JPH06331895A - Optical mechanism for microscope - Google Patents

Abstract

PURPOSE:To provide an optical mechanism for a microscope which is excellent in operability and where a heavy substance need not be largely moved. CONSTITUTION:Since another optical path K2 for guiding a luminous flux along turning shafts 6 and 7 is branched to be formed, it is possible to provide an auxiliary ocular part or a photographing device on the shafts 6 and 7. Namely, even when a microscope main body is turned, the shafts 6 and 7 do not move at the center of turning. Therefore, even when the microscope main body is turned the auxiliary ocular part or the photographing device is not largely moved by setting it on the shafts 6 and 7. The operability of the microscope is improved, and satisfactory safety is obtained because the photographing device being the heavy substance is not deflected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microscope optical mechanism.

[0002]

2. Description of the Related Art In many cases, brain surgery and heart surgery are performed while observing the affected area with a microscope (Japanese Patent Laid-Open No. Sho 5).
6-32110). The microscope used in such an operation is rotatably supported around a rotation axis, and an eyepiece portion seen by the main doctor is provided at a position different from the rotation axis. Therefore, by rotating the microscope about the rotation axis, the direction of observing the affected area from the eyepiece can be changed. Further, in this type of microscope, in addition to the eyepieces seen by the main doctor, an auxiliary eyepiece seen by the assistant doctor is provided. This auxiliary eyepiece is provided at a position different from the main eyepiece, and the main doctor and the assistant doctor, while observing the same part of the affected area from the main eyepiece and the auxiliary eyepiece, respectively. , Cooperate with each other to perform surgery. In addition, a photographing device such as a camera or a video may be installed instead of the auxiliary eyepiece unit.

[0003]

However, in such a conventional technique, the subject who rotates the microscope is the main doctor. Therefore, if the main doctor rotates the microscope abruptly due to the operation, the assistant The doctor's eyes may be separated from the auxiliary eyepiece, or the auxiliary eyepiece may hit the assistant doctor's eye, which is very inconvenient in terms of operability. In addition, when a camera or video shooting device is installed, each time the microscope is rotated, the shooting device, which is a heavy object, also shakes, which is not only disadvantageous in terms of operability, but also prevents rotation with the microscope. There is a risk that the moving image capturing device may hit people around, which is not preferable in terms of safety.

The present invention has been made by paying attention to such a conventional technique, and provides an optical mechanism of a microscope which has a good operability and which does not require a heavy object to be largely moved.

[0005]

In order to achieve the above-mentioned object, an optical mechanism of a microscope according to the present invention has an eyepiece of the microscope main body, which guides a light beam introduced from an objective lens of the microscope main body along an optical path. In the optical mechanism of the microscope, a rotating shaft is provided at a position different from the eyepiece part of the microscope main body, and the microscope main body is rotatable about the rotating shaft. An optical element such as a beam splitter is provided on the way to separate and form another optical path for guiding the light beam along the rotation axis.

[0006]

According to the present invention, since an optical element such as a beam splitter is provided in the middle of the optical path and a separate optical path for guiding the light beam along the rotation axis is formed in a branched manner, an auxiliary eyepiece section may be provided on the rotation axis. Alternatively, a photographing device can be provided on the rotating shaft.
That is, even if the microscope main body is rotated, the rotation axis does not move at the center of rotation. Therefore, if an auxiliary eyepiece or a photographing device is installed on this rotation axis, even if the microscope main body is rotated, The auxiliary eyepiece and the imaging device do not move much. Therefore, the operability of the microscope is good, and the imaging device, which is a heavy object, does not shake, which is also preferable in terms of safety.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to FIGS.
It will be described based on. In the figure, A is the front side, B is the rear side,
In the description, C is the right side and D is the left side.

The microscope according to this embodiment is of a type used in brain surgery and eye surgery. Reference numeral ₁ denotes a microscope body, a rear side is provided with a lens barrel 2 having an objective lens L ₁ (see FIG. 2) in a lower portion thereof, and a pair of left and right main eyepieces 3, 4 are provided on an upper side thereof. There is. An illumination system 5 is for illuminating the inside of the lens barrel 2.

Support pipes 6 and 7 as "rotating shafts" are provided on both left and right sides of the microscope body 1, and the microscope body 1 can be rotated in the α direction around the support pipes 6 and 7. It is like this. An electromagnetic clutch CR ₁ is provided on the left support pipe 7, and the α
The rotation position in the direction can be locked. Further, a support pin 8 (see FIG. 2) is provided at the front end of the microscope body 1, and the microscope body 1 has the support pin 8
It is also possible to rotate in the β direction around.
The support pin 8 is also provided with an electromagnetic clutch CR ₂ so that the turning position in the β direction can be locked.

