JP3568375B2 - Photo head - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a photographic head in which a lens position of a camera does not move when a small camera mounted on a camera base and using a film having a different vertical and horizontal size uses a film in different directions.
[0002]
[Prior art]
FIG. 7 shows a conventional two-way or three-way camera (a camera capable of adjusting the tilt direction X, the swing direction Y, and the tilt direction Z) of a small camera, which is mounted on a camera platform. Perform as shown. That is, when changing the orientation for the horizontal size photography shown in FIG. 7A to the orientation for the vertical size photography shown in FIG. 7B, the fixing screw of the pan bar 3 for tilting the camera base 1 of the camera platform 1 is used. 4 is released, the camera base 1 is tilted 90 degrees around the tilt axis 2 (tilt direction Z), the direction of the camera base 1 is set by setting the direction of the small camera to the vertical size shooting, and tightening the pan stick 3 for tilting. Had changed. A general small camera is provided with a lens just above the tripod fixing screw of the camera.
[0003]
Therefore, it is desirable that tilt tilt can be performed on an axis crossing the lens optical axis.
[0004]
[Problems to be solved by the invention]
In the above-mentioned conventional technology, a small camera is provided directly above the tripod stand 5 when shooting in the horizontal size, and is stable. However, when the camera direction is changed for vertical size shooting, the optical axis of the camera becomes the tripod stand 5. Sideways off the center. At this time, the camera loses stability, and when a heavy lens such as a telephoto lens is mounted, there is a risk that the tripod may fall and the camera shakes easily. In close-up photography such as portrait photography or copying / close-up photography, it is necessary to move the entire tripod to correct the lateral displacement of the optical axis of the camera lens 6. In addition, it is necessary to adjust the height of the tripod for vertical displacement. A shift has occurred in the vertical and horizontal directions due to the direction change from FIG. 7A to FIG. 7B.
[0005]
It is an object of the present invention to improve such a problem and to provide a photographic pan head in which the optical axis of the camera is not shifted even when the direction of the camera is changed for vertical and horizontal size photographing. More specifically, the camera base (including the tilt operating means and the camera base L) set for vertical size shooting is rotated by 180 degrees in the swing direction X, and the camera base is tilted by 90 degrees in the tilt direction Z. An object of the present invention is to provide a photographic head in which the center of the camera lens does not move left and right and up and down even if the orientation of the camera lens is changed vertically and horizontally.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, a photographic head of the present invention is a photographic head capable of adjusting the angle of a camera mounted on the camera base in each of a tilt direction, a swing direction, and a tilt direction. A swing axis for adjusting the angle in the swing direction is rotatably mounted, and an inclination axis for performing the angle adjustment in the inclination direction is rotatably mounted in a direction perpendicular to the swing axis. A swing base, a camera base connecting part provided coaxially with the tilt axis and rotating in the tilt direction, an overall L-shape, the camera is mounted on a horizontal plate part, and the upright part is the camera A camera base that is pivotally supported on the distal end side of the base connection part via a camera base rotation axis, and that can rotate around the camera base rotation axis to adjust the angle in the tilt direction in the camera direction for horizontal size shooting. , With A first and a second axis are coaxially mounted on the camera base, a camera fixing plate for mounting the camera is provided, and the first axis passes through the camera base and Means for fixing the camera fixing plate to the camera base, wherein the second axis penetrates the first axis and the camera fixing plate, and the first axis has a means for rotating or fixing the camera fixing plate to the camera base. Is provided on the second shaft, means for fixing the camera to the camera fixing plate is provided, and the camera fixing plate is rotatable in a state where the camera is fixed to the camera fixing plate. It is characterized by the following.
