CN116256888A - 3D optical endoscope system capable of focusing - Google Patents
3D optical endoscope system capable of focusing Download PDFInfo
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- CN116256888A CN116256888A CN202111511083.7A CN202111511083A CN116256888A CN 116256888 A CN116256888 A CN 116256888A CN 202111511083 A CN202111511083 A CN 202111511083A CN 116256888 A CN116256888 A CN 116256888A
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- 238000002324 minimally invasive surgery Methods 0.000 description 4
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2407—Optical details
- G02B23/2423—Optical details of the distal end
- G02B23/243—Objectives for endoscopes
- G02B23/2438—Zoom objectives
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
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- A—HUMAN NECESSITIES
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- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00011—Operational features of endoscopes characterised by signal transmission
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
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- A—HUMAN NECESSITIES
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- A61B1/00163—Optical arrangements
- A61B1/00188—Optical arrangements with focusing or zooming features
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- A—HUMAN NECESSITIES
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- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
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- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/042—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by a proximal camera, e.g. a CCD camera
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/055—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances having rod-lens arrangements
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
- G02B23/2484—Arrangements in relation to a camera or imaging device
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Abstract
The invention relates to the technical field of 3D imaging and medical equipment, and discloses a 3D optical endoscope capable of focusing, which comprises a lens tube, a double-optical-path imaging lens group, a double-telecentric relay lens group and an imaging sensor, wherein the double-optical-path imaging lens group is arranged in the lens tube and used for binocular image acquisition, the double-telecentric relay lens group is used for combining double optical paths into a single optical path, and the imaging sensor is used for receiving images transmitted by the double-telecentric relay lens group; the 3D optical endoscope with adjustable focusing further comprises a focusing assembly connected with the double telecentric relay lens group. According to the 3D optical endoscope capable of focusing, provided by the invention, the double light paths are combined into a single light path through the double telecentric relay system, so that the high-quality transmission of images is ensured, meanwhile, the structure of a rear end system is simplified, and high-definition imaging at different imaging distances is realized through the focusing structure.
Description
Technical Field
The embodiment of the invention relates to the technical field of 3D imaging and medical instruments, in particular to a 3D optical endoscope system capable of focusing.
Background
In recent years, the popularization and popularization of minimally invasive surgery technology in the global scope promotes the development of minimally invasive medical instruments, and the minimally invasive medical instruments of an endoscope are the most representative. As minimally invasive surgery is increasingly applied to clinic, the complexity and diversity of the operation are more and more prominent, and the minimally invasive surgery is also gradually becoming a main problem for restricting the further improvement and development of the minimally invasive surgery. In order for a doctor to obtain real 3D image information in a patient outside the patient, a 3D endoscope was developed.
The endoscope can be divided into an optical lens and an electronic lens according to an imaging mode, the optical lens is used for imaging through an objective lens at the front end of the endoscope, then the image is transmitted to a CCD/CMOS at the tail end of the endoscope through a Hopkins rod-shaped lens, the optical lens can ensure high-quality transmission of the image, and the minimum resolution loss is realized, so that most 2D hard tube endoscopes at present adopt the optical lens. The electronic mirror is arranged at the front end of the endoscope, and the CCD/CMOS converts the image formed by the front end objective lens into an electric signal to be transmitted to the rear end processor, so that the electronic mirror is mostly used for a soft endoscope. Since the endoscope body diameter is small, typically between five and tens of millimeters, the electronic mirror requires a small CCD/CMOS size. In the case where the CCD/CMOS size cannot be made smaller, the CCD/CMOS may also be placed at the rear end of the mirror body where the image is transferred to the two CCDs/CMOS by the light guide, but this approach may cause a defect in image quality.
For a 3D endoscope, two images of the same object at different viewing angles need to be obtained, and then the two images are fused into a 3D image through image processing. The 3D endoscope can be also divided into an electronic mirror and an optical mirror, the 3D electronic mirror utilizes two prepositioned CCD/CMOS to collect images at the same time, and compared with a 2D electronic mirror which only needs one CCD/CMOS, the 3D electronic mirror has higher requirements on the size and the precision of the CCD/CMOS, although the chip size with the same precision can be smaller along with the progress of chip technology at present, the high resolution of the optical endoscope still cannot be achieved, and the customization cost of a chip with high precision and small size is very high. In addition, the preposed CCD/CMOS can generate heat in long-time working, and has higher requirements on heat dissipation treatment of the system in order to avoid burning human bodies.
