JP3291796B2 - Mounting support for camera and optional lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting support for joining a camera and an optional lens, for example, a video camera and a telephoto lens, with their optical axes aligned without directly connecting them.

[0002]

2. Description of the Related Art Conventionally, when photographing at a high magnification with a video camera, for example, an optional telephoto lens is directly screwed into a lens screw of the video camera and mounted. An auxiliary stay for supporting the lens was mounted on a tripod to support the lens separately from the video camera.

[0003]

As described above, in the case of telephoto shooting with a video camera, an optional telephoto lens is screwed into a lens screw and attached as in the case of a still camera, and the video camera is integrated with the video camera. The weight and size of the telephoto lens are limited because of the heavy burden on the camera body, and high-power telephoto lenses cannot be used. There is a risk that the connection part and the lens barrel may be damaged just by receiving the video signal, and further, the weight of the video camera is increased, so that the degree of freedom of the photographing operation is impaired. SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. For example, a telephoto lens can be used for a video camera irrespective of weight and size, and a burden is imposed on a lens barrel and a focusing mechanism of the camera. It is an object of the present invention to provide a mounting support for a camera and an optional lens, which can use a telephoto lens without using the same.

[0004]

In order to achieve the above object, the present invention provides a main frame which is long in the front-rear direction, a lens mounting base slidable in the front-rear direction, and a camera slidable in the vertical and horizontal directions. A mounting support for the camera and the optional lens provided with the receiving pedestal, wherein the camera and the optional lens are separately mounted on the main frame,
An optical axis of a camera lens and an optional lens are aligned by sliding the camera receiving base, and the camera can be held in a state where the camera is abutted against an eye cup of the optional lens.

[0005] Further, the camera cradle allows the elevation angle to be changed by an adjusting member.

Also, a handle is attached to the main frame, and a tripod is attached to the main frame.

[0007]

The support for mounting the camera and the optional lens of the present invention thus configured is such that the camera and the optional lens are separately mounted on the main frame.
Slide the lens mount on which the optional lens is mounted in the front-rear direction, adjust the position so that the eyepiece side of the optional lens faces the objective lens side of the camera mounted on the camera mount, and abut it. The optical axes of the camera lens and the optional lens are aligned by sliding in the left and right direction.

In this optical axis alignment, the optical axis can be more accurately adjusted by adjusting the elevation angle of the camera receiving base.

When the handle is attached to the main frame, the camera and the optional lens can be carried without holding the camera and the optional lens directly, while maintaining the state where the camera and the optional lens are aligned and the optical axis is aligned.

Further, by mounting the main frame on a tripod, stable photographing can be performed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, 1 is a video camera as a camera, 2 is a lens unit, 3 is a lens frame, and 4 is an objective lens. Reference numeral 5 denotes a telephoto lens as an optional lens, 6 denotes an eyepiece, and 7 denotes an eyecup formed of a material having flexibility and elasticity such as an elastomer.

Reference numeral 11 denotes an entire mounting support for mounting the above-described video camera 1 and the telephoto lens 5 and supporting them in a joined state. Reference numeral 12 denotes a main frame which is long in the front-rear direction. The camera receiving base 13 to be mounted is slidable in the vertical and horizontal directions and the elevation angle is variable, and the lens mounting base 14 for mounting the telephoto lens 5 in the front half is slidably mounted in the front and rear direction. .

That is, in the illustrated example, the main frame 12 has a tripod seat 15 having a flat plate-like shape on the rear lower surface side and an inverted-L shape having a tripod screw hole and a positioning hole provided on the lower surface of the horizontal portion 15a. The camera receiving pedestal 13 is attached to a vertical portion 15 b of the tripod seat 15 via a movable adjustment mechanism 16.

The movable adjusting mechanism 16 has a hollow, substantially U-shaped horizontal rail guide 17 which is fixed to the rear surface of the vertical portion 15b of the tripod seat 15 laterally and rearward, and is hollow and has a longitudinally extending front side. Horizontal rail body 18 having guide window holes 18a
And a vertical rail guide 2 having the same shape as the horizontal rail guide 17 fixed to the rear surface side of the horizontal rail body 18 in the vertical direction and rearward.
A vertical rail main body 21 having a guide rail hole 21a in the front side in a longitudinal direction and having a hollow shape on the front side, and a vertical slide member 22 slidably fitted therein, and a rear surface 23a fixed to the rear surface of the vertical rail main body 21; On the side surface 23b of the angle support 23, the side surface 23b of which faces the one end surface of the horizontal rail guide 17, the shoe base 24 to which the camera pedestal 13 is fixed in an inverted L-shape on a horizontal surface 24a is mounted on the vertical surface 24b. And an elevating support member 25 that is attached to be rotatable in the front-rear direction.

