JP2003114455A - Binocular optical apparatus with image movement preventive device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a binocular optical apparatus with an image movement preventive device which is more inexpensive and is excellent in operability. SOLUTION: This binocular optical apparatus has holding means which enables an observer to hole a movement correcting optical means at the prescribed position when image movement correction is not needed and a locking means which is capable of selectively locking the holding means in the state that the holding means holds the movement correcting optical means and the state that the holding means does not hold the same.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a binocular optical device equipped with an image stabilizing device.

[0002]

2. Description of the Related Art Conventionally, a binocular optical device having an image blur preventing device for correcting image blur has been known. This is to provide a correction optical system for correcting the shake of the optical axis of the binocular optical device, and drive this according to the shake amount of the binocular optical device to prevent image shake.

An electromagnetic actuator is widely used as a driving means of a correction optical system. However, the electromagnetic actuator cannot hold its stop position unless electricity is applied, and therefore the electromagnetic actuator is corrected by its own weight or external force. Since the optical system moves, a holding unit for the correction optical system is required in case the image blur prevention is not performed.

The image blur prevention is activated by pushing in an anti-vibration actuation switch provided on the exterior surface of the optical device.
When the anti-vibration operation switch is pushed in, the holding means holding the correction optical system moves. As a result, the correction optical system is released from the holding means and becomes free, and at the same time, the electromagnetic actuator that is the driving means of the correction optical system is energized, and the correction optical system is driven by the driving means.

While the anti-vibration operation switch is kept pressed, the correction optical system remains released from the holding means, in other words, the drive means operates, and the image blur prevention operates.
When the anti-shake operation switch is released, the holding means moves to hold the correction optical system again at the predetermined position, and the energization to the drive means is stopped to end the image blur prevention.

[0006]

By the way, in a binocular optical apparatus such as binoculars, it is a general usage to observe an object while holding the apparatus body by hand. However,
When observing the subject image while activating the image stabilizer, holding the main body of the device by hand and pushing the anti-vibration switch further, unnatural force is applied to the main body of the device and camera shake increases. There is a problem in that even the above image blur prevention processing must be performed, and extra power consumption is required.

In response to this problem, a device has been proposed in which the holding means is moved by an actuator. Since the holding means is moved by the actuator, once the anti-vibration operation switch is operated, the correction optical system can be kept released from the holding means even if the finger is released. And
By another operation, the holding means is moved by the actuator, and the correction optical system is held at a predetermined position again.

However, in this case, since an actuator only for moving the holding means is required and a control device such as a microcomputer is also required, the apparatus cannot be provided at low cost.

Therefore, an object of the present invention was made in view of the above-mentioned problems, and in the case of observing a subject image while activating the image blur prevention, the correction optics is simple and inexpensive. It is an object of the present invention to provide a binocular optical device including an image stabilizing device capable of maintaining a state in which a system is released from a holding unit.

[0010]

In order to achieve the above-mentioned object, the invention described in claim 1 is a binocular optical apparatus equipped with a shake preventing device, when an observer does not need image shake correction. And a holding means for holding the shake correction optical means at a predetermined position, and a locking means capable of selectively locking the shake correction optical means in a state where the shake correction optical means is held and a state where the shake correction optical means is not held. It is a characteristic binocular optical device.

According to a second aspect of the present invention, the locking means includes first biasing force generating means for generating a biasing force in a direction projecting from the binocular optical device, and the first biasing force generating means. The binocular optical device according to claim 1, wherein a state in which the holding means holds the shake correction optical means and a state in which the shake correction optical means are not held are selectively repeated in response to an operation of pushing the means against the biasing force of the means. , Is.

According to a third aspect of the present invention, the holding means includes second biasing force generating means for generating a biasing force in a direction for holding the shake correction optical means at a predetermined position. The binocular optical device according to item 2.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.

1 to 6 show the structure of binoculars (binocular optical device) equipped with a shake correction device according to an embodiment of the present invention.

FIG. 1 is a vertical sectional view when the binoculars are cut at the left and right centers, FIG. 2 is a horizontal sectional view when the binoculars are cut at a plane including the left and right optical axes, and FIG. Fig. 4 is a vertical sectional view of the binoculars taken along a plane including the left optical axis, Fig. 4 is a perspective view showing the structure of the vibration isolation operation switch of the binoculars, and Fig. 5 is a vibration isolation operation switch. FIG. 6 is a development view of the groove portion provided in the IS lock switch, and FIG. 6 is a schematic configuration diagram of the shake correction mechanism. The exterior parts that house the binocular body are not shown.

