JPH05158157A - Multi-format photographing device - Google Patents

Abstract

PURPOSE:To provide a multi-format photographing device which is small in size, light in weight, simple and inexpensive and by which excellent image quality is obtained. CONSTITUTION:The image of a display device 6 is formed on a film 2 through mirrors 7 and 8, the photographing lens 15 of a lens moving table 12 and a mirror 9. By moving the table 12 along an optical axis, the image of the display device is formed at two positions (a) and (b) on the film 2. Besides, the rear group 15b of the lens 15 is moved by using a cam 21 and a lever 18 and a focal distance is adjusted in order to make photographing magnification at two positions (a) and (b) identical. Moreover, the image of plural rows and plural columns can be photographed on the film 2 by moving the table 12 (or the optical elements 15a and 15b thereof) in a direction which is in parallel with the surface of a paper.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-format photographing device for photographing a plurality of images on a predetermined photosensitive material.

[0002]

2. Description of the Related Art Conventionally, multi-format photographing in which an image displayed on a display device such as a monitor TV is divided into an X-ray film and other photosensitive materials and exposed, and a plurality of images are photographed on one photosensitive material. The machine is known.

In such an apparatus, a mechanism as shown in FIG. 1 or 2 is used to obtain the above multi-format image. In both figures, reference numeral 6 is a display device such as a monitor television, and reference numeral L is a lens for forming an image of the display device 6 on the film F.

In the system shown in FIG. 1, the lens L and the display device 6 are used.
Is fixed, and the film F is moved in each of the xy directions to form images on the display device 6 at a plurality of positions on the film F. On the other hand, in the system shown in FIG. 2, the film F is fixed, and a plurality of images are formed on the film F by scanning in the xy directions with the lens L and the display device 6 integrated.

[0005]

In the conventional methods shown in FIGS. 1 and 2, either the optical system such as the lens L or the display device is moved, or the film F is accommodated, which is also large in size. Since the cassette mechanism has to be moved for scanning, the size of the entire apparatus becomes large, and since the member to be moved is large, the mechanism for that also has to be large and sturdy, resulting in high cost. There is a problem.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems and to provide a multi-format photographing apparatus which is small in size, light in weight, simple in cost and excellent in image quality.

[0007]

In order to solve the above problems, in the present invention, in a multi-format photographing device for photographing a plurality of images on a predetermined photosensitive material,
A configuration is adopted which has a control means for forming a subject image on different positions on the photosensitive material by moving an optical element of an optical system for forming the subject image on the photosensitive material.

[0008]

According to the above construction, multi-format photographing can be performed without moving the subject or the photosensitive material.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the drawings.

3 and 4 are a plan view and a perspective view of a multi-format photographing apparatus adopting the present invention. In the figure, reference numeral 1 is a commonly used film cassette, in which a sheet film 2 is housed, and a shutter plate 3 is inserted into an exposure portion thereof to block external light.

After the film cassette 1 is inserted into the receiving opening 5 of the main body 4 and the shutter plate 3 is pulled out, the film 2 is exposed on the optical path surface of an optical system, which will be described later, in the apparatus, so that the film can be photographed.

Reference numeral 6 is a display device including a CRT,
The image displayed on the display device 6 is focused on the film 2 through the mirrors 7 and 8, the photographing lens 15 and the mirror 9. The exposure amount at the time of shooting is controlled by the shutter 14.

The taking lens 15 includes a front group 15a and a rear group 1.
5b, each element is mounted on the lens moving table 12. Further, the lens moving table 12 has a lens 15
A mirror 9 that directs the light toward the film 2 is attached. The lens moving base 12 is movably supported so as to be able to reciprocate along the X direction in FIG. 3, and the motor 13 rotates the feed screw 10 via the belt 11 so that the feed screw 10 is screwed into the lens moving base. The position of the lens moving base 12 is controlled via the threaded portion 10a on the 12th side.

For example, there is a mirror 9 at the position shown in FIG.
Here, after the film 2 is exposed, the motor 13 is rotated to move the lens moving base 12 so that the mirror 9 is located at the position b, and the exposure is performed again, whereby the X direction in FIG. Film 2 with multiple images arranged along
Can be formed on.