The 3D optical lens adopts two single-light path systems to image the target at the same time, then receives images through a back-end CCD/CMOS, and finally processes the images into a 3D image to be displayed through an image fusion technology. Current 3D optical endoscope designs generally employ dual-path imaging, where the back end splits the light through a prism or other optical element, and the two sets of images are transferred to one or more CCDs/CMOS respectively. The design leads to the complex structure of the rear end due to the introduction of the light splitting system, increases the volume and the weight of the operating handle and brings inconvenience to clinical operation and use of medical staff. In addition, the current 3D optical lens does not have a focusing function, has a simple image amplifying function, and cannot be adjusted according to the change of image definition at different imaging distances.
Disclosure of Invention
The embodiment of the invention aims to at least overcome one of the defects in the prior art, and provides a 3D optical endoscope capable of focusing, which combines double light paths into a single light path through a double telecentric relay system, ensures high-quality transmission of images, simplifies a rear-end system structure, and realizes high-definition imaging at different imaging distances through a focusing structure.
The embodiment of the invention provides a 3D optical endoscope capable of focusing, which comprises a lens tube, a double-optical-path imaging lens group, a double-telecentric relay lens group and an imaging sensor, wherein the double-optical-path imaging lens group is arranged in the lens tube and used for binocular image acquisition, the double-telecentric relay lens group is used for combining double optical paths into a single optical path, and the imaging sensor is used for receiving images transmitted by the double-telecentric relay lens group; the 3D optical endoscope with adjustable focusing further comprises a focusing assembly connected with the double telecentric relay lens group.
In one possible implementation, the focusing assembly has a cam structure for controlling the active displacement of the double telecentric relay lens set and for focusing.
In one possible solution, the dual-optical-path imaging lens group includes two optical path systems disposed in parallel in the lens tube.
In one possible solution, the head of the optical path system has an imaging objective lens group, and the tail of the optical path system has a Hopkins rod lens optical system for image transfer.
In one possible approach, the imaging sensor has a single area array, and the imaging sensor includes a CCD/CMOS detector for simultaneously receiving two images delivered by the double telecentric relay system at the area array.
In one possible solution, the double telecentric relay lens group has a double telecentric optical system; the object planes of the double telecentric optical system are the common image planes of the two optical path systems; the image plane of the double telecentric optical system is the focal plane of the CCD/CMOS detector.
In one possible solution, the 3D optical endoscope includes a movable moving barrel, and the double telecentric relay lens group is fixedly connected in the moving barrel.
In one possible scheme, the cam structure comprises a handle lens barrel sleeved on the moving lens barrel, a rotary hand wheel arranged on the handle lens barrel and used for controlling the moving lens barrel, and a fastener extending into and capable of resisting the double telecentric relay lens group along the side surface of the moving lens barrel.
In one possible solution, the cam structure further includes a spiral ring disposed between the moving barrel and the rotary hand wheel; the inner wall of the rotary hand wheel is provided with a limit groove for installing the spiral ring; the side surface of the movable lens barrel is provided with a first mounting hole into which one end of the fastener extends; the side face of the spiral ring is provided with a second mounting hole which is opposite to the mounting hole and is used for the other end of the fastening piece to extend in.
In one possible aspect, the cam structure further comprises a positioning spiral; the handle lens cone is provided with a shoulder part, one end of the rotary hand wheel is abutted to the shoulder part, and the other end of the rotary hand wheel is abutted to the positioning spiral ring.
Based on the above scheme, the 3D optical endoscope with adjustable focus provided by the invention adopts a double-light-path high-definition imaging design, and then the images of the two light paths are transmitted to a large area array CCD or CMOS through a double telecentric relay system, and finally the images are processed into 3D images through an image fusion technology for display; the system can realize 1920×1080 high-definition imaging, combines the double light paths into a single light path through the double telecentric relay system, ensures high-quality transmission of images, simplifies a rear-end system structure, and realizes high-definition imaging at different imaging distances through focusing structural design.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of a 3D optical endoscope with adjustable focus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another structure of a 3D optical endoscope with adjustable focus according to an embodiment of the present invention;
FIG. 3 is a schematic view of another structure of a 3D optical endoscope with adjustable focus according to an embodiment of the present invention;
FIG. 4 is a graph of a modulation transfer function of the dual-optical-path imaging system in a 3D optical endoscope with adjustable focus according to an embodiment of the present invention;
fig. 5 is an optical schematic diagram of the double telecentric relay system in the 3D optical endoscope with adjustable focusing according to the embodiment of the present invention;
FIG. 6 is a graph of a modulation transfer function of the double telecentric relay system in a 3D optical endoscope with adjustable focus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of the focusing assembly in the 3D optical endoscope with adjustable focusing according to the embodiment of the present invention.
