WO2017111246A1 - Monocular laparoscope for capturing stereoscopic image - Google Patents

Abstract

The present invention relates to a monocular laparoscope for obtaining a stereoscopic image of organs in the body by being inserted into the abdominal cavity, and the monocular laparoscope according to the present invention comprises: a first imaging lens assembly (10); a half mirror (H) for reflecting a portion of light rays which have passed through the first imaging lens assembly (10) while allowing the remaining light rays to pass through; a first camera (30) including a third imaging lens assembly (31) for imaging the light rays which have been reflected by the half mirror (H); and a second camera (40) including a third imaging lens assembly (41) for imaging the light rays which have passed through the half mirror (H). The monocular laparoscope according to the present invention can obtain a stereoscopic image of organs in the body positioned extremely close to the monocular laparoscope.

Description

Monocular laparoscopic for capturing stereoscopic images

This application claims the benefit of priority based on Korean Patent Application No. 10-2015-0186854 dated December 24, 2015, and all content disclosed in the literature of that Korean patent application is incorporated as part of this specification.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monocular laparoscope for photographing stereoscopic images, and to a monocular laparoscope inserted into an abdominal cavity to obtain stereoscopic images of organs.

Laparoscopy is an endoscope used to diagnose or operate organs such as the spleen, colon, stomach, kidney, pancreas, and ovaries with minimal invasion. Compared with the traditional open surgery to incise the abdomen, laparoscopic surgery leaves only a small hole of 0.5 ~ 1.5cm in size, so it has less pain and sequelae due to the wound, and it is favored cosmetically because of the small wound area. .

Laparoscopy, which is currently used in laparoscopic surgery, mostly acquires 2D images of organs in real time and displays them on a display. However, in order to proceed with more precise surgery, it is necessary to accurately check the location of blood vessels and nerves as well as the location of three-dimensional organs, so that a highly stable operation can be demonstrated. To this end, a method of mounting a three-dimensional camera for acquiring a three-dimensional image in a laparoscope may be considered. There are limitations in acquiring three-dimensional images of organs physically located close to the lens due to the characteristics of the laparoscope.

Specifically, a stereoscopic camera acquires a left eye image and a right eye image of a subject simultaneously using two cameras. A typical stereoscopic camera includes a left eye camera that acquires a left eye image of a subject, a right eye camera that acquires a right eye image of a subject, It includes a stereo camera rig that mounts a left eye camera and a right eye camera.

Stereo camera rigs are largely divided into parallel (horizontal) and orthogonal. The parallel stereoscopic camera rig mounts the left eye camera and the right eye camera at a predetermined distance apart from each other so as to be parallel to each other toward the subject, and the left eye camera and the right eye camera receive the light of the subject, respectively, and the difference between these images (hereinafter, referred to as binocular parallax). 'To express the three-dimensional effect.

That is, in order for two cameras to photograph a subject and acquire a stereoscopic image, a minimum distance must be secured between a lens mounted on the two cameras and the subject. This is because there is a separation distance between the lenses mounted on the two cameras. The minimum distance between the lens and the subject should be at least 30 times the distance between the lens midpoints of the two cameras so that the subject is away from the lens. However, the laparoscope is inserted into the abdominal cavity and in most cases cannot maintain the minimum distance from the organ, so the perspective is not secured, so even if the stereoscopic image cannot be obtained or acquired, the stereoscopic feeling is excessively expressed, which gives the viewer extreme fatigue. This inaccurate stereoscopic image adversely affects a doctor undergoing laparoscopic surgery for a long time.

As a result, stereoscopic cameras in which stereoscopic images are separately acquired using two lenses are limited to use as laparoscopes. The present applicant has already proposed a monocular stereoscopic camera capable of obtaining a clear stereoscopic image even when using a single main lens (monocular lens) by improving a stereoscopic camera using two lenses in Korean Patent Publication No. 10-1255803. I've done it.

1 is an internal configuration of a conventional monocular stereoscopic camera presented in the Republic of Korea Patent Publication. Specifically, the monocular stereoscopic camera of FIG. 1 separates the light obtained through the first imaging lens assembly 40 into the left eye camera 60 and the right eye camera 62 through the reflector 46, respectively. Is obtained. That is, it is a monocular stereoscopic camera having one main lens (first imaging lens assembly).

However, in order to apply such a monocular stereoscopic camera as a laparoscope, the following problems must be solved.

(1) It can be applied as a laparoscope only when super close-up photography is secured. (2) The technique to adjust the angle of view according to the magnification / reduction magnification is essential to realize the super close-up stereoscopic image through the laparoscope. The first imaging lens assembly should be easy to be replaced or changed according to the position and the characteristic of the located subject. (4) A technique for realizing a shadowless illumination that irradiates the subject with light inside the abdominal cavity and prevents shadows is added. Should be.

[Prior literature]

Republic of Korea Patent Publication No. 10-1255803 (monocular stereoscopic camera)

The present invention has been proposed to solve the above problems, and an object of the present invention is to provide a monocular laparoscope for capturing stereoscopic images of organs in a super close proximity to the lens in the abdominal cavity.