However, when the lens moving base 12 has moved to the position b, the distance between the display surface of the display device 6 and the exposure surface of the film 2 is from a to b.
Increases by 2 moves. Moreover, since the taking lens 15 also moves, the magnification of the image also changes.

Therefore, in the present invention, the taking lens is a zoom lens, and the focal length of the taking lens 15 is changed in association with the movement of the lens moving base so that an image is always formed at a constant magnification. In general, since the zoom lens can change the focal length by changing the distance between the lens groups, in this embodiment, the front group 15a of the taking lens 15 is fixed to the lens moving base 12 and the rear group 15b is fixed to the lens moving base. It is supported via a lens barrel 16 so as to be slidable inside 12 in the direction of its optical axis.

An L-shaped lever 18 is rotatably supported on the lens moving base 12 via a pin 19. One end of the lever 18 engages with the pin 17 of the lens barrel 16 and the other. A pin 20 is attached to the end. The pin 20 engages with a cam 21 formed on the camera body side. Pin 20
The cam 21 is engaged with the cam 21 by applying a biasing force in the clockwise direction of FIG. 3 to the lever 18 by a spring 22 (FIG. 3) or the like.

The pin 20 is interlocked with the movement of the lens moving base 12 and is moved to the K position when the mirror 9 is in the a position,
When the mirror 9 is at the position b, it moves to the position M. As a result, the lens barrel 16 is moved via the lever 18, and the focal length of the taking lens 15 is controlled according to the movement of the lens moving base 12 so that the taking magnification is always constant.

With the above structure, the film 2 shown in FIG.
As shown in, a plurality of images in two rows and one column can be photographed at the same photographing magnification. In the present embodiment, a plurality of images are photographed by moving the lens and the mirror, and moving the lens element without moving a member having a large size as in the conventional case. Therefore, the mechanism can be configured to be small, lightweight, simple and inexpensive. it can. Further, since the member to be moved is lightweight, the accuracy of movement control can be easily increased, and the image quality of shooting can be improved.

Although the embodiments shown in FIGS. 3 and 4 are for photographing images at two positions a and b, it is possible to photograph two or more images by setting an appropriate optical system. Needless to say.

In the example of FIGS. 3 and 4, only one group of the photographing lens 15 can be moved according to the movement of the lens moving base 12 to correct the magnification, but depending on the format or the moving distance of the lens. May not always be able to sufficiently correct the focal length.

In such a case, not only the rear group 15b of the taking lens 15 but also the front group 1 as shown in FIGS.
By controlling 5a also in conjunction with the movement of the lens moving base 12, the focal length can be corrected and the photographing magnification can be made the same.

5 and 6 are a top view and a perspective view corresponding to FIGS. 3 and 4, respectively. In both figures, the taking lens 1 is shown.
The front group 15a of No. 5 is also supported by the lens barrel 16 'and is slidable in the optical axis direction within the lens moving table 12. The lens barrel 16 ′ is controlled by the lever 31 like the lens barrel 16. Other configurations are the same as those in FIGS. 3 and 4.

In FIGS. 5 and 6, one end of the lever 31 is engaged with one end of the lens barrel 16 'through a pin 17',
The central portion of the lever 31 is supported by a part of the lens moving base 12 via a pin 19 '. Pin 2 at the other end of lever 31
0'slides along a cam 32 fixed to the body 4 side. The lever 31 is urged by the film 22 'in the counterclockwise direction in FIG.

According to such a configuration, the lens moving table 1
By controlling the front group 15a side of the taking lens 15 in conjunction with the movement of 2, it is possible to secure a sufficient focal length adjustment range, and even when a large number of images are taken on the film 2,
The shooting magnification can be kept constant at all times.

In the above, the case where a plurality of images are photographed in one column is shown. However, when a plurality of rows × a plurality of columns of images are two-dimensionally photographed on the film 2, as shown in FIGS. 7 and 8. Use a different structure. In addition to the structures of FIGS. 3 and 4, the structure of FIG. 8 is such that the lens moving table 12 can be moved up and down along the Y direction in the drawing. In this case, the positions of the film 2 stored in the film cassette 1, the display device 6, and the mirrors 7 and 8 are fixed in the main body 4.

