the optical device, and the angular position information detecting means and the angular velocity information detecting means. Feedback control for driving the actuator means so as to fix the prism to the inertial system and controlling the rotation of the gimbal suspension means around two rotation axes. A step, and a finger catching portion for gripping the case is formed so as to protrude outward at a portion of the case closest to the gimbal suspension means. is there.

The "closest portion" is generally a corner of a member constituting the gimbal suspension means, but is not necessarily limited to this. In the above configuration, when the actuator unit is provided in a portion of the gimbal suspension unit near the closest part to the case, a part of the actuator unit is inserted into an inner wall surface of the finger hook unit. Forming the concave portion is preferable because the space can be made more efficient.

Further, if a rubber member is attached to the outer surface of the finger hook portion of the case, the grip force can be increased, so that the case can be gripped more easily.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1, 2, 3, and 4 are a plan cross-sectional view, a front cross-sectional view, a side cross-sectional view, and a perspective view, respectively, showing a state where the image stabilizing device according to the embodiment of the present invention is incorporated in binoculars. As shown, the binoculars incorporating the image stabilizing device 20 of the present embodiment in a case 30 include a pair of objective lens systems 1a and 1b, a pair of eyepiece systems 2a and 2b, and a pair of upright lenses. Equipped with prisms 3a and 3b, objective lens 1
a, eyepiece 2a, erect prism 3a are first telescope system 10a
The objective lens 1b, the eyepiece 2b, and the erecting prism 3b similarly constitute a second telescope system 10b.
A pair of second telescope systems 10a and 10b constitute a binocular system.

A pair of objective lens systems 1a and 1b and eyepiece lens systems 2a and 2b constituting the binocular system are fixed to a case 30 of the present optical apparatus, and the erecting prisms 3a and 3b are vertically moved ( The direction in which the optical axis extends and the objective lens systems 1a and 1
a rotating shaft 6 extending in the direction perpendicular to the arrangement direction of the b) and in the lateral direction of the apparatus (the arrangement direction of the objective lens systems 1a and 1b);
It is rotatably mounted on the case 30 via the gimbal suspension members 7, 107 having 106 (see FIG. 5).

Hereinafter, basic functions premised on the apparatus of the present embodiment will be described with reference to FIGS. In this specification, the vertical direction of the apparatus indicates the direction of arrow A in the figure,
The horizontal direction of the device indicates the direction of arrow C in the figure.

In FIG. 5, the gimbal suspension members 7, 107 on which the erecting prisms 3a, 3b are mounted are fixed to the case 30, so that the gimbal suspension members 7, 107 are fixed.
The above erect prisms 3a and 3b attached to 107 are case 3
In a state where the optical system is fixed to 0, the present optical device has a configuration of a normal binocular system, but the optical axes 4a and 4b of the telescope optical systems 10a and 10b at this time are referred to as the optical axes of the present optical device. .

It should be noted that appropriate arrangement positions of the objective lens systems 1a and 1b, the eyepiece lens systems 2a and 2b, the erect 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 a literature (for example, Japanese Patent Publication No. 57-37852), it is omitted here.

As shown in FIG. 5, in the present embodiment, the inner gimbal suspension member 107 is
, And the gimbal suspension device has a double inner and outer structure. While the outer gimbal suspension member 7 is rotated by a rotation shaft 6 extending in the left-right direction of the apparatus so as to correct vertical image blur, the inner gimbal suspension member 10 is rotated.
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. Erect prism 3a,
3b is attached to the inner gimbal suspension member 107. In FIG. 5, for convenience of description, the upper and lower relations are shown to be opposite to those in FIGS.

An angular velocity sensor 8 is fixed at the center of the upper side wall of the outer gimbal suspension member 7, while an angular velocity sensor 108 is fixed at the center of the front side wall of the inner gimbal suspension member 107. Is fixed. The angular velocity sensor 8 detects the rotational angular velocity ω ₁ when the outer gimbal suspension member 7 rotates in the direction of arrow B due to the vertical movement of the case 30, whereas the angular velocity sensor 8 Reference numeral 108 denotes a sensor for detecting 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 mounted at _{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 against the shake of the case 30 based on the detection values from the angular velocity sensor 8 and the position sensor 9. A rotation drive motor (torquer) 5 for rotating the rotation shaft 6 of the gimbal suspension member 7 is attached. On the other hand, a position sensor 109 for detecting the rotation angle θ ₂ of the rotation shaft 106 for performing position feedback control in addition to the speed feedback control based on the detected angular velocity is attached to one end of the rotation shaft 106. Pivot axis
The other end of the erecting prism 3 is connected to the other end of the prism 106 based on the detection values from the angular velocity sensor 108 and the position sensor 109.
The rotation axis 10 of the inner gimbal suspension member 107 is set so that the a and 3b always return to the initial postures against the horizontal movement of the case 30.
A rotary drive motor (torquer) 105 for rotating 6 is attached.