Still another object of the present invention is to provide a monocular laparoscope capable of adjusting the angle of view according to an enlargement / reduction ratio of a subject, easily replacing and changing the first imaging lens assembly, and realizing a lightless illumination inside the abdominal cavity.

In order to solve the above problems, the monocular laparoscope according to the present invention comprises a first imaging lens assembly (10); A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; In combination with the third imaging lens assemblies 31 and 41, the focal position of the third imaging lens assembly is pulled forward, the virtual image formed on the back of the first imaging lens assembly 10 is enlarged, and chromatic aberration or image curvature is reduced. Second imaging lens assemblies 20, 21, 22; A first camera 30 comprising a third imaging lens assembly 31 for imaging the light rays reflected by the half mirror H; And a second camera 40 including a third imaging lens assembly 41 for forming a light beam passing through the half mirror H. The third imaging lens assembly 31 and 41 may be disposed to be perpendicular to each other, and the third imaging lens assembly 31 and 41 may be formed to have an acute angle of less than 90 ° or an obtuse angle of greater than 90 °. It can be arranged freely.

The second imaging lens assembly 20, 21, 22 is installed between the first imaging lens assembly 10 and the half mirror H, or the half mirror H and the third imaging lens assembly 31 ( 41) can be installed between.

When the third imaging lens assemblies 31 and 41 are macro lenses capable of close-up magnification, a second imaging lens assembly may be selectively provided. That is, when the third imaging lens assembly 31 or 41 is a macro lens having a magnification function such that the virtual image behind the first imaging lens assembly can be sufficiently enlarged and photographed so that there is no vignetting phenomenon. An imaging lens assembly may not be provided.

When the third imaging lens assembly 31 or 41 is a general telephoto lens, the macro imaging lens and the second imaging lens assembly may be combined together to close-up the image passing through the first imaging lens assembly. Play the same role. The magnification at this time is the size of the virtual image formed on the back of the first imaging lens assembly 10, the size of the imaging surfaces 36 and 46 installed on the cameras 30 and 40, and the length of the entire system (first imaging lens assembly). The total length of the optical path from the optical path to the imaging plane).

Monocular laparoscope according to the present invention comprises a first imaging lens assembly (10); A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; At least one of the light reflected by the half mirror H and the light passing through the half mirror H is parallel so that the light reflected by the half mirror H and the light passing through the half mirror H are parallel to each other. A reflecting unit reflecting; A third imaging lens assembly 341 which forms light reflected by the half mirror H; A third imaging lens assembly 331, which forms light passing through the half mirror H, and is installed in parallel with the third imaging lens assembly 341; And expanding the image passing through the first imaging lens assembly 10 and advancing the focal position of the third imaging lens assembly so that the image formed on the rear of the first imaging lens 10 can be finally enlarged and photographed. And a second imaging lens assembly.

The second imaging lens assembly may be installed between the first imaging lens assembly 10 and the half mirror H, or may be installed between the half mirror H and the third imaging lens assembly 341 and 331.

When the third imaging lens assemblies 341 and 331 are macro lenses capable of close-up magnification, the second imaging lens assembly may or may not be provided.

When the third imaging lens assembly 341 and 331 is a general telephoto lens, the third imaging lens assembly 341 and 331 may be combined with the second imaging lens assembly to serve as a macro lens, thereby providing a first imaging lens. Allows final magnification of the image passing through the assembly.

The third imaging lens assemblies 341 and 331 may be installed in the same camera body 350 or may be installed in each camera body.

The monocular laparoscope according to the present invention includes an adapter unit 510 and 610 on which a first imaging lens assembly 10 is mounted and at least a part of which is inserted into the abdominal cavity; Half mirror H; It includes a body portion 520 for mounting the first camera 30 and the second camera 40. In addition, the body portion 520 may further include at least one second imaging lens assembly 20.

The adapter parts 510 and 610 may have an inner barrel 50 on which the first imaging lens assembly 10 is mounted, and a ring shape corresponding to an outer surface of the inner barrel 50 and may transmit light to a subject. 60, the body parts 520 and 620 may include a light supply device 70 for supplying light to the outer barrel 60.

The outer surface of the inner barrel 50 and the inner surface of the outer barrel 60 may be coated with a reflective material for reflecting light.

The monocular laparoscope according to the present invention has the following effects.

First, a stereoscopic image of a subject in a super near position with the first imaging lens assembly may be photographed.

Second, it is possible to precisely adjust the angle of view according to the magnification of the subject in the hyper-close position.

Third, it is possible to easily detach the first imaging lens assembly from the body portion, so that the first imaging lens assembly can be easily changed and selected.

Fourth, it is possible to obtain a clear three-dimensional image by imparting the function of the unilluminated light to prevent the shadow in the lighting system essential for the laparoscope.

1 is a block diagram of a conventional monocular stereoscopic camera.

2 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the first embodiment of the present invention.

3 to 5 are schematic views for explaining the role of the second imaging lens assembly provided in the present invention.

6 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the second embodiment of the present invention.

7 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the third embodiment of the present invention.

8 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the fourth embodiment of the present invention.

9 is a cross-sectional view of the monocular laparoscope according to the fifth embodiment of the present invention equipped with the optical configuration shown in FIG. 2.

10 is a cross-sectional view of the monocular laparoscope according to the sixth embodiment of the present invention equipped with the optical configuration shown in FIG.

