JP2706510B2 - Viewing device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewing device that allows a plurality of observers to observe and photograph the same object.

[Conventional technology]

In the case of observing the same object with a plurality of observers, as a co-viewing device that can obtain the observation magnification desired by each observer, for example, JP-A-53-17353 and U.S. Pat. As described in the specification of Japanese Patent No. 3186300, a plurality of mirrors having a zoom mechanism are arranged so that the same field of view can be observed, and each can be zoomed independently. As described in No. 1110, a main magnification mechanism is provided in the main observation optical path, and a sub-magnification mechanism is provided in a sub-observation optical path formed by dividing the main observation optical path after the main magnification. In some cases, after the main observer changes the magnification by the main zoom mechanism, the auxiliary observer further zooms to the magnification desired by the sub-magnification mechanism.

[Problems to be solved by the invention]

However, in the former method, the exclusive space around the observer is large and easily obstructs the observer, and since the respective mirrors are present at different angles with respect to the viewing plane in the same direction. There was a problem that a visual field could not be obtained. In particular, in the case of a surgical microscope, if the occupied space around the observer is large, it is inconvenient because the degree of freedom of the operator is small when performing a joint operation. Further, if the same visual field is not obtained, if the operative part is too narrow, it may not be possible for some observers to observe. Further, this type has a problem that it is expensive because there are a plurality of mirrors having the same zoom mechanism.

On the other hand, in the latter method, the same field of view can be observed with a small size, but when the magnification of the main observation optical path changes due to the main magnification changing mechanism, the magnification of the sub observation light also changes at the same time. There was a problem that the magnification had to be changed to the desired magnification by the changing mechanism. And, especially in the case of a joint viewing device such as a surgical microscope, if the magnification of the accessory surgeon changes due to the convenience of the main surgeon when performing joint surgery, the operation must be interrupted and the magnification must be adjusted again. It is also very dangerous because there is.

In view of the above problems, the present invention does not obstruct the observer because the occupied space around the observer is small, and the same visual field can be obtained by a plurality of observers. Without any adverse effects such as interruption of surgery for re-adjustment of the magnification since each desired magnification of a plurality of observers can be obtained independently, and without providing a plurality of mirrors having the same zoom mechanism It is an object of the present invention to provide an inexpensive viewing device that can be used.

[Means and actions for solving the problem]

The viewing device according to the present invention is provided with a main zooming mechanism in a main observation / photographing optical path, and a sub-observation optical path formed by dividing the main observation / photographing optical path after the main zooming mechanism. In the viewing device having a zooming mechanism, by providing a control unit that changes the magnification by the sub-magnification mechanism so as to cancel the magnification change by the main zooming mechanism, the exclusive space around the observer is reduced. The same field of view can be obtained by a plurality of observers, the desired magnification of each of the plurality of observers can be obtained independently, and it is not necessary to provide a plurality of mirrors having the same zoom mechanism. is there.

〔Example〕

Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a schematic diagram of the optical system of the first embodiment. 1 is an objective lens, 2 is a main variable power mechanism provided after the objective lens 1, 3 is an optical path splitting element provided after the main variable power mechanism 2,
Reference numeral 4 denotes a main eyepiece system provided on one optical path 5 divided by the optical path dividing element 3, and these constitute a main observation optical system directed to a main observer 6. 7 is an optical path splitting element 3
Is a sub-magnification mechanism provided on the other optical path 8 divided by the sub-magnification, 9 is a sub-eyepiece system provided after the sub-magnification mechanism 7, and these are an objective lens 1, a main magnification mechanism 2, an optical path Split element 3
Together, they constitute a sub-observation optical system directed to the sub-observer 10. Reference numerals 11 and 12 denote a main zoom operation unit and a sub-magnification operation unit, each of which comprises a foot switch, a hand switch, and the like. These are connected to the main zoom mechanism 2 and the sub-magnification mechanism 7 via the control unit 13. ing. The control unit 13 receives the signal from the main zooming operation unit 11 and drives the main zooming mechanism 2 and controls the zooming mechanism 2.
The sub-magnification mechanism 7 is driven so as to cancel the change in magnification in the sub-observation system, and only the sub-magnification mechanism 7 is driven in response to a signal from the sub-magnification operation unit 12. It has become.