Next, the basic concept of the control loop of the present embodiment will be described with reference to FIG. As shown, the apparatus comprises amplifiers 11a and 11a for amplifying an angular velocity signal from an angular velocity sensor 8 and an angular signal from a position sensor 9, respectively.
b, a CPU 12 for calculating a drive amount of the rotary drive motor 5 based on the angular velocity signal and the angle signal so as to return the erect prisms 3a and 3b to the original posture, and outputting a control signal based on the calculation; A motor drive circuit 13 for driving the rotary drive motor 5 by amplifying the control signal from the CPU 12 is provided. Further, a ROM in which various programs are stored is connected to the CPU 12. On the other hand, the angular velocity sensor 10
8 and the detection signals from the position sensor 109, like the detection signals from the angular velocity sensor 8 and the position sensor 9, are converted into control signals by a control loop similar to the control loop shown in FIG. The rotation drive motor 105 is driven.

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, 107 to their original postures, but a common CPU 12 may be used. .

The above-mentioned erecting prisms 3a and 3b include an erecting prism of Schmidt, an erecting prism of Abbe, an erecting prism of Bauern fend, an erecting prism of Polo and There is an erect prism of Dach, etc. FIG. 7 shows an erect prism of Schmidt. The Schmidt erect prism includes a prism 23 and a prism 24 as shown in the figure, and a part 25 of the prism 24 is a roof reflection surface. In such an erect prism, there is an incident optical axis position where the incident optical axis 21 and the exit optical axis 22 can be on the same straight line as shown in the figure. In such an erect prism capable of taking the incident optical axis 21 and the exit optical axis 22 on the same straight line, FIG.
As shown in FIG.
Is parallel to the optical axis 22 after passing through the erecting prism and separated by h below the exit optical axis 22.
It has the property of becoming 22 '.

Each of the angular velocity sensors 8 and 108 comprises a columnar vibrator having a columnar shape and a plurality of piezoelectric ceramics.
A piezoelectric vibrating gyroscope utilizing Coriolis force, wherein at least two detecting piezoelectric ceramics and at least one feedback piezoelectric ceramic are provided on a side surface of a columnar vibrator.

Each of the detecting piezoelectric ceramics outputs a detection signal having a different value according to the vibration, and an angular velocity is obtained by calculating a difference between the detection signals. Note that the feedback piezoelectric ceramic is used for correcting the phase 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 and FIG.
Is formed in a tapered shape from the center to the left and right ends to make it easy to hold the case 30 with both hands.
A pair of upper and lower finger hooks 30a extending in the front-rear direction is formed near the right end of the tapered portion on the right side. Each of the finger hooks 30a has a case outer surface side formed to protrude in a rectangular cross section, and a case inner surface side is depressed in a V-shaped cross section. Rubber members 31 are fixed to the outer surfaces of the finger hooks 30a. A bearing 71 is provided on the inner surface of each of the finger hooks 30a to rotatably support the gimbal suspension member 7 on the case 30 at the right end of the outer gimbal suspension member 7.
Outer ring is fitted.

In the vicinity of the right end of the gimbal suspension member 7, the rotary drive motor (torquer) 5 is provided. The rotary drive motor 5 is mounted on the circumference of a plate 53 fixed to the case 30. A plurality of coils 54 distributed and arranged,
A plate screwed to the right end of the gimbal suspension member 7
An annular magnet 56 attached to 55 is arranged in close proximity to and facing. The magnet 56 is provided so as to be located in a space on the inner peripheral side of the bearing 71.

As described in detail above, in the present embodiment, in the image stabilizing apparatus equipped with the angular velocity sensor, the case 30 of the binoculars on which the angular velocity sensor is mounted is located at the closest part to the outer gimbal suspension member 7. Since the finger hook 30a for gripping the case 30 is formed so as to protrude outward, the shape of the inner surface of the case in the finger hook 30a can be formed concave toward the outside. The space in the case can be enlarged at the closest part. Therefore, the size of the case 30 can be reduced without damaging the design of the binoculars on which the image stabilizing device 20 is mounted and without causing the outer gimbal suspension member 7 to interfere with the inner surface of the case.

In the present embodiment, since the rotary drive motor (torquer) 5 as the actuator means is provided near the right end of the gimbal suspension member 7, a bearing is provided.
71 is formed with a relatively large diameter, which is usually the case
Although this interferes with 30, the finger holding portion 30a formed on the case 30 has a V-shaped cross-section on the inner surface side of the case and can be used as a support portion for the bearing 71.