[Description of major symbols in drawings]

10: first imaging lens assembly 20, 21, 22: second imaging lens assembly

30: first camera 40: second camera

31 and 41: third imaging lens assembly 35 and 45: camera body

50: inner barrel 60: outer barrel

70: light supply

100, 200, 300, 400, 500, 600: monocular laparoscopic

510, 610: adapter portion 520, 620: body portion

H: half mirror

M: protrusion

 N: home

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the common or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention. Accordingly, it is to be understood that the embodiments shown in the specification and the drawings shown in the drawings are only embodiments of the present invention, and there may be various equivalents and modifications that may substitute them at the time of the present application.

The monocular laparoscope inserted into the abdominal cavity according to the present invention for capturing stereoscopic images may include the first imaging lens assembly 10, the half mirror H, the first camera 30, and 2 camera 40 is included. The optical structure mounted inside the monocular laparoscope of the present invention will be described first, and then the mechanical configuration will be described.

The 'imaging lens assembly' described below includes an aggregate in which one or two or more lenses are combined.

(1) First embodiment

2 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the first embodiment of the present invention.

Referring to FIG. 2, the monocular laparoscope 100 is a monocular orthogonal league, which may be installed so that the first camera 30 and the second camera 40 are perpendicular to each other, and the first camera 30 The second camera 40 may be freely installed to form an acute angle of less than 90 ° or an obtuse angle of greater than 90 °.

In detail, the stereoscopic camera 100 includes a first imaging lens assembly 10, a second imaging lens assembly 20 installed at the rear of the first imaging lens assembly 10, a half mirror H, and a half mirror. The 1st camera 30 provided on the optical axis reflected by (H), and the 2nd camera 40 provided on the optical axis which passed through the half mirror H are included.

The first imaging lens assembly 10 converges the light incident from the subject 8. The first imaging lens assembly 10 may be installed to be interchangeable, and a suitable lens may be selected and installed in consideration of the photographing purpose, the type of the subject, the distance to the subject, and the like.

The monocular laparoscope 100 according to the present invention may further include a second imaging lens assembly 20. The second imaging lens assembly 20 may be additionally mounted in combination with the third imaging lens assembly 31 and 41 to close a focus position and to reduce chromatic aberration and image curvature. In addition, the sub-focus is installed to move back and forth on the optical axis connecting the half mirror H and the first imaging lens assembly 10 so that the subject can focus on a subject beyond the focal range of the first imaging lens assembly 10 during shooting. Can act as a moderator In this case, when the position of the main subject is close to the focal adjustment range of the first imaging lens assembly 10, the second imaging lens assembly 20 is moved in the direction of the third imaging lens assemblies 31 and 41 to be in close proximity. The second imaging lens assembly 20 may move in the direction of the first imaging lens assembly 10 when the subject may be focused and the main subject is far away from the focus adjustment range of the first imaging lens assembly 10. This allows you to focus on a distant subject out of focus.

The second imaging lens assembly 20 is a stereoscopic image of organs, blood vessels, nerves, and the like, which are partially invaded into the abdominal cavity by the monocular laparoscope 100 of the present invention and are present in the super near position with the first imaging lens assembly 10. To shoot. In addition, the second imaging lens assembly 20 enables to precisely adjust the angle of view according to the magnification by enlarging and reducing the subject beyond the focal limit of the first imaging lens assembly 10. Herein, the super close position indicates that the distance between the first imaging lens assembly 10 and the subject is less than 10 cm, and the monocular laparoscope 100 of the present invention can acquire a stereoscopic image even in an environment where the super close position is less than 1 cm. .

The first camera 30 includes a third imaging lens assembly 31 and a camera body 35. The second camera 40 includes a third imaging lens assembly 41 and a camera body 45. Imaging surfaces 36 and 46 are provided inside the camera bodies 35 and 45, respectively.

The third imaging lens assembly 31 forms light reflected by the half mirror H, and the third imaging lens assembly 41 forms light passing through the half mirror H.

The third imaging lens assembly 31 and 41 may be a base lens, and a macro lens capable of close-up magnification may be used. When the magnification is sufficient using a macro lens for the third imaging lens assemblies 31 and 41, the second imaging lens assembly 20 may be excluded. When the third imaging lens assembly 31 or 41 is used as a macro lens, a stereoscopic image of an organ or the like existing in the super close-up position with the first imaging lens 10 may be photographed, and the first imaging lens assembly 10 may be photographed. You can precisely adjust the angle of view according to the magnification by enlarging or reducing the subject located beyond the focus limit of.

When a telephoto lens is used for the third imaging lens assembly 31 and 41, the third imaging lens assembly 31 and 41 may be combined with the second imaging lens assembly 20 to serve as a macro lens. Done. By using this combination, the monocular laparoscope of the present invention can acquire stereoscopic images of fine blood vessels, muscles, nerves, and the like.

In order to enable various lenses to be used as the first imaging lens assembly 10, a virtual image formed at the rear of the first imaging lens assembly 10 may be used as the second imaging lens assembly 20 and the third imaging lens assembly 31. It is preferable that the photographing is enlarged using (41).