In FIG. 1, only one main observation optical system and one sub observation optical system are shown, but in the case of a stereoscopic microscope for surgery, it is assumed that there is one pair each. Since the present embodiment is configured as described above, when the main observer 6 operates the main zooming operation unit 11 to change the observation magnification, the main zooming mechanism 2 is driven by the control unit 13 to perform the operation. The observation magnification of the main observer 6 changes by an appropriate magnification. At this time, the observation magnification of the sub-observer 10 also tries to change, but at the same time, the control unit
By 13, the sub-magnification mechanism 7 is driven so as to cancel the magnification change due to the operation of the main magnification mechanism 2, and the observation magnification of the sub-observer 10 does not change. On the other hand, when the sub-observer 10 operates the sub-magnification operation unit 12 to change the observation magnification, only the sub-magnification mechanism 7 is driven by the control unit 13, and the observation magnification of the sub-observer 10 is increased by a magnification commensurate with the operation. Only the observation magnification does not change.

Therefore, according to the present embodiment, since the magnifications desired by a plurality of observers can be obtained independently, there is no adverse effect such as interruption of the operation for re-adjusting the magnification. In addition, since the same field of view can be obtained by a plurality of observers, there is no possibility that some observers cannot be observed in the operation. In addition, since the exclusive space around the observer is reduced, it does not hinder the observer.
Furthermore, since there is no need to provide a plurality of mirrors having the same zoom mechanism, the cost is low.

FIG. 2 is a schematic diagram of the optical system of the second embodiment, which is a manual type main drum type zooming mechanism 14 and sub drum type zooming, respectively, instead of the main zooming mechanism 2 and the auxiliary zooming mechanism 7. The first embodiment differs from the first embodiment in that a control unit 16 is used instead of the main scaling operation unit 11, the sub-magnification operation unit 12, and the control unit 13 using a mechanism 15. Is the same as Then, the control unit 16 detects the operation of the main drum type zooming mechanism 14 and drives the sub drum type zooming mechanism 15 so as to cancel the change in magnification in the sub observation system due to the operation, Further, even if the auxiliary drum type zooming mechanism 15 operates, the main drum type zooming mechanism 14 is not affected.

In FIG. 2, only one main observation optical system and one sub observation optical system are shown, but in the case of a stereoscopic microscope for surgery, it is assumed that there is one pair each. Further, the main drum type zooming mechanism 14 and the sub drum type zooming mechanism 15 may be configured as units that can be inserted into and removed from the main observation optical system and the sub observation optical system, respectively.

The present embodiment is configured as described above, so that the main observer 6 tries to change the observation magnification by using the main drum type zooming mechanism 14.
Is manually operated to set the main observer 6 to a magnification corresponding to the operation.
Changes the observation magnification. At this time, the observation magnification of the sub-observer 10 also attempts to change in the same manner, but at the same time, the control unit 16 detects the operation of the main drum type magnification mechanism 14 and changes the magnification change by the main drum type magnification mechanism 14. Since the sub-drum type magnification changing mechanism 15 is driven so as to cancel, the observation magnification of the sub-observer 10 does not change. On the other hand, when the sub-observer 10 manually operates the sub-drum type magnification changing mechanism 15 to change the observation magnification, only the observation magnification of the sub-observer 10 changes to a magnification corresponding to the operation, and the main observer 6 The observation magnification does not change.

Therefore, according to the present embodiment, the same effects as those of the first embodiment can be obtained, but the main drum type zooming mechanism 14 and the sub drum type zooming mechanism 15 are respectively connected to the main observation optical system and the sub observation optical system. If configured as a unit that can be inserted into and removed from the optical system, it can be attached to an existing or currently used microscope, etc.
It is economical without having to buy a new mirror.

Although not shown, it goes without saying that in each embodiment, the main observation optical system and the sub observation optical system may include a photographing optical system.

〔The invention's effect〕

As described above, the viewing device according to the present invention has no adverse effects such as interruption of surgery for re-adjustment of the magnification, does not cause an observer who cannot observe during surgery, does not disturb the observer, It has an important practical advantage of being inexpensive.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an optical system of a first embodiment of a viewing device according to the present invention, and FIG. 2 is a schematic diagram of an optical system of a second embodiment. DESCRIPTION OF SYMBOLS 1 ... Objective lens 2 ... Main magnification mechanism 3 ... Optical path splitting element 4 ... Main eyepiece system 5,8 ... Optical path 6 ... Main observer 7 ... Sub-magnification mechanism 9 ... sub-eyepiece system, 10 ... sub-observer, 11 ... main magnification operation unit, 12 ... sub-magnification operation unit, 13, 16
… Control unit, 14… Main drum type zooming mechanism, 15… Sub drum type zooming mechanism.

Claims (1)

(57) [Claims] 1. A main variable power mechanism is provided in a main observation / photographing optical path,
In a viewing device having a sub-magnification mechanism provided in a sub-observation optical path formed by dividing the main observation / photographing optical path after the main magnification mechanism, a magnification change by the main magnification mechanism is performed. A viewing device, further comprising a control unit for changing a magnification by the sub-magnification mechanism so as to erase the image.