JPS62299235A - Medical observing photographic machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a medical observation and photographing instrument that can be equipped with a plurality of observation and photographing devices and can be switched and replaced as desired.

[Prior Art] In recent years, devices for observing or recording images, such as television observation devices, instant photographs, and still video cameras, have made remarkable progress.With these advances, medical observation and photography instruments,
For example, fundus cameras and the like that are equipped with various observation and recording devices are beginning to become popular.

Among the ophthalmological recording systems mentioned above, it is said that the most advanced one at present is the fundus camera, but this fundus camera also generally uses special imaging methods such as fluorescent angiography. , has become extremely complex and its operation is becoming difficult to understand. This operation is, for example, setting the observation light intensity.

Various operations such as setting the amount of photographing light, putting in and taking out the filter, and switching the optical path must be reset every time the observation/photography mode is changed.

[Object of the invention] The object of the present invention is to simplify the above-mentioned complicated operations,
When the examiner specifies one of the imaging or observation modes without having to worry about operating the device, the system reads out the memory of the existing settings, sets the imaging light intensity, the observation light intensity, and so on. It is an object of the present invention to provide a medical observation and photographing instrument capable of preparing observation and photographing conditions such as changing the optical path and putting in and taking out a filter.

[Summary of the invention] The gist of the present invention is to achieve the above objects.

It has multiple mounts that allow multiple observation and imaging devices to be replaced and mounted, and includes exposure conditions such as film sensitivity that are compatible with the observation and imaging devices, imaging procedures such as putting in and taking out various filters, and the amount of observation light that should be controlled. means for storing observation and photographing conditions such as, means for selecting a predetermined observation and photographing device from the plurality of observation and photographing devices, and means for storing observation and photographing conditions corresponding to the observation and photographing device from the storage means according to the selecting means. reading means; means for identifying which mount of the plurality of mounts the observation and imaging device corresponding to the memory read out by the reading means is attached; and means for guiding a subject image to the observation and imaging device identified according to the stored information.

[Embodiments of the invention] The present invention will be explained in detail based on illustrated embodiments.

FIG. 1 is a block diagram of a fundus camera system to which the present invention is applied. The fundus camera body 30 includes, for example, three mounts (Ml, M2) for attaching various observation/imaging devices.
, M3 are provided, for example, the mount Ml is provided with a television viewing device 1, and the mount 1112 is provided with a large format film box 2.
, 35mm color film box 3 on mount M3
is installed.

In addition, it is possible to attach various other imaging devices to these mounts (Old, M2, M3, etc.)
Still video recording device on Ml, 3 on mount M2
5 mm color film box 3.35 mm fluorescent black and white film box 5, and self-processing film box 4 are further mounted via an adapter (not shown)
3 has a 35 mm fluorescent black and white film box 5 which is replaceable. In addition, 35mm film box 3.5
A finder 7 for visual observation is attached.

The fundus camera body 30 has a built-in light source and optical system similar to those of a normal fundus camera, including a halogen lamp 8.
The xenon flash lamps 9 and 9 are made substantially conjugate by a relay condenser lens 10, and the light emitted from each light source 8.9 is passed through a condenser lens 11, an illumination lens 12.
An illumination optical system consisting of a perforated mirror 13 and an objective lens 14 illuminates the fundus Er of the eye E to be examined.

In this illumination optical system, ring slits, baffles, etc. are arranged to remove harmful reflected light from the eye E, but since these are the same as in a normal fundus camera, a detailed explanation will be omitted. do. The reflected light from the fundus Er passes through the objective lens 14 and the perforated mirror 13 again along the optical path AO.
through the opening of the lens 1 and the focusing lens 15.
Sent to 6. Behind the photographic lens 16 are optical path switching mirrors R1 and R2 driven by Truids S1 and S2.
are provided, and are inserted into the optical path AO to create a separate optical path A1. A2 is formed and the imaging planes F1 and F2 of the observation and imaging device 1.2 attached to the mounts Ml and M2
Lens system Ll, F2, prism PI, R attached to etc.
A fundus image is formed through a second-class optical system.