First, a schematic structure of the optical system of the binoculars will be described. The optical system of binoculars is composed of a pair of left and right objective optical systems 11L and 11R, a pair of left and right erecting optical systems (hereinafter referred to as erecting prisms) 12L and 12R, and a pair of left and right eyepiece optical systems 13L and 13R. ing.

The left objective optical system 11L and the left eyepiece optical system 13L constitute a left telephoto optical system, and the right objective optical system 11R and the right eyepiece optical system 13R constitute a right telephoto optical system. .

The objective optical systems 11L and 11R have optical axes 1L and 1R which are parallel to each other. The light beams incident on the objective optical systems 11L and 11R are respectively erecting prisms 12L and 12R.
Incident on the incident surfaces 121L and 121R of the erecting prisms 12L and 12R, and after repeating total reflection within the erecting prisms 12L and 12R, the light is emitted from the respective exit surfaces 122L and 122R of the erecting prisms 12L and 12R to the eyepiece optical systems 13L and 13R. Incident.

The objective optical systems 11L and 11R include a front group 111.
L, 111R and rear groups 112L, 112R, and image blur correction during observation is performed by the rear group (blur correction optical system) 112.
This is performed by rotating L and 112R in the horizontal direction (arrow Y direction in FIG. 6: hereinafter referred to as yaw direction) and the vertical direction (arrow P direction in FIG. 6: hereinafter referred to as pitch direction).

Next, the structure of the shake correction apparatus will be described in more detail. Reference numeral 14 denotes a pitch rotation support shaft (pitch direction rotation shaft) that extends in the yaw direction at right angles to the optical axes 1L and 1R, and a first plane (H in FIG. 6) orthogonal to the optical axes 1L and 1R.
Within 1).

Reference numerals 15L and 15R denote left and right yaw rotation support shafts (yaw direction rotation shafts) which extend in the pitch direction at right angles to the optical axes 1L and 1R, and are in the above-mentioned first plane. That is, the pitch rotation support shaft 14 and the yaw rotation support shafts 15L and 15R.
Are both in the first plane H1.

16L and 16R are yaw rotation support shafts 15L and
The left and right connecting and rotating support shafts extend parallel to 15R and are parallel to the first plane H1, that is, orthogonal to the optical axes 1L and 1R, and separated from the first plane H1 forward in the optical axes 1L and 1R directions. It is in the second plane (H2 in FIG. 6).

Reference numerals 17L and 17R denote objective optical systems 11L and 1L, respectively.
A pair of left and right objective fixed barrels that respectively hold the front groups 111L and 111R of 1R. These objective fixed cylinders 17L, 1
7R is fixed to the IS body (body member) 19 described later with screws or the like so that the optical axes 1L and 1R are parallel to each other and have a predetermined interval.

18L and 18R are objective optical systems 11L and 1L.
A pair of left and right yaw holding frames (optical system holding members) respectively holding the rear groups 112L and 112R of the 1R. These yaw holding frames 18L and 18R have yaw rotation support shafts 15L and 15L.
R is attached integrally.

A support portion 18a for supporting a permanent magnet 26a constituting a yaw direction detector 26, which will be described later, is formed above the yaw holding frame 18L and behind the yaw rotation support shaft 15L. , The permanent magnet 26a on the supporting portion 18a.
Are fixed with an adhesive or the like.

Further, connecting support shafts 16L and 16R are integrally attached to the upper and lower front sides of the yaw holding frames 18L and 18R, respectively.

Reference numeral 19 denotes an IS main body having a fitting hole portion into which the pitch rotation support shaft 14 is rotatably fitted and held. This I
The S body 19 is formed so as to have a large opening toward the objective optical systems 11L and 11R, and the erecting prisms 13L and 1L.
Holes 191L and 191R through which rear portions of the yaw holding frames 18L and 18R pass are formed on the 3R side. Further, mounting seats 19a to 19d for mounting a drive control board 29 described later are provided on the rear end surface.

At the center of the IS body 19, there is provided a support portion 19e for supporting a permanent magnet 25a and a yoke 25b which constitute a pitch direction drive mechanism (pitch direction drive means) 25 described later. Further, on the right side of the central portion of the IS main body 19, a support portion 19f for supporting a hall element 24b which constitutes a pitch direction detector 24 described later is provided.
Is formed, and the Hall element 24b is connected to the support portion 19
It is fixed to f with an adhesive or the like.

Positioning pins 19g and 19h for positioning a focus interlocking plate 38, which will be described later, and mounting seats 19i to 19k for mounting the focus interlocking plate 38 are provided at the center of the upper portion of the IS main body 19. ing. Further, on the front side of the upper portion of the IS main body 19, support portions 19l, 1 for supporting an IS lock member 28 described later are provided.
9m is provided.