The left and right sliding members 19 and the upper and lower sliding members 22 correspond to the horizontal rail guide 17 and the vertical rail guide 2.
Rail slides 17a and 20a are adhered to the inner peripheral surface side of 0, and the horizontal rail main body 18 and the vertical rail main body 21 are fitted through the rail slides 17a and 20a. Nut blocks 26 and 27 are incorporated in the horizontal rail main body 18 and the vertical rail main body 21 so as to be movable in the longitudinal direction, and feed screws 28 and 29 that are supported in the longitudinal direction by being spanned in the longitudinal direction are screwed together. The nut blocks 26 and 27 have step surfaces 26a and 27a on the front side thereof exposed from guide window holes 18a and 21a of the rail main bodies 18 and 21 and are fixed to the inner surfaces of the rail guides 17 and 20, respectively. One end of each of the screws 28 and 29 is protruded from the end face of the rail body 18 and 19, and the knobs 28a and 28
9a is attached.

When the knobs 28a and 29a are turned, the feed screws 28 and 29 are turned in the left and right sliding members 19 and the up and down sliding members 22 configured as described above. Since the nut blocks 26 and 27 to which the screws 28 and 29 are screwed are fixed to the rail guides 17 and 20, the rail guides 17 and 20 are fixed.
And 20 are slid.

Further, the elevation support member 25 is provided on the shoe base 2.
4 is pivotally supported by a fulcrum screw 30 on a side surface 23b of the angle support 23 at a vertical surface 24b thereof.
An arc-shaped rotation regulating hole 31 centered on the shaft support is formed at a position diagonally away from the shaft support, and an arc-shaped rotation center centered on the shaft support between the restriction hole 31 and the shaft support. A shaft hole 32 is formed, an engagement pin 33 protruding from a side surface 23b of the angle support 23 is inserted into the rotation regulating hole 31, and a knob 34a is attached to the outer end of the shaft hole 32 for raising and lowering. The screw 34 is loosely inserted and screwed to the side surface 23 b of the angle support 23.

When the elevation support member 25 constructed as described above is loosened by turning the stepping screw 34 for elevation with the knob 34a, the shoe base 24 is centered on the shaft support portion by the fulcrum screw 30 with respect to the angle support 23. The rotation range is a range in which both ends of the rotation regulating hole 31 are engaged with the engagement pins 33.

The shoe base 2 which can be rotated in this manner.
The shoe base 24 is fixed to the angle support 23 by tightening the stepping screw 34 via the knob 34a at the desired rotation position, that is, the elevation position.

The camera receiving pedestal 13 fixed to the shoe base 24, that is, the shoe is composed of a quick shoe 13a and a quick shoe adapter 13b. The quick show 13a has a camera screw 35 and a positioning pin 36.
Is installed, and a quick shoe adapter 1
3b is provided with a detachable lever 13c of the quick shoe 13a.

The shoe thus constructed is mounted by engaging the positioning pin 36 with the camera body and tightening the camera screw 35 in the same manner as the well-known shoe. The camera body is held by being fitted to the adapter 13b and locked by the detachable lever 13c.

A long guide hole 37 is formed in the front half of the main frame 12 where the lens mounting pedestal 14 is installed.
The lower surface side of the pedestal main body 14a has a shape corresponding to both sides from the upper surface of the main frame 12, and a pedestal sliding sheet is adhered to the lower surface side.
a is mounted on the main frame 12 in an inserted state.

A pedestal retainer 14b slidably contacting the lower surface of the main frame 12 is connected to the pedestal main body 14a via a long guide hole 37 so as to be capable of coming and coming from the pedestal retainer 14b.
A lens mounting screw 38 is inserted through the elongated guide hole 37 from the side to the pedestal main body 14a, and a positioning pin 39 is projected from the pedestal main body 14a.

The lens mounting base 1 constructed as described above.
4 is a guide slot 3 in the front half of the main frame 12.
In order to mount the telephoto lens 5 on the lens mounting pedestal 14, the lens mounting screw 38 is screwed into the screw hole with the engagement portion of the telephoto lens 5 engaged with the positioning pin 39. The telephoto lens 5 is fixed to the mounting pedestal 14 by tightening and the mounting pedestal 14 itself is also tightened by the lens mounting screw 37 to the pedestal holder 14b.
Are pressed against the lower surface of the main frame 12 and fixed to the main frame 12.

