JPH11223872A - Camera capable of imprinting data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera which is thin even when it is equipped with a data imprinting device. SOLUTION: This camera is equipped with a circuit board 1 arranged at the upper part of a camera main body, a data imprinting light source 2 disposed on the board 1, a transmission type liquid crystal display body 5 disposed on the board 1 and displaying data such as date, etc., an image-formation optical system 6 arranged to be inclined so that the display board 5 and the photosensitive surface of the film 9 may be in conjugate relation, a condenser lens 4 disposed between the light source 2 and the display body 5 so that light from the light source 2 transmitted through the display body 5 may form an image on the optical system 6, and a reflection member 7 arranged between the optical system 6 and the photosensitive surface of the film 9 and guiding the optical axis of data imprinting light formed by the light source, the display body, the condenser lens and the image-formation optical system to the film surface.

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, and more particularly, to a camera capable of imprinting data which has been improved to be thin.

[0002]

2. Description of the Related Art As a data imprinting device in a camera, a data imprinting device which is widely used at present is provided in a camera back cover 101 as shown in FIG. In many cases, data such as characters is printed on a film.

That is, a pressure plate for holding a film is placed in a back cover 101.
The electric circuit board 104 is arranged on the back side of the
A light source lamp 105 for data imprinting, a reflection mirror 106, and a liquid crystal display 107 composed of an LCD are disposed on the light source lamp 104, respectively.
5 is reflected forward by a right angle by the reflection mirror 106, transmits data such as characters displayed negatively on the liquid crystal display 107, and transmits the film 102 through an aperture 103 a formed in the pressure plate 103. The data is printed on the film from the back side of the camera. The liquid crystal display 107 has a liquid crystal surface 107a.
Are sandwiched between glass plates 107b.
Are arranged on both sides of a polarizing plate 107c.

On the other hand, a data imprinting apparatus in which data is imprinted from the front side of the film, as opposed to an apparatus in which data is imprinted from the back side of the film as described above, is also known from Japanese Utility Model Publication No. 51-249. It is known from the gazette, furthermore, a data imprinting device is mounted on the back of the camera,
A data imprinting device that introduces data into the camera from outside the camera by an imaging optical system and projects the above data from the back of the film to reduce the thickness of the camera body is also disclosed in Japanese Utility Model Publication No. 51-16285. Are known.

[0005]

However, FIG.
As shown in FIG. 13, when the imprinting device is arranged in the back cover like the conventional data imprinting device shown in FIG. 1, a clock mechanism and an LCD driver 108, an external data display liquid crystal 109, Each function of the data setting and change operation switch 110, the light source lamp 105, the liquid crystal display 107, and the like can be provided.
There are also significant benefits on the system. However, with this conventional device, the thickness of the back cover becomes thicker than a camera having no data imprinting device, and the portability of the camera is deteriorated. Also, the data imprinting light source lamp 105
However, as shown in FIG. 12A, the line width of the character is increased when the liquid crystal display body 107 is close to the liquid crystal display body 107 for forming data characters, so that the light passing through the liquid crystal display body 107 needs to be close to parallel light. Therefore, as shown in FIG. 12B, the liquid crystal display 107 and the light source lamp 105 must be separated from each other, which hinders downsizing of the substrate.

On the other hand, when a data imprinting device for imprinting from the front side of a film as shown in the above-mentioned Japanese Utility Model Publication No. 51-249 is used, the thickness of the camera becomes exactly the same as a camera having no data imprinting device. There is no increase in camera thickness. However, considering the light quantity at the time of imprinting, in order to obtain the same light quantity as the conventional apparatus of FIG.
As shown in FIG. 14A, the light of the light source lamp 115 cannot be obtained merely by passing through the slits forming the characters of the liquid crystal display 117, and as shown in FIG. Lens) 111, and when the lens 111 is separated from the liquid crystal display 117, a large lens is required. An increase in the size of the objective lens 111 hinders a compact camera.

