JP3573839B2 - Multi-field microscope - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a multi-field microscope capable of simultaneously observing an image from a fiberscope in the same field of view as needed during observation with a stereo microscope.
[0002]
[Prior art]
For example, surgeries such as ophthalmology and brain surgery require extremely fine procedures, and these days, surgical procedures are being performed while observing the affected part with a stereoscopic microscope. On the other hand, fiberscopes (endoscopes) have already been generally used as medical diagnostic treatment instruments mainly for the digestive system, but recently, ultra-fine diameters of less than 1 mm have been developed and can be used in the past. Observation of thin and narrow lumens such as blood vessels, mammary glands, pancreatic ducts, intraocular, and cerebral blood vessels, which were not possible, has become possible, so the application range has been further expanded.
[0003]
[Problems to be solved by the invention]
Recently, in precision surgery, etc., while observing the entire image of the target site with a stereoscopic microscope with relatively low magnification and a wide field of view, the details or the inner part of the target site are precisely analyzed with a fiberscope with relatively high magnification. There is a growing demand for observation. However, in this case, it is necessary to arrange the stereomicroscope and the fiberscope, move the eyes once away from one another and turn to the other, and in each case, it is necessary to adjust the field of view and the focus, which complicates the operation. In addition, the higher the magnification of the fiberscope, the narrower the field of view, so that it becomes extremely difficult to capture the target site to be sought in the field of view of the fiberscope.
The present invention has been made in order to solve the above-mentioned problem, and accordingly, an object of the present invention is to enable observation by a stereoscopic microscope and observation by a fiberscope simultaneously in the same field of view, and furthermore, a target part to be observed is a fiber. It is an object of the present invention to provide a multi-field microscope which can be easily captured in a field of view of a scope.
[0004]
[Means for Solving the Problems]
The above problem is to either image optical path for the left eye or right eye leading to ocular from the objective lens unit of the stereomicroscope alone, a portion of the image light path, the image light path and the optical axis of this concurrent the image light from the fiber scope to, and means a for inserting toward the eyepiece section, the image light from the fiberscope, and means B for observation in the field of view of the stereomicroscope, the one The field of view of the eyepiece provided in the image light path of the camera is such that the image field of view from the fiberscope is arranged in the image field of view from the stereo microscope, and the field of view of the eyepiece provided in the other image light path is the field of view of the stereo microscope. The problem can be solved by providing a multi-field microscope consisting only of the image field of view . Preferably, the means A is detachable. Further, it is preferable that the objective lens portion of the fiberscope is arranged so as to be observed within the visual field of the stereomicroscope.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a double-field microscope of this embodiment. In FIG. 1, this double-field microscope generally includes eyepieces 1a and 1b for the left and right eyes corresponding to the left and right eyes of the observer, a lens barrel 2, and an objective lens (hereinafter, referred to as " A stereo microscope main body 10 comprising a microscope objective lens section 3) is supported on the pedestal 4 so as to be movable up and down, and is moved up and down by a focus adjustment knob 5 so that the observation object M is focused.
[0006]
The lens barrel 2 is provided with a mirror attachment / detachment knob 6 that allows a mirror disposed inside the lens barrel 2 to be attached and detached at any time from an optical path inside the lens barrel by sliding or rotating.
An image fiber 21 is pulled out from the side of the lens barrel 2 via the image adjustment mechanism 7, and the image fiber 21 is connected to an insertion portion 22 of the fiberscope 20. Illumination light is introduced from the illumination light source 23 through the illumination optical fiber 24 into the insertion section 22, and at least a part of the observation target M is illuminated from the objective lens section 25 at the tip of the insertion section 22. ing.
[0007]
As shown in FIG. 2, an objective lens unit (hereinafter, referred to as an “FS objective lens unit”) 25 of the fiber scope includes an illumination optical fiber 24 connected to an illumination light source 23, a terminal 26 of the image fiber 21, An objective lens 27 attached to the tip is provided. As shown in FIG. 2A, a front view of the tip is provided eccentrically in a bundle of optical fibers 24 for illumination. Have been.