The mounting pedestal 14 can slide with respect to the main frame 12 even when the telephoto lens 5 is mounted, when the lens mounting screw 38 is not tightly tightened, so that the position of the telephoto lens 5 can be changed.

The main frame 12 has a handle 41.
Is installed. The main body 41a of the handle 41 is formed by bending a metal bar material into a forked shape in a substantially U-shape as viewed from the side, and a handle base 41b is fixed between the tips of the forked lower side portions. The parts are butted and elastic grips 41 made of rubber or the like are used.
c are fitted, on the lower surface side of the handle base 41b is formed in a width substantially equal to the recess 41b ₁ is the front-rear width of the main frame 12, the center portion being bored hole is.

The handle 41 thus constructed is attached to the rear half of the main frame 12 by a handle base 41b.
5 positioned above the horizontal portion 15a fitted in the recess 41b _1, the fixing by tightening screwed the handle mounting screws 42 inserted through the through hole into the screw hole of the main frame 12 side. A knob 42a is fixed to the upper end of the handle mounting screw 42.

Further, an accessory shoe adapter 43 is attached to the main frame 12. Adapter body 43 of this accessory shoe adapter 43
a is formed in a substantially L-shaped, the front end portion of the horizontal side portion has guide slots 43a ₁ are formed in the longitudinal direction, and portions of the vertical side portion side of the horizontal sides, the vertical side portion Hot shoes 43b and 43c are fixed to the horizontal bent portion at the upper end.

The accessory shoe adapter 43 is attached to the rear end of the main frame 12.
The adapter body 43a can be slid by tightening and fixing the shoe adapter set screw 44 by loosening the screw 44, and the hot shoes 43b, 43c The camera can be adjusted to approach or move away from the camera attached to the camera.

A front guard 44 is attached to the front end of the main frame 12 so as to be bent substantially in a substantially downward shape, and projects downward at the rear end, that is, at the lower end of the vertical portion 15b of the tripod seat 15. An under guard 45 is provided to protect the mounting screw 38 of the lens mounting base 14 and the movable adjustment mechanism 16 of the camera base 13.

Next, the video camera 1 is attached to the mounting support 11 for mounting the camera and the optional lens configured as described above.
The operation of attaching and supporting the telephoto lens 5 will be described.

First, the video camera 1 is moved to the camera receiving base 1.
Attach to 3. That is, as described above, the quick shoe 1
3a is mounted on the tripod mounting portion on the lower surface of the video camera 1 by tightening the camera screw 35. In this state, the quick shoe 13a is fitted to the shoe adapter 13b and locked and fixed by the detachable lever 13c.

In this state, the movable adjustment mechanism 16 is operated, so that the lens unit 2 of the video camera 1 has a predetermined height on the center line of the main frame 12, that is, the telephoto lens 5 attached to the main frame 12 as described later. Adjust so that it is located at a height that opposes in the axial direction.

In this adjusting operation, the position of the lens unit 2 on the center line of the main frame 12 in the left and right direction is adjusted by turning the feed screw 28 of the left and right sliding member 22 with the knob 28a.
, The feed screw 28 advances and retreats with respect to the nut block 26 fixed to the horizontal rail guide 17, whereby the horizontal rail main body 18 slides horizontally with respect to the horizontal rail guide 17, that is, in the horizontal direction. The horizontal rail guide 17 is fixed to the main frame 12 so that the horizontal rail
The camera pedestal 13 connected via the elevation support member 25 is moved left and right with respect to the main frame 12 so that the lens unit 2 of the video camera 1 is aligned in the left and right direction. When the feed screw 29 of the vertical slide member 22 is rotated by a knob 29a, the feed screw 29 moves forward and backward with respect to the nut block 27 fixed to the vertical rail guide 20. And
Accordingly, the vertical rail main body 21 slides vertically with respect to the vertical rail guide 20 fixed to the horizontal rail main body 18, and the camera receiving base 13 is moved up and down via the elevation support member 25. , The vertical alignment of the lens unit 2 is performed.

In the state where the video camera 1 is mounted on the main frame 12 and the lens portion 2 is aligned in this manner, the telephoto lens 5 is mounted on the lens mounting base 14 installed in the first half of the main frame 12. The lens is attached by the lens attaching screw 38 as described above. At this time, the tightening of the lens mounting screw 38 is weakened,
Are kept slidable with respect to the main frame 12.

