JPH02218334A - Ophthalmic photographing device - Google Patents

Abstract

PURPOSE:To automatically carry out the putting off of a light source for illumination and insertion of a fluorescent filter into a photographing light path by providing a timer for counting the lapse time for photographing, putting-off means for putting off the light source for illumination, and an inserting means for inserting the fluorescent filter for fluorescent photographing into a photographing optical path. CONSTITUTION:When fluorescent mode is selected by a photographing mode selecting switch 72 in the fluorescent photographing, a solenoid S2 for exciter filter is operated by a controller 70, and an exciter filter for fluorescent light is inserted into an optical path, and a lighting source 23 for injection point is turned ON. Therefore, even if the light in a room is put off, the intramuscular injection of a fluorescent agent into a patient is permitted. Further, when a photographing switch 26 installed onto a joy stick 22 is pressed, a timer 75 starts timing, and a light source 41 for lighting eye-ground comes ON, and the photographing by a TV camera 18 is started, and an eye-ground image is recorded by a VTR 16. When the time on the timer 75 counts a set time, the light source 23 for lighting the injection point is put off by the controller 70.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an ophthalmologic photographing apparatus for photographing the fundus of an eye to be examined by intravenously injecting a fluorescent agent.

(Prior Art) Generally, in an ophthalmologic imaging apparatus that photographs the fundus of the eye by intravenously injecting a fluorescent agent, the fundus is photographed in a dark place such as a dark room. Therefore, when intravenously injecting a fluorescent agent into a subject, it is necessary to illuminate the injection site. Therefore, a desk lamp or the like is used to illuminate the injection site.

However, the illumination light from the illumination light source reflects off the subject's cornea, eyelashes, etc. and adversely affects fundus photography, so the illumination light source is turned off for intravenous injections.

(Problem to be Solved by the Invention) However, in the above-mentioned ophthalmologic imaging device, the examiner manually turns off the illumination light source, which is troublesome. Insertion of a fluorescence filter into the imaging optical path, activation of a timer to measure the elapsed time of imaging, etc. were performed manually by the examiner, resulting in a problem of extremely low work efficiency.

(Object of the Invention) Therefore, the present invention was made in view of the above-mentioned problems, and its purpose is to automatically turn off the illumination light source and insert the fluorescent filter into the photographing optical path. The goal is to provide equipment.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an illumination light source for illuminating the injection site when a fluorescent agent is intravenously injected into a subject, and an illumination light source for photographing the fundus of the subject's eye. In the ophthalmologic imaging apparatus, the ophthalmologic imaging device is equipped with an imaging device that activates the imaging device, a imaging switch that activates the imaging device, and a timer that measures the elapsed time of imaging, wherein the illumination light source is turned on when the time measured by the timer reaches the lights-out time. A light-extinguishing means for extinguishing the light is provided.

Further, the present invention is characterized in that an insertion means is provided for inserting a fluorescence filter for fluorescence photography into the photographing optical path after a predetermined period of time has elapsed since the timer has started.

(Function) Since the present invention has the above configuration, when the time measured by the timer reaches the lights-out time, the lights-out means turns off the illumination light source.

Further, once a predetermined period of time has elapsed since the timer started, the means inserts the fluorescence filter into the photographing optical path.

(Implementation fR) Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a side view of the ophthalmological imaging apparatus according to the present invention. In the figure, 20 is a power supply base, 21 is a pedestal mounted on the power supply base 20, and this pedestal 21 is a joystick. It is designed to move forward, backward, left and right by operating 22. The joystick 22 is provided with a photographing switch 26 that is pressed when photographing. Further, the pedestal 21 is provided with an injection site illumination light source 23 that illuminates the injection site of the subject.
Light emission and extinguishment of the light are controlled by a controller 70 (see FIG. 3), which will be described.

In addition, this illumination light for injection site/! 23 may be a commercially available desk lamp or the like, and in this case, it is sufficient to control the ON/OFF of the power of the desk lamp.

Reference numeral 24 denotes a main body that is supported by a column 25 so as to be able to move up and down. An objective lens 3 and the like facing E (see FIG. 2) are arranged. Further, a camera 35 for photographing the fundus of the eye E to be examined and a TV left camera 8 are attached to the main body 24.

FIG. 2 is a schematic layout diagram showing the arrangement of the optical system arranged in the main body 24. In FIG. 2, 1 is an observation system for observing the fundus Er of the eye E to be examined, and 30 is the fundus of the eye E This is an illumination optical system that illuminates Er.