To this end, when there is a limit in adjusting the distance between the imaging surface 36 and the third imaging lens assembly 31 and the distance between the imaging surface 46 and the third imaging lens assembly 41, the third imaging lens assembly ( 31) (41) by using a telephoto-based lens and the second imaging lens assembly 20 together to enable close-up photography to enlarge the image of the first imaging lens assembly 10, or the third imaging lens Using the lens of the macro series (lens capable of close-up magnification) as the assembly 31, 41, and further using the second imaging lens assembly 20 to bring the focus position closer to the second imaging lens assembly ( By having 20) have a function of correcting chromatic aberration and image curvature, the virtual image made behind the first imaging lens assembly 10 can be enlarged and photographed.

In particular, when the size of the camera imaging surfaces 36 and 46 is larger than the size of the image 9 of the virtual first focal plane made by the first imaging lens assembly 10, the third imaging lens assembly 31 and 41 is formed. By using a macro lens capable of close-up magnification, a so-called vignetting phenomenon in which the peripheral portion of the image is blurred black due to a decrease in the amount of light around the camera lens can be reduced, and the choice of the first imaging lens assembly 10 can be expanded. have.

In addition, by using a macro lens capable of close-up magnification as the third imaging lens assembly 31 (41), the camera imaging surface 36 is provided from the first imaging lens assembly 10 as compared with the case of using a telephoto lens. It is possible to reduce the size of the monocular laparoscope up to (46).

On the other hand, in order to achieve the above effect, a higher magnification (lens with a short focal length of the lens) may be used for the second imaging lens assembly 20, but a method of increasing the magnification of the second imaging lens assembly 20 may be used. By using a lens capable of close-up magnification for the third imaging lens assemblies 31 and 41, a result with less distortion and higher image quality can be obtained.

Meanwhile, the monocular laparoscope according to the present invention may further include apertures 32 and 42.

The apertures 32 and 42 may be installed in the third imaging lens assembly 31 and 41, respectively, and may not be installed in the first imaging lens assembly 10. Even when the aperture-mounted lens is used as the first imaging lens assembly 10, the aperture provided in the first imaging lens assembly 10 is photographed in an open state. The apertures 32 and 42 of the third imaging lens assembly 31 and 41 prevent vignetting.

On the other hand, as described above, in the present invention, when the magnification is sufficient by using a macro lens for the third imaging lens assembly 31 and 41, the second imaging lens assembly 20 may be excluded and the third imaging lens may be excluded. When telephoto-based lenses are used in the assemblies 31 and 41, the third imaging lens assembly 31 and 41 and the second imaging lens assembly 20 are combined to serve as macro lenses. In this regard, the function of the second imaging lens assembly 20 will be described with reference to FIGS. 3 to 5.

3 to 5 illustrate a case in which the half mirror H and the first camera 30 are not provided, for example, to specifically describe a difference between when the second imaging lens assembly 20 is installed and when it is not installed. Internal configuration diagram.

3 illustrates a case where the second imaging lens assembly 20 is installed, and FIG. 4 illustrates a case where the second imaging lens assembly 20 is not installed. The second imaging lens assembly 20 serves to pull the focal position of the third imaging lens assembly 41 forward, that is, to move the focal position of the third imaging lens assembly 41 to the right side of the drawing. It is possible to reduce the length (the length from the first imaging lens assembly 10 to the imaging surface 46) (so that the position of the first imaging lens assembly can be moved to the right side of the drawing).

In other words, since the focal position of the third imaging lens assembly 41 should be the position of the virtual image 9 of the first imaging lens assembly 10, a lens (eg, a macro that is manufactured to allow close-up photography) may be used. Lens) as the third imaging lens assembly 41, or when using a general telephoto lens (a lens having a general focusing position value), the third imaging lens assembly 20 is used together. The effect of advancing the focal position of the lens assembly 41 can be brought.

In the case of FIG. 3, if a normal image comes out, in FIG. 4, a normal image is not formed because the focal position of the third imaging lens assembly 41 and the position of the virtual image 9 of the first imaging lens assembly 10 do not match. Do not. In this case, as shown in FIG. 5, the position of the first imaging lens assembly 10 should be located farther from the third imaging lens assembly 41. In this case, the peripheral portion of the image is blackened due to the decrease in the amount of light around the camera lens. There is a problem that the so-called vignetting phenomenon is blurred.

(2) Second Embodiment

6 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the second embodiment of the present invention.

Since the monocular laparoscope according to the second embodiment of the present invention described below uses the same name for the same configuration as the monocular laparoscope described in the first embodiment, all except the arrangement relationship should be interpreted as having the same meaning. .

Referring to FIG. 6, the monocular laparoscope 200 is a monocular orthogonal league, which may be installed such that the first camera 30 and the second camera 40 are perpendicular to each other, and the first camera 30. The second camera 40 may be freely installed to form an acute angle of less than 90 ° or an obtuse angle of greater than 90 °.

In detail, the stereoscopic camera 200 includes the first imaging lens assembly 10, the second imaging lens assembly 21 and 22 installed at the rear of the first imaging lens assembly 10, the half mirror H, And a first camera 30 provided on the optical axis reflected by the half mirror H, and a second camera 40 provided on the optical axis passing through the half mirror H.

