JPH07128723A - Camera system - Google Patents

Abstract

PURPOSE:To obtain a camera system permitting the attachment of an interchangeable lens and a camera main body having a different system from each other by operating a mode changeover switch setting the system constitution of a camera in the case of attaching the interchangeable lens in the camera main body, and enabling a photographer to recognize the present system constitution. CONSTITUTION:As for the interchangeable lens 2 capable of being attached to/detached from the camera main body 1; at least either of an inhibition means 22 inhibiting the attachment of the lens 2 in the main body 1 when the systems of the lens 2 and the main body 1 are not the same and a releasing means 25 releasing an inhibited state by the inhibition means is installed at one part of the lens 2, and their attachment is performed by releasing the inhibited state by the inhibition means by the releasing means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera system having an interchangeable lens which can be attached to and detached from a camera body. The present invention relates to a camera system in which a mode changeover switch for changing the system configuration (mode) of a camera is operated when the camera is mounted so that the mounting between the both is permitted and the current mode is displayed to the photographer.

[0002]

2. Description of the Related Art Conventionally, a camera system having a waterproof means capable of photographing underwater has been proposed in, for example, Japanese Patent Publication No. 3955/39.

According to this publication, a coupling portion exposed from the camera body to the outside so that water or the like does not enter from the outside, particularly in a camera in which the lens can be exchanged, a packing such as an O-ring is attached to the coupling portion between the lens barrel and the camera body. Is used to prevent water from entering and allow underwater photography.

[0004]

In the conventional camera system, when the system on the camera side and the system on the interchangeable lens side are not the same, for example, when photographing is performed by combining a waterproof lens and a non-waterproof camera, or vice versa. No measures were taken for shooting with the combination of the relations.

Generally, in an image pickup apparatus such as a camera, when an interchangeable lens and a camera main body which are different from each other in system are mounted, it is convenient to enhance the versatility of the lens and the camera if it is a system in which both of them can be mounted and photographed.

At this time, for example, when the waterproof lens is attached to the non-waterproof camera, the photographer is warned by some means that the current system configuration (mode) of the camera is not the waterproof mode, that is, the non-waterproof mode. Is necessary to improve operability.

However, in the conventional camera system, no such warning means is taken and the photographer must always be aware of the current system configuration of the camera. Therefore, it may not be clear what the system configuration of the camera is currently, and for example, shooting may be performed by misunderstanding the waterproof mode and the non-waterproof mode. There was a problem that it would end up.

According to the present invention, when mounting a camera body and an interchangeable lens whose systems are different from each other, first, the mounting of both is prohibited, and when mounting, the system configuration (mode) of the camera is set.
By providing a camera system capable of permitting mounting between the two and operating the mode selector switch for switching between the two and allowing the photographer to recognize what kind of system configuration the current camera system has. With the goal.

[0009]

[Means for Solving the Problems]

(1-a) The interchangeable lens of the present invention is an interchangeable lens that can be attached to and detached from a camera body, and when a system of the interchangeable lens is not the same as a system of the camera body, a part of the interchangeable lens should be mounted between them. At least one of prohibiting means for disabling and releasing means for releasing the prohibited state by the prohibiting means is provided, and by releasing the prohibiting state of the prohibiting means by the releasing means, mounting between the both is possible. It is characterized by having done.

(1-b) The camera body of the present invention is a camera body in which an interchangeable lens is attachable / detachable, and when a system of the camera body is not the same as a system of the interchangeable lens, a part of the camera body is interchangeable. At least one of a prohibiting means for disabling the mounting and a canceling means for canceling the prohibited state by the prohibiting means is provided, and the canceling state of the prohibiting means is canceled by the canceling means to mount the both. It is characterized by making it possible.

(1-c) The camera system of the present invention is a camera system having a camera body and an interchangeable lens detachable from the camera body, and when the interchangeable lens is attached to the camera body, the camera system When the system on the side of the interchangeable lens and the system on the side of the interchangeable lens are not the same system, a prohibiting means for prohibiting the mounting between the two is prohibited, and a releasing means for canceling the prohibited state by the prohibiting means. By releasing the prohibited state, the mounting between the both is permitted.

[0012]

1 and 2 are sectional views of the essential portions of Embodiment 1 of the present invention. FIG. 1 shows a state in which a waterproof camera 1 and a waterproof lens 2, which are the same system as the system of the camera body and the system of the interchangeable lens, are mounted. FIG. 2 shows a state in which the waterproof lens 2 and the non-waterproof camera 3 having different systems are mounted.

