JPS62288806A - Stereoscopic microscope - Google Patents

Abstract

PURPOSE:To observe an object to be examined in the visual field of a stereoscopic microscope without adding any means specially to the main body of the microscope, by providing an information presenting means arranged closely to the object and an observing means which observes the information presented by the presenting means together with the object. CONSTITUTION:At an MPU 10 input signals from a photodetecting element surface 6 are operation-processed by means of signals inputted from an encoder 8 and correction of a projecting magnification is performed. The operated results are displayed on a display device 13 through a driver 11 as data indicating the shape of a cornea. The display device 13 of the data is a liquid-crystal display device fitted to an eye opener 14 and the shape measuring data of a cornea C are displayed in a 1st display section 13a. In a 2nd display section 13b the enlarging magnification of a stereoscopic microscope and the mode data of a microscope operating switch, such as data of upward and downward motions, etc., are displayed. The data in the display sections 13a and 13b are observed by an examiner through an objective lens 1, zoom variable-power optical systems 2a and 2b, and finder optical systems Fa and Fb.

Description

Detailed Description of the Invention 9. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a stereomicroscope mainly used in eye surgery and the like.

[Conventional technology J Stereo microscopes are widely used for medical purposes such as surgeries and examinations, research purposes, etc. 1 They are useful for improving the precision and safety of surgeries, etc. 0 For example, For diseases of the eye that form the optical system, appropriate measures are taken to restore the optical system, but if some kind of surgery is performed on the eyeball, it may be necessary to restore its shape and function. In particular, as the number of cataract surgeries increases, how the corneal shape is restored after surgery has become an important factor that determines the success or failure of the surgery. For this reason, it is extremely important to add a corneal shape measurement function to a surgical stereomicroscope, observe and measure the shape during and before and after the surgery, and inform the surgeon of this.

[Object of the Invention] The object of the present invention is to display data related to the object near the object so that it can be observed within the field of view of the microscope without adding anything to the microscope main body, and also to improve the observation magnification etc. regarding the microscope main body. The objective is to provide a stereomicroscope that can display data as well.

[Summary of the Invention] The gist of the present invention for achieving the above-mentioned object is to include an information presentation means disposed near a subject, and an observation means for observing the information presented by the presentation means together with the subject. This stereo microscope is characterized by:

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

FIG. 1 is a configuration diagram of an optical system and arithmetic processing system illustrating a case where the present invention is applied to a surgical microscope for corneal shape measurement to observe an affected eye E, and FIG. 2 is a front view of a display device. . Affected eye E
A common objective lens 1 is placed facing the lens, zoom magnification optical systems 2a and 2b, and beam splitters 3a and 3 are placed in pairs on the left and right optical axes Oa and Ob, respectively.
b and viewfinder optical systems Fa and Fb (not shown), the affected area E can be observed stereoscopically by the examiner. Further, as part of the optical system for corneal shape measurement, a ring-shaped light source 4 is provided between the eyepiece E and the objective lens l,
An imaging lens 5 and a light receiving element surface 6 such as a two-dimensional COD are installed on the reflection side of the beam splitter 3b. Further, as a magnification change detection means, a variator 2 in the zoom magnification optical system 2b is used.
A pointer 7 is connected to v, and an encoder 8 for detecting this pointer 7 is arranged. The light receiving element surface 6 is an A/D converter 9
is connected to a microprocessor unit (hereinafter referred to as MPU) 10 via an encoder 8. Ring-shaped light source 4.
Driver 11. The measurement switches 12 are also M in parallel.
The display device 13 is connected to the driver 11.

