JPH05224288A - Data imprinting device - Google Patents

Abstract

PURPOSE:To make the sizes of respective imprinted data the same at the time of printing even in the case of selecting a different image frame size. CONSTITUTION:This device is provided with 1st light emitting means 7a-7g for imprinting information on a film surface in a state where a 1st image frame size is selected, 2nd light emitting means 8a-8g for imprinting the information on the film surface in a state where a 2nd image frame size smaller than the 1st image frame size is selected, a 1st image-formation lens 10 which leads light projected from the 1st light emitting means to the film surface, and a 2nd image-formation lens 11 which leads the light projected from the 2nd light emitting means to the film surface and has 2nd image-formation magnification smaller than that of the 1st image-formation lens.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a first light emitting means for imprinting information on a film surface in a state where a first screen size is selected, and a size smaller than the first screen size. With the second screen size selected,
The present invention relates to an improvement of a data imprinting device having a second light emitting means for imprinting information on a film surface.

[0002]

2. Description of the Related Art Conventionally, a screen (aperture) is changed from a normal screen size to a panoramic shooting screen size in which the vertical direction of the screen is shortened or a half size in which the horizontal direction is shortened. A camera whose size can be switched by an external operation or the like is known.

Further, a data imprinting device for imprinting information such as a photographing date on a film surface has already been commercialized.

[0004]

Therefore, the applicant of the present application is considering incorporating the above-mentioned data imprinting device into a camera capable of changing the screen size, but has the following problems. It was

In other words, as a data imprinting apparatus that is likely to be applicable to such a camera, there is a system having two imprinting light emitting elements and selecting either one in accordance with the set screen size. However, due to the change in screen size, the enlargement ratio when printing is different,
The size of the letters printed on the print varies. More specifically, when printing with a small screen size and a large enlargement ratio, the imprinted characters are also expanded at the same magnification, so the area occupied by the imprinted characters on the screen increases. ,
It's an unsightly photo.

In order to solve the above problem, it is conceivable to make one of the two light emitting elements for imprinting small, but there is a limit to downsizing the light emitting element for imprinting. It was difficult.

In addition, in the structure including the two light-emitting elements for imprinting as described above, it is generally performed that they are respectively mounted on different surfaces. However, when they are mounted on such different surfaces, There were variations in the optical precision such as the focus of imprinted characters.

In view of the above points, an object of the present invention is that even if different screen sizes are selected, at the time of printing, the size of each imprinted data is made substantially equal and the optical precision of each is made uniform. It is an object of the present invention to provide a data imprinting device that can achieve a simple and simple circuit configuration.

[0009]

According to the present invention, in the state where the first screen size is selected, the first light emitting means for imprinting information on the film surface, and the first screen size The second light emitting means for imprinting information on the film surface and the first light guiding means for projecting the light projected by the first light emitting means to the film surface in the state where the second screen size which is smaller than the above is selected. Image forming lens and a second image forming magnification having a second image forming magnification smaller than that of the first image forming lens for guiding the light projected from the second light emitting means to the film surface. Equipped with an imaging lens, so that the imaging magnification of the emitted light on the film surface can be changed according to the screen size.
That is, when the second screen size is selected, the first screen
The data is imprinted with a smaller character than when the screen size is selected.

Further, a substrate for mounting each of the first light emitting means and the second light emitting means is provided, and these are arranged on a single substrate.

Further, a driving means for discriminating the screen size of the camera and driving either the first light emitting means or the second light emitting means corresponding thereto is provided, and these are driven by a single driving means. I am trying to drive.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the illustrated embodiments.

FIG. 1 is a block diagram showing the construction of the main part of a camera equipped with a data imprinting apparatus according to the first embodiment of the present invention.

In FIG. 1, 1 is a micro computer for controlling the sequence of the apparatus, 2 is a ROM for storing programs and data contents to be copied, and 3 is a RAM for storing data. Reference numeral 4 is a liquid crystal display for displaying the contents of the data to be imprinted. Reference numeral 5 denotes a selection switch for selecting a screen size. When the selection switch 5 is OFF, the first screen size (normal screen size) is selected, and when it is ON, the second screen is selected. The size (panorama size in this embodiment) is configured to be selected. 6 is an LED drive circuit, 7a
7g is the first LED (light emitting element) for imprinting, 8a
8g is the second LED for imprinting, and 9 is the shooting sequence of the camera.
It is a camera control circuit that controls the can and detects the moving state of the film to generate a sync pulse for imprinting.

FIG. 2 is a perspective view showing two imprinting optical systems and a state in which they are imprinted on a film surface by the optical system.

In FIG. 2, 10 is a first image-forming lens for imprinting, 11 is a second image-forming lens for imprinting, 12 is a film, and 13 is a first and second LED 7a for imprinting.
~ 7g, 8a ~ 8g.