[0008]
Further, from the direction of the camera for vertical size shooting in which the center of the camera lens coincides with the swing axis, the camera base is rotated around the axis of the camera base rotation axis, and the camera lens is moved in the opposite direction to the subject. The camera base connecting portion is turned around the axis of the tilt axis from the state, and the axis of the second axis on the camera fixing plate in the state facing The intersection of a perpendicular drawn from the midpoint of a line connecting the axis of the second axis with the axis on the camera fixing plate in a state where the camera lens faces the subject, and the center line of the camera platform rotation axis. It is characterized in that it is configured to be the axis of the tilt axis.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0010]
(1st Embodiment)
FIG. 1 is a perspective view showing a photographic head according to a first embodiment of the present invention. The photographic head of this embodiment has a tripod mounting screw for attaching the photographic head to a tripod (not shown) on the bottom surface, and a connecting member 23 having a swing shaft 21 protrudingly formed on the upper surface. Has an L-shaped cross section, a horizontal plate portion is rotatably attached to the swing shaft 21, and a swing table 19 for adjusting the angle of the swing direction Y, and a tip R shape of an upright portion of the swing table 19. An inclined shaft 2 rotatably attached to the bent portion, an arm (camera base connecting portion 15) fixed to the inclined shaft 2 for adjusting the angle in the tilt direction Z, and the camera base connecting portion 15 An upright portion 1 'rotatably attached to the front end of the camera via a camera base rotation shaft 14 and a horizontal plate portion connected to the upright portion 1' are all formed in an L-shape. And a camera base 1 for adjustment. .
[0011]
The camera base 1 is bent in a substantially right angle at the upright portion 1 ′ and formed in a substantially L-shape, and an angle adjustment around the axis of the camera base rotation shaft 14 (horizontal size photographing) is performed by a camera base tightening knob 20 provided on a side surface. Angle adjustment in the tilt direction X at the time). The camera stand rotation shaft 14 has a screw portion on the distal end side, penetrates near the upright portion 1 ′, and is screwed to the camera stand connection portion 15 side. Further, a camera fixing screw 8 is provided on the tip side of the camera fixing knob 12, and the axis of the camera fixing knob 12 (camera fixing axis 12a = second axis) adjusts the angle in the tilt direction X at the time of vertical size photographing. It is rotatably mounted by passing through the center of a tilt fixing shaft 10 (= first shaft) which is a shaft, and further penetrates a camera fixing plate 9 so that a tip (camera fixing screw 8) protrudes from the surface thereof. ing. The tilt fixing shaft 10 penetrates the camera base bearing 11 and the camera base 1 and is fixed to the camera fixing plate 9. The rear end of the tilt fixing shaft 10 on the camera fixing knob 12 side is threaded, and a tilt fixing knob 13 is attached to the threaded portion so as to be screw-fastened. In the camera fixing plate 9, a cork material is adhered to the contact side with the camera 7, and the camera fixing plate 9 is configured to be fixed to the camera base 1 by screwing the tilt fixing knob 13. ing. In other words, it is a single-axis two-operation mechanism that performs two operations on the same axis (tilt fixed axis 10) (camera fixing operation by the camera fixing knob 12 and tilt operation by the tilt fixing knob 13 during vertical size photographing). In the vertical size photographing, the upright portion 1 ′ at the lower part of the camera base equipped with the one-axis two-movement mechanism can rotate 360 degrees around the axis of the camera base rotating shaft 14 fixed to the camera base connecting part 15. . Further, when the camera base 1 is turned 180 degrees to the left or right during vertical size shooting, the distance from the axis P of the inclined shaft 2 to the camera fixing screw 8 is set to be the same dimension, and the camera base is connected. The camera base rotating shaft 14 is screwed to the portion 15.
[0012]
The swing table 19 is configured to adjust the angle in the swing direction Y by a swing fixing knob 22 provided on the side end surface. The swing fixing knob 22 is provided so as to cut the split groove 19b on the swing base 19 in a state where the swing shaft 21 is rotatably mounted, and screw the split groove 19b. On the other side end surface of the swing table 19, the inclined shaft 2 is attached so as to be rotatable in a direction perpendicular to the swing shaft 21. Then, the split groove 17a is cut from the upper portion of the tilt bearing portion 17, and the split groove 17a is screwed from the tilt bearing portion 17 side with the tilt shaft fixing knob 18, so that the camera stand connecting portion coaxially fixed to the tilt shaft 2. It is configured to adjust the angle of the tilt direction Z set by the 15 rotations. In the present embodiment, in the direction of the camera for horizontal size photographing, the swing shaft 21 of the swing table 19 is positioned on a perpendicular line (on the center of the camera fixed shaft 12 a and the center of the tilt fixed shaft 10) lowered from the camera fixing screw 8. Are set to match. In this state, the swing shaft 21 is rotatably attached to the swing base 19, the split groove 19 b is cut in the swing base 19, and the swing fixing knob 22 is provided. It should be noted that a part (recess 19a) of the swing base 19 is depressed so that the camera base tightening knob 20 does not contact the swing base 19 when adjusting the angle in the tilt direction.
