JPS6064338A - Data imprinting device - Google Patents

Abstract

PURPOSE:To superpose data of size matching with the side of an image by arranging a variable magnification optical system in an optical path which guides an image of display data to a photographing device, and adjusting the magnification. CONSTITUTION:A data imprinting device 9 is connected to a camera 11 for an endoscope through a connection cylinder 10. Data (name, date of birth, date, etc.) to be imprinted are inputted on an unshown keyboard, and displayed through a liquid crystal display plate LCD13, by the lighting of a light emission diode 14. A zoom mechanism 15 is driven through a zoom drive control circuit 20 with a command from a magnification control circuit 18 and the illuminance of the light emission diode 14 is brought under control 19. The data on the LCD13 from the variable magnification optical system 12 are made incident to a photodetecting element 26 through a beam splitter 24a to perform photoelectric conversion, and the result is inputted to a photometric circuit 27. The output of the photometric circuit 27 is fed back to a magnification control circuit 18 and compared with a reference value to correct the magnification and brightness according to a photographed image. Consequently, the size, etc., of the data on the surface of a film 25 are adjusted freely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a data imprinting device that can change the imprinting magnification.

[Prior art] Inside? When making a diagnosis by inserting a 1m endoscope into a body cavity, a camera is connected to the eyepiece of the endoscope and the affected area to be examined is photographed with this camera in order to make a more accurate diagnosis.

At this time, data such as the patient's name, gender, date of birth, birth number, medical record number, examination date, etc. must be imprinted on the first frame of the photographic film in order to identify the photograph after the photograph has been taken. There is. Therefore, conventionally, JP-A-58-12
It had a configuration as described in Publication No. 639.

That is, as shown in FIG. 1, a holder 4 that holds a data carrier 3 is removably attached to the optical 11 device 11 on the optical axis of a lens 2 fixed to the optical 8i device 1, and the data carrier 3 is used as a light source. Illuminate at 5. Then, on the optical axis of lens 2, there is a lens 6.
The camera 8 was fixed to the optical device 1 with the optical axes of the cameras aligned, and the data was recorded onto the film 7. By the way, while the magnification of an endoscope-specific camera or a camera attached with an internal W4 mirror adapter (hereinafter referred to as an endoscope imaging device) is not necessarily constant, in the conventional configuration described above, the magnification of lens 2 is constant. Therefore, the size of the imprint data on the film surface changes depending on the imaging magnification of the endoscope imaging device. That is, when the photographic magnification is small, the data is imprinted in a small size and is difficult to read, and when the photographic magnification is high, the data is imprinted so large that it protrudes from the film.

[Object of the Invention] The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a data imprinting device that can set imprint data, etc. on the film surface to an appropriate size regardless of the photographing magnification. With the goal.

[Summary of the invention] In this invention, an image of data displayed in a data imprinting device is guided to a photographing device (a variable magnification optical system is disposed in the optical path).

[Embodiment 1 of the Invention Fig. 2 shows an embodiment of the present invention, in which an endoscope camera 11 as an endoscope photographing device is detachably attached to the connection tube 10 of the data imprinting device 9. Connected. Connection tube 1
A variable magnification optical system 12 is provided inside the lens 0 with its optical axis aligned with the axis of the connecting tube 10. In addition, the data imprinting device 9
The main body 9a has a liquid crystal display panel (
A light emitting diode (hereinafter abbreviated as FLED) 14 that provides transmitted illumination to the LCD 13 (hereinafter abbreviated as LCD) 13 is arranged in alignment on the optical axis of the variable magnification optical system 12.

In addition, 1. , the CD 13 displays data according to input from a keyboard (not shown) provided in the data imprinting device 9. The variable power optical system 12 is provided with a zoom drive mechanism 15 that can change the magnification of the variable power optical system 12.

