JPH06102577A - Camera provided with data imprinting function - Google Patents

Abstract

PURPOSE:To provide a camera where an image-formation optical member for imprinting data is easily assembled in a camera main body and which can save handling time for controlling the parts of the image-formation optical member. CONSTITUTION:A light emitting body 21 emitting illuminating light corresponding to the imprinted data is provided on a substrate 22 on the upper part of a camera body 1. Then, a 1st prism 31 allowing the illuminating light from the light emitting body 21 to form an image at the data imprinting position of a full size image frame, and a 2nd prism 32 allowing the light to form the image at the data imprinting position of a panoramic size image frame are provided. Positioning work in the case of attaching the prisms 31 and 32 to the camera body 1 is finished at a time by integrally coupling the prisms 31 and 32 through a coupling member 33 taken around the outside of optical paths OP1 and OP2 in a state where they keep positional relation at the time of attaching them to the camera body 1. A mask 41 linking with a lower light intercepting frame covering up the lower part of an aperture 3 when a panoramic size is selected is provided on the front surface of the 2nd prism 32 so as to perform light interception when a full size is selected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera capable of imprinting data such as a photographing date on any of a plurality of screen sizes having different sizes.

[0002]

2. Description of the Related Art As a camera capable of switching the size of a photographing screen, as shown in FIG. 4, a full size image having substantially the same shape as the aperture of the camera body and both end portions along the film feeding direction from this full size screen are fixed. It is known to switch between a so-called panoramic size of a large width. With such a camera, data such as the shooting date 1
It is necessary to imprint 01 and 102 in a desired size at a data imprinting position specific to each screen size (upper left corner of each screen in the illustrated example). Therefore, conventionally, image forming optical members such as prisms for forming illumination light emitted from a light emitting body such as an LED on a film surface are separately prepared for full size and panoramic size, and these are provided. They were installed at different positions inside the camera body.

[0003]

However, the attachment work of the imaging optical member requires a strict positioning accuracy due to the limitation of the focus accuracy, which is extremely troublesome. For this reason,
If two types of imaging optical members are prepared and individually attached, the work load is significantly increased, and the work time is lengthened.
In addition, when two types of imaging optical members are prepared, the number of parts increases, and especially when these cannot be made common due to the relationship of the magnification required for each imaging optical member, similar parts that are difficult to distinguish at first sight occur. Therefore, it is necessary to thoroughly manage parts so as not to be confused with misidentification during assembly.

It is an object of the present invention to provide a camera in which a plurality of image forming optical members can be easily assembled to a camera body and the parts management of the image forming optical members is not required.

[0005]

To explain the present invention, referring to FIG. 1 showing an embodiment, the present invention relates to screen sizes to be imprinted on a film surface, a first screen size and a second screen size which are different from each other.
It is possible to switch between the screen sizes of
Includes a light-emitting body 21 that emits illumination light for imprinting data on the film surface, and a first light-emitting body 21 that forms an image of the illumination light on the film surface at a data imprinting position in the first screen size. It is applied to a camera provided with an image forming optical member 31 and a second image forming optical member 32 for forming an image of illumination light at a data imprinting position in the second screen size on the film surface. The above-mentioned purposes are the first and the second.
When one of the image forming optical members 31 and 32 is positioned so that the illumination light forms an image at the data imprinting position of the corresponding screen size, the other image forming optical member displays the data of the corresponding screen size. The first and second imaging optical members 3 are arranged so that the illumination light is imaged at the projection position.
While maintaining the relative position of 1, 32, these first and second
This is achieved by integrally connecting the image forming optical members 31 and 32.

The first and second screen sizes are appropriately set according to the purpose of the camera. As an example, as shown in FIGS. 1 and 4, the first screen size is the aperture 3 of the camera body 1. There is a full size of the same shape as the above, and a second screen size is set to a panorama size in which both ends along the film feeding direction are cut out from the full size screen.

[0007]

With either one of the first and second image forming optical members 31 and 32, the illumination light is formed into an image at the data imprinting position on the side corresponding to either the first or second screen size. When positioned, the other imaging optical member is arranged at a position where the illumination light can be imaged at a data imprinting position of a corresponding screen size.