Looking at the difference between the monocular laparoscope 200 according to the second embodiment and the monocular laparoscope 100 according to the first embodiment, the second imaging lens assembly 21, 22 is a half mirror (H) and the third There is a difference in the points disposed between the imaging lens assemblies 31 and 41, respectively. Therefore, in the monocular laparoscope 200 according to the second embodiment, the light reflected by the half mirror H passes through the second imaging lens assembly 21 and then enters the third imaging lens assembly 31. The light passing through the half mirror H is incident on the third imaging lens assembly 41 after passing through the second imaging lens assembly 22.

On the other hand, in the second embodiment, that a macro lens or a telephoto lens may be used for the third imaging lens assembly 31, 41, or a macro lens is used for the third imaging lens assembly 31, 41. The second imaging lens assembly (21, 22) can be excluded, the third imaging lens assembly (31) (41) when the telephoto lens is used in the third imaging lens assembly (31) (41) And the second imaging lens assembly 21, 22 may be combined to close the focal position, and the like, as described in the monocular laparoscope 100 of the first embodiment.

However, the monocular laparoscope 200 of the second embodiment, unlike the monocular laparoscope 100 of the first embodiment, does not have a device for moving the second imaging lens assembly 21, 22 from time to time along the optical axis. This is preferable because the time loss required to individually adjust the focus of both the left and right eyes is greater than the gain due to the expansion of the focal range obtained by moving the second imaging lens assembly 21, 22 from time to time.

(3) Third embodiment

7 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the third embodiment of the present invention.

Since the monocular laparoscope according to the third embodiment of the present invention described below uses the same name for the same configuration as the monocular laparoscope described in the first embodiment, all except the arrangement relationship should be interpreted as having the same meaning. .

Referring to FIG. 7, the monocular laparoscope 300 according to the third embodiment is a monocular horizontal rig, and has a half mirror H installed at the rear of the first imaging lens assembly 10 and the first imaging lens assembly 10. ), Reflectors 361, 363, 365, and second imaging lens assemblies 21, 22.

The reflection parts 361, 363, 365 are the light reflected by the half mirror H and the half mirror H so that the light reflected by the half mirror H and the light passing through the half mirror H are parallel to each other. Reflect at least one of the light passing through).

FIG. 7 illustrates an example of the reflector, wherein the reflectors 361, 363 and 365 reflect the light passing through the half mirror H toward the third imaging lens assembly 331. ) And a reflector 361 reflecting the light reflected by the half mirror H toward the third imaging lens assembly 341. The reflector 361, 363, 365 is not particularly limited as long as it can reflect the light to change the optical axis, but may include, for example, a mirror.

The monocular laparoscope 300 according to the third embodiment of FIG. 7 is a monocular horizontal league, which illustrates a case where the light reflected by the half mirror H and the light passing through the half mirror H are parallel to each other. However, the monocular laparoscope according to the present invention adjusts the angles of the half mirror H and the reflector so that the optical axes are not parallel to each other, so that the second imaging lens assembly 21, 22 and the third imaging lens assembly ( 331 and 341 can be arranged freely so that they are not parallel to each other.

In the third embodiment, a part of the light passing through the first imaging lens assembly 10 passes through the half mirror H and is reflected by the reflecting parts 363 and 365 to the second imaging lens assembly 21. The remaining light, which has passed through the first imaging lens assembly 10, is sequentially reflected by the half mirror H and the reflector 361, and then enters the second imaging lens assembly 22.

Light passing through the second imaging lens assembly 21 is incident on the third imaging lens assembly 331, and light passing through the second imaging lens assembly 22 is incident on the third imaging lens assembly 341.

The use of a macro lens or a telephoto lens may be used for the third imaging lens assembly 331, 341, or the second imaging lens assembly 21 when the macro lens is used for the third imaging lens assembly 331, 341. 3), the third imaging lens assembly 331 (341) and the second imaging lens assembly (21) when the telephoto lens is used for the third imaging lens assembly (331, 341). ) 22 may be combined to approximate the focal position, and the same as the monocular laparoscope 100 of the first embodiment described above.

On the other hand, in the figure is an integrated binocular, but may be composed of two cameras, which will be apparent to those skilled in the art with reference to the present specification.

(4) Fourth Embodiment

8 is an internal configuration diagram showing an optical configuration mounted on the monocular laparoscope according to the fourth embodiment of the present invention.

Since the monocular laparoscope according to the fourth embodiment of the present invention described below uses the same name for the same configuration as the monocular laparoscope described in the third embodiment, all except the arrangement relationship should be interpreted as having the same meaning. .

Referring to FIG. 8, the monocular laparoscope 400 according to the fourth embodiment is the monocular laparoscope 300 of the third embodiment except that the second imaging lens assembly 20 is installed in front of the half mirror H. Same as). Accordingly, some of the light passing through the first imaging lens assembly 10 is reflected by the half mirror H and the mirror 361, and then enters the third imaging lens assembly 341, and the first imaging lens assembly 10 is applied. The remaining light passes through the half mirror H and is reflected by the reflecting parts 363 and 365 to be incident on the third imaging lens assembly 331.