FIG. 3 is a diagram showing a photographing screen in the first screen size, the size of the imprinted character, and the imprinting position.

FIG. 4 is a diagram showing a photographing screen in the second screen size, the size of the imprinted character, and the imprinting position.

FIG. 5 is a circuit diagram showing an LED drive circuit section arranged inside the LED drive circuit 6.

In FIG. 5, 14 is a constant current circuit for driving an LED, and 15 and 16 to 22 are PNPs having a current mirror configuration.
It is a transistor, and its collector is connected to the anodes of the first and second imprinting LEDs 7a to 7g and 8a to 8g, respectively. Reference numerals 23 to 29 are NPN transistors that control switching for each dot, and their collectors are connected to the collectors of the PNP transistors 16 to 22, respectively.

FIG. 6 is a circuit diagram showing an LED selection circuit portion arranged inside the LED drive circuit 6.

In FIG. 6, reference numerals 30 and 31 are NPN transistors, 32 is a PNP transistor, and 33 to 38 are resistors.

The collector of the NPN transistor 30 is connected to the cathode which is the common terminal of the first imprinting LEDs 7a to 7g, and the collector of the NPN transistor 31 is the common terminal of the second imprinting LEDs 8a to 8g. It is connected to a certain cathode.

FIG. 7 shows the above-mentioned first and second imprinting L.
It is a figure which shows the board | substrate which mounted ED7a-7g and 8a-8g.

As shown in this figure, the first LE for imprinting
D7a-7g and the second imprinting LEDs 8a-8g are 1
Each chip is bonded and mounted. Symbols such as A1 in the figure are signal names. Needless to say, the respective LED chips are mounted as close to each other as possible.

Next, the operation of the above configuration will be described. The actual switching of the screen size is performed by switching the position of the screen light shielding member (not shown) in conjunction with the change of the selection switch 5, but the description thereof will be omitted here.

When the first screen size is selected and the selection switch 5 is turned off, the NPN transistor 30 is turned on.
However, since the cathode, which is the common terminal of the first imprinting LEDs 7a to 7g, becomes the ground level, the lighting signal D
The LEDs 7a to 7g input by 0 to D6 are turned on, and imprinting is performed. On the other hand, in this state, the NPN transistor 3
Since 1 is turned off, even if the lighting signals D0 to D6 are input, the second imprinting LEDs 8a to 8g do not light because the cathode side is not selected.

On the other hand, when the second screen size is selected and the selection switch 5 is turned on, the NPN transistor 30 is turned off.
Since the FF is turned on and the NPN transistor 31 is turned on, the second
The cathode side of the imprinting LEDs 8a to 8g is selected, the LEDs 8a to 8g to which the lighting signals D0 to D6 are input are lit, and imprinting is performed.

Here, regarding the size of the characters to be imprinted, as shown in FIG. 7, as the light emitting means, 7-dot LEDs mounted at a predetermined pitch are mounted on the substrate 13 in the same size. The size of characters on the screen is changed by changing the magnification of the optical system. That is, the power of the imaging lens 10 and its setting position are determined by the value calculated by the distance between the substrate 13 and the film 12 and the first optical magnification, and similarly, the power of the imaging lens 11 is determined. And its installation position are the substrate 13 and the film 1
It is set to a value calculated by a distance from 2 and a second magnification smaller than the first magnification.

As a result, when the second screen size is selected, characters smaller than those when the first screen size is selected are imprinted.

Since the two imprinting LEDs are all mounted on the same substrate 13, the distance between the substrate 13 and the two imaging lenses 10 and 11 or the distance between the substrate 13 and the film 12 is large. If the accuracy of is obtained, there is no variation in focus between the two optical systems.

Next, regarding the operation of the camera such as the data imprinting operation, since it is not directly related to the present invention,
Only its outline will be described below.

First, when the first stroke of a shutter button (not shown) is performed, photometry and distance measurement are performed, and when the second stroke is performed, the lens is driven according to the result of the photometry and distance measurement. Then, the shutter opening / closing control is performed, and the film 12 is exposed. Then, the feeding motor for winding the film is driven to start winding the film. The imprinting operation is performed during the film winding. That is, the moving state of the film is detected, and the first imprinting LEDs 7a to 7g or the second imprinting LE is synchronized with this movement.
D8a to 8g are appropriately driven (lighted), and characters are formed in time series. In other words, the above LED is blinked and imaged in synchronization with the timing given by the camera control circuit 9. After that, when the imprinting is completed and the film winding for the predetermined size is completed, the feeding motor is stopped and a series of photographing operations is completed.

FIG. 8 is a diagram showing another example of mounting the imprinting LED on the substrate 13.