Further, in this embodiment, since the rubber member 31 is fixed to the outer surface of the finger hook portion 30a of the case 30, the grip force can be increased, so that the case 30 can be gripped more easily. Can be done.
Note that the image stabilizing device of the present invention is not limited to the above-described embodiment, and various other changes can be made. For example, as the angular velocity information detecting means, a cylindrical vibrator type piezoelectric In addition to the vibrating gyro sensor, it is possible to use a piezoelectric vibrating gyro sensor using various types of vibrators such as a triangular prism vibrator type, a quadrangular prism vibrator type, a tuning fork vibrator type, and the like. Various angular velocity sensors can be used.

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

[0032]

According to the image stabilizing device of the present invention, in the image stabilizing device equipped with an angular velocity sensor, the optical device is provided with a case for holding the case at the closest part to the gimbal suspension means in the case. Since the finger hook portion is formed so as to protrude outward, the inner shape of the case in the finger hook portion can be formed in a concave shape toward the outside. Can be expanded. Therefore, without damaging the design of the optical device on which the image stabilizing device is mounted, and
Without causing the gimbal suspension means to interfere with the inner surface of the case,
The case can be made compact.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view showing binoculars incorporating an image stabilizing device according to an embodiment of the present invention.

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

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

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

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

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

FIG. 7 is a side view for explaining the erect prism shown in FIG. 2;

[Explanation of symbols]

 1a, 1b Objective lens (objective lens system) 2a, 2b Eyepiece lens (eyepiece lens system) 3a, 3b Erect prism 4a, 4b Optical axis 5,105 Rotary drive motor (ToruCa) 6,106 Rotary axis 7,107 Gimbal Suspension member 8,108 Angular velocity sensor 9,109 Position sensor 10a, 10b Telescope optical system 12 CPU 20 Image stabilizer 30 Case 30a Finger hook 31 Rubber member 53 Plate 54 Coil 55 Plate 56 Magnet 71 Bearing

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[Procedure amendment]

[Submission date] October 31, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0002

[Correction method] Change

[Correction contents]

[0002]

BACKGROUND OF THE INVENTION AND SUMMARY OF THE INVENTION monocular, when operating in a hand held optical device for the purpose of optical observation such as binoculars, especially bring the optical device into an aircraft or vehicle, etc. When used, vibrations and fluctuations of an aircraft, a vehicle, and the like are transmitted to the optical device, and the exit angle of the light beam from the observation object with respect to the optical axis fluctuates, often deteriorating the observed optical image. Vibration transmitted to such an optical device
Is suitable for monocular or binoculars even if its amplitude is small.
In that case, the view is narrow and the observation object is enlarged and observed.
Therefore, the fluctuation angle with respect to the optical axis is also enlarged. That
Therefore, even at the time of swinging with a relatively small angle fluctuation speed,
The observed object moves rapidly in the field of view, or the angle of fluctuation is large.
When it is hard, there is an inconvenience of being out of sight
I will. Also, at the time of swinging with a relatively large angle fluctuation speed,
Observe only the magnification of the optical device even if the angle of change is relatively small
Observed when the angle fluctuation speed of the image of the object increases
Therefore, there is a disadvantage that the image is blurred and the image is deteriorated.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

That is, in this technique, an erect prism is arranged on an optical axis between an objective lens and an eyepiece of binoculars, and the erect prism is fixed on gimbal suspension means to which a rotating inertia body is attached. In addition, even if the binoculars vibrate due to camera shake or the like, the erecting prism is held in substantially the same posture to prevent blurring of the observation image of the binoculars.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

The prior art utilizing such a rotary inertia body and gimbal suspension means can stabilize an image with high accuracy, but at the same time, obtains a large inertial force in a small space, thereby achieving high speed rotation.
A rotating body is required, and vibration generated by the rotating body itself is reduced.
Since it is necessary to reduce the size, it is necessary to have high precision.
The problem with this demand for small size, high speed, and high precision is
Power and turning on the power until the necessary inertia is obtained.
Is disadvantageous. Also double the binoculars
Increase the effective diameter of the objective lens as the efficiency and resolution increase.
The larger the size, the larger the upright prism,
The above problem is exacerbated by the need for
In addition to this, the power consumption also increases accordingly.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

