JP3082365B2 - Camera with data imprinting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera having a data imprinting device provided on a camera body.

[0002]

2. Description of the Related Art A camera equipped with this type of data imprinting device is disclosed in, for example, Japanese Patent Application Laid-Open No. 63-27823. The data imprinting device disclosed in this publication switches the size of characters to be imprinted on the film surface in conjunction with switching the shooting screen between full size and half size. The size of the characters to be projected is changed by inserting the first lens into the projection optical path and inserting the second lens having a different magnification into the projection optical path during half-size shooting.

[0003]

However, in such a conventional camera, the optical path of the illumination light for imprinting data is fixed, so that the fixed position of the aperture is always fixed regardless of the size or shape of the photographing screen. Through the film to a predetermined position. That is, in the data imprinting device disclosed in the above publication, data is imprinted on the lower end of the center of the film. Therefore, in the case of a camera that switches between full size and panorama size, if the data to be projected is to be arranged in the longitudinal direction of the full-size shooting screen, the above-described conventional data projection device can cover the top and bottom of the aperture. Inevitably, data cannot be imprinted on a panorama-sized shooting screen.

In a full-size and half-size switching camera, if data to be imprinted is arranged in the longitudinal direction of a photographing screen even in the case of a half-size image, similarly, in a conventional data imprinting apparatus, a half-size data imprinting apparatus is used. Data cannot be projected on the screen.

[0005] Further, in the conventional apparatus, data has to be imprinted at a position appearing on a photographing screen of any size.
In the camera that can be switched between the full size and the half size as described above, the printing position is restricted to the center lower edge position of the aperture, and the degree of freedom of the printing position is impaired.

An object of the present invention is to provide a camera capable of imprinting data irrespective of the photographing screen size and having a high degree of freedom in imprinting position.

[0007]

(1) Referring to FIGS. 1 and 2 showing an embodiment, the present invention is directed to a light emitting element 21 for irradiating illumination light for imprinting data on a film surface. And a data projection device having an optical system 23 for imaging the illumination light from the light emitting element 21 on the film surface, which is disposed on the camera body side, so that at least two types of screen sizes can be switched. Applies to cameras that have The above object is achieved by the following configuration. The light emitting element 21 is disposed on the upper surface side of the camera so that the illumination light travels below the camera. The optical system is changed to an incident surface 23d on which illumination light emitted from the light emitting element 21 is incident.
And a reflecting surface 23c for reflecting the incident illumination light toward the film surface, and an emission surface 23 for emitting the reflected illumination light.
e is integrated, and is constituted by a prism 23 that forms an image of incident illumination light on a film surface. Prism 23,
A first position (illustrated by a solid line in FIG. 1) in which illumination light is imaged at a first magnification at a first predetermined position of a film defined by one screen size in conjunction with the switching of the screen size.
And the first of the film specified in the other screen size
And a second position (indicated by a two-dot chain line in FIG. 1) at which illumination light is imaged at a second predetermined position different from the first magnification at a second predetermined position different from the first magnification. The first and second magnifications are movably held so as to be changed by the difference in length. Further, the prism 23 is disposed so that the illumination light reflected by the reflection surface 23c of the prism 23 at the first and second positions is incident perpendicularly to the film surface from the emission surface 23e. (2) The camera according to claim 1 is the camera according to claim 1,
An elongated space S in the vertical direction of the camera is provided at a location surrounded by the three elements on the spool chamber 3, the dark box 2, and the back of the camera,
A prism 23 is provided in the space S so as to be vertically movable, and illumination light from the light emitting element 21 is incident on the space S from above the camera.

[0008]

When the screen size has been switched to the first size, the prism moves to the first position and imprints data at a first magnification on a first predetermined position on the film. When the size is switched to the second size, the prism 23 moves to the second position and imprints the data at the second predetermined position on the film at the second magnification. Illumination light from the light emitting element 21 on the upper surface of the camera travels below the camera and enters the prism 23. The incident light is reflected by the reflecting surface 23c of the prism 23 at each of the first and second positions, and the reflected illumination light is perpendicularly incident on the film surface from the emission surface 23e.

In the means and means for solving the above problems which explain the constitution of the present invention, the drawings of the embodiments are used to make the present invention easy to understand. However, the present invention is not limited to this.

