JP2003189158A - Image pickup device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image pickup device that can enhance a degree of outward design freedom by simplifying operations for flange back adjustment. <P>SOLUTION: A holder 12 for supporting an imaging element, a slider 13 to be abutted on the holder, and a clamp means 10 to abut the holder 12 on the slider 13 are placed to the image pickup device so as to adjust a distance of the imaging element to a lens mount face 5a in an optical axis direction, an inclination part inclined to a face orthogonal to the optical axis is provided at a part on which the holder 12 and the slider 13 are abutted. Then the image pickup device is provided with a mechanism freely movable supporting the slider 13 within a plane nearly orthogonal to the optical axis and a mechanism for locking the adjustment of a position of the holder 12 in the optical axis direction by changing a moving amount of the slider 13 by an adjustment member 7. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for adjusting a distance (flange back distance) in the optical axis direction of an image pickup element to a lens mount surface in an image pickup apparatus such as a video camera.

[0002]

2. Description of the Related Art In a video camera, the flange back distance (distance in the optical axis direction of the image pickup device with respect to the lens mount surface) depending on the type of lens attached to the lens mount portion, for example, C mount lens, CS mount lens, etc. It has a mechanism for adjusting. For example, a movement adjusting mechanism of the image pickup device is adopted in which the image pickup device is moved along the optical axis direction with respect to the lens mount surface of the front panel to adjust the flange back distance. Also, in a video camera having a back focus adjustment mechanism, a position adjustment mechanism using an adjustment ring,
A lock mechanism for the image sensor using a lock screw is provided, and each has an independent structure.

15 to 17 show an example of the appearance of a conventional video camera having a flange-back adjusting mechanism. FIG. 15 is a front view and FIG. 16 is a plan view.
FIG. 17 shows a side view, respectively.

The outer casing of the video camera a comprises a front panel b, a camera case c, and a rear panel d.
As shown in FIGS. 15 and 16, a part of the adjustment ring e is vertically exposed from the main body of the video camera. That is, on the upper and lower side surfaces of the front panel b, the camera case c
Since the holes are formed at positions close to each other and the adjustment ring e is partially exposed to the outside through each hole, the adjustment can be performed by rotating the part. Although illustration of the inside of the device is omitted,
For example, a mechanism is provided in which the position of the image sensor is moved back and forth in the optical axis direction via a cam member by operating the adjustment ring e.

Further, as shown in FIG. 17, a screw member f for locking is provided on the side surface of the front panel b, and by tightening the screw member f, the locking operation of the image pickup device is performed, The lock release operation can be performed by loosening the screw member f. For example, the screw member f
By rotating the adjustment ring in the tightening direction, a pressure contact force is exerted on the adjustment ring e via a brake shoe or the like, and the adjustment ring is locked so as not to rotate carelessly.

[0006]

However, in the conventional configuration, since the flange back adjustment mechanism and the image pickup element locking mechanism are independently configured, the following three steps are required to perform the flange back adjustment. Will be needed.

1. 1. Unlock operation by rotating the locking screw member f 2. Adjust the flange back by rotating the adjustment ring e. Locking operation of the image sensor by rotating the locking screw member f.

Therefore, there is room for improvement in operability and design as shown below.

(1) At the time of adjustment, first, the locking screw member f is rotated to release the lock mechanism, and then the adjustment ring e is rotated to adjust the position of the image pickup device, and the locking device is locked again. It is necessary to tighten the screw member f to lock the image pickup device (that is, the stepwise operation is troublesome).

(2) Since the adjusting ring e is used, the ring is partially exposed from the side surface of the camera body, which gives a great restriction on the appearance design.

Regarding the above item (1), a method of attaching an automatic lock mechanism or the like to the adjustment ring e can be considered, but there is a problem that the mechanism is complicated and the cost is increased accordingly. Regarding the above item (2), for example,
There is a mechanical restriction that an operation recess or the like must be formed in a place where the adjustment ring e is partially exposed to the outside in the outer casing of the device.

Therefore, it is an object of the present invention to simplify the operation at the time of adjusting the flange back in the image pickup apparatus and to increase the degree of freedom in external appearance design.