Therefore, when the size of the objective lens 111 is reduced as shown in FIG. 14 (C), the amount of peripheral light is reduced and the brightness of the data characters becomes uneven. To prevent this unevenness, FIG.
As shown in (D), the light of the light source lamp 115 is
May be disposed near the liquid crystal display 117 and light transmitted through the display 117 may be diffused in the vicinity of the display 117. However, when the light is diffused in this manner, the entire light amount is reduced. Therefore, it is necessary to use the high-intensity light source lamp 115 this time. Becomes shorter. There is also a method of extending the light emission time without increasing the capacity of the light source lamp.However, extending the light emission time not only increases the current consumption but also adversely affects the camera operation sequence such as the timing of exposure and film winding. Will be exerted. Further, when considered as a system, it is advantageous to have various functions relating to data imprinting on the same substrate (see FIG. 13) as in the conventional example shown in FIG. 11 described above.
When arranged like the data imprinting device described in Japanese Patent Application Laid-Open No. 1-249, a data display window 116 and a setting operation button 118 are arranged at a position closer to the front side of the camera body 114 as shown in FIG. In addition, when the finger holding the camera is applied, not only is it invisible and the usability is deteriorated, but also, as shown in FIG. 15, the film cartridge 119 disposed near one side of the lens optical axis of the taking lens 121 of the camera. Since the substrate 104 configured as described above is disposed around the front of the storage chamber (or the spool chamber) 120, the thickness A of the camera body 114 in front of the camera increases. .

In consideration of the recent increase in cameras with built-in zoom lenses, as shown in FIG. 17, a cam barrel 124 for moving a zoom lens 123 supported by a lens holding frame 122 in the optical axis direction and a cam barrel 124 for moving the zoom lens 123 are shown. For a zooming driving member such as a zoom operation cylinder 125 that operates the cam cylinder 124,
Notch 1 largely cut out to transmit data light
The holes 24a and 125a have to be drilled, resulting in an adverse effect on the strength and accuracy of the lens barrel.

On the other hand, even when an objective lens is used as in the data imprinting apparatus described in Japanese Utility Model Publication No. Sho 51-16285, if the optical system is provided on the back cover side, the thickness of the back cover increases.

The present invention has been made in view of these circumstances, and an object of the present invention is to provide a small camera having a small thickness even in a camera provided with a data imprinting device.

[0011]

According to a first aspect of the present invention, there is provided a camera capable of imprinting data, comprising: a circuit board for imprinting data; A data display unit that displays data above the camera, and a data display body that is provided on the circuit board and copies the desired data onto a film surface, wherein the circuit board is disposed above the camera. It is characterized by. According to a second aspect of the present invention, there is provided a camera capable of imprinting data, a circuit board for imprinting data, and a data board provided on one side of the circuit board for displaying desired data above the camera. A display portion, a data display member provided on the other surface side of the circuit board, for copying the desired data on a film surface; and data provided on the circuit board for setting and changing the desired data. And an operation switch, wherein the circuit board is disposed above the camera.

Further, a camera for imprinting data according to the third aspect of the present invention is provided with a circuit board for imprinting data, and is provided on one side of the circuit board so that desired data can be transferred upward of the camera. A data display portion to be displayed, a data display member provided on the other surface side of the circuit board to copy the desired data on a film surface, and a data display member provided on one surface side of the circuit board to provide the desired data And a data operation switch operable to set or change the setting above the camera, wherein the circuit board is disposed above the camera.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing an embodiment of the present invention, a data imprinting apparatus used in this embodiment will be described. As shown in the conceptual diagram of FIG. 1, the data imprinting apparatus includes a circuit board 1 disposed on an upper portion of a camera body, a data imprinting light source 2 disposed on the circuit board, And a transmission type liquid crystal display 5 for displaying data such as date, and an imaging optical system 6 which is inclined and disposed so that the display and the photosensitive surface of the film 9 have a conjugate relationship. A condenser lens 4 disposed between the light source and the display so that the light from the light source 2 transmitted through the display 5 forms an image on the imaging optical system 6;
The optical axis of the data imprinting light, which is arranged between the imaging optical system 6 and the photosensitive surface of the film 9 and is formed by the light source, the display, the condenser lens, and the imaging optical system, is arranged on the film surface. And a reflection member 7 for guiding the light, wherein the reflection member 7 is arranged so as not to disturb the photographing light beam. The light from the light source 2 is reflected by the reflection mirror 3 and enters the condenser lens 4. The liquid crystal display 5 is attached to the circuit board 1 via the conductive rubber connector 10.
Reference numeral 8 denotes a photographing lens.