First, FIG. 1 will be described.

In FIG. 1, 1 is a waterproof camera (camera body), and 2 is a waterproof lens (interchangeable lens). Reference numeral 11 is an exterior member of the waterproof camera 1, and a groove 11 provided in a part thereof.
A waterproof O-ring 12 is fitted to a to prevent water and the like from entering. Reference numeral 13 denotes a mount on the waterproof camera 1 side, which is integrally fixed to the camera body 14, and has a bayonet claw portion 13a for bayonet coupling with a mount 21 on the interchangeable lens 2 side, which will be described later, and a protrusion as a prohibiting means described later. Groove 1 in which the pin (detection pin) 22 is inserted by the rotation angle when mounted
3b and.

The mount 21 on the waterproof lens 2 side is a fixed barrel 2
3 has a bayonet claw portion 21a for integrally connecting to the mount 13 on the waterproof camera 1 side, and a through hole 21b through which the protruding pin 22 penetrates.

The projecting pin 22 as a prohibiting means projects from the mount surface (adhesive surface) on the waterproof lens 2 side and is constantly urged toward the waterproof camera 1 side by the coil spring 24. When the system on the camera body 1 side and the system on the interchangeable lens 2 side are different from each other, the projecting pin 22 in the present embodiment acts as a prohibiting means for prohibiting mounting between the two.

Denoted at 25 is a releasing means, which comprises a mode changeover switch for releasing the prohibiting means 22 and is slidable with respect to the fixed cylinder 23. The mode changeover switch 25 has a groove 25a into which the projecting pin 22 is inserted, a click bold 26 and a click spring 27 to give a click feeling.
5b and.

The mode changeover switch 25 in this embodiment
For example, when mounting the interchangeable lens 2 on the camera body 1,
As will be described later, when the system on the camera body 1 side and the system on the interchangeable lens 2 side are different, the mode is set to the non-waterproof mode side, and the protrusion of the protrusion pin 22 serving as the prohibition means is released, whereby the camera body is closed. The mounting between the lens 1 and the interchangeable lens 2 is permitted. That is, it is also a switch (means) for switching the system configuration (mode) of the camera according to the mutual system of the camera body 1 and the interchangeable lens 2.

Next, a case where the system of the camera body and the system of the interchangeable lens in FIG. 2 are different from each other will be described. 2, the same elements as those shown in FIG. 1 are designated by the same reference numerals.

In FIG. 2, reference numeral 31 is an external member of the non-waterproof camera 3. A mount 33 on the non-waterproof camera 3 side is integrally fixed to the camera body 34, and has a mount 21 on the interchangeable lens 2 side and a bayonet claw 33a for bayonet coupling.

Next, the operation of mounting the camera body and the interchangeable lens will be described with reference to FIGS. 1 and 2.

First, in FIG. 1, a waterproof camera 1 and a waterproof lens 2 in which the camera body and the interchangeable lens are the same system.
In the case of wearing and, the mode changeover switch 25 of the waterproof lens 2 is set to the waterproof mode side which is its original function. At this time, since the protrusion pin 22 is restricted from moving back and forth in the optical axis A direction, the protrusion pin 22 is attached to the waterproof lens 2.
It always protrudes from the surface of the mount 21 on the side.

On the other hand, since the mount 13 on the waterproof camera 1 side is formed with the groove 13b through which the protruding pin 22 escapes at a position facing the protruding pin 22, the protruding pin 22 has the groove 13b.
This makes it possible to attach the waterproof camera 1 and the waterproof lens 2 to each other.

Next, in FIG. 2, when the non-waterproof camera 3 and the waterproof lens 2 having different systems are mounted, the mode changeover switch 25 of the waterproof lens 2 has a non-waterproof mode opposite to its original function. Is set to the side. At this time, since the protrusion pin 22 is allowed to move back and forth in the optical axis A direction, the protrusion pin 2 is attached to the surface of the mount 33 on the non-waterproof camera 3 side.
When 2 abuts, the projecting pin 22 escapes so as to enter the groove 25a of the mode changeover switch 25 against the bias of the coil spring 24, thereby enabling the waterproof lens 2 and the non-waterproof camera 31 to be mounted. .