[0013]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a holder for holding an image pickup device, a slider abutting against the holder, and a holder abutting against the slider. And a slanting part that is slanted with respect to a plane orthogonal to the optical axis is formed in the holder or the slider at a portion where the holder and the slider contact each other. A mechanism for holding the slider movably in a plane substantially orthogonal to the optical axis and a mechanism for adjusting and locking the position of the holder in the optical axis direction by changing the moving amount of the slider are provided. It is a thing.

Therefore, according to the present invention, it is possible to adjust the position of the holder in the optical axis direction by changing the amount of movement of the slider that is in contact with the holder, and to lock the holder after the adjustment is completed. Therefore, it is not necessary to separately provide a flange back adjustment mechanism and a lock mechanism, and it is not necessary to use a dedicated member (adjustment ring or the like) for flange back adjustment.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to an image pickup device, for example, in a video camera using an image pickup device of CCD type, MOS type, etc. It is suitable for adjusting the axial distance (flange back distance). Of course, the invention is not limited to being applied to a video camera, but can be applied to a still camera or various types of devices capable of shooting moving images and still images.

As described above, if the flange-back adjusting mechanism and the locking mechanism of the image pickup device are independently configured, there is a problem in workability. Therefore, in the present invention, only the adjusting member (adjusting screw or the like) is operated. With this configuration, the flange back adjustment and the locking operation can be performed at the same time to simplify the operation at the time of adjustment, and the flange back adjustment can be performed without using the adjustment ring. The degree of freedom can be improved.

1 to 4 show the overall appearance of an image pickup apparatus 1 when the present invention is applied to a surveillance CCD camera. FIG. 1 is a front view, FIG. 2 is a plan view, and FIG.
Is a side view and FIG. 4 is a bottom view. 2 to 4, the P-axis indicated by the alternate long and short dash line represents the optical axis of the image pickup system.

The outer casing of the image pickup apparatus 1 comprises a front panel 2, a camera case 3 and a rear panel 4. There is a form in which it is integrally formed by aluminum die casting or the like, or a form in which a chassis such as a die casting part is built in and a mold cover made of resin is covered with the chassis. In this example, in the latter form, the front panel 2, The camera case 3 and the rear panel 4 on which the connector is arranged constitute an outer casing as separate members.

A lens mount portion 5 is provided on the front panel 2.
And a circular lens mount surface 5a (a flat surface at the front end of the lens mount portion 5) is formed around the optical axis P so as to be orthogonal to the optical axis P. A lens mounting portion 6 is provided on the inner circumference of the portion 5 as shown in FIG. The lens mounting portion 6 is formed with a screw hole for mounting a lens (not shown) or the like.

A flange back adjustment mechanism is incorporated in the front panel 2 in order to adjust the flange back distance according to the type of lens (C mount lens, CS mount lens, etc.) attached to the lens mount surface 5a. In terms of appearance, as shown in FIG. 3, the adjusting member 7 (adjusting screw in this example) that constitutes the adjusting mechanism is only provided on the outer surface of the front panel 2. That is, since the adjustment ring is not used in this example, the member does not appear in the appearance.

FIGS. 5 and 6 show an example of the structure of the flange back adjustment mechanism. FIG. 5 is an exploded view seen from the top, and FIG.
Is an exploded view seen from the side. The X-axis indicated by the double-headed arrow in FIG. 5 is one of the two axes set in the plane orthogonal to the optical axis P and extending in the plane of the drawing (horizontal axis in this example). Is represented.

As shown in the figure, the front panel 2 is composed of a front cover portion 2a and a portion 2b including the lens mount portion 5.

The front cover portion 2a is integrally formed with a frame-shaped portion and a portion projecting from the side to the rear (the portion 2b side), and the side surface is shown in FIG. A circular hole 8 is formed as shown.

Further, the portion 2b of the front panel 2 is
As shown in FIG. 6, a mounting piece 9 for the adjusting member 7 is integrally provided at the center of the side surface portion, and a screw hole is formed in the mounting piece.