The monocular laparoscope 400 according to the fourth embodiment of FIG. 8 is a monocular horizontal league, and illustrates the case where the light reflected by the half mirror H and the light passing through the half mirror H are parallel to each other. However, the monocular laparoscope according to the present invention is freely arranged so that the third imaging lens assemblies 331 and 341 are not parallel to each other by adjusting the angles of the half mirror H and the reflector so that the optical axes are not parallel to each other. can do.

In addition, a macro lens or a telephoto lens may be used in the third imaging lens assembly 331 and 341. When the macro lens is used in the third imaging lens assembly 331 and 341, the second imaging lens assembly ( 20, the third imaging lens assembly 331 (341) and the second imaging lens assembly 20, when the telephoto lens is used in the third imaging lens assembly (331, 341) The combination and the like may bring the focus position closer to that described in the monocular laparoscope 100 of the first embodiment.

The monocular laparoscope 400 of the present invention may be a binocular stereoscopic camera (ie, an integrated binocular stereoscopic camera or two cameras) or a horizontal rig.

(5) Fifth Embodiment

Hereinafter, the mechanical configuration of the monocular laparoscope equipped with the optical structure described above will be described as a specific embodiment.

9 is a cross-sectional view of the monocular laparoscope according to the fifth embodiment of the present invention equipped with the optical configuration shown in FIG. 2.

9, the monocular laparoscope 500 according to the fifth embodiment of the present invention includes an adapter portion 510 and a body portion 520. At least a portion of the adapter 510 is inserted into the abdominal cavity to receive light. The adapter unit 510 includes an inner barrel 50 on which the first imaging lens assembly 10 is mounted, and an outer barrel 60 for transmitting light. The first imaging lens assembly 10 converges the light incident from the subject. The first imaging lens assembly 10 may be mounted at one end of the inner barrel 50 so as to converge the light of the subject. The diameter of the inner barrel 50 may be variously changed according to the diameter of the first imaging lens assembly 10, but may preferably have a diameter of less than 20 mm to leave a minimum wound after laparoscopic surgery. The length of the first imaging lens assembly 10 has less than 1/2 of the total length of the inner barrel 50. In addition, in the case of a general imaging lens, a plurality of relay lenses are required to deliver an image formed on a rear surface, whereas in the case of the first imaging lens assembly 10 of the present invention, a relay lens transferring an image formed on a rear surface is provided. The number of can be reduced.

The outer barrel 60 may have a ring shape corresponding to the outer surface of the inner barrel 50. The outer barrel 60 is spaced apart from the inner barrel 50, and the light is transmitted between the outer barrel 60 and the inner barrel 50 to supply the illumination required for laparoscopic surgery. For example, the inner surface of the outer barrel 60 and the outer surface of the inner barrel 50 include known metal materials, alloys, plastics, and mixtures thereof that reflect light.

The body 520 may include a half mirror H, a first camera 30, and a second camera 40, and an adapter 510 may be detachably attached to one side of the body 520. have. For example, a protrusion M is formed on an outer surface of the outer barrel 60 constituting the adapter part 510, and a groove N in which the protrusion M is inserted and fixed is formed in the body part 520. Can be. In this embodiment, the configuration in which the adapter portion 510 can be detachably attached to the body portion 520 by using the protrusion M and the groove N is described, but it is obvious that it can be changed using a known detachable configuration. will be.

On the other hand, the body portion 520 may include a light supply device 70 for supplying light between the outer barrel 60 and the inner barrel 50. For example, the light supply device 70 may be a light emitting diode (LED) chip, but is not limited thereto. The light supply device 70 may be disposed at a position as shown in FIG. 9 to supply light between the outer barrel 60 and the inner barrel 50. In this case, when the adapter unit 510 is viewed from the left side, light of a circular shape may be irradiated onto the subject. When light is irradiated with circular illumination, shadows that may be caused by surgical tools invaded into the abdominal cavity are minimized to facilitate the acquisition of a stereoscopic image.

Although FIG. 9 illustrates that the light supply device 70 is disposed on the body portion 520, the light supply device is disposed outside the monocular laparoscope 500 to light the outer barrel 60 through the light transmission path. This can be investigated. For example, the light transmission path may include an optical fiber cable filled with glass fibers. When the light supply device 70 is disposed outside the monocular laparoscope 100 and irradiated with light, the light supply device 70 is disposed on the body 520 as shown in FIG. 9 to generate the light supply device. Heat may be transferred to the outer barrel 60 to prevent the possibility of damaging organs or skin tissue in the abdominal cavity.

In addition, in FIG. 9, the first imaging lens assembly 10 is mounted at one end of the inner barrel 50 so that the inner barrel 50 and the outer barrel 60 are separated from each other at one end. The length of the 50 may be shorter than the length of the outer barrel 60 so that the first imaging lens assembly 10 may be mounted at one end of the outer barrel 60. That is, the aperture of the first imaging lens assembly 10 may be adjusted within a range of 1% to 100% of the entire diameter of the outer barrel 60.

The optical structure of the monocular laparoscope 500 according to the fifth embodiment described above is the same as that described in the first embodiment.

(6) Sixth Embodiment

10 is a cross-sectional view of the monocular laparoscope according to the sixth embodiment of the present invention equipped with the optical configuration shown in FIG.