In this state, the lens mounting base 14 is slid rearward with respect to the main frame 12 so that the eyecup 7 of the eyepiece 6 of the telephoto lens 5 is moved to the front end face of the lens unit 2 of the video camera 1, that is, the lens frame 3 Butted against the front edge of In this state, the telephoto lens 5 is fixed to the main frame 12 together with the lens mounting base 14 by strongly tightening the lens mounting screw 38. At this time, when the lens frame 3 of the lens unit 2 and the eyecup 7 of the eyepiece 6 are not closely contacted, the movable adjustment mechanism 16 is operated to adjust the left / right or up / down position of the video camera 1 as described above. ,
The elevation movement member 25 is operated to change the elevation angle.

The variable operation of the elevation angle of the elevation member 25 is performed as follows.
Turn the stepping screw 34 for raising and lowering by turning the knob 34a,
This is performed by rotating the shoe base 24 in the front-rear direction with respect to the angle support member 23 about a shaft support portion formed by the fulcrum screw 30.

After attaching the video camera 1 and the telephoto lens 5 to the main frame 12 in such a manner that the video camera 1 and the telephoto lens 5 are closely contacted with each other, the optical axis of the lens unit 2 of the video camera 1 and the telephoto lens 5 are aligned. I do.

This optical axis alignment is performed by operating the video camera 1 in a photographable state and setting the zoom on the camera side to the wide side so that the eyepiece 6 of the telephoto lens 5 is provided to the finder.
The outer periphery of the eyecup 7 looks like a round ring, and the state in which the circumference and the circle are located substantially at the center means that the optical axis is aligned. The position and the elevation angle of the video camera 1 are variably adjusted by adjusting the left and right sliding members 19, the up and down sliding members 22 and the raising operation member 25 of the adjusting mechanism 16.

As described above, when the video camera 1 and the telephoto lens 5 attached to the main frame 12 are attached to and detached from the tripod, or when the video camera 1 and the telephoto lens 5 are carried, the main frame 1 can be used without directly holding the video camera 1 or the telephoto lens 5.
2 is carried out by holding the handle 41 attached to the handle. When light illumination is used for photographing, a video light can be attached to the accessory shoe adapter 43 attached to the main frame 12.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and can be variously modified without departing from the gist of the present invention.

For example, the main frame is not limited to a plate shape, but can be formed of a rigid rod or tube, and the shape of each member can be arbitrarily changed.

Although a video camera is used as a camera and a telephoto lens is used as an optional lens, it goes without saying that a still camera, a wide-angle lens and the like can also be used.

[0045]

As described above, according to the mounting support for the camera and the optional lens according to the present invention, for example, when taking a telephoto photograph, the telephoto lens can be set immediately before the camera, and the photographing can be performed. It can be selected and used regardless of the type of telephoto lens. in this case,
Since the camera and the optional lens are not directly connected, there is no weight burden on the camera, and there is no risk of damaging the camera lens. In addition, the optical axes of the camera lens and the optional lens can be easily and accurately aligned, so that good images can always be taken.

[Brief description of the drawings]

FIG. 1 is a side view of an example of a mounting support according to the present invention in use.

FIG. 2 is a perspective view of an example of a mounting support according to the present invention.

FIG. 3 is a plan view of the same.

FIG. 4 is a rear view of the same.

FIG. 5 is an exploded perspective view of the main part, partially cut away.

FIG. 6 is an explanatory view showing a state in which a camera and an optional lens are joined when the mounting support according to the present invention is used.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Video camera 2 Lens part 3 Lens frame 5 Telephoto lens 6 Eyepiece 7 Eye cup 12 Main frame 13 Camera receiving pedestal 14 Lens mounting pedestal 15 Tripod pedestal 16 Movable adjustment mechanism 19 Left-right sliding member 22 Vertical sliding member 25 Elevation support Member 34 Elevating screw 41 Handle

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03B 17/14 G03B 17/56

Claims (4)

(57) [Claims] 1. A mounting bracket for mounting a camera and an optional lens on a main frame that is long in the front-rear direction, a lens mounting base slidable in the front-rear direction, and a camera receiving base slidable in the vertical and horizontal directions. Wherein the camera and the optional lens are separately mounted on the main frame, and the camera lens and the optional lens are optically aligned by sliding the camera receiving base, and the camera is mounted on the eye cup of the optional lens. A mounting support for a camera and an optional lens, characterized in that the camera and the optional lens are configured to be able to be held in a state where they are abutted against each other. 2. The mounting support for mounting a camera and an optional lens according to claim 1, wherein the camera cradle includes an adjusting member for changing an elevation angle. 3. The mounting support according to claim 1, wherein a handle is attached to the main frame. 4. The mounting support according to claim 1, wherein a tripod is mounted on the main frame.