JPH0659173A - Lens mounting device for video camera - Google Patents

Abstract

PURPOSE:To obtain an optimum photographing position in accordance with the physique of a user by providing an attaching member for mounting a lens barrel in a camera main body and a locking means for locking the lens barrel in a state where it is turned by an optional angle. CONSTITUTION:The lens barrel is fixed on a mount 1 by a screw 2 inserted through a long hole 1b, and further the calyx-like part of the camera main body and the calyx-like part 1a of the mount are meshed and a pin 3 for positioning is engaged in a groove for positioning to mount the lens barrel in the camera main body. By loosening the fixing screw 2 of the lens barrel, the lens barrel is turned with its optical axis as center, and by turning the lens barrel by a desired amount so that the screw 2 may be tightened again, the position of a grip provided in the lens barrel is freely changed. Namely, in the case a photographer can not tighten the underarm when he holds the grip part, the lens barrel (grip) is turned by a fixed angle, so that the fixing angle of the lens barrel to the camera main body is changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens mounting device for a video camera.

[0002]

2. Description of the Related Art Conventionally, there is a video camera used for data gathering by a photographer who carries it on his shoulder when he or she covers a television outdoors. In this type of video camera, a lens attached to the front of the camera body is used. The lens barrel is provided with a servo unit for performing zoom operations, and this servo unit also functions as a grip for holding the camera.The photographer carries the camera body on the shoulder and is provided on the lens barrel. Further, the servo unit is held as a grip and an image is taken. In order to prevent the camera from rocking back and forth and left and right and causing the image to be blurred, the photographer usually tightens his armpits and fixes his arm to take a picture.

Therefore, in such a conventional video camera, the mounting position of the servo portion as the grip is determined so that the photographer can naturally take the photographing position with the side closed as described above, and the servo portion is located at this position. Is provided.

The lens barrel is attached to the camera body through a bayonet mount 31, which is a mounting member for attaching the lens barrel to the camera body, as shown in FIG. 5, for example. A lens barrel having a lens 34a is fixed to a mount 31 with a plurality of screws 32. Further, a collar-shaped portion 31a formed on the bayonet mount 31 and a collar-shaped portion (not shown) provided on the camera body side. ) Are engaged with each other, and the positioning pin 33 provided on the mount side for preventing the engagement of these collar-shaped portions from shifting is aligned with the positioning groove provided on the camera side.

[0005]

In the conventional video camera, the lens is attached to the camera body by the above-described attachment structure, and the grip (servo portion) position of the lens barrel is adjusted so that the optimum photographing position can be taken. The decision is being made. However, when deciding the grip position as described above, the standard body type of the user and the length of the arm are assumed and the design is made so that the grip is uniquely easy to match with this. There are various body types of people who use cameras.

For this reason, depending on the user, when trying to take the photographing position in which the armpits necessary for the above-mentioned photographing are taken, the grip portion becomes far and the various switches provided on the grip portion can be sufficiently operated. There is a problem that it may not be possible or that the photographer may be forced to take a picture due to an unstable posture in which the armpit is open.

The present invention has been made to solve the problems in the conventional video camera as described above, and provides a lens for a video camera capable of taking an optimum photographing position regardless of the body shape of the user. The purpose is to obtain a mounting device.

[0008]

[Means for Solving the Problems] To achieve the above object,
A first invention of the present application is a video camera lens mounting device for fixing a lens barrel having a grip portion for holding a video camera to a camera body, wherein the lens barrel is attached to the camera body. A mounting member that is rotatably mounted about the optical axis of the lens, and locking means that locks the lens barrel in a state where the lens barrel is rotated at an arbitrary angle about the optical axis of the lens. Is characterized by.

A second invention of the present application is the first invention of the present application, characterized by further comprising storage means for storing a locking position of the lens barrel by the locking means. .

[0010]

According to the present invention, the lens barrel is mounted on the camera body through the mounting member, which is rotatable about the optical axis of the lens with respect to the camera body. To be attached to. Further, the locking means locks the lens barrel in a state of being rotated at an arbitrary angle about the optical axis of the lens.

Therefore, in the video camera equipped with the lens mounting apparatus according to the present invention, the lens barrel is rotated and locked according to the user, so that the person can take a picture with the side arm tightened. The grip part can be positioned so that the grip can be held exactly when the optimum position is taken.

Further, the storage means stores the locking position of the lens barrel by the locking means. For this reason, if the locking position of the lens barrel is stored in the storage means, even if the original user uses the camera again instead of the user, the original information can be easily read based on the stored information. It is possible to set the optimum grip position for the user of.