In FIG. 7, a required number of LED chips are provided on the substrate 1.
Although the example mounted on 3 was shown, as shown in FIG.
The dots may be of a monolithic structure in which dots are optically and electrically isolated on one chip, and by doing so, the following effects can be produced.

That is, by adopting the monolithic structure, it is possible to reduce the mounting area as compared with the case of the multi-chip structure of the example of FIG. 7, and it is possible to mount without positional variations between the chips.

(Second Embodiment) FIG. 9 is a perspective view showing the structure of the essential parts of a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals.

The difference from the first embodiment is that the mirror 39,
40 using the first and second imprinting LEDs 7a to 7
The point is that the light from g, 8a to 8g is guided to the imaging lenses 10 and 11. With this configuration, the camera can be made more compact.

According to each of the above-mentioned embodiments, the imaging magnification when the light of the second imprinting LEDs 8a to 8g is imaged on the surface of the film 12 is the imaging of the first imprinting LEDs 7a to 7g. Since the image forming lens 11 having a size smaller than the magnification is arranged, the size of the imprinted character does not differ even if the enlargement magnification at the time of printing is different. Further, when the screen size is reduced, it is necessary to reduce the size of the imprinting LED, but by arranging the optical system with the imaging magnification changed in this way, such a problem can be eliminated.

Further, as shown in FIG. 7 or 8, the first imprinting LEDs 7a to 7g and the second imprinting LED 8 are provided.
Since a to 8 g are mounted on the same substrate 13, variations in optical accuracy such as focus are eliminated.

Further, the first imprinting LEDs 7a to 7 are provided.
g and the second imprinting LEDs 8a to 8g are controlled by the same LED drive circuit 6, the circuit configuration is simpler than that having the respective LED drive circuits, and the cost is reduced. Will also be advantageous.

[0042]

As described above, according to the present invention,
In a state in which the first screen size is selected, a first light emitting unit for imprinting information on the film surface and a second screen size smaller than the first screen size are selected. A second light emitting means for imprinting information on the film surface, a first imaging lens for guiding the light projected from the first light emitting means to the film surface, and a second light emitting means. Guide the projected light to the film surface,
A second imaging lens having a second imaging magnification that is smaller than the imaging magnification of the first imaging lens, and the imaging magnification of the emitted light on the film surface is adjusted according to the screen size. Differently, that is, when the second screen size is selected, the data is imprinted with smaller characters than when the first screen size is selected.

Further, a substrate on which the first light emitting means and the second light emitting means are mounted is provided, and these are arranged on a single substrate.

Further, a driving means for discriminating the screen size of the camera and driving either the first light emitting means or the second light emitting means corresponding thereto is provided, and these are driven by a single driving means. I am trying to drive.

Therefore, even if different screen sizes are selected, the size of each imprinted data is made the same at the time of printing, the optical precision of each is made uniform, and the circuit configuration is made. It becomes possible to make it simple.

[Brief description of drawings]

FIG. 1 is a block diagram showing a main configuration of a camera provided with a device according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a main configuration of a projection optical system according to a first embodiment of the present invention.

FIG. 3 is a diagram for explaining the size of imprinted characters and the like when the first screen size is selected by the device according to the first embodiment of the present invention.

FIG. 4 is a diagram for explaining the size of the imprinted character and the like when the second screen size is selected by the device according to the first embodiment of the present invention.

5 is a circuit diagram showing an LED drive circuit unit in the LED drive circuit of FIG. 1. FIG.

FIG. 6 is a circuit diagram showing an LED selection circuit unit in the LED drive circuit of FIG.

FIG. 7 is a diagram showing a mounting state of each imprinting LED of FIG. 1 on a substrate.

FIG. 8 is a view showing a mounting state of each of the imprinting LEDs of FIG. 1 different from FIG. 7 on a substrate.

FIG. 9 is a perspective view showing a main configuration of a projection optical system according to a second embodiment of the present invention.

[Explanation of sign]

 6 LED drive circuit 7a-7g 1st imprinting LED 8a-8g 2nd imprinting LED 10,11 Imaging lens 12 Film 13 Substrate

Claims (3)

[Claims] 1. A first light emitting means for imprinting information on a film surface and a second screen size smaller than the first screen size when the first screen size is selected. In a selected state, a second light emitting means for imprinting information on the film surface, a first imaging lens for guiding the light projected from the first light emitting means to the film surface, and the first image forming lens. A second image forming lens having a second image forming magnification smaller than that of the first image forming lens and guiding the light projected from the second light emitting means to the film surface. A data imprinting device. 2. A substrate for mounting each of the first light emitting means and the second light emitting means is provided.
The described data imprinting device. 3. A drive means for determining the screen size of the camera and driving either the first light emitting means or the second light emitting means corresponding to the screen size. Alternatively, the data imprinting device described in 2.