The observation system 1 includes an observation optical system 2 including a 35as camera K,
It consists of a TV camera photographing optical system 10 that shares a part of the optical axis with the n-alignment optical system 2.

The observation optical system 2 includes an objective lens 3 facing the eye E to be examined;
It consists of a focusing lens 4, a photographing lens 6, a mirror 8.9, and an eyepiece Q. In addition, the observation optical system 2 includes a fluorescence barrier filter that can be switched between inside and outside the optical path.
A fluorescence filter) 5 is provided. The position of this fluorescent barrier filter 5 is switched by a solenoid (insertion means) 81.
It is now carried out by

The mirror 8 is designed to flip up to the position indicated by the broken line when photographing, and F is a 35 intestinal layer film.

The TV camera photographing optical system 10 includes a mirror 11 that moves to the position indicated by the broken line during photographing, a relay lens 12, and a mirror 13.
and CCD1 of the television camera TV18 that receives the fundus image.
It consists of 4. 16 is CCD l 41: Connected V
TR117 is a TV monitor that monitors the fundus image photographed by the TV left camera 8.

The illumination optical system 30 includes an objective lens 3 and an apertured mirror 31.
, a relay lens 32, a mirror 33, a relay lens 36, a ring aperture plate 37 having a ring aperture 37a located at a conjugate position with the pupil Ea, a half mirror 38, a relay lens 39.40, and illuminates the fundus. It consists of a light source 41 for fundus illumination and a photographing light R42. This illumination optical system 3
0 is provided with a fluorescent exciter filter 35 which can be switched between the optical path and a position outside the optical path, and the position of the fluorescent exciter filter 35 is switched by a solenoid S2.

Now, when the illumination light is emitted from the fundus illumination light PJ41,
This illumination light is incident on the eye E through the relay lens 39, half mirror 38, ring aperture plate 37, relay lens 36, mirror 33, relay lens 32, perforated mirror 31, and objective lens 3. Then, an aperture image of the ring aperture 37a is formed in the pupil Ea, and the fundus Er is illuminated by this aperture image.

The reflected light flux from the fundus Er is transmitted through the objective lens 3 and the perforated mirror 3.
1. The light reaches the eyepiece Q via the focusing lens 4, photographing lens 6, and mirrors 8 and 9, whereby the fundus Er is observed.

When photographing the fundus Er, it is sufficient to flip up the mirror 8 to the position indicated by the broken line and cause the photographing light source 42 to emit light. As a result, the fundus Er is photographed using the 35-inch camera.

Also, place mirror 11 on the broken line! If the camera is switched to , the TV left camera 8 will take pictures. In this case, the photographic light -t
! 1.42 does not emit light.

FIG. 3 is a block diagram showing the configuration of the control system of the ophthalmologic imaging device. In FIG.
73 is a shooting mode changeover switch for switching between fluorescent shooting mode and normal mode, 73 is a shooting number setting switch for setting the number of shots to be taken by the camera 35-1, and 74 is a shooting switch 2.
Button number memory that stores the number of times 5 has been pressed, 75
is a timer that measures the photographing time, and the time measured by this timer is recorded on the VTR 16 together with the fundus image.

Based on the settings of the switches 71 to 73, the controller 70 operates the timer 75, controls the lighting/extinguishing of the injection site illumination light source 23, controls the operations of the solenoids S and S2, etc., and controls the operation of the 35am camera. It controls the operation of the TV left camera 8, etc. That is, the controller 70 has a timer activation function that activates the timer 75, a light-off function that turns off the injection site illumination light source 23, and the like.

Next, the operation of the above-mentioned ophthalmologic photographing apparatus will be explained.

First, a main switch (not shown) is turned on, and when fluorescence photography is to be performed, the extinguishing time of the injection site illumination light source 23 is set by the extinguishing time setting switch 71. next,
The fluorescence mode is selected using the photographing mode changeover switch 72. Then, the controller 70 operates the exciter filter solenoid S2 to insert the fluorescence exciter filter 35 into the optical path and turn on the injection site illumination light i[23. This lighting allows intravenous injection of the fluorescent agent to the subject even if the lights in the room are turned off.

Next, a fluorescent agent is intravenously injected into the subject, and a photographing switch 26 provided on the joystick 22 is pressed. Then, the timer 75 for measuring elapsed time starts counting, the fundus illumination light 11i41 is turned on, the TV left camera 8 starts photographing, and the VTR 16 records the fundus image.

Note that the fluorescence exciter filter 35 is inserted by the timer 75.
It may also be performed in conjunction with the start of.