A terminal 16 and a terminal 17 for electrical connection with the camera are provided on the end surface of the connection 1!110 connected to the camera. One input terminal 1 of the magnification control circuit 18 is connected to the terminal 16.
8a and one input terminal 19a of an LED control circuit 19 that controls light emission (2) of the light emitting diode 14 are connected. The output end 18b of the magnification control circuit 18 is a zoom drive-I
It is connected to one input terminal 20a of the J ti11 circuit 20, and compares the photometric signal @voltage from the camera side, which will be described later, with a preset reference voltage (corresponding to the reference magnification), and generates the reduction signal described in vi. , gives the multiplied signal to the zoom drive circuit 20. Note that the LED control circuit 19 has its output end 19G connected to the LED 14, and the l-CD
LED14 according to the number of characters of data displayed on 13
It is designed to control the amount of light emitted. One output end 20b of the zoom drive control circuit 20 is connected to the zoom drive device 11.
The L-co il+m is connected to the power supply terminal 15a of the drive motor (not shown) of No. 5, and the other output terminal 20c is connected to the other input terminal 19b of the LED control circuit 19, and drives the LCD 13. It is connected to one input end 21a of the circuit 21. The output terminal 210 of the LCD control circuit 21 is connected to the LCD 1' 3.

The terminal 17 has a pair of input terminals 22 of a connection detection circuit 22.
a is connected. Output end 220 of connection detection circuit 22
is connected to the other input terminal 21b of the LCD control circuit 21 and the input terminal 23a of the delay pulse generation circuit 23. The output terminal 23b of the delayed pulse generation circuit 23 is connected to the magnification control circuit 1.
8 and the other input end 20d of the zoom drive control circuit 20.

On the other hand, the camera 11 is connected inside the camera 11.
A mirror optical system 24, a beam splitter 24a1, a mirror shutter 2411, and a film 25 are provided so as to be located on the optical axis of the wA variable magnification optical system 12 connected to the i10.

The mirror shutter 24b is normally closed and the viewfinder (
A data image is formed on a film 25 (not shown), and when a release switch (not shown) is pressed, the release switch is opened and a data image is formed on the surface of the film 25. A light receiving element 26 is provided on the side surface of the beam splitter 24a at a position where the illumination light from the LED 14 is split and inputted. A photometric circuit 27 is connected to this light receiving element 26, and an electrical signal obtained by photoelectrically converting illumination light is input thereto. Note that a photometric circuit 27 is also provided within the camera 11. The output end 27a of the photometry circuit 27 is
When connected to the data imprinting device 9, it is connected to the terminal 16.

Further, the terminal 17 is connected to the camera 11 for data copying. When connected to the soaking device 9, it is designed to be short-circuited.

Next, the operation of one embodiment will be explained based on the time chart of FIG. First, the variable magnification optical system 12 and the photographing optical system 24
The case where the total magnification is too large than the appropriate magnification, that is, the case where the photometric signal voltage output from the photometric circuit 27 is lower than the reference voltage set in the magnification control circuit 18 will be explained. When the power of the data imprinting device 9 is turned on, power is supplied to the data imprinting device 19 as shown in FIG. 3 <A), and L E D I! By the control circuit 19 (
)'') <LE[)14 emits light with a constant amount of light, and the LC
Dυ'' control circuit 21 enables the LCD 13 to display as shown in (G). Note that the LCD 13 is a data imprinting device 9.
In response to input from a keyboard (not shown) provided on the screen, character data such as the patient's name, date of birth, patient number, medical record number, examination date, etc. or pictorial data such as the stomach are displayed.

When the camera 11 is connected to the connection tube 10 of the data imprinting device 9, the illumination light of the ED 14 passes through the variable magnification optical system 12, is split into two directions by the beam splitter 24a, and one is split by the mirror shutter 24b. One reflected light enters the finder (not shown), and the other enters the light receiving element 26. The light incident on the light receiving element 26 is photoelectrically converted and input to the photometry circuit 27 . The photometric circuit 27 amplifies the photoelectrically converted electrical signal and outputs it as a voltage signal as shown in (I).