[0010]

An embodiment will be described with reference to FIGS. FIG.
2 is a longitudinal sectional view of the camera, FIG. 2 is a transverse sectional view of the camera, FIG. 3 is a perspective view showing the periphery of the spool chamber, and FIG. 4 is an enlarged sectional view of the periphery of the spool chamber. Reference numeral 1 denotes a camera body, a dark box portion 2 for guiding subject light from a photographing lens to a film surface at a central portion thereof, and a spool chamber 3A at one end of the camera body 1 with a dark box portion 2 and a partition wall 1a therebetween. At the other end of the camera body 1, film cartridge chambers 3B are formed integrally with each other with a partition wall 1k of the dark box section 2 interposed therebetween. An aperture 1c is opened in the back surface 1b of the camera body 1, and the film F is exposed through the aperture 1c.
As shown in FIG. 3, the inner rail 4 extends along the upper and lower sides of the aperture 1c on the rear surface 1b of the camera body 1.
a, 4b are arranged, and outer rails 5a, 5b are arranged further outside of the inner rails 4a, 4b. Inner rails 4a, 4b are aperture 1c is projected 0.2mm approximately than the camera body back 1b which is opened, the outer rails 5a, 5b inner rails 4a, which projects further than 4b.

6 is a back cover for covering the back side of the camera body 1;
Reference numeral 7 denotes a front outer cover that covers the front side of the camera body 1, and 8 denotes a pressure plate provided on the back cover 6 via an elastic body 8a and urged toward the front of the camera. The pressure plate 8 includes outer rails 5a and 5a.
b.

As shown in FIGS. 2 to 4, a spool 11 is disposed at the center of the spool chamber 3, and is attached to a partition 1a of the camera body 1 around the spool chamber 3A. And a film pressing roller 13 attached to the rear outer cover 6 and urged toward the spool 11. The spool 11 locks the film F to the claw 11a. And roll it up. At this time, the film F is applied to the rollers 12,
13 enables tight winding around the spool 11.

2 and 4, a film winding circle Cmax indicated by a two-dot chain line indicates an outer circumferential circle when the film F is wound around the spool 11 most, and at this time, the roller 13 is moved to the position shown in FIG. The roller 12 deforms in the outer peripheral direction as shown by the two-dot chain line 13a, and the roller 12 similarly deforms in the outer peripheral direction as shown by the two-dot chain line 12a in FIG. Therefore, the partition wall 1a between the spool chamber 3A and the dark box section 2 is provided with a concave portion 3a for accommodating the roller 12 at the time of film maximum winding.

In FIGS. 1 and 2, reference numeral 31 denotes an upper screen size changing frame of a dusting shape, and a partition wall 1 forming a dark box portion 2.
a, 1k rotatably supported by a shaft 32. 3
Reference numeral 3 denotes a screen change operation member provided with an operation unit (not shown) outside the camera body. The upper screen size change frame 31 is provided with an ear 31a protruding therefrom.
b is engaged with the engagement groove 33a of the screen change operation member 33,
In conjunction with the operation of the screen changing operation member 33, the upper screen size changing frame 31 is rotated between the solid line position and the two-dot chain line position. Numeral 34 denotes a lower screen size changing frame of a dusting shape. Like the upper screen size changing frame 31, the lower screen size changing frame 34 is rotatably supported by the partition walls 1a and 1k forming the dark box 2 by a shaft 35. Sector gears 31c and 34c are provided on the upper and lower screen size change frames 31 and 34, respectively, and mesh with each other. Change frame 3
4 is also defined at the solid line position, and when the upper screen size change frame 31 is defined at the position of the two-dot chain line by the screen change operation member 33, the lower screen size change frame 34 is also defined at the two-dot chain line position. Here, the solid line position defines the full size,
The position of the two-dot chain line defines the panorama size.

In FIGS. 1 and 3, reference numeral 21 denotes a light-emitting element constituting a data imprinting apparatus. The light-emitting element 21 is composed of a plurality of light-emitting diodes extending in a row in the direction of the photographing optical axis. 22. Substrate 22
Is disposed on the upper surface 1 d of the camera body 1, and the drive circuit of the light emitting element 21 is mounted on the substrate 22.
Above the concave portion 3a, a substantially triangular space S (FIG. 4) surrounded by the camera body back surface 1b sandwiched between the inner rails 4a and 4b and the film winding circle Cmax is formed. Optical system of the imprinting device, for example, prism 2
3 is provided movably.

In the space S, a camera body 1 is provided as shown in FIG.
An optical chamber 24 for a data imprinting device is formed in the vertical direction of the camera as shown in FIG.
Are slidably fitted and inserted into the upper guide portion 24a of the optical chamber 24. The prism 23 has a lever 23b protruding into the dark box portion 2, and the tip of the lever 23b penetrates the partition wall 1a and is inserted and engaged in the long hole 31d of the upper screen size changing frame 31. Therefore, when the upper screen size change frame 31 rotates between the solid line position and the two-dot chain line position, the prism 23 moves vertically between the solid line first position and the two-dot chain line second position. Moving. 23c is a prism reflecting surface, and 23d and 23e are prism lens surfaces.

