JPH11133310A - Microphotographic apparatus and camera adapter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a film from being exposed because a camera adapter is detached from an exposure device together with a camera. SOLUTION: This apparatus is provided with the exposure device 2 fitted to the photographic optical path of a microscope in order to photograph the image of the microscope and set for executing an exposure action for photographing, the camera adapter 1 fitted to the exposure device 2 in order to connect the exposure device 2 and the camera 3 and a lock mechanism 4 locking the fitting state of the adapter 1 to the exposure device 2 by interlocking with the attachment of the camera 3 to the adapter 1 and releasing the lock state only when the camera 3 is detached from the adapter 1. Thus, since the adapter 1 cannot be detached from the exposure device 2 unless the camera is detached from the adapter 1, the film in the camera 3 is prevented from being exposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microscope photographing apparatus, and more particularly to a microscope photographing apparatus capable of preventing exposure of a film when a 35 mm camera is attached and detached, and a camera adapter used in the apparatus.

[0002]

2. Description of the Related Art FIG. 7 shows a microscope photographing apparatus, in which an objective lens 11a is attached to a microscope main body 11, and a photographic optical path 11b through which light rays from the objective lens 11a are introduced. A photographic eyepiece 12 is mounted on the photographic optical path 11b. An exposure device 13 is attached to the photographic optical path 11b.

The exposure device 13 has a built-in photometric mechanism and a shutter mechanism, and has a camera adapter 1.
4, 16 are detachably attached and detached. In this case, the camera adapter 14 is attached with the 35 mm camera 15.
5mm camera adapter, camera adapter 16
Is a large camera adapter to which the large camera 17 is attached.

In such a microphotographing apparatus, the light beam that has exited the objective lens 11a is taken into the exposure device 13 from the photographic eyepiece 12, and the exposure device 13 performs an appropriate exposure operation through the 35mm camera adapter 14. 35
The image is projected and projected on the film surface of the mm camera 15. The large-size camera adapter 16 is attached to the exposure device 13 similarly to the 35 mm camera adapter, and enlarges and projects the microscope image that has passed through the photographic eyepiece 12 with the built-in lens.

[0005] Such a 35 mm camera adapter 14
The attachment of the large-size camera adapter 16 to the exposure device 13 is performed by a screw-in type having a fitting portion and a positioning pin, a bayonet mount type, a round dovetail type, or the like. Further, the attachment of the 35 mm camera 15 to the 35 mm camera adapter 14 is also performed by a structure having a part of a fitting portion and a positioning pin.

In this case, the 35 mm camera 15 has a light shielding plate 18 as shown in FIG. This shading plate 18
Is a 35mm camera adapter 14 with built-in film
It is a member for protecting the film from being exposed even when the camera 15 is removed from the camera 15 mm.
It opens and closes in conjunction with attachment and detachment to the 35 mm camera adapter 14.

On the other hand, the large-size camera 17 is attached by sliding with respect to the large-size camera adapter 16. As shown in FIG. 9, the large-sized camera 17 also has a built-in light-shielding plate 19 as in the case of the 35 mm camera 15, but this light-shielding plate 19 is independent of attachment and detachment to the camera adapter 16, ie, the camera It has a structure that can be opened and closed without interlocking with attachment and detachment to the adapter 16.

[0008]

SUMMARY OF THE INVENTION 35 mm film 15
When shooting is performed alternately by the camera and the large-size camera 17, these cameras are exchanged and the camera adapter 1 is replaced.
4 and 16 also need to be replaced.

At the time of this replacement, if the camera is detached from the exposure device 13 integrally with the camera adapter without first removing it from the camera adapter, an independent light shielding plate 19 is provided for mounting the camera and the camera adapter. In the large-size camera 17, the light exposure of the film does not occur by closing the light shielding plate 19 in advance, but in the 35 mm camera 15, since the attachment and detachment to the camera adapter and the opening and closing of the light shielding plate 18 are linked, the light shielding plate 18 is opened. It remains in the state. For this reason, the 35 mm camera has a problem that the film is exposed.

SUMMARY OF THE INVENTION The present invention has been made in consideration of such conventional problems, and is used in a microscope photographing apparatus capable of preventing exposure of a film due to a mistake in a photographing procedure and used in the photographing apparatus. It is intended to provide a camera adapter.