When the optical path switching mirrors R1 and R2 are both removed from the optical path AO, the reflected light from the fundus Er continues along the optical path AO and is sent to the mount M3. Mount M
3 includes the prism P3 and the eyepiece L3 as described above.
When a 35 mm color film box 3 to which a visual finder 7 consisting of is attached is attached, and a quick return mirror R3 driven by TRUID S3 provided in the film box 3 is inserted into the optical path AO, an optical path A3 is formed. The fundus image can be observed through the finder 7. Furthermore, when the quick return mirror R3 is removed from the optical path AO, a fundus image is formed on the film surface F3. Furthermore, the observation and imaging device attached to each mount M1, M2, M3 is provided with a shutter t2. t3 is provided.

The filters FLI and FL2 in the fundus camera main body 30 are removably installed in the optical path with Truids S4 and S5, respectively.For example, the filter FLI is an exciter filter for fluorescence, and the filter FL2 is a barrier filter for fluorescence. , FL2 is inserted into the optical path when performing fluorescence photography.

Furthermore, each mount M1.
Identification signal generation circuits 01 to C5 are provided which give an identification signal to the observation and imaging device identification circuit 17 in the fundus camera body 30 through contacts provided in M2 and M3, and the identification circuit 17 receives this signal. is each mount old, M2
, information about which devices are installed on M3
It is designed to be given to PU18. The CPU 18 is connected to an input/display circuit 19 .
is configured to display this information, and the input/display circuit 19 also controls a mode changeover switch for selecting various observation and imaging devices attached to the fundus camera body 30, and exposure controls such as film sensitivity corresponding to each observation and imaging device. It has a switch for setting information such as conditions and observation light amount in the memory 20. The memory 20 is connected to the CPU 18 and stores input information and photographing control information such as the insertion and removal of filters corresponding to each imaging device, and corresponds to the mode selected by the mode changeover switch of the input/display circuit 19. The CPU 18 sends the information to the CPU 18.Based on this information, the CPU 18 works with the photographing switch 24 to control the lamp power supply circuit 21.
The flash power supply circuit 22 and the interface 23 are used to control each of the shutters 51 to S5 and the shutters t2 and t3.

FIG. 2 is a front view of the panel 25 of the input/display circuit 19. Indicator II~! 7 is LED, indicator I
8 is a staged LED indicating the amount of light, indicator I
8 is a numerical display, SWt to SW7 are self-illuminated push button switches, and SW8 to SWtt are push button switches.

Next, the operation of the fundus camera having the above structure will be explained. First, in FIG. 1, a television observation device 1 is attached to the mount M1 of the fundus camera body 30, a large format film box 2 is attached to the mount M2, and a 35 mm color film box 3 is attached to the mount M3. The identification circuit 17 within the fundus camera body 30 is as follows.

The signals from the identification signal generation circuits CI, C2, and C3 provided in the respective observation and imaging device bodies are received, and the signals are sent to the indicator If-17 on the panel 25 of the input/display circuit 19 via the CPU 18. Displays the observation imaging device and which mode of observation imaging is available.

In the case of Fig. 1, the observation mode is the viewfinder and TV, and the shooting mode is 35mm color shooting and large format shooting, so the indicators 11, ■2, ■3, and ■6
lights up.

The examiner selects one of the observation and photography modes shown on these indicators.

For example, to select viewfinder mode for observation and 35mm color mode for photography, press the self-illuminated push button switch SW1. When SW3 is pressed, switch SWI,
SW3 lights up to indicate that it has been selected. The CPU 18 accepts the selection of the self-illuminated push button switches SWI to SW7, reads out various information corresponding to the selected mode from the memory 20, and sets the fundus camera system to that mode. That is, since the identification circuit 17 recognizes that the 35zm color film box 3 of the finder 7 is currently attached to the mount M3, the CPU 18 in the observation state
S3 is driven to remove the optical path switching mirrors R1 and R2 from the optical path AO, and a signal is issued to the interface 23 to cause the quick return mirror R3 to be inserted into the optical path AO.