FIG. 7 shows the principle of the structure shown in FIG. 8. When the object O is moved by y in the direction perpendicular to the optical axis with respect to the taking lens 15, the image I is moved by Y. Y
The relation between y and y is Y = (1 + m) y (m represents the magnification of the optical system by the taking lens 15).

Based on this principle, a plurality of images arranged in a plurality of rows and a plurality of columns can be obtained as shown in FIG. 8 (in this case, 2 rows × 2 columns).

In the case of FIG. 8, the lens moving table 12 can be moved via the pantograph elevating mechanism 41 in the Y direction while keeping the optical axes parallel to each other. The pantograph lifting mechanism 41 is supported on a base 45 thereof.

The pantograph lifting mechanism 41 comprises two plate portions for moving the lens moving base 12 in parallel as shown in the drawing, and the feed screw 41a penetrates through these plate portions. The direction of the feed screw 41a is a reverse screw at a portion screwed with the two plate portions.

For this reason, the belt 43 is driven by the motor 42.
By rotating the feed screw 41a via, it is possible to move up and down along the Y direction in the drawing.

On the other hand, the feed screw 10 has a dovetail groove moving mechanism 46.
Of the dovetail groove, the dovetail groove moving mechanism 46 is engaged with the lens moving table 12 at the dovetail groove portion, and the feed screw 10, the belt 11, and the motor 13 are fixed to the frame side. However, even when the lens moving table 12 is moved in the Y direction, the vertical movement of the lens moving table 12 is not hindered by the feed screw 10.

With such a structure, it is possible to photograph a plurality of rows × a plurality of columns on the film 2.

[0034]

As is apparent from the above, according to the present invention, in a multi-format photographing device for photographing a plurality of images on a predetermined photosensitive material, an optical system for forming a subject image on the photosensitive material. By adopting a constitution having a control means for forming a subject image at a different position on the photosensitive material by moving the optical element of, it is possible to perform multi-format photographing without moving the subject or the photosensitive material. Therefore, it is possible to provide a multi-format photographing apparatus which is small in size, light in weight, simple, inexpensive, and excellent in image quality, because a large-scale member moving mechanism is unnecessary.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a structure of a conventional multi-format photographing device.

FIG. 2 is an explanatory diagram showing a structure of a conventional multi-format photographing device.

FIG. 3 is a top view of a main part of the multi-format photographing device according to the present invention.

FIG. 4 is a perspective view of a main part of a multi-format photographing device according to the present invention.

FIG. 5 is a top view showing a structure of a different main part of the multi-format image pickup apparatus according to the present invention.

FIG. 6 is a perspective view showing a structure of a different main part of the multi-format image pickup apparatus according to the present invention.

FIG. 7 is an explanatory diagram showing an operation principle in a further different embodiment of the multi-format image pickup apparatus adopting the present invention.

FIG. 8 is a perspective view of a main part of a multi-format photographing device using the principle of FIG.

[Explanation of symbols]

 1 film cassette 2 film 3 shutter plate 6 display device 7 mirror 8 mirror 9 mirror 10 feed screw 11 belt 12 lens moving base 13 motor 14 shutter 15 shooting lens 18 lever 20 pin 41 pantograph lifting mechanism 46 dovetail groove moving mechanism

Claims (3)

[Claims] 1. In a multi-format photographing apparatus for photographing a plurality of images on a predetermined photosensitive material, the object image is formed by moving an optical element of an optical system for forming the object image on the photosensitive material. A multi-format photographing apparatus having a control means for forming an image at a different position on a photosensitive material. 2. An object image is formed on a two-dimensional plane on the photosensitive material by moving an optical element of the optical system in a direction along an optical axis direction and in a direction intersecting the optical axis direction. The multi-format imaging device according to claim 1, wherein the position is controlled. 3. The optical system comprises a zoom lens system, the zoom amount of the optical system is adjusted in association with the movement of the optical element in a direction along the optical axis direction, and the subject image is the photosensitive material. The multi-format image pickup apparatus according to claim 1 or 2, wherein an image is always formed on the upper surface at a constant magnification.