[0011]

According to a first aspect of the present invention, there is provided a photographing apparatus for a microscope, wherein the photographing apparatus is mounted on a photographic optical path of the microscope for photographing an image of the microscope and performs an exposure operation for photographing. In order to connect the exposure device to the camera, the camera adapter attached to the exposure device and the camera adapter attached to the exposure device are locked in conjunction with the attachment of the camera to the camera adapter. A lock mechanism for releasing the lock only when the adapter is removed from the adapter.

In this photographing apparatus for a microscope, when a camera is mounted on the camera adapter, the locking mechanism locks and attaches the camera adapter to the exposure device in conjunction with the mounting. The locking mechanism unlocks only when the camera is removed from the camera adapter, and does not otherwise unlock. That is, since the lock is not released unless the camera is removed from the camera adapter, the camera cannot be removed from the exposure device in an integrated state where the camera is not removed from the camera adapter, that is, in a state where the light shielding plate is kept open. As a result, the light-shielding plate cannot be removed from the exposure device while it is open,
The film can be prevented from being exposed to light.

According to a second aspect of the present invention, in the first aspect of the present invention, the lock mechanism includes a lock lever that engages with the exposure device and attaches the camera adapter to the exposure device. An urging member that urges the lock lever in a direction opposite to the engagement direction, and operates in conjunction with the attachment of the camera to the camera adapter, and engages the lock lever with the exposure device against the urging force of the urging member. And an interlocking member for displacing the moving member.

In the lock mechanism having this structure, the interlocking member displaces the lock lever in the direction of engagement with the exposure device in conjunction with the attachment of the camera to the camera adapter.
The lock lever engages the exposure device. By this engagement, the camera adapter is mounted on the exposure device. In this mounting state, the urging member urges the lock lever in the anti-engaging direction, and when the camera is removed from the camera adapter, the urging member releases the lock lever from the engagement. As a result, the locking mechanism can lock and attach the camera adapter to the exposure device in conjunction with attachment and detachment of the camera to and from the camera adapter, and can unlock the camera only with the camera adapter.

The camera adapter according to claim 3 is a camera adapter that is attached to an exposure device attached to a photographic optical path of the microscope for photographing an image of the microscope and connects the exposure device to the camera. A lock mechanism that locks the state of attachment to the exposure device in conjunction with the attachment to the adapter and that releases the lock only when the camera is removed is provided.

The locking mechanism of the camera adapter locks and fixes the camera adapter to the exposure device in conjunction with mounting the camera on the camera adapter. The lock mechanism releases the lock only when the camera is removed from the camera adapter, and does not release the lock otherwise. For this reason, the camera adapter cannot be removed from the exposure device while the light shielding plate integrated with the camera adapter remains open. Therefore, the light-shielding plate cannot be removed from the exposure device with the light-shielding plate kept open, and the film can be prevented from being exposed to light.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) FIGS. 1 and 2 show a first embodiment of the present invention, in which a camera adapter 1 is attached to and detached from an exposure device 1 and a camera 3 is attached to and detached from the camera adapter 1. It has become. In this embodiment, the camera adapter 1 is attached to the exposure device 2 by a screw type, and the camera 3 is attached to the camera adapter 1 by a bayonet mount type. Note that a 35 mm camera is used as the camera 3.

The 35 mm camera adapter 1 (hereinafter, referred to as camera adapter 1) is attached to the exposure device 2 by fitting a fitting projection 31 below the camera adapter 1 into a fitting hole 21 formed in the exposure device 2. This is done by fitting. After this fitting, the camera adapter 1 is fixed to the exposure device 2 by screwing the ring screw 33 of the camera adapter 1 into the screw portion 23 formed on the upper outer surface of the exposure device 1. These removals
This can be done by removing the ring screw 33 of the camera adapter 1 and pulling it upward. Positioning holes 2 for fitting and positioning each other are provided at opposing positions of the upper surface of the exposure device 2 and the lower surface of the camera adapter 1.
2 and positioning pins 32 are formed.

A bayonet mount 36 is mounted on the lower surface of the camera 3, and the camera 3 is attached to the camera adapter 1 with respect to a male bayonet mount 34 formed in a flange shape on the upper surface of the camera adapter 1. This is performed by rotating the female bayonet mount 35 formed on the inner surface of the bayonet mount 36 while aligning the claw position and the fitting portion with each other and applying the same in the trunking direction. This rotation is performed until the stoppers 38 and 39 abut.