On the rear side of the front panel 2 (on the right side of the drawing), a pressure bonding means 10 and a holder 12 for holding the image pickup device 11 are arranged. In this example, a CCD (charge coupled device) type area image sensor is used as the image pickup device 11. Further, the holder 12 is made of synthetic resin or the like, and the image pickup device 11 is mounted on the substrate 15 and
The optical filter 17 arranged in front of the light receiving surface of the image pickup device 11 is adapted to be attached to the holder 12 via the seal rubber 16 (the image pickup device 11 includes a substrate 15,
The seal rubber 16 and the optical filter 17 are integrated into the holder 12 as one body. ). And the crimping means 10
Are required to bring the holder 12 into contact with a slider described later, and in this example, a coil-shaped compression spring is used.

A slider 13 made of synthetic resin and a holding plate 14 made of sheet metal are arranged behind the holder 12 holding the image pickup device 11 and the like.

The slider 13 is configured to be in contact with the holder 12 and positioned between the holder 12 and the pressing plate 14 so as to be movable in the X direction. Is provided with a compression spring 20, and a guard 18 is attached to the other end.

The pressing plate 14 serves as a locking member for the slider 13 and constitutes a mechanism for movably holding the slider 13 in a plane orthogonal to the optical axis. The holding plate 14 is attached and fixed to the portion 2b of the front panel 2 by using a fastening member such as a screw.

A locking member 19 for the mounting member 9 of the adjusting member 7 is provided, which is a locking member for the adjusting member and is made of synthetic resin or the like. Will be described later.).

In this structure, the pressure-bonding means 10, the holder 12 (including the image pickup device, etc.) and the slider 13 are assembled in this order from the side closer to the portion 2b in the front panel 2, and the pressing plate 14 is attached to the front panel. 2 (part 2b)
It is fastened with a screw member.

FIG. 7 shows an example of the structure of the holder 12. The left side is a front view, the right side is a side view, the right side is a rear view, and the bottom view is a bottom view (partially). Is shown in cross section). Incidentally, P indicated by an arrow on the side view and X indicated by an arrow on the rear view correspond to the respective axes described in FIGS. 5 and 6.

As can be seen from the front view, the resin holder 12 has a circular disk portion 12A, and a window portion 12B for receiving light of the image pickup device 11 is formed in the center portion thereof. Then, as shown in the rear view, a rectangular portion 12C having a rectangular shape is integrally formed on the back side of the disc portion 12A.

In the holder 12, an annular recess 12D for receiving the end of the crimping means 10 is formed on the side where the window 12B is formed. The rear end side of the rectangular portion 12C is the mounting surface side (the side in contact with the slider 13) of the image sensor or the like, and a plurality of inclined portions (or inclined surface portions) 21, 22, 23 are formed in substantially the same shape. Has been done.
The inclined portion 21 is located on the disk portion 12A, and the remaining inclined portions 22 and 23 are located at two corners farther from the inclined portion 21 of the four corners of the rectangular portion 12C (in the rear view, respectively). The inclined portion 22 is formed below, and the inclined portion 23 is formed above. Further, the slopes formed on the respective inclined portions are inclined from the upper right to the lower left in the bottom view.

FIG. 8 shows an example of the structure of the slider 13, which is a plan view above the front view and a side view to the right. The meanings of X indicated by an arrow below the front view and P indicated by an arrow on the left side of the side view are as described above.

The slider 13 has a substantially rectangular frame shape, and on the side facing the holder 12, the inclined portions 21 to 2 are provided.
Abutting portions 24 to 26 are provided at positions corresponding to the respective Nos. 3 and 3. That is, in the front view, the slider 1
An abutting portion 24 is formed on the lower side portion of the slider 3 at a position closer to the left end, and an abutting portion 25 is formed on the upper side portion of the slider 13 at a position closer to the left end.
Is formed in the center of the right side portion of the slider 13. The contact portion 24 corresponds to the inclined portion 22,
The contact portion 25 corresponds to the inclined portion 23, and the contact portion 26 corresponds to the inclined portion 21, and each contact portion has an arc surface having a predetermined curvature as shown in the plan view. Are formed in each. Therefore, when each contact portion and the corresponding inclined portion contact each other, they have a line contact relationship.