Reference numeral 20 denotes a pitch holding frame (intermediate support member), to which the pitch rotation support shaft 14 is integrally attached. As described above, the pitch rotation support shaft 14 is the IS main body 1.
It is held by 9 so as to be rotatable by a predetermined angle in the pitch direction. As a result, the pitch holding frame 20 is rotatable with respect to the IS main body 19 in the pitch direction by a predetermined angle.

In addition, the IS main body 1 is attached to the pitch holding frame 20.
As in the case of 9, the hole portions through which the yaw holding frames 18L and 18R pass through to the substantially central portion are formed on the left and right. The pitch holding frame 20 holds the yaw rotation supporting shafts 15L and 15R so as to be rotatable in a yaw direction by a predetermined angle. As a result, the rear group 11
Yaw holding frames 18L and 18R holding 2L and 112R
Is rotatable with respect to the pitch holding frame 20 in the yaw direction by a predetermined angle.

Therefore, the yaw holding frames 18L, 18R
Is rotatable with respect to the IS body 19 in a pitch direction and a yaw direction by a predetermined angle.

A support portion 20a for supporting the permanent magnet 24a constituting the pitch direction detector 24 is formed at the center of the pitch holding frame 20. This support portion 2
A permanent magnet 24a is fixed to 0a with an adhesive or the like.

Further, the pitch holding frame 20 has mounting seats 20b to 20 for mounting the coil supporting member 21.
e are formed, and these mounting seats 20b to 20e are formed.
A coil support member 21 for supporting a coil 25c forming a pitch direction drive mechanism 25 described later is attached to the.

Reference numeral 22 is rotatably attached to the connecting support shafts 16L and 16R, and the optical axes of the rear groups 112L and 112R held by the yaw holding frames 18L and 18R are the front groups 111L and 11R.
The yaw holding frames 18L and 18R so that they match the optical axis of 1R.
Is a yaw bridge (connecting member) for holding the.

In this yaw bridge 22, the IS main body 19
And the yaw holding frames 18L, 1 like the pitch holding frame 20.
Holes through which 8R passes are formed on the left and right.

Further, the yaw bridge 22 includes the yaw holding frame 1
When the 8L and 18R rotate about the yaw rotation supporting shafts 15L and 15R, the 8L and 18R can move only in a direction substantially orthogonal to the optical axes of the rear groups 112L and 112R, and the yaw holding frames 18L and 18R.
The R and the pitch holding frame 20 form a so-called parallel link mechanism. Therefore, the optical axes of the rear groups 112L and 112R are always maintained in a parallel relationship.

Further, a yaw direction drive mechanism (yaw direction drive means) 2 to be described later is provided at a substantially central portion of the yaw bridge 22.
7, a coil support portion 22c for supporting the drive coil 27c forming part 7 is formed.

Reference numeral 23 is a yoke support member that supports a permanent magnet 27a and a yoke 27b which constitute a yaw direction drive mechanism 27, which will be described later, and is fixed to the center of the IS main body 19 with a screw or the like.

Reference numeral 24 is a pitch direction detector for detecting the rotational position (angle) of the pitch holding frame 20, and the permanent magnet 24
It is composed of a and a Hall element 24b. Reference numeral 25 denotes a pitch-direction drive mechanism that rotationally drives the pitch holding frame 20 around the pitch rotation support shaft 14, and includes a permanent magnet 25a, a yoke 25b, and a coil 25c. Also,
In the present embodiment, the coil 25c and the coil support member 2
1 with respect to the pitch rotation support shaft 14 rear groups 112L, 112
It is provided on the opposite side of R to balance the weight with the rear groups 112L and 112R.

Reference numeral 26 is a yaw direction detector that detects the rotational position (angle) of the yaw holding frame 18L, and is a permanent magnet 26a.
And the Hall element 26b. A yaw direction drive mechanism 27 drives the yaw bridge 22, and is composed of a permanent magnet 27a, a yoke 27b, and a coil 27c.

Reference numeral 28 is an IS lock member for holding the yaw bridge 22 at a predetermined position. This IS lock member 28
By holding the yaw bridge 22 at a predetermined position when the observer does not need image blur correction, the optical axes of the rear groups 112L and 112R can be matched with the optical axes of the front groups 111L and 111R. It can also be used as ordinary binoculars.

As a holding method, a holding portion 22d having a substantially U shape is provided at the center right of the yaw bridge 22, and a cylindrical projection portion 28b provided at one end of the IS lock member 28 is locked to the holding portion 22d. The movement of the yaw bridge 22 is blocked.