Here, since the total magnification of the variable magnification optical system 12 and the photographing optical system 24 is larger than the appropriate magnification, the photometry signal voltage is lower than the reference voltage set in the magnification control circuit 18. On the other hand, the connection detection circuit 22 detects conduction of the terminal 17 and outputs a connection signal as shown in (B). When this connection signal is input, the LCD control circuit 21 prohibits display on the LCD 13 as shown in (G). Further, when the connection signal is input, the delayed pulse generation circuit 23 outputs a delayed pulse after a predetermined time delay as shown in (C). When this delayed pulse is input, the magnification control circuit 18 and the zoom drive control circuit 20 start operating. The magnification control circuit 18 compares the photometric signal voltage from the photometric circuit 27 with a preset reference voltage (corresponding to an appropriate magnification). Here, since the photometric signal voltage is lower than the reference voltage, the magnification control circuit 18 outputs a signal that lowers the magnification of the variable magnification optical system 12, ie, a reduction signal, as shown in (D). When this reduction signal is input, the zoom drive control circuit 20 supplies a positive voltage as shown in (E) to the drive motor (not shown) of the zoom drive mechanism 15. When a positive voltage is supplied to the drive motor (not shown) of the zoom drive mechanism 15, the drive motor (not shown) rotates in a forward direction, that is, in a direction that lowers the magnification of the variable power optical system 12. When the magnification of the variable power optical system 12 is lowered by the zoom drive mechanism 15, the photometric signal voltage increases as shown in (1). Then, the photometric signal voltage is set in the magnification control circuit 18 J! *When the voltage becomes the same as the voltage, the magnification control circuit 18 stops outputting the reduction signal as shown in (D). When the input of the reduction signal stops, the zoom drive@control circuit 20 stops supplying positive voltage to the drive motor (not shown) of the zoom drive mechanism 15, as shown in 9-(E). Then, the zoom drive mechanism 15 stops. That is, the variable magnification optical system 12
When the total magnification of the photographic optical system 24 reaches the appropriate magnification, the operation is stopped. On the other hand, when the input of the reduction signal is stopped, the zoom drive control circuit 20 outputs a control pulse as shown in (F) from the other output terminal 20C.

Note that once the magnification control circuit 18 and the zoom drive control circuit 20 stop outputting, they do not operate until the delay pulse from the delay pulse generation circuit 23 is input again. When this control pulse is input, the LCD control circuit 21 releases the inhibition of display on the LCD 13 as shown in (G). That is, the CD 13 can be displayed in response to input from a keyboard (not shown). When the -F control pulse is input, the LED control circuit 19 causes the LED l 4 to control the amount of light emitted as follows. Assuming that the amount of light emitted from LED 14 is constant, the number of luminous fluxes passing through L10-CD13 changes depending on the number of characters in the data displayed on LCD 13, and as a result, the illuminance on the film 25 surface, In other words, the illuminance on the light receiving element 26 changes. Therefore, the LED control circuit 19
For example, when the photometric signal voltage from the LCD 13 is lower than a preset voltage (corresponding to proper exposure), that is, when the number of data characters displayed on the LCD 13 is large, the amount of light emitted from the LED 14 is increased. Then, when the photometric signal voltage output from the photometric circuit 27 becomes the same as the set voltage, the LEDti control circuit 19
Stop increasing the amount of light emitted. In addition, the photometry circuit 27
When the photometric signal voltage output from the LCD 13 is higher than the set voltage, that is, when the number of display data characters on the LCD 13 is small, the amount of light emitted from the LED 14 is reduced.

Then, when the photometric signal voltage output from the photometric circuit 27 becomes the same as the set voltage, the LED control circuit 19
Stop reducing the amount of light emitted by DI 4. After this, by pressing a release button (not shown) on the camera 11, a photograph with appropriate magnification and exposure is taken. And camera 11
is removed from the connecting tube 10, the LED control circuit 1
9, the LED l4 emits light with a constant amount of light.