Incidentally, in the section of means and action for solving the above-mentioned problems for explaining the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. It is not limited to.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The present embodiment is an example in which the present invention is applied to a camera in which the size of the shooting screen can be switched between full size and panoramic size as shown in FIG.
In FIG. 1, reference numeral 1 is a camera body, and a spool chamber 2 surrounded by a partition wall 1a is provided on one side thereof. A rectangular aperture 3 for exposing the film F is formed on the back surface 1b of the camera body 1, and rails 4a and 4b are formed along the upper and lower ends of the aperture 3. A substantially cylindrical spool 5 is mounted in the spool chamber 2 with its axis oriented in the vertical direction of the camera body 1. Film F exposed on aperture 3
Is spool 5 while being guided along rails 4a and 4b.
To be wound up.

Reference numeral 11 is a lower light-shielding frame for switching the photographing screen. The lower light-shielding frame 11 has a light-shielding plate 12 extending along the aperture 3 and a pair of support plates 13 protruding from both ends of the light-shielding plate 12, and a support shaft 13a planted in the support plate 13 has a support shaft 13a. It is supported by and is rotatable around the axis of the support shaft 13a. The operation of the lower light-shielding frame 11 is controlled by a screen size switching mechanism (not shown), and when the full size is selected, the light-shielding plate 12 is retracted below the lower end of the aperture 3 and the panorama size is selected. Rotates the light shielding plate 12 to a position where it projects upward from the lower end of the aperture 3 by a predetermined amount (see arrow A in the figure).

Above the lower light-shielding frame 11, an upper light-shielding frame 14 having substantially the same structure as the lower light-shielding frame 11 is provided. The operation of the upper light-shielding frame 14 is also controlled by a screen size switching mechanism (not shown). When the size is full, the light-shielding plate 15 retracts to a position higher than the upper end of the aperture 3, and when the panoramic size is used, the light-shielding plate 15 moves from the upper end of the aperture 3. It rotates to a position where it projects downward by a predetermined amount. When the shading plates 12 and 15 retract from the lower end and the upper end of the aperture 3, respectively, as shown in FIG. 4, a full-size screen having substantially the same shape as the aperture 3 is imprinted on the film surface, and the shading plates 12 and 15 of the aperture 3 are When projected from the lower end and the upper end, a panoramic size screen obtained by cutting the fill size screen by a certain width from both ends along the film feeding direction is imprinted on the film surface.

Reference numeral 21 is data 101, 102 such as a photographing date.
It is a light-emitting body for imprinting (see FIG. 4). Luminous body 2
Reference numeral 1 denotes a plurality of individually blinkable LEDs arranged in a line, and the LEDs are fixed to a substrate 22 on the upper part of the camera body 1 with the arrangement direction of the LEDs aligned with the photographing optical axis direction.
A drive circuit 23 is mounted on the substrate 22. The drive circuit 23, among the LEDs constituting the light emitting body 21, outputs data 10 among the LEDs constituting the light emitting body 21 in accordance with a control signal output from a control circuit (not shown) at the time of winding the film F after the photographing is finished.
Only the LEDs required to express a specific row orthogonal to the film feeding direction of 1, 102 are selectively made to emit light. The selective light emission of the LED by the drive circuit 23 is sequentially repeated from the first column of the data 101 and 102 during the film feeding at a cycle corresponding to the film feeding speed, and these illumination lights are emitted from the small hole 1c of the camera body 1. By being guided to the prisms 31 and 32 to form an image on the film surface, the data 101 and 102 are sequentially imprinted on the film surface being fed.

As shown in FIGS. 2 and 3, the prism 3
Reference numerals 1 and 32 denote first prism lenses 31a and 32a that capture the illumination light of the light-emitting body, and prism reflection surfaces 31b and 32 that bend the captured illumination light by 90 ° toward the film surface.
b, and second prism lenses 31c and 32c for focusing the reflected illumination light on the film surface,
They are integrally coupled by a coupling member 33 that is routed outside the optical paths OP1 and OP2 of the illumination light from the light emitter 21. The prism 31, which is integrated by the coupling member 33,
The relative position of 32 is such that when the first prism 31 is positioned so that the illumination light forms an image at the data imprinting position on the full size screen, the second prism 32 illuminates the panorama size data imprinting position. It is set so as to be arranged at a position where light is imaged.

The prisms 31, 32 and the coupling member 33 may be integrally molded by a molding means such as injection molding and may be subjected to necessary post-processing. Separately molded products may be integrally molded by a bonding material such as an adhesive. May be combined. The point is that before they are assembled to the camera body 1, they may be integrated while maintaining the relative positions described above. When the respective parts are connected by an adhesive or the like, a jig for placing the prisms 31, 32 at the above-mentioned relative positions is prepared and they are connected, or the prisms 31, 32 and the connecting member 33 are connected.
It is advisable to provide a fitting portion for alignment at the joint portion with.