Since the embodiment of the present invention has the above-described configuration, the illustrated L Z
-) Q. A part of the luminous flux emitted from the thinking eye E irradiated by the bright optical system becomes a seven-focal luminous flux at the objective lens 1 and enters the zoom variable magnification optical system 2a, and is then transmitted to the beam splitter 3a. A part of the luminous flux is used, for example, for side viewing (not shown) or for photographing with a TV left camera, and the rest is delivered to the examiner type through the finder optical system Fa and observed. Similarly, the light flux that has entered the zoom magnification optical system 2b via the objective lens l reaches the examiner's eye via the beam splitter 3b and the finder optical system Fb, and together with the light flux that has entered via the finder optical system Fa, the light flux enters the zoom magnification optical system 2b. Contributes to image formation.

On the other hand, the light beam that is the indicator from the ring-shaped light source 4 is reflected by the cornea C of the eye E, forming a so-called Mayer image M that is a ring-shaped corneal reflection image. This Mayer image M passes through the objective lens l and the zoom variable magnification optical system 2b, and then passes through the beam splitter 3b.
The light is reflected laterally and projected onto the light receiving element surface 6 via the imaging lens 5, and the shape of the cornea C, such as the radius of curvature r, is measured. A portion of the Mayer image M is then observed by the examiner through the finder optical systems Fa and Fb.

Further, the degree of magnification of the zoom magnification optical systems 2a and 2b can be detected by reading the digit n of the pointer 7 connected to the variator 2v with the encoder 8.

These corneal topography measurements and projection magnification corrections are performed using the
It is started by pressing the measurement switch 12 after alignment is completed, the MPU10 enters the operating state, the ring-shaped light source 4 is turned on, and the signal from the projected image of the Mayer image M formed on the light receiving element surface 6 is A. After being converted into a digital signal by the /D converter 9, it is input to the MPU10.

On the other hand, a signal regarding the degree of magnification read by the encoder 8 as the position of the pointer 7 connected to the variator 2v is also input to the MPU 10 at the same time. Then, within the MPU 10, the light receiving element surface 6 is
The projection magnification is corrected by arithmetic processing of input signals from the cornea, and the result of the calculation is displayed on the display 13 via the driver 11 as data for displaying the shape of the cornea.

The data display 13 is a liquid crystal display attached to the eyelid opening device 14, and the first display section 13a displays the shape measurement data of the cornea C, and the second display section 13b displays the magnification of the stereomicroscope and the microscope data. Mode data of the operation switch, such as data such as up and down movement, is displayed. The data on these display sections 13a and 13b are displayed on the objective lens 1,
Zoom variable magnification optical system 2a, 2b, finder optical system Fa,
Observed by the examiner via Fb.

FIG. 3 shows another embodiment, in which the light-receiving element surface 6 of the Mayer image M is formed by the zoom variable magnification optical system 2b shown in the first embodiment.
In a surgery in which the projection magnification is corrected, the observation magnification is changed depending on the situation or the operator's preference. At this time, the size of the Mayer image M projected onto the light-receiving element surface 6 changes, so when measuring this projected image, it is necessary to correct the magnification. The Mayer image M' is projected onto the light-receiving element surface 6 similarly to the Mayer image M. Measurement of these images is started by pressing the measurement switch 12 as in the first embodiment, the MPU 10 enters the operating state, and the ring-shaped light source 4 is turned on. Signals from the projected images of the Mayer images M and M' formed on the light receiving element surface 6 are input into the MPU 10 after being converted into digital signals by the A/D converter 9. Then, each signal is subjected to arithmetic processing, and the projection magnification is corrected taking into account that the result from the Mayer image M° has a predetermined shape, and is calculated as corneal shape data. Furthermore, this result is displayed on the display 22 via the driver 11.

In FIG. 4, a display 22 that displays a measurement signal using this LED is attached to the eyelid opening device 14 together with a model cornea 21, and the model cornea 21 is attached to a pedestal 20 of the eyelid opening device 14. FIG. 5 shows an example of the display by the display 22, including corneal astigmatism, maximum corneal curvature radius D2, minimum corneal curvature radius [19, maximum corneal curvature radius direction 04. The minimum corneal curvature radial direction D5 is displayed.