In the data imprinting apparatus constructed as described above, a liquid crystal for data display, a liquid crystal for imprinting data, an operation member for data setting, a clock mechanism and the like are arranged on a single circuit board 1, and This substrate is disposed on the upper part of the camera body so that the display is easy to see and operate, and the condenser lens 4 is disposed between the light source 2 and the liquid crystal display body 5 for imprinting data. The distance from the body 5 is reduced, the size of the substrate 1 is reduced, and the condenser optical system 4 is made to have a small and compact optical system of an imaging optical system 6 composed of an objective lens by the condensing action. Since the data surface of the liquid crystal display 5 for imprinting data and the photosensitive surface of the film 9 are disposed at an angle of about 90 °, the data is imprinted at a predetermined position on the photosensitive surface of the film 9. In addition, a reflecting member 7 composed of a mirror is used, and the imaging optical system 6 is arranged in a positional relationship that is conjugate with the film 9 and the liquid crystal display 5 in order to form an image more correctly.

The function of the condenser lens 4 is as follows. In order to capture an image without loss of light amount when the condenser lens 4 is not provided, as described with reference to FIGS. 111 is required. However, when the condenser lens 4 is used as in the present invention, effective light is condensed on the objective lens of the imaging optical system 6 as shown in FIG. . In addition, even if the distance between the light source 2 and the liquid crystal display 5 is shortened, FIG.
Since there is a condenser lens 4 as shown in FIG.
As shown in the figure, without increasing the size of the objective lens 6,
It becomes possible to arrange compactly. The fact that the objective lens 6 may be small means that the reflecting member 7 may also be small. Further, by arranging the objective lens 6 and the reflecting member 7 at an angle so as to have a symmetrical positional relationship, the optical system can be arranged with the film 9 close to the side.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 4 is a longitudinal sectional view of a main part of a data imprinting apparatus showing a first embodiment of the present invention. The data imprinting apparatus of the first embodiment and a second
The components and their arrangement in the data imprinting apparatus of the third embodiment are completely the same as those of the data imprinting apparatus described in the conceptual diagram of the present invention in FIG. Members are given the same reference numerals,
The description of the configuration and arrangement is omitted.

In each of the embodiments described below,
As shown in FIGS. 5A, 5B and 5C, an external data display liquid crystal 11, a clock / liquid crystal driver IC 1 is provided on an electric circuit board 1.
2, a unit 13 for integrating the data switching operation switch 13 and the constituent members of the data imprinting liquid crystal display 5 attached via the reflection mirror 3, lamp light source 2, condenser lens 4 and conductive rubber connector 10. Is used.

As shown in FIG. 4, each of the constituent members united with the circuit board 1 is disposed along the exterior upper wall surface 14a in the upper portion of the camera body 14, as shown in FIG.

In the first embodiment, the data imprinting apparatus of the present invention is incorporated in a well-known compact camera, and the subject light transmitted through the photographic lens 8 is focused on the film 9 to be formed. The film 9 is disposed at a predetermined position with its back surface pressed by a pressure plate 16 attached to a back cover 15 by a leaf spring, with high planar accuracy. In addition, a strobe unit 17 and an AF unit 18 are arranged on the upper front side in the camera body 14, respectively.