Next, if the total magnification of the variable magnification optical system 12 and the photographing optical system 24 is too small than the appropriate magnification, that is, the photometry signal voltage output from the photometry circuit 27 is lower than the reference voltage set in the magnification control circuit 18. ＾Explain the case.

When the camera 11 is connected to the data imprinting device 9, the photometric signal voltage of the photometric circuit 27 is higher than the reference voltage, so the magnification control circuit 18 outputs a multiplication signal, that is, a signal that increases the magnification of the variable magnification optical system 12. . Then, the zoom drive control circuit 20 outputs the zoom drive mechanism 1 from one output end 20b.
A negative voltage is supplied to the drive motor (not shown) of No. 5. The drive motor (not shown) of the zoom drive mechanism 15 rotates in the opposite direction, that is, in the direction of increasing the magnification of the variable power optical system 12, when a negative voltage is supplied. When the magnification of the variable magnification optical system 12 is increased, the photometric signal voltage decreases accordingly, and when the photometric signal voltage becomes the same voltage as the reference voltage, the magnification control circuit 18 stops outputting the multiplication signal. Then, the zoom drive control circuit 20 stops supplying the negative voltage to the drive motor (not shown) of the zoom drive mechanism 15, thereby stopping the zoom drive mechanism 15. On the other hand, when the input of the multiplication signal is stopped, the zoom drive@control circuit 20 outputs the other output terminal 20.
A control pulse is output from c. This control pulse is input to LCD1lJIl[821GtLCD1317]
The display inhibition is canceled, and the LED control circuit 19 performs the same light emission control on the LED 14 as described above when the magnification of the variable magnification optical system 12 is larger than the appropriate magnification.

As described above, according to the above embodiment, the variable magnification optical system 1
2, the size of imprint data etc. on the film surface can be freely set.

Furthermore, since the LED control circuit 19 makes the amount of light emitted by the LED 14 variable according to the photometric signal voltage, the LCD
An appropriate exposure amount can be obtained regardless of the number of characters in the display data of No. 13.

13- Note that the present invention is not limited to the above embodiment. For example, the L CD III I11 circuit 21 is
When a connection signal is input, instead of prohibiting display on the LCD 13, certain data serving as a reference may be displayed on the LCD 13.

Further, instead of outputting a reduction signal and a multiplication signal, the magnification control circuit 18 uses a lamp or a buzzer to display a reduction or increase in magnification, so that the magnification of the variable magnification optical system 12 can be manually changed. It's okay. Further, the magnification of the variable magnification optical system 12 may be manually changed so that the magnification can be manually changed to a desired magnification while viewing the image displayed by the finder (not shown) of the camera 11. Furthermore, instead of illuminating the LCD 13 from the back side with the LED l4 in a transmission manner, it may be illuminated from the front side. Also, LCD13
Instead of displaying it with LEDI 4 and lighting it with LEDI 4,
They may be arranged in a matrix and displayed by ED. Furthermore, a TV camera or the like may be used as the photographing device.

14- [Effects of the Invention] As described above, according to the present invention, since the data imprinting device is provided with a variable magnification optical system, the size of the imprinted data, etc. on the film surface -E can be freely set. can.

[Brief Description of the Drawings] Fig. 1 is a diagram showing a conventional example, Fig. 2 is a diagram showing a data imprinting device and a photographing device in one embodiment, and Fig. 3 is a diagram for explaining the operation of one embodiment. It is a figure showing a time chart. 9...Data imprinting V2V5 12...Variable magnification optical system 13...Liquid crystal display board patent applicant 15-

Claims (1)

[Claims] A data imprinting device comprising: means for displaying data; and a variable magnification optical system disposed in an optical path that guides an image of the displayed data to a photographing device.