Similarly, the lamp power supply circuit 21 is set to the light intensity used in the previous mode, and the light intensity is displayed on the indicator area 8 on the panel 25 of the input/display circuit 19. If you want to change this amount of light, you can set it to the desired amount of light by operating the self-illuminated push button switches SW8 and SW9 for adjusting the amount of light, and this newly set amount of light is immediately read into the memory 20. is memorized. Regarding the shooting light amount, the film sensitivity of the color film box 3, which is read out from the memory 20 and set in advance, is indicated by the indicator on the panel 25. The CPU 18 calculates the corresponding amount of photographing light, sets it in the flash power supply circuit 22, and charges the capacitor in the flash power supply circuit 22. If the film sensitivity in the film box 3 is different from the displayed ISO sensitivity, press the ISO setting headlight type push button switch 5W in the same way.
You can change the sensitivity by operating IO1SWII up and down, and the newly set ISO sensitivity is stored in memory 20.
It is read and stored within.

Then, after the capacitor is charged, when the photographing switch 24 is pressed, photographing is executed. That is, the CPU 18 issues a signal to the interface 23 to drive the TRUID S3, moves the quick return mirror R3 away from the optical path AO, similarly opens the shutter t3, and then fires the xenon flash lamp 9 with the previously calculated light intensity. emits light and takes 35mm color photographs.

Although it is natural from the configuration of this embodiment, for example, 35
If the mm color film box 3 is attached to the mount M2, the CPU 18 will recognize the above from the signal from the identification circuit 17, so the interface 2
3 issues a signal to drive the solenoid S2, inserts the optical path switching mirror R2 into the optical path AO, and then performs the above operations to perform 35mm color photography using the 35mm color film box 3 attached to the mount M2. Take. In other words, predetermined observation and photography can be performed no matter which mount the observation and photography device in the designated mode is located on.

Next, when the examiner presses the push button switch SW2 to change the mode to TV viewing, the switch SWI goes out and the switch SW2 lights up. At the same time, the CPU 18
Various information corresponding to the TV viewing mode is read out and the specific pressure camera system is set to that mode. That is, since the identification circuit 17 recognizes that the television viewing device l is now attached to the old mount, C
The PU 18 issues a signal to the interface 23 to drive the solenoid S1 to insert the optical path switching mirror R1 into the optical path AO and form an optical path Al. As a result, the light reflected from the fundus Er is sent to the lens system L1 and the prism P after being reflected by the optical path switching mirror R1.
A limit image is formed on the television camera imaging plane Fl through I. Further, as before, the lamp power supply circuit 21 is set to the light intensity used in the previous mode, and displays the light intensity on the indicator I8 on the panel 25 of the input/display circuit 19. When the photographing switch 24 is pressed in this state, in addition to the previous photographing operation, the optical path switching mirror R1 also moves out of the optical path AO in synchronization with the quick return mirror R3.
Photographing is performed using the mm color film box 3.

Next, a case will be described in which the shooting mode is switched to large format shooting. Push button switch SW8 for large format shooting mode on panel 25
When is pressed, the switch SW3 is turned off and the switch SW8 is turned on. CPU18 is a memo again.

Various information corresponding to the large-format photography mode is read out from the camera 20, and the fundus camera system is set to that mode.

That is, regarding the amount of photographing light, the preset film sensitivity of the large format film box 2 is read out and displayed on the indicator 9 on the panel 25 of the input/display circuit 19. At the same time, the CPU 18 calculates the corresponding amount of shooting light, sets it in the flash power circuit 22, and charges the capacitor in the flash power circuit 22. At the time of shooting, the large format film box 2 is currently attached to the mount M2. has been recognized by the imaging device identification circuit 17, so in addition to the previous photographing operation, the CPU 18 uses the solenoid S2 to change the optical path switching mirror R2 to the optical path AO.
After the light path A2 is formed, the shutter t2 is opened and a command is issued to cause the flash lamp 9 to emit light according to the previously calculated amount of light. The reflected light from the fundus Er is reflected by the optical path switching mirror R2 and sent to the mirror (mount) M2, and a fundus image is formed on the film surface F2 via the lens system L2 and prism P2, and large-format film photography is performed.