[0013]
In this embodiment, as shown in FIG. 2, when the center of the camera lens and the tripod mounting hole of the camera 7 are on a vertical line, the camera base connecting portions 15 and 15 ″ are connected to the tilt shaft 2 above the tilt bearing portion 17. Are set to be coaxial, and the centers of the camera base rotation axes 14 and 14 'are set to intersect with the center of the tilt axis 2. Now, in the direction of the camera for vertical size photographing, the tripod on the bottom surface of the camera 7 is set. The center of the camera fixing screw 8 'on the camera fixing plate 9' corresponding to the mounting hole (not shown) is "A", and the center of the camera lens is "O". The center of the camera fixing screw 8 on the camera fixing plate 9 corresponding to the tripod mounting hole (not shown) on the bottom surface of the camera 7 is "C", and the center of the camera lens is "O '". In the direction of the camera for shooting, The center of the camera fixing screw 8 "on the camera fixing plate 9" when the camera base 1 'is rotated by 180 degrees around the axis of the camera base rotating shaft 14' is "B." The center C of the camera fixing screw 8 for the camera for photographing is located on the center O of the camera lens for the camera for the vertical size photographing, and the center O and the center O of the camera lens for the camera for the horizontal size photographing. Further, in the present embodiment, a perpendicular line is drawn from the bisecting point D of the line segment BC, and the intersection point P with the center line of the camera platform rotation axis 14 (or 14 ') is set. This is set as the axis of the tilt axis 2. First, the camera base 1 'is rotated 180 degrees around the axis of the camera base rotation shaft 14' from the direction of the camera for vertical size shooting, and is set at the right end of the drawing. This In this case, the camera stand 1 'is attached to the camera stand 1 ", the camera fixing plate 9' is attached to the camera fixing plate 9", the camera fixing screw 8 'is attached to the camera fixing screw 8 ", and the camera stand connecting part 15 is connected to the camera base connecting part. 15 ". Further, when the camera stand connecting portion 15" is tilted 90 degrees to the left of the drawing around the axis of the inclined shaft 2 so as to face the camera for horizontal size photographing, the camera fixing screw 8 The center is located at C. When the line segment OC (= O′C) is extended downward, it is set so as to coincide with the center of the swing shaft 21 fitted to the swing table 19. When the center of the camera lens and the tripod mounting hole of the camera are displaced by about several mm, the camera base rotation axis does not move, and the tilt axis moves by the moving amount between the camera lens center and the tripod mounting hole. Just do it.
[0014]
Next, a method of changing the orientation of the camera for vertical size shooting to the orientation of the camera for horizontal size shooting and angle adjustment in the present embodiment will be described. At the time of vertical size photographing, as shown in FIG. 3, a tripod mounting hole (not shown) of the camera 7 is applied to the camera fixing screw 8 protruding from the camera fixing plate 9, and the camera fixing knob 12 is turned to attach the camera to the camera fixing plate 9. Close the bottom firmly and fix it completely. At this time, the center of the camera lens coincides with the center of the swing axis 21 as described above. Further, in the tilting operation, the screw of the tilt fixing knob 13 is loosened, the camera angle is determined by looking up / down at the subject, and then the tilt fixing knob 13 is screwed and fixed.
[0015]
Next, when shooting in the horizontal size, first, the camera stand tightening knob 20 is loosened from the direction of the camera for vertical size shooting, and the upright portion 1 ′ is rotated by 180 degrees around the axis of the camera base rotation shaft 14, and the camera base is fastened. Tighten the knob 20 to fix it. At this time, the camera lens faces in a direction opposite to the subject (front side in the drawing), and the center of the camera lens deviates from the center of the swing axis 21. In this state, the tilt fixing knob 13 is loosened, the camera 7 is rotated by 180 degrees, the camera lens is turned to the subject side, and the tilt fixing knob 13 is screwed and fixed to the camera fixing plate 9. Further, the tilt axis fixing knob 18 is loosened, the camera base connecting portion 15 is tilted 90 degrees in the swing axis direction, the camera base 1 is kept horizontal, and the tilt axis fixing knob 18 is screwed and fixed. In this way, as shown in FIG. 4, the camera 7 is in a shooting state in a horizontal orientation.