When the timer 75 measures the set time, the controller 70 turns off the injection site illumination light source 23, and the controller 70 activates the barrier filter solenoid S1 to insert the fluorescent barrier filter 5 into the optical path. be done. In addition, this fluorescent barrier filter 5
The insertion may be performed by providing an insertion time setting switch in addition to the light-off time setting switch 71, as shown by the broken line in FIG.

In this way, the injection site illumination light source 23 is controlled by the controller 7.
0, and the barrier filter 5 is automatically inserted into the optical path by the solenoid S1, so there is no need for the examiner to turn off the light or insert the filter.

When the photographing switch 26 is pressed again, the fundus illumination light source 41 is turned off, the photographing of the TV left camera 8 is stopped, and the TV
16 is stopped.

On the other hand, when the photographing switch 26 is turned on, the photographing light /! 4
2 emits light and the 351fi camera K takes a picture. Thereafter, every time the photographing switch 26 is pressed, the photographing light [42] is emitted and the 35 mm camera performs y&photo.

The number of times the shooting switch 26 is pressed is stored in the button number memory 74, and when the value obtained by subtracting 1 from this number reaches the set number of shots set in advance by the number of shots setting switch 73, the timer 75 is activated. At the same time, the injection site illumination light [23 is turned on again to prepare for the next examination.

When the set number of shots is not set by the number of shots setting switch 73, the operation of the timer 75 is stopped when the number of shots reaches the number of shots that can be taken with the film, and the injection site illumination light source 23 is turned on again.

In addition, the injection site illumination light fi23 can be re-lit by providing a re-lighting time setting switch as shown by the broken line in FIG.
This allows the light to be lit again, and the timer 75 can also be stopped when the light is lit again.

When fluorescence photography is not performed, so-called normal mode photography, the normal photography mode may be selected using the photography mode selection switch 72. In this case, timer 77
Otherwise, the operation is the same as above, except that the activation of the filter 5.35 and the insertion of the filter 5.35 are not performed.

FIG. 4 shows a second embodiment, in which a syringe 80 is provided with a microswitch 81 for detecting the start of injection, and detection by this microswitch 81 activates a timer 75, and a timer 75 is activated at the injection site. Illumination light source 2
3 is turned on and the interior light 82 is turned off, and then the TV camera 18. The fluorescent barrier filter 5 is inserted into the optical path after a predetermined period of time has elapsed since the VTR 16 was activated and the microswitch 81 detected the injection. Also, when the shooting switch 26 is pressed, the TV camera 1
8. The operation of the VTR 16 is stopped, and the 35-unit camera K takes pictures, and the subsequent operations are performed in the same manner as in the above embodiment.

In the above embodiment, a 35mm camera K is used, but an instant camera or an electronic still camera may also be used.
t images can be displayed on the TV monitor 17.

(Effects of the Invention) According to the present invention, the light source is equipped with a light-off means for turning off the illumination light source when the time measured by the timer reaches the light-off time; Since it is equipped with an insertion means for inserting a fluorescence filter for post-fluorescence photography into the photographing optical path, the illumination light source is automatically turned off and the fluorescence filter is inserted into the photographing optical path, making it easy to operate. This makes it a convenient ophthalmological imaging device.

[Brief explanation of the drawing]

Fig. 1 is a side view of the ophthalmological photographing device according to the present invention;
The figure is a schematic configuration diagram showing the arrangement of the optical system of the ophthalmological imaging device.
FIG. 3 is a block diagram showing the configuration of the control system of the ophthalmologic photographing apparatus, and FIG. 4 is an explanatory diagram of the second embodiment. 77...Timer K...35m5 camera (ll & shadow thrower l...Solenoid for barrier filter (insertion means) 5...Barrier filter for fluorescence (fluorescence filter) 26...Photography switch 41... Illumination light for injection site if! (illumination light source) 70.
・・Controller (light off means)

Claims (2)

[Claims] (1) An illumination light source that illuminates the injection site when a fluorescent agent is intravenously injected into a subject, a photographing means that photographs the fundus of the subject's eye, a photographing switch that operates this photographing means, and the elapsed time of photographing. What is claimed is: 1. An ophthalmologic imaging device comprising: a timer for counting time, the ophthalmologic imaging device comprising: a light-off means for turning off the illumination light source when the time measured by the timer reaches a light-off time. (2) The ophthalmologic imaging apparatus according to claim 1, further comprising an insertion means for inserting a fluorescence filter for fluorescence imaging into the imaging optical path after a predetermined period of time has elapsed since the timer started.