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 on the basis of the output value from the angular velocity sensor to erect. An image stabilizing device has been proposed in which the attitude of a prism is fixed with respect to the earth (inertial system) (Japanese Patent Laid-Open No. Hei 6-250100). According to this device,
The erect prism held on the gimbal suspension means
Inertia force, especially high vibration speed, high vibration frequency
For vibrations with relatively large amplitude,
High transformation retention ability. Therefore, from the angular velocity sensor
The control force of the rotational position based on the output may be small. Only
And other image sources that drive the vari-angle prism and lens.
The stabilization device requires an active drive and has a high frequency
To compensate for large amplitudes in vibration, drive the
Must be adjusted in a large angle range.
And difficult.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] 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 In this case, since the gimbal suspension means is housed in the case of the optical device, the following problem arises.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

That is, it is desirable that the case be as compact as possible in order to make it easier to hold. However, the gimbal suspension means is provided with an actuator for rotating the gimbal suspension means. Since the means is rotatably supported by the case, a certain occupied space is required. Therefore, it is not always easy to make the case compact. In particular, the case is preferably formed to have a tapered end portion in order to make it easy to hold by hand, and according to design requirements.
In such a case, the gimbal suspension means easily interferes with the inner surface of the case, and it is more difficult to reduce the size of the case.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

The image stabilizing device of the present invention has a monocular optical system or a binocular optical system in which an erect prism is disposed between an objective lens and an eyepiece, and the objective lens of these optical systems is used. And an image stabilizing device mounted on an optical device having an eyepiece fixed in a case,
Gimbal suspension means having two rotation shafts extending in the left-right direction and the up-down direction of the optical device, and the erect prism is rotatably mounted on the case; An actuator for rotating about a moving axis, two angular position information detecting means for detecting the angular positions of the gimbal suspension means around the two rotation axes, respectively, and a fixed to the gimbal suspension means. Provided, two angular velocity information detecting means for respectively detecting angular velocity information of the gimbal suspension means due to a change in the attitude of the optical device, and based on 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 It includes a, at the closest portion between the gimbal suspension means in the case, finger hook portion for grasping the case, is characterized in that it is protruded toward the outside.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

The "closest portion" is generally a corner of a member constituting the gimbal suspension means, but is not necessarily limited to this. In the above configuration, when the actuator is provided in a portion of the gimbal suspension means near a portion closest to the case, the actuator is provided on an inner wall surface of the finger hook .
Hakare the efficiency of space by forming a recess portion of the data is inserted, preferably.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

The above-mentioned erecting prisms 3a and 3b include an erecting prism of Schmidt, an erecting prism of Abbe, an erecting prism of Bauern fend, an erecting prism of Polo, and an erecting prism of Polo. There is an erect prism of Dach, etc. FIG. 7 shows an erect prism of Schmidt. The Schmidt erecting prism is composed of a prism 23 and a prism 24 as shown in the figure, and a part 25 of the prism 24 is a roof reflection surface. In such an erect prism, there is an incident optical axis position where the incident optical axis 21 and the exit optical axis 22 can be on the same straight line as shown in the figure. As shown in FIG. 7, in an erecting prism capable of taking the incident optical axis 21 and the emitting optical axis 22 on the same straight line, as shown in FIG.
After passing through the erecting prism, the ray 21 'parallel to 1 has the property of becoming a ray 22' parallel to the optical axis 22 and separated by h below the exit optical axis 22. In addition,
With an erect prism, the incident optical axis and the exit optical axis are the same straight line.
Other prisms can be used without being limited to those above.

Claims (3)

[Claims] 1. An optical system comprising a monocular optical system or a binocular optical system in which an erecting prism is disposed between an objective lens and an eyepiece lens, wherein the objective lens and the eyepiece lens of these optical systems are fixed in a case. An image stabilizing device mounted on the device, comprising two rotating shafts extending in a horizontal direction and a vertical direction of the optical device, and a gimbal suspension for rotatably mounting the erect prism to the case. Means, actuator means for rotating the gimbal suspension means around the two rotation axes, and two angular position information for detecting the angular positions of the gimbal suspension means around the two rotation axes, respectively. Detecting means; two angular velocity information detecting means fixed to the gimbal suspending means for respectively detecting angular velocity information of the gimbal suspending means due to a change in attitude of the optical device; Means for driving the actuator means to fix the erect prism to an inertial system based on the information detected by the means and the angular velocity information detection means, and to rotate the gimbal suspension means around two rotation axes. Feedback control means for controlling, wherein a finger hook portion for gripping the case is formed so as to protrude outward at a portion of the case closest to the gimbal suspension means. Image stabilizing device. 2. The actuator means is provided in a portion of the gimbal suspension means in the vicinity of a portion closest to the case, and a concave portion into which a part of the actuator means is inserted is formed on an inner wall surface of the finger hook. 2. The image stabilizing device according to claim 1, wherein: 3. The image stabilizing device according to claim 1, wherein a rubber member is attached to an outer surface of the finger hook portion of the case.