[0008]
FIG. 3 shows the optical system of this double-field microscope.
In FIG. 3, the optical system of the stereomicroscope main body 10 includes eyepieces 1a and 1b for the left eye and the right eye, and a microscope objective 3 common to the left and right eyes. The image light from the observation target M passes through the microscope objective lens unit 3, passes through image light paths (hereinafter, referred to as “barrel light paths”) 9 a and 9 b formed inside the lens barrel unit 2, and passes through the left eye. Toward the eyepieces 1a and 1b for the right and right eyes.
[0009]
On the other hand, the image light received by the fiberscope 20 passes through the image fiber 21 and enters the image adjustment mechanism 7. The image light that has passed through the image adjustment mechanism 7 enters from the side of the lens barrel 2, is disposed in the lens barrel 2, and is connected to the mirror attaching / detaching knob 6 by a mirror 8 for the left eye or right eye. The light is refracted toward one of the eyepieces for the eye, for example, the eyepiece 1a, so that the optical axis of the lens barrel 9a is parallel to the optical axis, and the optical path from the fiberscope 20 (hereinafter referred to as the “FS optical path”). ) 29 is formed. In other words, in FIG. 3, the mirror 8 constitutes means A for inserting the image light from the fiberscope 20 into the image light path 9a from the stereomicroscope toward the eyepiece 1a.
[0010]
The above-described image adjustment mechanism 7 is an erecting adjustment unit composed of a relay lens that can move the optical path from the fiberscope 20 back and forth with respect to the optical axis and in any vertical direction, and can change the optical axis angle. 7a, and a focus adjustment unit 7b composed of a relay lens that adjusts an image from the fiberscope 20 and an image from the stereomicroscope main body 10 so as to simultaneously focus on the same field of view. Therefore, in FIG. 3, the image adjustment mechanism 7 functions as the means B for observing the image light from the fiberscope 20 in the field of view.
[0011]
In this double-field microscope, the stereo microscope main body 10 is focused on the observation target M, the illumination light source 23 is turned on, the FS objective lens unit 25 is directed to the observation target, and the image adjustment mechanism 7 is adjusted. As shown in FIG. 4, an image field 31 of the fiberscope 20 is formed in the image field 30 of the stereomicroscope main body 10, and both images can be observed simultaneously in the same field.
In other words, in the multi-field microscope according to the present invention, the field of view of the eyepiece 1a provided on one image optical path 9a is such that the image field of view 31 from the fiberscope is arranged within the image field of view 30 from the stereo microscope. (FIG. 4), the field of view of the eyepiece 1b provided in the other image light path 9b consists only of the image field from the stereomicroscope (not shown).
[0012]
At this time, if the FS objective lens unit 25 is arranged so as to be observed in the image field of view 30 of the stereomicroscope main body, the observation target site of the fiberscope 20 can be separated from the eyepiece lens units 1a and 1b. Will be able to check without any problem.
[0013]
The mirror 8 can be removed from the barrel optical path 9a at any time by operating the mirror attaching / detaching knob 6. When the mirror 8 is removed, the image light from the fiber scope 20 does not reach the eyepiece 1a, so that the image field 31 of the fiber scope 20 disappears from the stereo microscope field 30 so that only the image of the stereo microscope main body can be observed. become.
Instead of the mirror attaching / detaching knob 6, the mirror 8 can be attached / detached using a foot switch. In this case, there is no need for manual operation, which is more convenient.
[0014]
When the mirror attaching / detaching mechanism is not attached, if the illumination power supply 23 is turned off or the image field 31 of the fiber scope is darkened by covering the FS objective lens section 25, the image field 31 disappears from the field, and Only the image of the microscope main body 10 is observed. However, in this case, the brightness of the eyepiece 1a is slightly darker than that of the eyepiece 1b.
[0015]
If the illumination in the FS objective lens unit 25 is dark, the image from the fiber scope 20 and the image from the stereomicroscope main body 10 may appear to overlap in the image field 31 of the fiber scope. This is solved by increasing the light amount of the illumination light source 23. Therefore, if the light amount of the illumination light source 23 is variable, the image in the image field 31 of the fiberscope can be changed from a double image to a single image in a stepless manner.