A plurality of guide portions 27, 27, ... Are provided on the back surfaces of the upper and lower sides of the slider 13. For example, in the present example, each guide portion is integrally formed as a key-shaped locking piece and arranged at four locations (two are provided in each of the upper side portion and the lower side portion). Each guide portion is formed by being protruded toward the holding plate 14 side and being bent in an L shape.

In the front view, the right side portion of the slider 13 is integrally formed with a protruding portion 13A which faces the right side in the figure. This portion is provided by the adjusting member 7 via the guard 18 in the X direction. It is designed to be pressed along.

FIG. 9 shows an example of the structure of the presser plate 14, which is a plan view above the front view and a side view to the right. The meanings of X indicated by an arrow above the front view and P indicated by an arrow on the left side of the side view are as described above.

The holding plate 14 is a thin plate and has a square hole 14a. .. corresponding to the guide portions 27 of the slider 13 are formed at four locations corresponding to the number of the guide portions 27, 27 ,.
That is, the sliders 13 are slidably attached along the X direction by engaging the respective guide portions 27 with the corresponding guide edges 28.

In this example, the slider 13 and the holding plate 14 are
In consideration of the improvement of workability in the case of combining with
, 29, ... Are provided respectively. That is, since each escape recess 29 is formed as a recess adjacent to the guide edge 28 and recessed from the guide edge, the guide edge 28 side (the left side in the front view) after passing each guide portion 27 through the escape recess 29. Slide the slider 13 to the holding plate 1
4 can be easily attached and integrated.

A plurality of mounting recesses 30, 30, ... Are formed at predetermined intervals at both left and right ends of the holding plate 14, and these are used to screw the holding plate 14 to the front panel 2 by a screw member. (The screws 33 and 3 in FIGS. 10 and 11)
See 3 ... ) Is formed as a notch portion used when fastening.

FIGS. 10 and 11 show a state in which the above-mentioned members are attached to the front panel 2, and show the assembled state of the flange back adjustment mechanism.
10 shows a view seen from the back side, and FIG. 11 shows a main part of the configuration seen in a plane (X and P indicated by arrows in the figure).
Has the same meaning as described above, but X1 and X2 shown in FIG.
In the above, the directions in the X-axis direction are respectively expressed, and the direction indicated by X1 is defined as the left side and the direction indicated by X2 is defined as the right side. ).

While the pressing plate 14 is attached to the front panel 2, the crimping means 10 and the holder 12 are located between them, and the crimping means 10 is provided between the front panel 2 and the holder 12. It is held in a properly compressed state.

Regarding the contact relationship between the holder 12 and the slider 13, the inclined portions 21 to 23 of the holder 12 are
And the contact portions 24 to 26 of the slider 13 are in contact with each other. In each drawing, the contact position is shown as contact points 32, 32, ... Shown by black circles.

As described above, the slider 13 is attached to the holding plate 14 so as to be movable in the X direction by engaging the respective guide portions 27 with the respective guide edges 28 of the holding plate 14. The holding plate 14 is fixed to the portion 2b of the front panel 2 by fastening with a screw member. Therefore, the holder 12 and the slider 13 are constantly pressed against the pressing plate 14 by the elastic force of the crimping means 10.

A pressing force by the adjusting member 7 is applied to the protrusion 13A of the slider 13 via the guard 18, and the compression spring arranged on the side opposite to the protrusion (X1 side in FIG. 11). The slider 13 slides against the elastic force of 20 (the compression spring 20 is arranged on the same axis as the adjusting member 7 in the X direction, and is appropriately compressed between the front panel 2 and the slider 13). It is in a state that has been.).

Further, guides 31, 31, ... (See FIG. 11) are integrally formed in the front panel 2 at a plurality of positions, and the side edge portions of the holder 12 are positionally regulated by these, so that The holder 12 is restricted in its moving direction, and can be moved only in the direction of the optical axis P against the elastic force of the crimping means 10.

Next, the operation of the flange back adjustment mechanism will be described.

The slider 13 is supported so as to be movable only in the X direction by the engagement relationship with the pressing plate 14 fastened to the front panel 2 (see the guide portion 27 and the guide edge 28).