The IS lock member 28 is always urged by the urging member 30 (second urging force generating means) in the direction in which the cylindrical protrusion 28b is locked to the holding portion 22d. Therefore, for example, even when an observer accidentally drops the binoculars, the IS lock member 28 is always urged by the urging force of the urging member 30 so that the cylindrical protrusion 28b is always attached to the holding portion 22d. Since it is locked, the shake compensation mechanism is not damaged.

Next, the structure of the anti-vibration operation switch according to the present application will be described.

Reference numeral 50 denotes an IS lock switch. When the observer uses the shake correction function, the IS lock switch 50 is moved through the switch rubber 61 provided in the hole of the exterior part 60 in the direction of the arrow in the figure. The switch interlocking member 52 is pushed down by the operation of pushing it in. This makes I
The protrusion 28a provided on the S lock member 28 is pushed down, the IS lock member 28 rotates in the direction of the arrow in the drawing, and the cylindrical protrusion 28b is separated from the holding portion 22d to release the holding of the yaw bridge 22. That is, the yaw holding frame 18
The rear groups 112L and 112R held by the L and 18R can rotate in the yaw direction and the pitch direction.

On the other hand, a groove 50a is formed on the side surface of the IS lock switch 50, and the engaging pin 53a is engaged with the groove 50a. The other end of the engaging pin 53a has a dowel 53b with which an urging spring 54 engages, so that the engaging pin 53a can be urged in its axial direction and can be bent in the direction of the arrow in the figure. And the engagement pin 53a
Is engaged with the groove portion 50a, the engaging pin 53a is always biased in the X direction in the drawing, so that the biasing spring 54 is previously loaded.
Is bent and installed in a predetermined direction. Also, the groove 5
As shown in the development view of FIG. 5, 0a has a different depth depending on the location, and the engaging pin 53a moves while engaging in only one direction. That is, the engagement pin 53a is designed to move irreversibly along the groove 50a.

Further, an urging spring 51 (first urging force generating means) is provided at the bottom of the IS lock switch 50, and urges the IS lock switch 50 in the direction of always protruding from the binoculars.

Next, an electrical configuration for controlling the shake correcting apparatus will be described.

This shake correction apparatus includes a shake detector for detecting the shake amount (device shake) of binoculars during observation, and the movement of a focus image formed by the objective optical system based on the output signal from the shake detector. The rear group 112L as a shake correction optical system so as to reduce the shake of the observed image by suppressing
And a drive control circuit for controlling the drive of 112R.
The shake detector includes a pitch-direction shake sensor 29p that detects shake in the pitch direction and a yaw-direction shake sensor 29y that detects shake in the yaw direction.

Reference numeral 29 is a drive control board having the shake detector, other control circuits, and a drive circuit. The control circuit mounted on the drive control board 29 controls the pitch direction drive mechanism 25 and the yaw direction drive mechanism 2 in the direction in which the image shake caused by the shake of the binoculars is canceled based on the detection signal of the shake detector.
7 and 7 are included in the microcomputer.

When using the shake correction function, the observer pushes the IS lock switch 50 in the direction of the arrow in the figure against the biasing spring 51 via the switch rubber 61.
The IS lock switch 50 pushes down the switch interlocking member 52, the switch interlocking member 52 pushes down the protrusion 28a provided on the IS lock member 28, and activates an electric switch that outputs an electric ON / OFF signal (not shown). The power of the drive control board 29 is turned on. At the same time, the IS lock member 28 releases the holding of the yaw bridge 22, the yaw holding frames 18L and 18R are rotatable in the pitch direction and the yaw direction, and the rear groups 112L and 112R are rotatable in the pitch direction and the yaw direction. Become.

At this time, the engagement pin 53a is on the slope 501 of the groove 50a and has the same depth as the surface 504. Therefore, in this state, shake correction similar to the conventional one can be performed, and if the IS lock switch 50 is stopped from being pushed, the IS lock member 28 holds the yaw bridge 22 and the shake correction is stopped.

On the other hand, when the observer further presses the IS lock switch 50 by a predetermined amount, it passes through the surface 502 and feels the first click. At this time, the engagement pin 53a is engaged with the groove 50.
It is on the surface 503 of “a”, and even if the IS lock switch 50 is released, it cannot return to the surface 502 and automatically advances to the surface 504 due to the bending (buckling) of the biasing spring 54. Since the IS lock switch 50 always receives the biasing force of the biasing spring 51, the IS lock switch 50 does not move to the surface 505, and the release of the yaw bridge 22 is maintained. Therefore, the observer can observe while the IS lock switch 50 is released from the hand while using the shake correction function.