In the data imprinting apparatus incorporated as described above, the light of the lamp light source 2 is radiated backward along the substrate 1 and is reflected downward by the reflection mirror 3 to form a condenser. The light passes through the lens 4 and passes through the data imprinting liquid crystal display 5. The above condenser lens 4
Is set so as to form an image of the filament of the lamp light source 2 at the position of the objective lens 6, and the liquid crystal display 5, the objective lens 6, and the film 9 are positioned at positions conjugate with the total reflection mirror 7. Because of the relationship, the data imprinted characters on the liquid crystal display 5 form a clear data image on the photosensitive surface of the film 9. The total reflection mirror 7 serving as a reflection member
Is arranged so as to reflect the data light toward the film surface through an opening 14c in which a part of an upper part of a dark box 14b in the camera body 14 is cut out so as not to vignet the photographing light flux 19.

According to the data imprinting apparatus of the first embodiment, which imprints desired data by being incorporated as described above, the external data display liquid crystal 11 and the data switching operation switch 13 (see FIG. 5) ) Is arranged on the same side of the substrate 1 as the lamp light source 2, so that the display window 11 a of the external data display liquid crystal 11 and the data switch switch 13 are provided on the upper surface 20 a of the camera 20 as shown in FIG. Since the switch buttons 13a can be provided respectively, it is very easy to see and operate, and the display window 11a is not covered with the fingers of the camera. Further, since the condenser lens 4 is used, the distance between the liquid crystal display 5 and the lamp light source 2 can be shortened (see FIG. 3B), and as shown in FIG. Since the size in the front-rear direction along the optical axis can be reduced and the substrate 1 can be formed compactly, the thickness of the entire camera does not increase even if it is disposed in the upper part in the camera body 14.

Further, according to this arrangement, the data imprinting optical system is disposed rearward in the camera body 14, and only a thin substrate portion is disposed on the front in the camera body 14; 17, AF unit 18
And the like can be arranged in the same manner as in the prior art, and there is no problem caused by incorporating the data imprinting device.

FIG. 7 shows a second embodiment of the present invention. In the second embodiment, the data imprinting device of the present invention is incorporated in a known camera having a zoom lens. A lens moving mechanism for causing the zoom lenses 21a and 21b to perform a zoom operation includes a holding member 22a that supports the normal zoom lenses 21a and 21b, respectively.
A mechanism for moving 22b in the optical axis direction using a cam slot and a driving pin or a helicoid screw is used. In the present embodiment, a rotating cam cylinder 23 having a cam slot is provided as a fixed cylinder 24. A description will be given of a zoom lens that employs a lens moving mechanism that rotates with respect to a cam slot and a pin.

The rotary cam barrel 23 has a zoom lens 21a.
The cam slots 23a and 23b into which the driving pins 25a fixed to the holding member 22a and the driving pins 26a fixed to the holding member 22b of the zoom lens 21b are respectively inserted.
The fixed cylinder 24 is fixed to an immovable member of the camera body 14, and the drive pins 25a and 26a are inserted through the cylindrical body (see FIG. 8A). It is formed of a tubular body having perforated straight grooves 24a and 24b (see FIG. 8B). And this fixed cylinder 24
The rotatable cam cylinder 23 is rotatably fitted on the outer periphery of the drive pin 25a, 2b of the holding members 22a, 22b.
6a are inserted into the cam grooves 23a, 23b of the rotary cam barrel 23 after passing through the straight grooves 24a, 24b, respectively. The rotary cam barrel 23 is configured to rotate during zooming by a zoom operation ring (not shown). In the case of telephoto zoom by rotation of the cam barrel 23, the driving pins 25a are formed by the cam slots 23a and 23b. , 26a move forward and the zoom lens 21
a and 21b are extended to a telephoto position indicated by a solid line. In the case of a wide-angle (Wide) zoom, the cam slots 23a, 23
The drive pins 25a and 26a are moved rearward by b, and the zoom lenses 21a and 21b are retracted to the wide angle position indicated by the dotted line.