In this embodiment, a lock mechanism 4 for locking the mounting state of the camera adapter 1 to the exposure device 2 is provided in conjunction with the mounting of the camera 3 on the camera adapter 1. The lock mechanism 4 includes an interlocking member 24.
, A lock lever 25, and a spring 26 as a biasing member.

The interlocking member 24 includes a rotating member 24a disposed inside the adapter body 37 of the camera adapter 1.
An interlocking pin 24b integrally protruding from an end of the rotating member 24a on the camera 3 side; and an operating pin 24c formed inside a bayonet mount 36 on the lower surface of the camera 3
And

The rotating member 24a rotates while sliding on the outer surface of the cylindrical portion 37a of the adapter body 37 for forming an optical path for photographic exposure. This rotation is performed by the operation pin 24c of the camera 3 contacting the interlocking pin 24b, and rotating the camera 3 for mounting the camera 3 in this contact state. In this embodiment, since the rotating member 24a is provided inside the adapter main body 37, the rotating member 24a does not come into contact with external members, and therefore, careless rotation does not occur.

The lock lever 25 is disposed on the inner surface of the adapter body 37 facing the rotating member 24a. The lock lever 25 is rotatably attached to a fixed shaft 25 a provided on the inner surface of the adapter body 37.
The lower end of the lock lever 25 is connected to the adapter body 3.
7 is extracted below, and the extracted lower end is
It is inserted into a key groove 27 formed on the upper part of the exposure device 2.

The lower end of the lock lever 25 is a bent lock claw 25b. The lock claw 25b engages with the projection 27a of the key groove 27, thereby allowing the camera adapter 1 to be exposed to the exposure device 2. The mounting status is locked. The rotation of the lock lever 25 in the engagement direction is
Lever pin 24d provided on rotating member 24a contacts lock lever 25, and rotation member 24a rotates in this contact state.

The spring 26 as an urging member has one end attached to the adapter body 37 and the other end connected to the lock lever 2.
It is hung on 5. The spring 26 urges the lock lever 25 so that the lock claw 25b does not engage with the projection 27a of the key groove 27. This allows the lock lever 25
Is in a state of being biased by a spring 26 in a direction opposite to the engagement with the projection 27a, and is always in a chain line state in FIG.

The interlocking member 24 described above includes a spring 26
To rotate the lock lever 25 against the urging force of
The rotation of the rotation member 24 a of the interlocking member 24 causes the lock lever 25 to engage with the projection 27 a of the key groove 27.

FIG. 3 shows the arrangement of the lock mechanism 4 having the above structure. The lock mechanism 4 is arranged at two orthogonal positions on the circumference of the camera adapter 1. In each lock mechanism 4, the lock lever 25 is urged by a spring 26 in a direction opposite to the exposure device 2, and the lock lever 25 engages with the exposure device 2 with the rotation of the camera 3 at the time of mounting. Rotate to match.

Next, the operation of this embodiment will be described.
The camera adapter 1 is attached to the exposure device 2 and the camera adapter 1 is fixed to the exposure device 2 by rotating the ring screw 33. In this state, the camera 3 is attached to the camera adapter 1.

The attachment of the camera 3 to the camera adapter 1 is performed by rotating the camera 3 with respect to the camera adapter 1 and engaging the male and female bayonet mounts 34, 35. Due to this rotation, the operation pin 24c on the camera 3 side becomes the interlock pin 2 on the camera adapter 1 side.
4b, whereby the rotating member 24a rotates.

The rotation of the rotating member 24a causes the lever pin 24d to abut on the lock lever 25,
push. As a result, the lock lever 25 rotates against the urging force of the spring 26, and the lock claw 25a is
, The camera adapter 1 is locked from being attached to the exposure device 2 by this engagement. Further, in conjunction with the attachment of the camera 3 to the camera adapter 1, the light-shielding plate 18 (see FIG. 8) built in the camera 3 opens, and photography can be performed.

Since the lock state of the lock mechanism 4 is maintained by the coupling force of the male and female bayonet mounts 34 and 35, the lock state continues while the camera 3 is mounted on the camera adapter 1. Therefore, even if the camera adapter 1 is to be removed from the exposure device 2 while the camera 3 is mounted, the lock is not released, so that the removal is impossible. For this reason, the camera adapter 1 cannot be removed from the exposure device 2 with the camera mounted, that is, with the light blocking plate 18 of the camera 3 opened, thereby preventing the film from being exposed carelessly. .