Referring to FIG. 10, in the monocular laparoscope 600 according to the sixth embodiment, the second imaging lens assembly 21, 22 of the monocular laparoscope 500 according to the fifth embodiment is connected to the half mirror H. Except for being disposed between the third imaging lens assembly (31) (41), it has the same configuration.

As described above, the monocular laparoscope according to the present invention is capable of (1) taking a three-dimensional image of the subject in the super near position with the first imaging lens assembly, and (2) the magnification of the subject in the super near position. The angle of view can be precisely adjusted, and (3) the adapter portion on which the first imaging lens assembly is mounted can be easily attached and detached from the body portion, thereby widening the range of modification and selective use of the first imaging lens assembly, (4) In the illumination of the laparoscope, it is possible to impart a function of a non-illuminated light that prevents the occurrence of shadows, so that stereoscopic image acquisition is easy.

Claims (9)

A first imaging lens assembly 10; A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; A first camera 30 comprising a third imaging lens assembly 31 for imaging the light rays reflected by the half mirror H; And And a second camera 40 including a third imaging lens assembly 41 for forming a light beam passing through the half mirror H. The third imaging lens assembly 31 and 41 are disposed to be perpendicular to each other. In the monocular laparoscope for stereoscopic image capturing, the third imaging lens assembly 31 or 41 is a lens capable of close-up magnification. The laparoscope is An adapter part (510, 610) on which the first imaging lens assembly (10) is mounted and at least a part thereof is inserted into the abdominal cavity; And Body parts 520 and 620 for mounting the half mirror H, the first camera 30 and the second camera 40, The adapter parts 510 and 610 may include an inner barrel 50 on which the first imaging lens assembly 10 is mounted; And an outer barrel 60 spaced apart from the inner barrel 50 and having a ring shape corresponding to the outer surface of the inner barrel 50 to transmit light to the subject. The body portion 520, 620 is a monocular laparoscopic for stereoscopic image shooting, characterized in that it comprises a light supply device for supplying light to the outer barrel 60. A first imaging lens assembly 10; A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; A first camera 30 comprising a third imaging lens assembly 31 for imaging the light rays reflected by the half mirror H; A second camera 40 including a third imaging lens assembly 41 for forming a light beam passing through the half mirror H; And And a second imaging lens assembly combined with the third imaging lens assemblies 31 and 41 to change the focal position of the third imaging lens assembly to be close to and reduce chromatic aberration and image curvature of the final image. The third imaging lens assembly 31 and 41 are disposed to be perpendicular to each other. The third imaging lens assembly 31 and 41 are lenses capable of close-up magnification. The second imaging lens assembly is installed between the first imaging lens assembly 10 and the half mirror (H) or three-dimensional, characterized in that installed between the half mirror (H) and the third imaging lens assembly (31, 41). In monocular laparoscopic for image shooting, The laparoscope is An adapter part (510, 610) on which the first imaging lens assembly (10) is mounted and at least a part thereof is inserted into the abdominal cavity; And Body parts 520 and 620 for mounting the half mirror H, the first camera 30 and the second camera 40, The adapter parts 510 and 610 may include an inner barrel 50 on which the first imaging lens assembly 10 is mounted; And an outer barrel 60 spaced apart from the inner barrel 50 and having a ring shape corresponding to the outer surface of the inner barrel 50 to transmit light to the subject. The body portion 520, 620 is a monocular laparoscopic for stereoscopic image shooting, characterized in that it comprises a light supply device for supplying light to the outer barrel 60. A first imaging lens assembly 10; A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; A second imaging lens assembly; A first camera 30 comprising a third imaging lens assembly 31 for imaging the light rays reflected by the half mirror H; And And a second camera 40 including a third imaging lens assembly 41 for forming a light beam passing through the half mirror H. The second imaging lens assembly is installed between the first imaging lens assembly 10 and the half mirror H or is installed between the half mirror H and the third imaging lens assembly 31 and 41, The second imaging lens assembly is combined with the third imaging lens assembly 31 and 41 to change the focal position of the third imaging lens assembly to be close and to reduce chromatic aberration and image curvature of the final image. The third imaging lens assembly 31 and 41 are disposed to be perpendicular to each other. In the third imaging lens assembly (31) (41) is a telephoto lens and combined with the second imaging lens assembly to serve as a macro lens capable of close-up magnification, in the monocular laparoscopic for stereoscopic imaging, The laparoscope is An adapter part (510, 610) on which the first imaging lens assembly (10) is mounted and at least a part thereof is inserted into the abdominal cavity; And Body parts 520 and 620 for mounting the half mirror H, the first camera 30 and the second camera 40, The adapter parts 510 and 610 may include an inner barrel 50 on which the first imaging lens assembly 10 is mounted; And an outer barrel 60 spaced apart from the inner barrel 50 and having a ring shape corresponding to the outer surface of the inner barrel 50 to transmit light to the subject. The body portion 520, 620 is a monocular laparoscopic for stereoscopic image shooting, characterized in that it comprises a light supply device for supplying light to the outer barrel 60. A first imaging lens assembly 10; A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; At least one of the light reflected by the half mirror H and the light passing through the half mirror H is parallel so that the light reflected by the half mirror H and the light passing through