Next, the optical mechanism in the microscope body 1 will be described. First, the optical path K ₁ for guiding the light beam to the main eyepieces 3 and 4 will be described. The light beam reflected by the affected part passes through the objective lens L ₁ in the lens barrel 2 and the other lenses L ₂ and L ₃ and then passes through the beam splitter S ₁ on the upper part of the microscope main body 1 to be directly used as the main eyepiece. It reaches 3 and 4. This is the optical path K ₁
Therefore, the main doctor can observe the affected area from the eyepieces 3 and 4.

[0011] The light beam reflected by the beam splitter S ₁ is reflected toward the front to form a Betsuhikariro K ₂ which is branched from the optical path K _1. Of the left and right separate optical paths K ₂ , for convenience, the right separate optical path K ₂ will be described first. The light beam passing through the other path K ₂ on the right side reaches another beam splitter S ₂ and is reflected downward there. The light beam that passes through the beam splitter S ₂ without being reflected forms another optical path K ₃ to reach the facing eyepiece mirror. Then, the light flux reflected downward along the separate optical path K ₂ is changed from the prism P _{1 to the} prism P.
₂ → prism P ₃ → lens L ₅ → lens L ₆ → prism P ₄ → prism P ₅ → prism ₆ and then hit the front side of the beam splitter S ₃ for both left and right. The light beam striking the front side of the beam splitter S ₃ is reflected to the right and guided into the support pipe 6. This support pipe 6 is provided with an auxiliary eyepiece (not shown) so that an assistant doctor can observe the affected area.

Also on the other path K ₂ on the left side, similarly to the right side, the light beam reflected from the beam splitter S ₁ to the front side reaches another beam splitter S ₂ and is reflected to the lower side there.
The light beam passing through the beam splitter S ₂ on the left side is further separated by another optical path K ₃ to the facing eyepiece mirror, similarly to the right side.
To form. Then, the light flux reflected downward along the different optical path K ₂ is the prism P ₇ → prism P ₈ → lens L ₇
→ lens L ₈ → prism P ₉ → prism P ₁₀ → prism
After passing through ₁₁ , it goes around to the front side and hits the rear side of the beam splitter S ₃ for both left and right. The light beam that strikes the rear side of the beam splitter S ₃ is reflected to the left side and guided into the support pipe 7. A video camera device (photographing device) (not shown) is attached to the support pipe 6 so that the state of the affected area can be photographed.

As described above, in the microscope of this embodiment, the light path ₁ for guiding the light beam reflected from the affected area to the main eyepieces 3, 4 and the support pipes 6, 7 on the left and right branched from the light path _1. It is provided with another optical path K ₂ guided inside. Therefore, even if the main doctor rotates the microscope body 1 in order to change the observation angle by the eyepieces 3 and 4, the auxiliary eyepiece (not shown) provided on the right support pipe 6 moves. In addition, the photographing device (not shown) provided on the left support pipe 7 does not shake greatly. Therefore, operability and safety are excellent.

[0014]

The optical mechanism of the microscope according to the present invention is as described above, and an optical element such as a beam splitter is provided in the middle of the optical path so that the light beam is guided along the rotation axis. Since the separate optical path to be guided is formed in a branched manner, it is possible to provide an auxiliary eyepiece portion on the rotation shaft or an imaging device on the rotation shaft. That is, even if the microscope body is rotated,
Since the rotation axis does not move around the center of rotation, installing an eyepiece or an imaging device on this rotation axis will allow the microscope body to rotate,
These auxiliary eyepieces and imaging devices do not move much. Therefore, the operability of the microscope is good, and the imaging device, which is a heavy object, does not shake, which is also preferable in terms of safety.

[Brief description of drawings]

FIG. 1 is a plan view showing an optical mechanism of a microscope according to an embodiment of the present invention.

FIG. 2 is a side view seen from a direction of an arrow DA in FIG.

FIG. 3 is a perspective view showing a structure of a right optical path.

[Explanation of symbols]

1 Microscope Main Body 3, 4 Eyepiece L ₁ Objective Lens P ₁ ~ P ₁₁ Prism S ₁ ~ S ₃ Beam Splitter K ₁ ~ K ₃ Optical Path

Claims (2)

[Claims] 1. A light beam introduced from an objective lens of a microscope body is guided along an optical path to an eyepiece section of the microscope body, and a rotating shaft is provided at a position different from the eyepiece section of the microscope body. In a microscope optical mechanism in which the microscope main body is rotatable about the rotation axis, an optical element such as a beam splitter is provided in the optical path to guide the light beam along the rotation axis. An optical mechanism of a microscope, characterized in that an optical path is branched. 2. The optical mechanism for a microscope according to claim 1, wherein an electromagnetic clutch is provided on the rotating shaft.