As described above, the data imprinting apparatus of the present invention is incorporated in a camera with a zoom lens having a zoom lens mechanism in the same manner as in the first embodiment.
In this case, data must be printed through the rotating cam cylinder 23 and fixed cylinder 24. In this case, as described in the conventional example of FIG. 17, in order to print the data onto the film 9 from the oblique front inside the camera body 14, the rotating cam barrel 23 and the fixed barrel 24 are used to transmit the data light. Notch opening 23 cut out
c and 24c (see FIGS. 8A and 8B) become very large.

However, if the arrangement is made like the data imprinting device of the present invention, the data light passing through the rotary cam barrel 23 and the fixed barrel 24 as shown in the second embodiment of FIG.
Since it is substantially perpendicular to the central axis of the two tubes 23 and 24, that is, the lens optical axis O, the width d (see FIG. 8) of the cutout openings 23c and 24c in the optical axis direction is substantially equal to the width of the data beam. It will be good.

On the other hand, since the objective lens 6 and the reflecting mirror 7 are formed very small due to the light condensing effect of the condenser lens 4, the height of the light rays in the vicinity thereof is naturally reduced (see FIG. 3B). Therefore, the width d of the notch openings 23c and 24c is also reduced, and the accuracy of the rotary cam cylinder 23 and the
The camera can be made thinner as in the first embodiment without adversely affecting the strength.

As shown in FIG. 7, the objective lens 6 and the mirror 7 serving as a reflection member do not vignet the photographing rays 27 and 28 at the time of Tele zoom and Wide zoom, and at the same time, interfere with the lens barrel parts at the time of Wide zoom. According to the present embodiment, the reflecting mirror 7 formed small as shown in FIG. 7 can be disposed so as to be located in the cutout openings 23c and 24c. , 28 do not interfere with the lens barrel parts.

Although the second embodiment has described the zoom mechanism using a rotary cam barrel with a cam slot and a drive pin, the same applies to a zoom mechanism using a helicoid screw. Of course, the present invention can be applied.

FIG. 9 shows a third embodiment of the present invention, in which the data imprinting device of the present invention is incorporated in a retractable camera. . 2. Description of the Related Art Conventionally, as a method of reducing the thickness of a camera, a method of retracting a lens barrel in a camera body when carrying the camera is often employed. When a data imprinting device is incorporated in a camera employing the retractable camera, it is an essential condition that the collapsible lens barrel does not interfere with the data imprinting optical system.

Normally, as shown in FIG. 10, this collapsible camera includes a lens barrel 30 holding a photographing lens 29,
It is moved by a feed screw 32 disposed in the camera body 31. Therefore, the thickness of the camera becomes thinner as the collapsing amount increases, but the rear end of the lens barrel 30 approaches the front surface of the film 9. The collapsible camera thus configured is provided with a data imprinting device including a lamp light source 33, a data imprinting liquid crystal display 34, an objective lens 35, and the like, and imprints data obliquely from the front of the film surface. In this case, the lens barrel 30 can be largely collapsed by forming a notch opening 30a through which the rear end portion of the lens barrel 30 is cut out to allow a data beam to pass. However, when the lens barrel 30 having such a large cutout opening 30a is extended, the cutout opening 30a is located at the front part of the camera body 31, so that extraneous light enters the camera body 31 from the cutout opening 30a. And cause light leakage.
In this regard, according to the data imprinting apparatus of the present invention, such a drawback of the retractable camera does not occur.

That is, if the data imprinting device is incorporated in the retractable camera as in the third embodiment of the present invention shown in FIG.
The arrangement of the components of the apparatus is as shown in FIG. 9. The small objective lens 6 due to the effect of the condenser lens 4 and the data recording optical system of the reflection mirror 7 are compactly arranged at a position close to the photosensitive surface of the film 9. You.