The guard 18 made of metal is protected by fitting it into the protruding portion 13A of the slider 13, and the guard 18 is tightened by tightening the adjusting member 7 (adjusting screw) attached to the mounting piece 9 of the front panel 2. When a force is applied in the X direction via the slider 13, it becomes possible to move the slider 13 stably along the X direction.

When the adjusting screw is rotated in the tightening direction, the screw itself moves in the thrust direction (X1 direction in FIG. 11), so that the slider 13 moves in the X1 direction by the thrust force generated by tightening the screw. When the adjusting screw is rotated in the loosening direction, the screw moves in a direction away from the slider 13. At that time, the thrust force in the X direction or the compression spring 20 due to the pressing force of the crimping means 10 is applied. The elastic force of
Move in two directions.

Next, the relationship (contact relationship) between the holder 12 and the slider 13 at each of the contact points 32 will be described with reference to FIG.
2 will be described (all three contact points are the same, so only one of them is shown in the figure).

First, on the slider 13, the thrust force F generated when the adjusting screw is tightened acts on the slider. That is, the thrust force F in the X direction is applied to the contact points between the inclined portions (21 to 23) and the contact portions (24 to 26), but the thrust force F acts on the holder 12. F1 and F2 are shown in the lower left. In addition, F
1 indicates the component in the normal direction V related to the slope of the inclined portion, and F2
Indicates a component in the P direction (optical axis direction).

The slider 13 and the holder 12 are in contact with each other at the inclined portion and the contact portion, and the thrust force F acts on the holder 12 as a normal component (vertical component) F1 of the inclined surface. However, since the holder 12 is limited by the plurality of guides 31, 31, ... (See FIG. 11) so as to be movable only in the P direction, the component F obtained by projecting F1 in the optical axis direction is indicated.
2 will act on the holder 12. The optical axis direction component F2 acts as a force against the elastic force of the crimping means 10, and when the magnitude of F2 exceeds the magnitude of the elastic force, the holder 12 mounts the lens along the optical axis direction. Surface 5
Move toward a.

Here, the movements of the holder 12 and the slider 13 will be described in three states (states 1 to 3) by using an enlarged view near the contact point 32 shown in FIG. In the drawing, the guide 31 formed on the front panel 2 is conceptually shown by a triangular symbol.

First, in the "state 1", the force F directed to the left in the drawing acts on the slider 13 by tightening the adjusting screw.
The distance between the slider 13 and the holder 12 at this time is "L1".
And

Since the moving direction of the slider 13 is restricted to the X direction, the force F causes "ΔX
It moves for a distance of 12 "and stabilizes in" State 2 ". At that time, the contact point 32 between the slider 13 and the holder 12 moves on the inclined surface, and the holder 12 is moved in the P direction. When the distance between the slider 13 and the holder 12 at this time is described as "L2", the movement amount from the state 1 to the state 2 is "L2".
2-L1 ".

When the force F is further applied to the slider 13, the contact point 32 continues to move on the inclined surface, and the slider 13 moves along the X direction with reference to the state 1 as "ΔX1".
In the “state 3” moved by “3”, when the distance between the slider 13 and the holder 12 is described as “L3”, the holder 12 is finally moved by “L3-L1”.

On the contrary, when the adjusting screw is returned from the "state 3" in the loosening direction, the slider 13 is pressed by the pressure-bonding means 1.
0, the elastic force of the compression spring 20 tries to return to the “state 1”, and the holder 12 is also pressed by the slider 13 by the elastic force of the crimping means 10, so that the contact point 32 moves on the inclined surface. While moving in the opposite direction to the above description, the state returns to "state 2" and "state 1".

The front panel 2 is provided with a locking portion for the movement of the slider 13, and the abutting portions (24 to 26) of the slider 13 are dislocated from the inclined portions (21 to 23) of the holder 12. The movement amount is limited so that the contact portion and the inclined portion are always in contact with each other.

As described above, by turning and tightening the adjusting screw, the holder 12 is moved along the optical axis direction toward the lens mount surface 5a through the movement of the slider 13, and conversely, the adjustment is performed. A mechanism is established in which the holder 12 moves away from the lens mount surface 5a in the optical axis direction as the screw is loosened.