On the other hand, the camera 3
The camera 3 can be detached from the camera adapter 1 by rotating. By removing the camera 3, the lock lever 25 rotates in the direction opposite to the engagement with the protrusion 27 a by the urging force of the spring 26, and the lock of the lock mechanism 4 is released. Therefore, the camera adapter 1 itself can be removed from the exposure device 2.

(Embodiment 2) FIG. 4 shows a lock mechanism 50 according to Embodiment 2 of the present invention. In the lock mechanism 50, a rotating member is formed by an inner rotating member 51 and an outer rotating member 52 that rotates outside the inner rotating member 51. A curved cam groove 53 extending in the vertical direction is formed in the inner rotating member 51, and the outer rotating member 52
Is provided with a pin 54 that slides along the cam groove 52. When the pin 54 slides in the cam groove 52, the outer rotating member 52 moves downward while rotating.

At the lower ends of the rotating members 51 and 52, lock levers 55 and 56 are provided. These lock levers 55 and 56 enter the keyway 27 of the exposure device 2 by the rotation of the rotating members 51 and 52 and engage with the exposure device 2 as in the first embodiment. The lock levers 55 and 56 move in opposite directions, and engage with the exposing device 2 by moving in the opposite directions. The lock lever 56 of the outer rotating member 52 is
2 moves downward while rotating, so that it moves downward while rotating and has the same height as the lock lever 55 of the inner rotation member 51, and engages with the exposure device 2.

Further, the outer rotating member 52 is urged by a coil spring 57 to move upward.
As the outer rotating member 52 moves upward, the lock lever 56 moves upward while rotating in the opposite direction to that described above. The movement of the lock lever 56
Releases the engagement with the exposure device 2.

Further, the pin 54 of the outer rotating member 52 slides in the cam groove 53 in the direction opposite to the above as the member 52 rotates. Therefore, the rotational force is transmitted to the inner rotating member 51 via the pin 54 and the cam groove 53, and the inner rotating member 51 rotates in the opposite direction. This rotation causes the lock lever 55 to move in the opposite direction.
Releases the engagement with the exposure device 2.

In such a lock mechanism 50, one of the inner rotating member 51 and the outer rotating member 52 is linked to the mounting of the camera 3 on the camera adapter 1, and when the camera 3 is attached to the camera adapter 1, With the rotation of 3, the rotation members 51 and 52 rotate in opposite directions, and the rotation causes the lock levers 55 and 56 to engage with the exposure device 2 to lock the attachment state of the camera adapter 2 to the exposure device 1.

(Embodiment 3) FIG. 5 shows a lock mechanism 60 in Embodiment 3, and 61 is a rotating member.
The rotating member 61 rotates in the direction of the arrow with the rotation when the camera 3 is attached to the camera adapter 1. Also,
On the lower surface of the rotating member 61, a concave portion 62 and a convex portion 63 are formed.

On the other hand, fixed shafts 64, 6
5 are provided, and lock levers 66 and 67 are rotatably attached to the fixed shafts 64 and 65, respectively. The lock lever 66 is engaged with the concave portion 62 of the rotating member 61, and the lock lever 67 is engaged with the convex portion 63 of the rotating member 61. Further, the lock levers 66 and 67 are urged in the half-engagement direction with the exposure device 2 by springs 68 and 69 as urging means. For this reason, when the camera 3 is not attached to the camera adapter 1, that is, when the camera 3 is detached from the camera adapter 1, the lock levers 66 and 67 are at the dashed line position and do not engage with the exposure device 2,

In such a structure, when the camera 3 is rotated to attach the camera 3 to the camera adapter 1, the rotation member 61 rotates in the direction of the arrow, and the rotation causes the lock levers 66 and 67 to move in the opposite directions. And engages with the exposing device 2. Therefore, the attachment state of the camera adapter 1 to the exposure device 2 can be locked in conjunction with the attachment of the camera 3.
This locked state is continued except for removing the camera 3 from the camera adapter 1, so that exposure of the film can be prevented. Also, as described above, when the camera 3 is detached from the camera adapter 1, the lock lever 6
The locks of the cameras 6 and 67 are released, and the camera 3 and the camera adapter 1 and the exposure device 2 can be removed.