Therefore, according to the present embodiment, it is not necessary to provide a notch opening at the rear end of the photographing lens barrel 30, and the circuit board 1 is dimensioned by the condenser lens 4 as described above (FIG. 5). In addition to the fact that the substrate is small, it is possible to provide a thin collapsible camera having a large collapsible amount which does not cause light leakage even when a data imprinting device is incorporated.

[0035]

As described above, according to the present invention, there is an effect that the thickness can be reduced even in a data imprinting camera.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a data imprinting apparatus used in an embodiment of the present invention.

FIG. 2 is an optical system diagram for explaining the operation of a condenser lens in the data imprinting apparatus shown in FIG.

FIG. 3 is an optical system diagram for explaining the operation of a condenser lens in the data imprinting apparatus shown in FIG. 1;

FIG. 4 is a cross-sectional view showing an example in which the data imprinting device according to the first embodiment of the present invention is incorporated in a compact camera.

5A and 5B are diagrams showing a circuit board in which the data imprinting device is unitized, wherein FIG. 5A is a plan view of the circuit board unit, and FIG. 5B is a cross-sectional view taken along line XX of FIG. , (C) Y of (A)
Sectional view along the -Y line

FIG. 6 is a perspective view of a compact camera in which the data imprinting device is incorporated.

FIG. 7 is a sectional view of a data imprinting apparatus according to a second embodiment of the present invention, which is incorporated in a camera with a zoom lens.

8 is a perspective view showing a rotating cam barrel and a fixed barrel in the camera with the zoom lens of FIG. 7;

FIG. 9 is a sectional view of a data imprinting device according to a third embodiment of the present invention, which is incorporated in a retractable camera.

FIG. 10 is a sectional view in which a conventional data imprinting device is incorporated in a retractable camera.

FIG. 11 is a sectional view of a conventional data imprinting apparatus for imprinting data from the back side of a film.

FIG. 12 is an optical diagram showing a relationship between a data imprinting lamp light source and a data imprinting liquid crystal display.

FIG. 13 is a plan view of a circuit board and components arranged on the board in a conventional data imprinting apparatus.

FIG. 14 is an optical diagram showing each example of a data imprinting optical system.

FIG. 15 is a cross-sectional view of a main part when a conventional data imprinting device is disposed on the front side in the camera body.

FIG. 16 is a perspective view of a camera in which the data imprinting device of FIG. 15 is incorporated.

FIG. 17 is a sectional view of a main part when a conventional data imprinting device is incorporated in a camera with a zoom lens.

FIG. 18 is an optical diagram when an objective lens is used in a data imprinting optical system.

FIG. 19 is an optical diagram showing a conventional data imprinting optical system using a condenser lens.

[Explanation of symbols]

 1: Circuit board 2: Light source for data imprinting 5: Liquid crystal display 11: Liquid crystal for external data display 13: Switch for data switching operation

Claims (3)

[Claims] 1. A circuit board for imprinting data, a data display unit provided on the circuit board and displaying desired data above a camera, and a data display unit provided on the circuit board and displaying the desired data on a film surface. And a data display body to be printed on the top, wherein the circuit board is arranged on an upper part of the camera. 2. A circuit board for imprinting data, a data display unit provided on one side of the circuit board and displaying desired data above the camera, and a data board on the other side of the circuit board. A data display for providing the desired data on a film surface; and a data operation switch provided on the circuit board for setting and changing the desired data. A camera capable of imprinting data, which is arranged at the top of the camera. 3. A circuit board for imprinting data, a data display section provided on one surface of the circuit board and displaying desired data above the camera, and a circuit board on the other surface of the circuit board. A data display for providing the desired data on a film surface; and a data operation switch provided on one surface side of the circuit board for setting and changing the desired data above the camera. A camera capable of imprinting data, comprising: and a circuit board disposed above the camera.