Reference numerals in the drawings:
1.1-lens, 1.2-focusing assembly, 1.3-CCD/CMOS detector; 2.1-double light path imaging lens group, 2.2-double telecentric relay lens group; 3.1-imaging objective lens group, 3.2-Hopkins image-transferring optical system; 5.1-object plane of double telecentric optical system, 5.2-image plane of double telecentric optical system; 7.1-handle lens cone, 7.2-moving lens cone, 7.3-spiral ring, 7.4-fastener, 7.5-rotating hand wheel and 7.6-positioning spiral ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; either directly, or indirectly, through intermediaries, may be in communication with each other, or may be in interaction with each other, unless explicitly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
As shown in fig. 1 to 7, the embodiment of the invention provides a 3D optical endoscope capable of focusing, which comprises a lens tube 1.1, a dual-optical-path imaging lens group 2.1, a dual-telecentric relay lens group 2.2 and an imaging sensor; the double-light-path imaging lens group 2.1 is arranged in the lens tube 1.1 and is used for binocular image acquisition; the double telecentric relay lens group 2.2 combines the double light paths into a single light path, and the imaging sensor is used for receiving the image transmitted by the double telecentric relay lens group 2.2; the 3D optical endoscope with adjustable focusing further comprises a focusing assembly 1.2 connected to the double telecentric relay lens group 2.2. The embodiment of the invention provides a 3D optical endoscope capable of focusing, wherein a double-light-path imaging lens group 2.1 is a double-light-path high-definition imaging lens group, an imaging sensor is a large-area array CCD/CMOS, imaging is carried out through the double-light-path imaging lens group 2.1, two light paths are combined into one light path through a double-telecentric relay lens group 2.2, an image is transmitted to the large-area array CCD/CMOS so as to convert an optical signal into an electric signal to be transmitted to an image processing host, and the electric signal is processed by an image fusion technology to generate a 3D image; imaging with different working distances can be realized through the focusing component 1.2, and the focusing device is simple in structure and convenient to focus.
Further, the focusing assembly 1.2 has a cam structure by which the active displacement of the double telecentric relay lens group 2.2 is controlled and used for focusing.
Further, as shown in fig. 3, the dual-optical-path imaging lens group 2.1 includes two optical path systems arranged in parallel in the lens tube 1.1. The head of the optical path system is provided with an imaging objective lens group 3.1, the tail of the optical path system is provided with a Hopkins rod lens optical system (Hopkins rod lens) for image transfer, and in the embodiment, the imaging objective lens group 3.1 adopts a high-definition imaging design, and the optical transfer function MTF of the imaging objective lens group is shown in fig. 4.
Further, the imaging sensor has a single area array, and the imaging sensor comprises a CCD/CMOS detector 1.3 for simultaneously receiving two images transferred by the double telecentric relay system at the area array. In this embodiment, the CCD/CMOS detector 1.3 has a single area array, which is a large CCD/CMOS area array.
Further, the double telecentric relay lens group 2.2 has a double telecentric optical system; the object plane 5.1 of the double telecentric optical system is the common image plane of the two optical path systems; the image plane 5.2 of the double telecentric optical system is the focal plane of the CCD/CMOS detector 1.3. In this embodiment, the double telecentric relay lens group 2.2 synthesizes the double optical paths at the front end into a single optical path and transmits the single optical path to the image plane of the CCD/CMOS detector 1.3, so that complex light splitting elements such as prisms are avoided, the optical structure at the handle is simplified, and the graph of the modulation transfer function, that is, the optical transfer function, is shown in fig. 6.
Further, as shown in fig. 7, the 3D optical endoscope includes a movable moving lens barrel 7.2, and the double telecentric relay lens group 2.2 is fixedly connected in the moving lens barrel 7.2. The cam structure comprises a handle lens cone 7.1, a rotary hand wheel 7.5 and a fastener 7.4; the handle lens cone 7.1 is sleeved on the handle lens cone 7.1 of the movable lens cone 7.2, the rotary hand wheel 7.5 is arranged on the handle lens cone 7.1 and used for controlling the movable lens cone 7.2, and the fastening piece 7.4 stretches into the side face of the movable lens cone 7.2 and can be abutted against the double telecentric relay lens group 2.2. In a specific application, the moving lens barrel 7.2 is slidably connected in the handle lens barrel 7.1, and the double telecentric relay lens group 2.2 is driven to move by sliding the moving lens barrel 7.2. In addition to the above components, the 3D optical endoscope further includes components such as an optical fiber illumination system, a lens barrel, a lens bridge, and the like, which are conventional components of a general optical endoscope, and thus are not described in this patent.