If the binoculars are shaken by the shake of the observer's hand while the shake correction function is operating, the pitch direction drive mechanism 25 or the yaw direction drive mechanism 27 is constructed based on the detection signal of the shake detector. Coil 25c, 27c
A control voltage is applied from the drive control board 29 to. Here, the control voltage applied to the coils 25c and 27c is calculated as a voltage required to rotate the rear groups 112L and 112R by an angle that can cancel the image shake caused by the shake of the binoculars. Etc.

As a result, a driving force (excitation force) based on Fleming's law is applied to the coil 25c or the coil 27c.
Occurs, and the pitch holding frame 20 or the yaw bridge 22 holding the coil 25c or the coil 27c moves in the yaw direction or the pitch direction. Thus the yaw holding frame 1
The rear groups 112L and 112R held by the 8L and 18R rotate in the yaw direction and the pitch direction, and the observer can observe left and right images without shake.

With the above structure, when the observer uses the shake correction function, the IS lock switch 50 is pushed in to release the yaw bridge 22, and the released state can be maintained. If the IS lock switch 50 is stopped from being pushed at the initial stage, shake correction can be performed only while the IS lock switch 50 is pushed, as in the conventional case.

[0058]

As described above, according to the present invention,
Since the mechanism for maintaining the released state of the connecting member is provided, it is not necessary for the observer to hold the apparatus main body by hand and to perform a troublesome operation such as continuing to push in the image stabilization operation switch. As a result, unnatural force is not applied to the main body of the apparatus, and it is characterized by reducing unnecessary image blur prevention processing and reducing power consumption. Moreover, since the release state maintaining mechanism is composed of mechanical parts, it is possible to obtain a sufficient effect with an inexpensive structure.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of the binoculars according to the present embodiment cut at the left and right centers.

FIG. 2 is a horizontal cross-sectional view of the binoculars according to the present embodiment taken along a plane including the left and right optical axes.

FIG. 3 is a vertical cross-sectional view of the binoculars according to the present embodiment taken along a plane including the left optical axis.

FIG. 4 is a perspective view showing a configuration of an image stabilization operation switch of the binoculars according to the present embodiment.

FIG. 5 is a development view of a groove portion provided in an IS lock switch that constitutes the anti-vibration operation switch according to the present embodiment.

FIG. 6 is a schematic configuration diagram of a shake correction mechanism according to the present embodiment.

[Explanation of symbols]

1R-1R, 1L-1L Optical axis 11R, 11L Objective optical system 111R, 111L front group 112R, 112L rear group 12R, 12L Upright prism 121R, 121L incident surface 122R, 122L reflective surface 13R, 13L eyepiece optical system 14 First spindle 15R, 15L Second support shaft 16R, 16L Third support shaft 17R, 17L Objective fixed cylinder 18R, 18L yaw holding frame 181R, 181L Yaw holding frame in the second embodiment 182R, 182L balance member 18a support part 19 body frame 191R, 191L hole 19a to 19d mounting seat 19e, 19f Supporting part 19g, 19h Positioning pin 19i-19k mounting seat 19l, 19m support 20 pitch holding frame 20a support part 20b-20e mounting seat 21 coil support member 22 Yeo Bridge 22c coil support 22d holding part 23 Yoke support member 24 Pitch direction detecting means 24a permanent magnet 24b Hall element 25 pitch direction drive means 25a permanent magnet 25b yoke 25c coil 26 Yaw direction detecting means 26a permanent magnet 26b Hall element 27 Yaw direction drive means 27a Permanent magnet 27b York 27c coil 28 IS lock member (holding means) 28a spherical protrusion 28b Cylindrical protrusion 29 Drive control board 50 IS lock switch 50a groove 51 biasing spring 52 Switch interlocking member 53a Engagement pin 54 Biasing spring 60 Exterior parts 61 switch rubber

Claims (3)

[Claims] 1. A binocular optical device including a shake prevention device, wherein a holding unit holds the shake correction optical unit at a predetermined position when an observer does not need image shake correction, and the holding unit is the shake correction optical unit. A binocular optical device comprising locking means capable of selectively locking a state in which the means is held and a state in which the means is not held. 2. The locking means has a first biasing force generating means for generating a biasing force in a direction projecting from the binocular optical device, and resists the biasing force of the first biasing force generating means. 2. The binocular optical device according to claim 1, wherein the holding means selectively repeats a state in which the shake correction optical means is held and a state in which the shake correction optical means is not held in response to a pushing operation. 3. The binocular optical device according to claim 2, wherein the holding unit includes a second biasing force generating unit that generates a biasing force in a direction of holding the shake correction optical unit at a predetermined position. .