[0016]
In any case of the camera in the vertical and horizontal directions, when the screw of the swing fixing knob 22 of the swing table 19 is loosened, the swing table 19 rotates around the swing axis, and the camera 7 rotates the lens left and right on the swing axis. Swing action. As soon as the direction to the subject is determined by the swing operation, the swing fixing knob 22 is screwed and fixed. In the present embodiment, since the tripod mounting screw of the small camera is located almost directly below the center of the camera lens, when the camera orientation for vertical size shooting is changed to the camera orientation for horizontal size shooting, the camera lens can be mounted vertically or horizontally. The position is on the swing axis, and the movement of the object distance of the lens does not occur.
[0017]
(Second embodiment)
FIG. 5 is a perspective view showing a photographic head according to a second embodiment of the present invention, and FIG. 6 is a cross-sectional view showing a free head mechanism in the photographic head of the present embodiment. The photographic head of the present embodiment has a free head mechanism 30, and realizes the functions of the tilt axis 2, the camera base connecting part 15, the camera base rotation axis 14 and the like in the first embodiment with a simpler configuration. Things. The free head mechanism 30 is screwed to the upright portion 1 'with an upper upright fixing screw 25b, and covers a camera base rotating / tilting axis 25c having a camera base free ball 25a at a lower part, and the camera base free ball 25a. A dome-shaped case 26 having a camera base inclined groove 26a drilled along the tilt direction Z of the camera base 1, a support member 27 for supporting the camera base free sphere 25a, and the support member 27 being pressed into contact with the camera. And a camera base fixing lever 24 for stopping rotation of the base free sphere 25a, and the camera base fixing lever 24 has a convex part 24a that is asymmetrical with respect to its axis. Then, by turning the camera base fixing lever 24, the support member 27 is pressed against the convex part 24a, or the camera base free sphere 25a is rotatable in a non-contact state.
[0018]
In the present embodiment, the operation for setting the camera direction for vertical size photographing is performed by rotating along the camera base tilt groove 26a so that the camera base rotation tilt axis 25c is perpendicular to the swing table 19, By turning the fixing lever 24 to fix the camera platform rotation / inclination axis 25c, and further turning the upright portion 1 'around the axis of the camera platform rotation / inclination axis 25c, the center of the camera lens with respect to the subject repeats on the swing axis. This is done by setting The tilt function based on the orientation of the camera for vertical size photographing is performed by operating the tilt fixing knob 13. In order to change the orientation from the camera for portrait-size shooting to the camera for landscape-size shooting, loosen the camera fixing lever 24, rotate the camera base rotation tilt axis 25c by 180 degrees, and loosen the tilt fixing knob 13. The camera is rotated 180 degrees, facing the subject side, the tilt fixing knob 13 is tightened, the camera table rotation / tilting shaft 25c is tilted 90 degrees along the camera table tilt groove 26a, and the camera table fixing lever is positioned horizontally with the swing table 19. This is performed by rotating the camera stand 1 to fix the camera stand 1. The tilt function in the direction of the camera for horizontal size photographing is obtained by rotating the upright portion 1 'about the axis of the camera rotation tilt axis 25c. At the same time, the tilt operation of the camera base tightening knob 20 shown in the first embodiment is replaced with the operation of the camera base fixing lever 24. The swing operation in the direction of the camera for landscape size photographing is performed by the swing fixing knob 22 as in the first embodiment, and the tilt operation is performed by the free pan head mechanism 30. Therefore, a mechanism (two-way mechanism) for performing swing, tilt, and tilt operations at the time of shooting in both vertical and horizontal sizes is provided.
[0019]
【The invention's effect】
As described above, according to the present invention, the tilt fixed axis of the one-axis / two-operation mechanism crosses the optical axis of the camera lens so as to intersect. It is not necessary to re-operate the focusing in conjunction with the movement of the subject in the front-back direction, that is, the movement of the subject distance. In particular, it is most effective for photography at a short subject distance (close-up photography including portrait photography, especially close-up photography / enlarged photography).