In this example, the inclined portion inclined with respect to the plane orthogonal to the optical axis is formed on the holder 12 side in the portion where the holder 12 and the slider 13 contact each other. It may be formed in the same manner.
That is, in the form in which the inclined portion is formed on the slider, the contact portion corresponding to the inclined portion may be formed on the holder. Further, the abutting portion between the holder 12 and the slider 13 is not limited to three places, but can be set in a plurality of places as needed, and the angle and curvature of the inclined surface and the abutting surface can be set. Is not subject to strong restrictions, so it is possible to design relatively freely.

Finally, the loosening prevention mechanism of the adjusting member 7 will be described. In this example, a loosening stopper 19 for the adjusting member 7 is provided, and both of them constitute a mechanism for adjusting and locking the position of the holder 12 in the optical axis direction by changing the moving amount of the slider 13. There is.

FIG. 14 shows an example of the structure of the loosening prevention member 19. The side view is arranged on the front view shown in the center, and the portion indicated by a circle in the front view is enlarged to show its operation. This figure is shown below the front view.

The loosening prevention member 19 is formed into a crank shape by using a material having high elasticity such as a synthetic resin, and the hole 34 is larger than the shaft diameter of the adjusting member 7 (screw shaft portion of the adjusting screw). It has a slightly smaller hole diameter. A slit 35 continuous with the hole 34 is provided in a part of the hole 34. In addition, in the opening portion of the hole 34,
A slightly tapered surface is formed to facilitate engagement of the adjusting screw.

As shown in FIGS. 10 and 11, the loosening prevention member 19 is installed near the attachment piece 9 provided on the front panel 2. Then, the screw member, which is the adjusting member 7, is passed through the circular hole 8 of the front cover portion 2a, then inserted through the hole portion 34 of the loosening preventive member 19, and then screwed into the screw hole formed in the mounting piece 9. The tip portion of the adjusting screw is brought into contact with the guard 18 attached to the protruding portion 13A of the slider 13, so that the hole portion 34 is constantly pushed and expanded by the outer diameter of the screw shaft portion of the adjusting screw. And keep this state. for that reason,
An elastic force is generated by the material (synthetic resin), and the adjusting screw constantly receives a frictional force due to the elastic force for preventing loosening. Further, as described above, when the adjustment screw is turned in the loosening direction, the crimping means 10 and the compression spring 2 that generate the moving force of the slider 13 (pressing force to the adjustment screw).
Due to the action of 0, the adjusting screw receives a frictional force with the slider 13.

As described above, since the frictional force (resistive force) always acts on the adjusting member 7, this exerts the effect of preventing the member from loosening as a load force.

The loosening prevention mechanism for the adjusting member is not limited to the loosening preventing pressure-bonding member or the engaging member formed of synthetic resin or the like. For example, a pressure-bonding mechanism (or pressure contact mechanism) for the adjusting member may be used. Similar loosening prevention effect can be obtained by providing the compression screw or by inserting the compression coil spring into the screw shaft of the adjusting screw. Further, the present invention is not limited to this example, and various forms such as a configuration in which the front panel attachment piece and the loosening prevention member are arranged in this order with respect to the adjustment screw and the tip of the screw is brought into contact with a part of the slider can be implemented. It is possible.

As described above, by rotating the adjusting screw, the position of the holder 12 on the optical axis, that is, the position of the image pickup device 11 in the optical axis direction, and the locking operation thereof can be performed at the same time. As described above, the lock operation independent of the adjustment operation is unnecessary, and the image sensor can be fixed at a stable position.

Therefore, the following advantages can be obtained from the above-described structure.

When adjusting the flange back distance,
Since the operation for releasing the lock mechanism and the lock operation can be made unnecessary, the workability can be greatly improved.

As in the conventional case, the device can be designed without being obsessed with the design configuration in which the adjustment ring is exposed on the exterior of the device, and only the head of the adjustment screw appears on the exterior. The degree of freedom in design can be improved.

Since the disk-shaped adjusting ring is not required, it is possible to greatly contribute to the miniaturization of the external size of the set itself (as can be seen from the comparison with FIGS. 3 and 17, the adjusting ring is shown). Therefore, the length in the optical axis direction of the front panel portion can be shortened.
The downsizing of the device is advantageous in that the wiring connected to the device can be freely routed and the installation space can be reduced.