[0013]

Embodiments of the present invention will now be described with reference to the drawings.
FIG. 1 is an explanatory view showing the structure of a device for mounting a video camera lens according to a first embodiment of the present invention, and FIG. 2 is a view for explaining the operation of the embodiment.

As shown in FIG. 1, the mounting apparatus according to the present embodiment includes a bayonet mount 1 for fixing the lens barrel to the camera body, and this mount 1 is provided on the camera body and is not shown. Three collar-shaped parts 1 that mesh with the collar-shaped part
Further, a positioning pin 3 for forming the lens barrel is provided at a predetermined position to prevent misalignment of the collar-shaped portion by fitting in a positioning groove provided on the camera body side. Is provided.

Further, the mount 1 according to the present embodiment is provided with a long hole 1b formed in the peripheral portion thereof so as to extend in an arc shape in the circumferential direction around the optical axis of the lens barrel. A screw 2 for locking the lens barrel to the mount 1 is inserted through the elongated hole 1b.

In the mounting device according to the present embodiment having the above-mentioned structure, the lens barrel is fixed to the mount 1 by the screw 2 inserted through the elongated hole 1b, and the collar provided on the camera body. The flange portion 1a provided on the mount is engaged with each other, and the positioning pin 3 is engaged with the positioning groove, whereby the lens barrel is mounted on the camera body.

As described above, in this embodiment, since the lens barrel is fixed to the mount 1 through the elongated hole 1b,
By loosening the fixing screw 2 of the lens barrel, the lens barrel can be rotated about its optical axis. Therefore, by rotating the lens barrel a desired amount and tightening the fixing screw 2 again, the lens barrel can be rotated. The position of the grip provided on the lens barrel can be freely changed.

The operation of the present embodiment will be further described with reference to FIG. 2. As shown in the drawing, even if the photographer initially cannot hold his / her side when holding the grip portion, the lens barrel (grip portion) can be tightened. ) Is rotated by a certain angle θ to change the fixed angle of the lens barrel with respect to the camera body, so that it is possible to take a stable shooting posture in which the arm is brought into close contact with the body by tightening the armpit.

Further, a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is an explanatory view showing the configuration of the second embodiment of the present invention, and FIG. 4 is a sectional view taken along the line AA of FIG.

As shown in the figure, the mounting device according to the present embodiment is, similarly to the first embodiment, a collar-shaped portion 21a that meshes with a collar-shaped portion provided on the camera body, and is also provided on the camera body. The positioning pin 23 that engages with the positioning groove, and the long hole 21b that is formed so as to extend in an arc shape in the circumferential direction around the optical axis of the lens 24a in the lens barrel 24.
And a mount 21 having

In this embodiment, the mount 21
A position storing pin 25 is provided on the lens barrel 24, and a plurality of position storing grooves 24c that engage with the position storing pin 25 are provided on the lens barrel 24 at appropriate intervals in the circumferential direction of the lens barrel 24. ing.

For this reason, in the present embodiment, when adjusting the grip position, the position storing groove 24c with which the position storing pin 25 is engaged is appropriately selected and the groove is stored, so that the photographer can replace the original position again. Even when the photographer uses the camera, the optimum grip position for the original photographer can be immediately set by aligning the position storing pin 25 with the stored groove 24c.

Although the lens barrel is locked to the mount by the screw in the above-mentioned embodiment, the locking means between the lens barrel and the mount is not limited to this, and various types of locks can be used. Mechanical locking means can be used.

[0024]

As described above, according to the present invention, it is possible to adjust the position of the grip portion provided in the lens barrel, and it is possible to take an optimum photographing position for a user of any physique. It is possible to realize a video camera that can.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a first exemplary embodiment of the present invention.

FIG. 2 is a diagram for explaining the operation of the embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a second exemplary embodiment of the present invention.

4 is a cross-sectional view taken along the line AA of FIG.

FIG. 5 is a diagram showing an example of a conventional mounting device for a video camera lens.

[Explanation of symbols]

 1, 21, 31 Bayonet mount 1a, 21a, 31a Collar portion 1b, 21b Long hole 31b Counterbore hole 2, 22, 32 Screw 3, 33 Positioning pin 24 Lens barrel 4a, 24a, 34a Lens 24b Lens chamber 24c Position Memory groove 25 Position memory pin

Claims (2)

[Claims] 1. A mounting device for a video camera lens for fixing a lens barrel having a grip portion for holding a video camera to a camera body, wherein the lens barrel is attached to the camera body. A mounting member that is mounted so as to be rotatable about an optical axis, and locking means that locks the lens barrel in a state of being rotated at an arbitrary angle about the optical axis of the lens. Attaching device for video camera lens. 2. The apparatus for mounting a lens for a video camera according to claim 1, further comprising storage means for storing a locking position of the lens barrel by the locking means.