the half mirror H are parallel to each other. A reflecting unit reflecting; A third imaging lens assembly 341 which forms light reflected by the half mirror H; And And a third imaging lens assembly 331, which forms light passing through the half mirror H, and is installed in parallel with the third imaging lens assembly 341. The third imaging lens assembly 341 and 331 may be installed in the same camera body 350 or may be installed in each camera body. In the three-dimensional imaging lens assembly (341, 331) is a macro lens capable of close-up magnification in the monocular laparoscope for stereoscopic imaging, The laparoscope is An adapter part (510, 610) on which the first imaging lens assembly (10) is mounted and at least a part thereof is inserted into the abdominal cavity; And Body parts 520 and 620 for mounting the half mirror H and the camera body 350, The adapter parts 510 and 610 may include an inner barrel 50 on which the first imaging lens assembly 10 is mounted; And an outer barrel 60 spaced apart from the inner barrel 50 and having a ring shape corresponding to the outer surface of the inner barrel 50 to transmit light to the subject. The body portion 520, 620 is a monocular laparoscopic for stereoscopic image shooting, characterized in that it comprises a light supply device for supplying light to the outer barrel 60. A first imaging lens assembly 10; A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; At least one of the light reflected by the half mirror H and the light passing through the half mirror H is parallel so that the light reflected by the half mirror H and the light passing through the half mirror H are parallel to each other. A reflecting unit reflecting; A third imaging lens assembly 341 which forms light reflected by the half mirror H; A third imaging lens assembly 331, which forms light passing through the half mirror H, and is installed in parallel with the third imaging lens assembly 341; And And a second imaging lens assembly combined with the third imaging lens assemblies 331 and 341 to change the focal position of the third imaging lens assembly to be close to and reduce chromatic aberration and image curvature of the final image. The third imaging lens assembly 341 and 331 may be installed in the same camera body 350 or may be installed in each camera body. The third imaging lens assembly 341 and 331 are macro lenses capable of close-up magnification. The second imaging lens assembly may be installed between the first imaging lens assembly 10 and the half mirror H or between the half mirror H and the third imaging lens assembly 341 and 331. In monocular laparoscopic for image shooting, The laparoscope is An adapter part (510, 610) on which the first imaging lens assembly (10) is mounted and at least a part thereof is inserted into the abdominal cavity; And Body parts 520 and 620 for mounting the half mirror H and the camera body 350, The adapter parts 510 and 610 may include an inner barrel 50 on which the first imaging lens assembly 10 is mounted; And an outer barrel 60 spaced apart from the inner barrel 50 and having a ring shape corresponding to the outer surface of the inner barrel 50 to transmit light to the subject. The body portion 520, 620 is a monocular laparoscopic for stereoscopic image shooting, characterized in that it comprises a light supply device for supplying light to the outer barrel 60. A first imaging lens assembly 10; A half mirror (H) for reflecting some of the light rays passing through the first imaging lens assembly (10) and passing the remaining light rays; At least one of the light reflected by the half mirror H and the light passing through the half mirror H is parallel so that the light reflected by the half mirror H and the light passing through the half mirror H are parallel to each other. A reflecting unit reflecting; A second imaging lens assembly; A third imaging lens assembly 341 which forms light reflected by the half mirror H; And And a third imaging lens assembly 331, which forms light passing through the half mirror H, and is installed in parallel with the third imaging lens assembly 341. The second imaging lens assembly is installed between the first imaging lens assembly 10 and the half mirror H or between the half mirror H and the third imaging lens assembly 341 and 331, The second imaging lens assembly is combined with the third imaging lens assembly 341 and 331 to change the focal position of the third imaging lens assembly 341 and 331 to approximate and reduce chromatic aberration and image curvature of the final image. The third imaging lens assembly 341 and 331 may be installed in the same camera body 350 or may be installed in each camera body. In the third imaging lens assembly (341, 331) is a telephoto-type lens and combined with the second imaging lens assembly to serve as a macro lens capable of close-up magnification, in the monocular laparoscope for stereoscopic imaging, The laparoscope is An adapter part (510, 610) on which the first imaging lens assembly (10) is mounted and at least a part thereof is inserted into the abdominal cavity; And Body parts 520 and 620 for mounting the half mirror H and the camera body 350, The adapter parts 510 and 610 may include an inner barrel 50 on which the first imaging lens assembly 10 is mounted; And an outer barrel 60 spaced apart from the inner barrel 50 and having a ring shape corresponding to the outer surface of the inner barrel 50 to transmit light to the subject. The body portion 520, 620 is a monocular laparoscopic for stereoscopic image shooting, characterized in that it comprises a light supply device for supplying light to the outer barrel 60. The method according to any one of claims 1 to 6, Monocular laparoscopic for stereoscopic image shooting, characterized in that the focal length of the third imaging lens assembly (31) (41) (341) (331) is 20mm or more. The method according to any one of claims 1 to 6, The adapter unit 510, 610 is a monocular laparoscope for stereoscopic image shooting, characterized in that detachable to the body portion (520, 620). The method according to any one of claims 1 to 6, The outer surface of the inner barrel 50 and the inner surface of the outer barrel 60 is a monocular laparoscope for stereoscopic imaging, characterized in that it comprises a reflecting material for reflecting light.

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