6 to 8 show other embodiments of the display.

The measurement results are displayed on the display 30 via the driver 11. The contents of the display 30 are as shown in FIG. The direction is D5, and the characters are mirror-surfaced. This display content is reflected by the convex mirror 32 provided on the pedestal 31 of the eyelid opening device 14, and is reflected by the objective lens l, zoom magnification optical system 2a, 2b, finder optical system Fa,
Observed through Fb.

FIGS. 9 to 11 show still another embodiment of the display, in which the measurement calculation results are displayed on the display 40 via the driver 11. This display content is displayed on the eyelid opening device 14J by the projection lens 41.
: is projected onto the screen 42 of. This screen 42
The display contents are as shown in Fig. 10, for example.
The image is observed through the objective lens l, zoom magnification optical systems 2a and 2b, and finder optical systems Fa and Fb.

Note that the display device 13.22 and the convex mirror 32.22 in the above-mentioned embodiments. The screen 42 is attached to the eyelid opening device 14 of the thinking eye E, but these may be placed separately near the thinking eye E.
It can be installed by pasting it near the yH eye E. Furthermore, if the display unit is used at a magnification that is out of the field of view of the microscope, it may be possible to automatically change the magnification to a certain level by operating a separate switch.

[Effects of the Invention] As explained above, according to the stereomicroscope according to the present invention,
A display device is provided inside the microscope body, making it possible to easily guide light into the field of view of the microscope, and it is extremely easy to use because there is no need to take your eyes off the viewfinder to check data during a surgery.

[Brief explanation of drawings]

The drawings show an embodiment of the solid m-microscope according to the present invention, FIG. 1 is a configuration diagram of the first embodiment, FIG. 2 is a front view of the display, and FIG. 3 is the configuration of the second embodiment. figure. Fig. 4 is a perspective view of the display example, Fig. 5 is a front view of the display, Fig. 6 is a configuration diagram of the third embodiment, Fig. 7 is a front view of the display, and Fig. 8 is the display example. FIG. 9 is a configuration diagram of the fourth embodiment, FIG. 10 is a front view of the display, and FIG. 11 is a perspective view of a display example. Reference numeral 1 is an objective lens, 2a and 2b are zoom magnification systems, 2v is a variator, 3a and 3b are beam splitters,
4 is a ring-shaped light source, 5 is an imaging lens, 6 is a light receiving element surface,
7 is a pointer, 8 is an encoder, 9 is an A/D converter, 10 is an MPU, 11 is a driver, 12 is a measurement switch, 13.
22, 30, and 40 are display devices, 14 is an eyelid opening device, 21 is a model cornea, 32 is a convex mirror, 41 is a projection lens, and 42 is a screen.

Claims (1)

[Scope of Claims] 1. A stereoscopic microscope characterized by having an information presentation means disposed near a subject, and an observation means for observing the information presented by the presentation means together with the subject. 2. The stereoscopic microscope according to claim 1, wherein the information presented by the presenting means is measurement data from a measuring means. 3. The stereoscopic microscope according to claim 2, wherein the measuring means has an index projected toward the subject. 4. The stereoscopic microscope according to claim 2, wherein the object to be examined is the cornea of the eye to be examined, and the information is data regarding the shape of the cornea. 5. The stereoscopic microscope according to claim 1, wherein the information presented by the presentation means is mode information regarding operation. 6. The stereomicroscope according to claim 1, wherein the presentation means is an electro-optical display. 7. The stereoscopic microscope according to claim 1, wherein the presenting means includes an image forming means using a reflective optical system. 8. The stereoscopic microscope according to claim 1, wherein the presentation means is a screen member. 9. The stereoscopic microscope according to claim 4, wherein the presenting means is added to an eyelid opening device. 10. The stereoscopic microscope according to claim 1, wherein the observation means includes an imaging means and a monitor device.