(Fourth Embodiment) FIG. 6 shows a lock mechanism 70 according to a fourth embodiment. The lock mechanism 70 is not a rotary type as in the bayonet mount type, and the camera 3 and the camera adapter 1 are not rotated.
It is applied to the method of mounting by contacting / separating from.

In the lock mechanism 70, the upper ends of the two lock levers 71 and 72 are connected by a connecting pin 73 so as to be mutually rotated. Lock lever 7
A separation pin 74 is provided between 1 and 7 so as to be sandwiched therebetween. Further, the respective lock levers 71, 72
Are connected to springs 75 and 76.
6, the lock levers 71 and 72 are urged to open. Therefore, the lock levers 71 and 72 are urged by the springs 75 and 76 to be at the chain line position. In such a dashed line position, the lock levers 71 and 72 do not engage with the exposing device 2.

In this structure, when the camera 3 is pressed against the camera adapter 1 in order to mount the camera 3, the lock levers 71 and 72 are pushed, so that the lock pins 71 and 72 are opened by the separation pin 74 to be in a solid line state. For this reason, the lock levers 71 and 72 are engaged with the exposure device 2, and the attachment state of the camera adapter 1 to the exposure device 2 can be locked in conjunction with the mounting of the camera 3.

The present invention is not limited to the above embodiments, but can be variously modified. For example, as a lock mechanism, a switch or a contact is provided between the camera 3 and the camera adapter 1, and power is transmitted from a motor, a solenoid, or the like by these signals to move the lock levers in opposite directions, thereby exposing the exposure device 2 The mechanism may be an electrical mechanism that engages with the motor, or a mechanism that uses an electromagnet.

[0045]

As described above, according to the first aspect of the present invention,
Since the camera adapter is locked to the exposure device in conjunction with mounting the camera on the camera adapter, and a lock mechanism that unlocks this lock only when the camera is removed from the camera adapter is provided, The camera adapter cannot be removed from the exposure device when it is attached to the camera. Therefore, since the camera is inevitably removed preferentially, it is possible to prevent exposure of the film due to removing the camera together with the camera adapter from the exposure device while the film being photographed is inserted.

According to the second aspect of the present invention, the interlocking member for displacing the lock lever in the direction of engagement with the exposure device is provided in conjunction with the attachment of the camera to the camera adapter. It can be done reliably.

According to the third aspect of the present invention, the camera adapter is locked to the exposure device in conjunction with the attachment of the camera to the camera adapter, while the lock is released only when the camera is removed from the camera adapter. Since the mechanism is provided, it is possible to prevent the film from being carelessly exposed when the camera is attached or detached.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view before mounting a camera according to a first embodiment of the present invention.

FIG. 2 is a sectional view from the side of FIG. 1;

FIG. 3 is a partial cross-sectional view of the first embodiment from a plane.

FIG. 4 is a front view of a lock mechanism according to a second embodiment.

FIG. 5 is a partial front view of a lock mechanism according to a third embodiment.

FIG. 6 is a front view of a lock mechanism according to a fourth embodiment.

FIG. 7 is an exploded front view of the microscope photographing apparatus.

FIG. 8 is a perspective view of a 35 mm camera.

FIG. 9 is a perspective view of a large-size camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera adapter 2 Exposure device 3 Camera 4 Lock mechanism 24 Interlocking member 25 Lock lever 26 Spring

Claims (3)

[Claims] 1. An exposure device attached to a photographic optical path of a microscope for photographing an image of a microscope and performing an exposure operation for photographing, a camera adapter attached to the exposure device for connecting the exposure device to a camera, and a camera A lock mechanism that locks the mounting state of the camera adapter to the exposure device in conjunction with the mounting of the camera on the adapter and that releases the lock only when the camera is removed from the camera adapter. Microscope photography equipment. 2. A lock lever which engages with the exposure device to attach the camera adapter to the exposure device, a biasing member which biases the lock lever in a direction opposite to the engagement with the exposure device, An interlocking member that operates in conjunction with attachment of the camera to the camera adapter and displaces the lock lever in the direction of engagement with the exposure device against the urging force of the urging member. The microphotographing device according to claim 1. 3. A camera adapter attached to an exposure device attached to a photographic optical path of the microscope for photographing an image of the microscope, the camera adapter connecting the exposure device to a camera, and interlocking with the attachment of the camera to the camera adapter. A camera adapter comprising: a lock mechanism for locking a state of attachment to an exposure device, and releasing the lock only when the camera is removed.