Each mount of the fundus camera body 30) Even when an observation imaging device other than that shown in FIG. The same is true. Although a detailed explanation will be omitted, the observation photography mode enabled by the attached imaging device is that any of the indicators If to ■7 on the panel 25 of the input/display circuit 19 lights up, and the fluorescence photography mode is activated. If selected, CP
U18 works with the shooting switch 24 to connect the interface 2.
It should be added that the filter is configured to drive the solenoids S4, S5 via the filters 3 and to switch the filters FLI, FL2 in a timely manner.

In the previous embodiment, a fundus camera having three mounts NINM3 was explained as an example; however, the scope of application of the present invention is not limited to this number of mounts, nor is the fundus camera specific. Ml-M of each mount
The configuration method of 3, the control procedure for optical path switching, etc. are not limited to the previous embodiments, and the information on photographing and observation conditions is not included in the previous embodiments. For example, exposure compensation, film sensitivity number, etc. Needless to say, it will be easier to use if you add mounts such as Ml-
If M3 is configured to have complete compatibility, the system will be more advanced.

In addition, in order to utilize the structure of the present invention more effectively,
It is useful to incorporate mechanisms such as: That is, in Figure m1, the same imaging device, for example, the 35mm monochrome fluorescent film box 5, is attached to mounts M2 and M3, respectively, and in this case, mount M3 is given priority in the shooting mode in the initial state of the system. Suppose it is configured. Then, the shooting progressed and Mount M
When the film in the film box 5 attached to the mount M2 runs out, this situation often occurs because fluorescence photography generally records the passage of time, but the film is automatically transferred to the film box attached to the mount M2. Switching the shooting mode can be implemented relatively easily by using the structure of the present invention.

To this end, in addition to the identification signal generation circuit Ci, each film box is provided with an abnormality signal generation circuit Di such as film end, etc., as shown in FIG. It is obvious that the CPU 18 shown in FIG. 1 should automatically change the control method for driving the optical path switching mirror R2. In this case, the system initial state IE
It is effective and easy to make the mount to be prioritized selectable in order to improve usability. Furthermore, it is equally effective to transmit the signal from the abnormal signal generation circuit Di to the examiner, but since this is also done in conventional devices, we will not discuss the specific method.

[Effects of the Invention] As explained above, the medical observation and photographing instrument according to the present invention can adjust the subject ratio by combining a plurality of observation modes and photographing modes with a simple operation such as operating a mode changeover switch. The inspection record will be 100%. It is also useful for inexperienced users who have never used the device system before, as they can simply select the mode they want to use without having to worry about which mount on the device the various imaging devices are attached to. Furthermore, even when it is desired to perform continuous recording such as fluorescence photography, the system of the present invention is effective and has the advantage that photography can be continued without interruption of recording.

[Brief explanation of the drawing]

The drawings show the actual side of the medical observation and photographing instrument according to the present invention, Fig. 1 is a configuration diagram when the present invention is applied to a fundus camera, Fig. 2 is a front view of the panel, and Fig. 3 shows the film. It's a box. Reference numeral 1 designates a television observation device, 2 to 5 film poses, 17 an identification circuit, 181iCPU, 19 an input/display circuit, 20 a memory, 25 a panel, and 30 a fundus camera body.

Claims (1)

[Scope of Claims] 1. It has a plurality of mounts on which a plurality of observation and imaging devices can be replaced and mounted, and the exposure conditions such as the film sensitivity and the insertion and removal of various filters are adjusted according to the observation and imaging device. means for storing observation photographing conditions such as photographing procedures and observation light quantity to be controlled; means for selecting a predetermined observation photographing apparatus from the plurality of observation photographing apparatuses; and means corresponding to the observation photographing apparatus according to the selecting means. means for reading observation and photographing conditions from the storage means; and means for identifying to which of the plurality of mounts the observation and imaging device corresponding to the memory read out by the reading means is attached. and means for guiding a subject image to the observation and imaging device identified according to the memory read out from the storage means. 2. The plurality of observation and imaging devices have a means for emitting an abnormal signal such as the end of the film, and when the same observation and imaging device is attached to two or more of the mounts, the observation and imaging device displays an image of the eye to be examined. The means for guiding the light operates to switch from one observation and imaging device that has generated an abnormal signal to another observation and imaging device among the same observation and imaging devices.
Medical observation and imaging equipment described in Section 1.