In addition, the combination of the non-waterproof camera 3 and the waterproof lens 2 shown in FIG.
In contrast to the above, when the waterproof lens 2 is set to the waterproof mode side, when the waterproof lens 2 is attached to the non-waterproof camera 3, the protrusion 21 does not move forward and backward, and the mount 21 on the waterproof lens 2 side.
Mount 33 on the non-waterproof camera 3 side because it is more protruding
Will come into contact with. As a result, in this embodiment, the waterproof lens 2 and the non-waterproof camera 3 cannot be attached.

At this time, in this embodiment, as shown in FIG. 2, the mode changeover switch 25 is set to the non-waterproof mode side to release the projection of the projecting pin 22 as described above. While permitting the attachment of the waterproof lens 2, the current lens system configuration (mode) is displayed on the display part (not shown) of the waterproof lens 2 or the non-waterproof camera 3 in conjunction with the operation to warn the photographer. I am trying to do it.

As described above, in the present embodiment, when the interchangeable lens and the camera body which are different in system from each other are mounted as described above, the photographer must operate the mode change switch so that the two cannot be mounted. This allows the photographer to easily recognize what kind of system configuration the camera system currently has.

In this embodiment, a protruding pin protruding from the mount surface on the side of the interchangeable lens, a mode changeover switch for restricting and releasing the protruding pin, and a groove into which the protruding pin fits are provided on the camera body side. Although it is configured by providing it, the reverse configuration, that is, a protruding pin protruding from the mount surface on the camera body side, a mode changeover switch for restricting and releasing the protruding pin, and a groove into which the protruding pin enters on the interchangeable lens side Even if it is configured to be provided, the present invention can be applied similarly to the above-described embodiments.

Besides, the projecting pin may be provided on the camera body side and the mode changeover switch may be provided on the interchangeable lens side, and vice versa.

Further, in the present embodiment, the interchangeable lens of the camera for water and land is shown, but the invention is not limited to this, and if the system of interchangeable lens such as a video camera is different from each other, what is it? The present invention can be applied to any of them in the same manner as in the above-described embodiments.

[0031]

As described above, according to the present invention, when the camera body and the interchangeable lens which are different in system from each other are mounted, by operating the mode selector switch for switching the system configuration (mode) of the camera It is possible to achieve a camera system that allows the user to wear the camera and make the photographer recognize what kind of system configuration the current camera system has.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of essential parts when a waterproof lens and a waterproof camera according to a first embodiment of the present invention are combined.

FIG. 2 is a cross-sectional view of a main part when the waterproof lens of Example 1 of the present invention and a non-waterproof camera are combined.

[Explanation of symbols]

 1 Camera body (waterproof camera) 2 Interchangeable lens (waterproof lens) 3 Camera body (non-waterproof camera) 13,21 Mount 22 Prohibition means (protruding pin) 25 Release means (mode switch) 33 Mount

Claims (6)

[Claims] 1. An interchangeable lens detachable from a camera body, and a prohibition means for disabling a part of the interchangeable lens from being mounted when the system of the interchangeable lens is not the same as the system of the camera body. An exchange characterized in that at least one of releasing means for releasing the prohibited state by the prohibiting means is provided, and by allowing the releasing means to release the prohibited state of the prohibiting means, the both can be mounted. lens. 2. A camera body in which an interchangeable lens is detachable, and a prohibiting means for disabling mounting of the camera body on a part of the camera body when the system of the camera body is not the same as the system of the interchangeable lens. A camera characterized in that at least one of a releasing means for releasing the prohibited state by the prohibiting means is provided, and by releasing the prohibiting state of the prohibiting means by the releasing means, the camera can be mounted between them. Body. 3. A camera system having a camera body and an interchangeable lens detachable from the camera body,
When mounting the interchangeable lens on the camera body, prohibiting the mounting between the camera side system and the interchangeable lens side system by prohibiting means for prohibiting the mounting between the two systems when they are not the same system. A camera system characterized in that the canceling means for canceling the prohibited state cancels the prohibited state to permit mounting between the both. 4. The camera system according to claim 3, wherein the system of the camera body is a waterproof camera or a non-waterproof camera, and the system of the interchangeable lens is a waterproof lens or a non-waterproof lens. 5. The inhibiting means has a projecting pin projecting from the mounting surface of the camera body or the interchangeable lens, and the releasing means is means for canceling the advance / retreat of the projecting pin. 2 or 3 camera systems. 6. The camera system according to claim 1, wherein a warning is displayed on the interchangeable lens or the display section of the camera body in association with the release of the release means.