Illumination light directed downward from the camera from the light emitting element 21 is guided into the optical chamber 24 through a round hole 1e formed in the upper surface 1d of the camera body 1, and is refracted by 90 degrees toward the rear of the camera by the prism 23. You. When the prism 23 is at the first position shown by the solid line, the illumination light refracted in the camera rear direction by the prism 23 is transmitted to the camera body rear surface 1.
The image is formed on the film surface defined in full size through the round hole 1f opened in b. When the prism 23 is at the second position indicated by the two-dot chain line, the illumination light refracted in the camera rear direction by the prism 23 passes through the round hole 1g formed in the camera body rear surface 1b and is defined in a panoramic size. Image on the film surface. In FIG. 4, 25
A is a cover for closing the optical path of illumination light from the light emitting element 21 to the prism 23, but may be formed integrally with the partition 1a.

If the data printed on the film is, for example, 9 × 9 dot matrix characters, the light emitting element 2
1 is composed of 9 LEDs that are individually turned on and off,
1 consisting of 9 LEDs selectively turned on and off
The light emitting elements in the row emit light nine times in a light emitting cycle corresponding to the film feeding speed.

In FIG. 1, 25 is a roller, and 26 is a spring member for pressing the film F against the roller 25. The roller 25 rotates in conjunction with the film feeding. Roller 2
5, a slit disk 27 is coaxially fixed to the lower end of the rotation shaft 25a, and the photo interrupter 28 is
And outputs a pulse signal synchronized with the rotation speed. The output signal of the photointerrupter 28 indicates the film feed amount, and the pulse signal is generated by the CPU, ROM, RAM,
It is input to the control device 40 composed of other peripheral circuits.
The control device 40 controls the feed motor driver 41 based on the detected film feed amount, and controls the film feed by the feed motor 42. Reference numeral 43 denotes a screen size detection switch for detecting whether the screen change operation member indicates a full size or a panorama size. The brush 43a provided on the screen change operation member 33
And a conductive member 43 b fixed to the camera body 1. A detection signal from the switch 43 is input to the control device 40. The control device 40 controls the LED driver 44 based on the screen size detection signal and the film feeding amount to control the light emission of the light emitting element 21 and the light emission timing. 1 and 2, reference numeral 51 denotes a photographing lens,
52 is a shutter.

In the camera with the data imprinting device configured as described above, when the full size is selected by the screen changing operation member 33, the upper and lower screen size changing frames 31, 3 are selected.
4 is set to a first position indicated by a solid line in FIG. 1 to define a full-size shooting screen, and accordingly, the prism 23 is set to a first position indicated by a solid line. Accordingly, the illumination light from the light emitting element 21 is refracted by the prism 23 toward the rear of the camera, reaches the top left end of the full-size shooting screen through the hole 1f, and is transferred to the film as the transfer data 101 shown in FIG. It is.

When the panorama size is selected by the screen change operation member 33, the upper and lower screen size change frames 31, 34 are set to the second positions indicated by the two-dot chain lines in FIG. Accordingly, the prism 23 is set at the second position indicated by the two-dot chain line.
Therefore, the illumination light from the light emitting element 21 is
As a result, the light is refracted to the rear side of the camera, reaches the top left end of the panorama-size shooting screen through the hole 1g, and is printed on the film as the printing data 102 shown in FIG.

FIG. 6 shows the distances s1 and s2 between the light emitting element 21 and the principal point of the lens portion of the prism 23, the principal point of the lens portion, and the image plane of the illumination light during full size photography and panoramic size photography. S1 ′, s2 ′, and s1 <s2, s1 ′ ≒ s2 ′. And
Assuming that the height of the light emitting element 21 (the total length of the nine LEDs) is y0, the image height y1 at the time of full size shooting> the image height y2 at the time of panorama size shooting, and the imprint data on the film at the time of full size shooting Is larger than the size of the imprint data at the time of panorama size shooting. That is,
It is set that full size magnification> panorama size magnification.

Here, if the illumination light of the light emitting element 21 is properly formed on the film at the time of panoramic size photographing, the focus becomes less by (s2'-s1 ') at full size photographing. Therefore, the specifications of the lens system, the size and the spacing of the LEDs, and the like are determined so that the images of the illumination light from the LEDs do not overlap each other even when the focus becomes loose during full-size shooting.

As described above, if the illumination light of the light emitting element 21 is formed correctly on the film at the time of panoramic size photographing, the focus at the time of full size photographing becomes weak.
The sharpness of the imprinted characters and numerical values differs between full-size shooting and panoramic shooting. Therefore, if the lens system is set so as to be in the front focus state at the time of full size photographing and to be in the rear focus state at the time of panoramic size photographing, the sharpness of the imprinted characters and numerical values can be made equal in any photographing.

