JPH07116123A - Ophthalmic apparatus for observation and photography - Google Patents

Abstract

PURPOSE:To provide an opthalmic apparatus for observation and photography such as a fundus camera having a means to display the control data such as the effective count of photographing and the recording type and capable of photographing an image of fundus along with these information. CONSTITUTION:The light from a light source for observation, reflected by a fundus Ef is observed by the operator's eye e after passing through a perforated mirror 8, a switching mirror 12, etc. Similarly the light from a light source 3 for photographing, reflected by the fundus Ef is recorded as a fundus image on a image recording medium 14. At the same time the operator inserts a floppy disk into a still video recorder 19 and selects photographing information such as the effective count of photographing and the recording type. Those information, together with the fundus image, are sent to a still video information detector 22 by the still video recorder 19 and are shown on a display 21. The image on the display 21 is recognized by the operator's eye e through a half mirror 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmic observation and photographing apparatus for recording a fundus image of an eye to be examined by using an electronic image recording means.

[0002]

2. Description of the Related Art Conventionally, in an ophthalmic observation and photographing apparatus such as a fundus camera using an electronic image recording apparatus such as a still video, information regarding photographing such as the number of effective photographing and selection of field photographing and frame photographing is used for the still video. Is configured to be displayed on a display device, an external monitor, or the like.

[0003]

However, in the above-mentioned conventional example, since the information such as the number of effective shots and the recording method is displayed on the still video recording device or the external monitor, the examiner can obtain these information. If you need information,
There is a problem that the observation of the fundus image of the eye to be inspected must be interrupted once and the line of sight must be moved to the still video recording device or an external monitor.

The object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide an ophthalmologic observation and photographing device having a display unit capable of always displaying information such as the number of effective photographing and recording method in a photographing device body such as a fundus camera.

[0005]

An ophthalmic observation and photographing apparatus according to the present invention for achieving the above object comprises an observing means for observing an eye to be examined, an image pickup means for picking up an image of a fundus of the eye, and the image pickup means. An electronic image recording means for recording an image of an eye to be inspected, and a display means for displaying management data of a recording medium used in the electronic image recording means, the display means being provided in the observation means. To do.

[0006]

The ophthalmic observation / photographing apparatus having the above-mentioned structure displays the management data of the recording medium together with the fundus image on the display means in the observation means when the fundus of the eye to be examined is recorded and recorded as an electronic image.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 shows a configuration diagram of this embodiment using a fundus camera. On an optical path O1 from an observation light source 1 to an eye E, a condenser lens 2, a photographing light source 3 such as a flash tube, a condenser lens 4, and a bend. A mirror 5, a ring slit 6 having an annular opening, a relay lens 7, a perforated mirror 8 and an objective lens 9 are sequentially arranged.

Further, on the optical path O2 behind the perforated mirror 8, a focusing lens 10, a taking lens 11, and a switching mirror 1 are provided.
2, an aperture mask 13 and an imaging recording medium 14 such as a CCD are arranged, and on the optical path O3 reflected upward by the switching mirror 12, a half mirror 15, a field lens 16, a bending mirror 17, and an eyepiece lens 18 are provided. Are arranged. The output of the photographing recording medium 14 is connected to the still video recording device 19.

Further, the optical path reflected by the half mirror 15
A data lens 19 and a display 21 are arranged on O4. The display 21 is connected to the still video recording device 19 via a still video information detector 22. The still video recording device 19 is additionally provided with a frame / field shooting selection lead 23 and a track selection switch 24.

The observation light source 1 and the photographing light source 3 are substantially conjugate with respect to the condenser lens 2, and the photographing light source 3 and the ring slit 6 are substantially conjugate with respect to the condenser lens 4.
The ring slit 6 and the perforated mirror 8 are substantially conjugate with respect to the relay lens 7, and the perforated mirror 8 is substantially conjugated with respect to the objective lens 9 near the pupil of the eye E to be inspected. Further, the display section of the display 21 and the field lens 16 are arranged substantially conjugate with respect to the data lens 19.

In the above structure, when observing the fundus Ef,
When the observation light source 1 is turned on, the observation light passes through the condenser lens 2, the photographing light source 3, and the condenser lens 4 along the optical path O1.
Through the circular aperture of the ring slit 6 and the relay lens 7, and is left-turned by the perforated mirror 8 to pass through the objective lens 9 and the eye E to be inspected.
And illuminates the fundus Ef. The reflected light from the fundus Ef passes through the objective lens 9, the central opening of the perforated mirror 8, the focusing lens 10, and the taking lens 11, is reflected upward by the switching mirror 12, and is reflected by the half mirror 15, the field lens 16, After passing through the folding mirror 17 and the eyepiece 18, the examiner's eye e
And the examiner observes the fundus Ef.

When taking a picture of the fundus Ef, the switching mirror 12
Exits from the optical path O2, the photographing light source 3 emits light, follows the same optical path as the observation light described above, is illuminated to the fundus Ef and is reflected from the fundus Ef, and the fundus image passes through the aperture mask 13 and the imaging recording medium. 14 is recorded.

The examiner inserts a floppy disk into the still video recording device 19 and selects either a frame image or a field image as a recording method by using the frame / field photographing selection switch 23. If you are using a floppy disk that already contains several images,
The track to start recording is determined using the track selection switch 24. The still video recording device 19 calculates the recordable number of sheets from the selected track to the final track, and sends the information together with the recording method to the still video information detector 22. Still video information detector 22 receiving information
Sends a signal to the display 21 to display information on the still video recording device 19 such as the number of effective photographing, recording method and ID number in the viewfinder through the half mirror 15, and the information is confirmed by the examiner's eye e. Further, it is possible to display various kinds of recorded image information such as the current number of tracks in the finder as well as the information on the number of effective photographing and the recording method.

FIG. 2 shows a second embodiment, in which the display 21 is arranged in the vicinity of the field lens 16 instead of the half mirror 15, and the other parts are the same as in the first embodiment. Also in this embodiment, the examiner can directly observe the image on the display 21.

Further, in the case of an ophthalmologic observation / photographing apparatus having a built-in monitor as the display means, it is possible to display information on the still video recording apparatus 19 on the built-in monitor.

[0016]

As described above, in the ophthalmologic observation and photographing apparatus according to the present invention, the examiner displays the management data of the Kikubaitai such as the number of effective photographing and the recording method on the display means so that the examiner can obtain the fundus image of the eye to be examined. The above information can be confirmed without moving the line of sight during observation, and efficient ophthalmologic diagnosis can be performed.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a first embodiment.

FIG. 2 is a configuration diagram of a second embodiment.

[Explanation of symbols]

 1 Observation light source 3 Photographing light source 8 Perforated mirror 10 Focusing lens 12 Switching mirror 13 Aperture mask 14 Imaging recording medium 15 Half mirror 19 Still video recording device 21 Display device 22 Still video information detector

Claims (1)

[Claims] 1. An observation means for observing an eye to be inspected, an imaging means for imaging a fundus of the eye to be inspected, an electronic image recording means for recording an image of the eye to be inspected by the imaging means, and an electronic image recording means. An ophthalmologic observation and photographing apparatus comprising: a display unit for displaying management data of a recording medium, the display unit being provided in the observation unit.