As shown in FIG. 1, a mask 41 is provided in front of the second prism 32 attached at a predetermined position of the camera body 1. The mask 41 moves in the up-down direction of the camera body 1 as the lower light-shielding plate 11 rotates by engaging the slit 41a formed in the lower portion thereof with the drive pin 11a planted in the lower light-shielding plate 11. Made possible. When selecting the panorama size, the mask 41 also rises in response to the upward movement of the lower light shielding plate 11 and its opening 41b.
Faces the second prism 32. This allows the illumination light that has passed through the second prism 32 to be imprinted on the film surface. When selecting the full size, the mask 41 descends, the optical path from the second prism 32 to the film surface is blocked by the mask 41, and the second prism 3 to the full size screen is displayed.
The transmission of the passing light of 2 is prevented. Note that when the panorama size is selected, the illumination light from the first and second prisms 31 and 32 is simultaneously projected onto the film surface. As is clear from FIG. 4, the data imprinting position on the full size screen is the panoramic size screen. There is no problem because it is off.

In the camera having the above structure, the first and second prisms 31 and 32 are integrally combined in the above-mentioned positional relationship, and therefore, when these are assembled to the camera body 1, one of the prisms 31 is mounted. , 32 need only be positioned so that the illumination light forms an image at the corresponding data imprinting position, and there is no need to position the other prism again. Therefore, the load at the time of mounting work is almost the same as that when a single prism is used, and the work load is reduced and the working time is greatly shortened as compared with the case where two prisms are individually mounted. Since the number of parts is reduced and the prisms are not mixed up when assembled,
The labor required for parts management is also reduced.

In the above embodiments, the camera body 1 constitutes the camera body, the first prism 31 constitutes the first image forming optical member, and the second prism 32 constitutes the second image forming optical member.

The present invention is not limited to the camera that switches the screen size between the full size and the panorama size as in the embodiment, but may switch between the full size and the half size. Even if the camera has three or more screen sizes, the present invention can be applied because it has the first and second screen sizes different from each other. In this case, all the image forming optical members for each screen size may be integrally combined, or any two or more image forming optical members may be selectively combined.

[0019]

As described above, according to the present invention, since the first and second image forming optical members are integrally connected in a predetermined relative position, each image forming optical member can be positioned at one time. Therefore, it is possible to reduce the load of the work of attaching the imaging optical member to the camera body and to shorten the work time. Further, since the number of parts is reduced and the image forming optical members are not mixed up at the time of assembling, the labor required for parts management is reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of the vicinity of a spool chamber of a camera according to an exemplary embodiment of the present invention as viewed from the rear side of the camera.

FIG. 2 is an enlarged perspective view of the imaging optical member of FIG.

FIG. 3 is a cross-sectional view taken along the optical path of the panoramic size imaging optical member of FIG.

FIG. 4 is a diagram showing data imprinting positions on a full size screen and a panoramic size screen.

[Explanation of symbols]

 1 Camera Body 3 Aperture 21 Light Emitting Body 31 First Prism 32 Second Prism 41 Mask

Claims (2)

[Claims] 1. A screen size to be imprinted on a film surface is switchable between a first screen size and a second screen size having different sizes, and the camera body imprints data on the film surface. A illuminator for illuminating the illuminating light, a first imaging optical member for illuminating the illuminating light of the illuminator at a data imprinting position on the film surface in a first screen size, and the illuminating light. A camera with a data imprinting function, comprising: a second imaging optical member for forming an image at a data imprinting position in the second screen size on the film surface, wherein the first and second imaging optics are provided. When one of the members is positioned so that the illumination light forms an image at the data imprinting position of the corresponding screen size, the other imaging optical member is positioned at the data imprinting position of the corresponding screen size. The first and second image forming optical members are integrally combined in a state where the relative positions of the first and second image forming optical members are maintained so as to be arranged at the position where the illumination light is imaged. A camera with a data imprinting feature. 2. The first screen size is a full size that is substantially the same as the aperture of the camera body, and the second screen size is measured at both end portions along the film feeding direction from the full size screen. The camera with a data imprinting function according to claim 1, wherein the camera has a panoramic size of a large size.