Since the hole for exposing the adjustment ring to the outside of the apparatus is not necessary, the dustproof property is improved.

Since the lock mechanism built in the device has a very simple structure, it is possible to reduce the number of parts and costs and improve productivity.

[0076]

As is clear from the above description, according to the first aspect of the invention, the movement amount of the slider abutting on the holder of the image pickup device is changed so that the holder moves in the optical axis direction of the holder. Since the position of can be adjusted and it can be locked after the adjustment is completed, there is no need to provide a flange back adjustment mechanism and a lock mechanism separately.
The configuration is simplified. Further, since it is not necessary to use a dedicated member (adjustment ring or the like) for adjusting the flange back, the number of parts can be reduced and the influence of the member on the appearance of the device can be eliminated, and the degree of freedom in design is high. .

According to the second aspect of the present invention, the operation can be simplified by providing the adjusting member as a member for both the flange back adjustment and the lock. For example,
If a screw member is used as the adjusting member, the operation is simple because it is only necessary to adjust the tightening amount.

According to the third aspect of the present invention, by providing the loosening prevention mechanism for the adjusting member, it is possible to reliably lock the adjusting position so that the adjusting position is not inadvertently displaced due to an impact on the device.

The invention according to claim 4 is effective for simplifying the mechanism and reducing the number of parts and cost.

[Brief description of drawings]

FIG. 1 is a diagram showing an appearance of a configuration example of an apparatus according to the present invention, together with FIGS. 2 to 4, and is a front view.

FIG. 2 is a plan view.

FIG. 3 is a side view.

FIG. 4 is a bottom view.

FIG. 5 shows an example of the flange back adjustment mechanism according to the present invention together with FIG. 6, and this figure is an exploded view seen from a plane.

FIG. 6 is an exploded view seen from the side.

FIG. 7 is a diagram showing a configuration example of a holder of an image pickup device.

FIG. 8 is a diagram showing a configuration example of a slider.

FIG. 9 is a diagram showing a configuration example of a holding plate.

10 is a view showing a state in which the flange back adjusting mechanism according to the present invention is incorporated in a front panel together with FIG. 11, and this figure is a view seen from the back side.

FIG. 11 is a diagram showing a main part as seen from a plane.

FIG. 12 is a diagram for explaining a pressing force acting on a contact portion between a slider and a holder.

FIG. 13 is a diagram for explaining relative movement between a slider and a holder.

FIG. 14 is a diagram showing a configuration example of a loosening stopper for an adjusting screw.

FIG. 15 is a view showing an external appearance of a conventional configuration example, together with FIGS. 16 and 17, and is a front view of this figure.

FIG. 16 is a plan view.

FIG. 17 is a side view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Imaging device, 5a ... Lens mount surface, 7 ... Adjustment member, 10 ... Crimping means, 11 ... Imaging element, 12 ... Holder,
13 ... Slider, 19 ... Loosening prevention, 21, 22, 23 ...
Slope

Claims (4)

[Claims] 1. An image pickup apparatus configured to be capable of adjusting a distance of an image pickup element with respect to a lens mount surface in an optical axis direction, and a holder for holding the image pickup element and abutting the holder. A slider and a crimping means for bringing the holder into contact with the slider are arranged, and an inclined portion inclined with respect to a plane orthogonal to the optical axis is provided at a portion where the holder comes into contact with the slider. A mechanism that is formed on the slider and holds the slider movably in a plane orthogonal to the optical axis, and the amount of movement of the slider is changed to adjust the position of the holder in the optical axis direction and lock the holder. An image pickup apparatus, which is provided with a mechanism. 2. The image pickup device according to claim 1, wherein an adjusting member for changing a moving amount of the slider according to an operation amount and locking the slider at the adjusted position is provided on a side surface of the outer casing. An imaging device characterized by the above. 3. The image pickup device according to claim 2, further comprising a locking mechanism for the adjusting member. 4. The image pickup device according to claim 3, wherein a screw member is used as the adjusting member, and a loosening stopper engaged with the screw member is provided.