Further, the light emission timing of the light emitting element 21 with respect to the film feeding speed is set to be smaller in the panorama size shooting than in the full size shooting so that the aspect ratio of the character to be imprinted is equal between the full size shooting and the panorama size shooting. Preferably, it is shortened. Such light emission timing control detects the film feeding speed based on the cycle of the pulse signal obtained from the photo interrupter 28, and changes the light emitting cycle for this film feeding speed according to full-size shooting and panorama-size shooting. Can be performed.

In the above description, a camera capable of switching between the full size and the panoramic size has been described. However, in a camera capable of switching between the full size and the half size, it is desired to arrange the imprint data in the longitudinal direction of the photographing screen of any size. In this case, as in the present invention, it can be dealt with by changing the printing position in conjunction with the switching of the screen size. In this case, an optical system that rotates the arrangement direction of the LEDs by 90 degrees is required. Although the prism is used as the optical system, an optical element other than the prism may be used.

[0027]

As described above, according to the present invention, the light-emitting element is arranged on the upper surface of the camera so that the light to be projected is made to travel under the camera, and the image-forming optical system is formed by one prism. When one screen size is defined in conjunction with the switching of the screen size, data is printed at a first magnification at a first predetermined position of the shooting screen, and the other screen size is defined. Since data is sometimes projected at a second magnification at a second predetermined position on the photographing screen, for example, an apparatus for photographing data with different sizes at different positions on both photographing screens of full size and panoramic size Can be reduced in size. In addition, since one prism can be moved between the first position and the second position to change the optical path length and the imprint position at the same time, the optical path length can be changed as compared with the case where two optical systems are used. Adjustment work is simplified. Further, since the imprint light emitted from the prism is made to be perpendicularly incident on the film surface, the optical adjustment work is simplified as compared with the case where obliquely incident light is used.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a camera with a data imprinting device according to the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a perspective view of a main part of the spool chamber as viewed from the back of the camera.

FIG. 4 is a cross-sectional view showing a main part around a spool chamber in an embodiment of the camera according to the present invention.

FIG. 5 is a diagram showing data imprint positions on a full-size shooting screen and a panorama-size shooting screen.

FIG. 6 is a view for explaining a magnification of a data imprinting optical system of a full size shooting screen and a panorama size shooting screen.

DESCRIPTION OF SYMBOLS 1 Camera body 1a Partition wall 1b Camera body back surface 1c Aperture 1d Camera body upper surface 1e, 1f Round hole 1g Rectangular opening 2 Dark box 3A Spool chamber 3a Concave portion 11 Spool 12, 13 Press roller 21 Light emitting element 22 Substrate 23 Prism 24 Optical room 31 Upper screen size change frame 33 Screen change operation member 34 Lower screen size change frame S Triangular space F Film

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03B 17/24

Claims (2)

(57) [Claims] 1. A data transfer apparatus comprising: a light emitting element for irradiating illumination light for printing data on a film surface; and an optical system for forming an image of the illumination light from the light emitting element on the film surface. In a camera equipped with an embedded device and capable of switching between at least two kinds of screen sizes, the light emitting element is disposed on the upper surface side of the camera to illuminate.
The bright light travels downward from the camera, and the optical system reflects the incident surface on which the illumination light emitted from the light emitting element is incident, a reflection surface that reflects the incident illumination light toward the film surface, and the reflected light. An emission surface for emitting the illumination light is integrated, and the incident illumination light is emitted from the emission surface.
By al emitted is composed of a prism for focusing on the film surface, the prism, in conjunction with the switching of the screen size, whereas
The first predetermined position of the film specified in the screen size of
A first position at which the illumination light is imaged at a first magnification
And the film defined in the other screen size
The first predetermined position is different from the first predetermined position in the second predetermined position.
A second image forming the illumination light at a second magnification different from the magnification.
Between the first and second positions due to the difference in the optical path length.
The second magnification is held movably so as to be changed, and further, the prism is moved to the first and second respective ones.
The illumination light reflected by the reflecting surface of the prism at the position
Arranged so that it is perpendicularly incident on the film surface from the exit surface
Apparatus with a camera data imprinting, characterized in that it was. 2. The camera according to claim 1, wherein Surrounded by three elements: the spool room, the dark box, and the back of the camera
Where there is an elongated space in the vertical direction of the camera.
A rhythm is provided in the space so that it can move up and down, and
So that the illumination light enters the space from above the camera.
Turtle with data imprinting device
La.