[0020]
Also, according to the present invention, the center of the camera fixing screw in a state where the camera lens is turned 180 degrees about the rotation axis of the camera base from the direction of the camera for vertical size shooting and the camera lens is oriented in the opposite direction to the subject, and The vertical axis drawn from the midpoint of the line connecting the center of the camera fixing screw and the center line of the camera base rotation axis is the axis of the tilt axis. When changing from the shooting posture to the landscape orientation, the camera position after the operation in the horizontal orientation is changed to the camera lens position base point in the vertical orientation, and the subject is determined Even if the orientation is changed during shooting, there is an effect that the movement of the subject is not required, and the re-installation and the height adjustment of the tripod are not required in accordance with the movement of the tripod. Furthermore, when shooting with a camera equipped with a heavy lens such as a telephoto lens, the conventional pan head cannot place the lens directly above the tripod when shooting for any of the cameras. There is a danger of overturning and causing camera shake, but the present invention solves those problems.
[0021]
Further, according to the present invention, since the center of the swing axis coincides with the one-axis two-movement mechanism, the position of the lens in the vertical size and the horizontal size is on the swing axis, Even if the composition of the subject is changed by operation, there is no change in the angle of the optical axis with respect to the subject even when shooting in any of the vertical and horizontal sizes, so that the tripod does not need to be moved.
[0022]
Further, according to the present invention, the mechanism including the tilt bearing portion of the swing base, the camera base connecting portion, and the camera base rotating shaft is replaced with a free head, and the camera mounting screw of the free head is used to rotate the camera head of the upright part. By adopting a mechanism for screwing on the shaft, the same effect as described above can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a photographic head according to a first embodiment of the present invention.
FIG. 2 is a diagram illustrating a method of changing a camera orientation when shooting in a vertical and horizontal size on a photographic head according to the first embodiment of the present invention.
FIG. 3 is a diagram illustrating a camera orientation when shooting in vertical size on a photographic head according to the first embodiment of the present invention.
FIG. 4 is a diagram illustrating a camera orientation at the time of shooting in a horizontal size on a photographic head according to the first embodiment of the present invention.
FIG. 5 is a perspective view showing a photographic head according to a second embodiment of the present invention.
FIG. 6 is a sectional view showing a free pan head mechanism in a photographic pan head according to a second embodiment of the present invention.
FIG. 7 is a diagram showing a conventional method of changing the camera orientation when photographing vertically and horizontally in a photographic head.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Camera stand 2 Inclined axis 9 Camera fixed plate 10 Tilt fixed axis 12 Camera fixed knob 12a Camera fixed axis 13 Tilt fixed knob 14 Camera table rotating axis 15 Camera table connecting part 19 Swing table 21 Swing axis

Claims (2)

In the photographic head that can adjust the angle of each direction of the tilt direction, swing direction, tilt direction of the camera mounted on the camera base,
It has a substantially L-shaped cross section, and a swing axis for adjusting the angle in the swing direction is rotatably mounted, and the tilt axis for adjusting the angle in the tilt direction is rotatable in a direction perpendicular to the swing axis. Swing table attached to the
A camera stand connecting portion that is provided coaxially with the tilt axis and rotates in the tilt direction,
The whole is L-shaped, the camera is attached to a horizontal plate portion, and the upright portion is pivotally supported on the tip side of the camera base connecting portion via a camera base rotation axis, and around the camera base rotation axis. A camera base capable of adjusting the angle in the tilt direction in the camera direction for landscape size shooting by rotating,
A first and a second axis are coaxially mounted on the camera base, and a camera fixing plate for mounting the camera is provided. The first axis passes through the camera base and the camera Fixed to a fixed plate, the second axis penetrates the first axis and the camera fixed plate, and the first axis has means for rotating the camera fixed plate or fixing the camera fixed to the camera base. The second axis is provided with means for fixing the camera to the camera fixing plate, and the camera fixing plate is rotatable in a state where the camera is fixed to the camera fixing plate. A head for photography characterized by the following. By turning the camera base around the axis of the camera base rotation axis from the direction of the camera for vertical size shooting in which the center of the camera lens coincides with the swing axis, the camera lens is turned in the opposite direction to the subject. The camera base connecting portion is rotated about the axis of the second axis in the raised state on the camera fixing plate and the axis of the tilt axis from the state, and the camera lens is oriented in the direction of a camera for horizontal size photographing. The intersection of a perpendicular line drawn from the midpoint of a line connecting the axis of the second axis with the axis on the camera fixing plate in a state where the camera axis faces the subject, and the center line of the rotation axis of the camera base are inclined. The photographic head according to claim 1, wherein the head is configured to be the axis of the shaft.

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