[0016]
As a method of using the multi-field microscope of the present invention, first, the mirror 8 is removed from the lens barrel optical path 9a so that the image field 31 of the fiberscope does not appear in the field 30 of the stereomicroscope main body. Observe the object as a stereoscopic microscope of the field of view, and when the target part to be precisely observed appears in the field of view, insert the FS objective lens unit 25 into the field of view 30 of the stereoscopic microscope while continuing observation from the eyepiece unit. If a mirror 8 is inserted into a lens barrel optical path 9a, a precise image of a desired portion can be observed in an image field 31 of a fiberscope.
[0017]
Further, as another usage, for example, in the case of a surgical operation or the like, the FS objective lens unit 25 is inserted into the inner surface or the back side of the tissue of the target site while observing the surface layer of the target site with the stereomicroscope main body. It is also possible to simultaneously observe the surface layer of the target part in the visual field 30 of the stereomicroscope and its inner surface tissue in the image visual field 31 of the fiberscope.
[0018]
In the above embodiment, the mirror 8 is used as a means for making the lens barrel optical path 9a and the FS optical path 29 parallel, but this means is not limited to a mirror, and for example, a half mirror or a prism can be used.
[0019]
【The invention's effect】
The double-field microscope of the present invention comprises: means A for inserting image light from a fiberscope into a part of one of the lens barrel optical paths for the left eye or the right eye so that the optical axes are parallel to each other; Means B for observing the image light within the field of view of the stereoscopic microscope. The field of view of the eyepiece provided on the one image light path is such that the image field of view from the fiberscope is arranged within the image field of view from the stereomicroscope. The field of view of the eyepiece provided on the other image optical path is composed of only the image field of view from the stereomicroscope, so that the field of view of the fiberscope is formed within the field of view of the stereomicroscope. Observation and observation with a fiberscope can be performed simultaneously in the same field of view.
[0020]
If the means for inserting image light from the fiberscope into the lens barrel optical path , that is, means A, is detachable, the field of view of the fiberscope can be erased from the field of view of the stereomicroscope main body, and the single field of view of the stereomicroscope Is obtained, this double-field microscope can also be used as a normal single-field stereo microscope.
If the FS objective lens unit, which is the objective lens unit of the fiberscope, is arranged so that it can be observed within the field of view of the stereomicroscope, the observation target site of the fiberscope can be confirmed without keeping an eye on the eyepiece unit. become.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of the present invention.
2A and 2B are a cross-sectional view and a front view, respectively, showing a fiberscope objective lens unit in the embodiment.
FIG. 3 is an optical path diagram showing an optical system in the embodiment.
FIG. 4 is an image diagram illustrating a visual field in the embodiment.
[Explanation of symbols]
1a, 1b: eyepiece, 2: lens barrel, 3: objective lens of stereomicroscope, 6: mirror attaching / detaching knob, 7: image adjustment mechanism, 8: mirror, 9a, 9b: lens barrel optical path, 10: entity Microscope body, 20: Fiberscope, 25: Objective part of fiberscope, 29: Fiberscope optical path

Claims (3)

A multi-field microscope capable of simultaneously observing an image from a stereo microscope and an image from a fiberscope within the same field of view,
Fiberscope as only one optical image paths one for the left eye or right eye, a portion of the image light path, the image light path of this and the optical axis is parallel extending from the objective lens unit of the stereomicroscope to the eyepiece section the image light from, and means a for inserting toward the eyepiece section, the image light from the fiberscope, and means B for observation in the field of view of the stereomicroscope,
The field of view of the eyepiece provided in the one image light path is arranged with the image field of view from the fiberscope in the image field of view from the stereo microscope, and the field of view of the eyepiece provided in the other image light path is A multi-field microscope comprising only a visual field from a stereo microscope. 2. The double-field microscope according to claim 1, wherein the means A is detachable. 2. The double-field microscope according to claim 1, wherein the objective lens unit of the fiberscope is arranged so as to be observable in a field of view of a stereoscopic microscope. 3.

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