The cam structure further comprises a spiral ring 7.3 arranged between the movable lens barrel 7.2 and the rotary hand wheel 7.5; the inner wall of the rotary hand wheel 7.5 is provided with a limit groove for installing the spiral ring 7.3; the side surface of the moving lens barrel 7.2 is provided with a first mounting hole into which one end of the fastening piece 7.4 extends; the side of the spiral ring 7.3 is provided with a second mounting hole which is opposite to the mounting hole and is used for the other end of the fastening piece 7.4 to extend into. The cam structure further comprises a positioning spiral ring 7.6; the handle lens barrel 7.1 is provided with a shoulder part, one end of the rotary hand wheel 7.5 is abutted against the shoulder part, and the other end of the rotary hand wheel 7.5 is abutted against the positioning spiral ring 7.6.
In this embodiment, the double telecentric relay lens group 2.2 is fixed in the moving lens barrel 7.2 by a fastening piece 7.4 (in this embodiment, a fastening screw 7.4) and connected with the spiral ring 7.3; and then the rotary hand wheel 7.5 is arranged on the peripheral side of the handle lens cone 7.1, the limiting is carried out through the positioning spiral ring 7.6, the spiral ring 7.3 is mutually nested through threads, and finally the rotary hand wheel 7.5 is rotated to enable the double telecentric relay lens group 2.2 to move back and forth in a certain range, so that the focusing function is realized.
The embodiment of the invention provides a 3D optical endoscope capable of focusing, which adopts a double-light-path imaging design, and then transmits images of two light paths to a large area array CCD/CMOS through a double telecentric relay system, and finally processes the images into a 3D image to be displayed through an image fusion technology; the double-optical-path imaging lens group 2.1 can realize 1920×1080 high-definition imaging, the double optical paths are combined into a single optical path through the double-telecentric relay system, the high-quality transmission of images is ensured, the rear-end system structure is simplified, and the focusing function and the high-definition imaging at different imaging distances are realized through the design of the cam structure in the focusing assembly 1.2.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The 3D optical endoscope capable of focusing is characterized by comprising a lens tube, a double-optical-path imaging lens group, a double-telecentric relay lens group and an imaging sensor, wherein the double-optical-path imaging lens group is arranged in the lens tube and used for binocular image acquisition, the double-telecentric relay lens group is used for combining double optical paths into a single optical path, and the imaging sensor is used for receiving images transmitted by the double-telecentric relay lens group; the 3D optical endoscope with adjustable focusing further comprises a focusing assembly connected with the double telecentric relay lens group.
2. The 3D optical endoscope of claim 1, wherein the focusing assembly has a cam structure for controlling the active displacement of the double telecentric relay lens group and for focusing.
3. The 3D optical endoscope of claim 2, wherein the dual-optical-path imaging lens group comprises two optical-path systems arranged in parallel within the lens tube.
4. The 3D optical endoscope of claim 3, wherein the head of the optical path system has an imaging objective lens group and the tail of the optical path system has a Hopkins rod lens optical system for image rotation.
5. The 3D optical endoscope of claim 4, wherein the imaging sensor has a single area array, the imaging sensor comprising a CCD/CMOS detector for simultaneously receiving two images delivered by the double telecentric relay system at the area array.
6. The 3D optical endoscope of claim 5, wherein the double telecentric relay lens group has a double telecentric optical system; the object planes of the double telecentric optical system are the common image planes of the two optical path systems; the image plane of the double telecentric optical system is the focal plane of the CCD/CMOS detector.
7. The 3D optical endoscope of any of claims 2-6, wherein the 3D optical endoscope comprises a movable barrel within which the double telecentric relay lens group is fixedly connected.
8. The 3D optical endoscope of claim 7, wherein the cam structure comprises a handle barrel sleeved on the moving barrel, a rotating hand wheel arranged on the handle barrel and used for controlling the moving barrel, and a fastener extending into and capable of abutting against the double telecentric relay lens group along the side surface of the moving barrel.
9. The 3D optical endoscope of claim 8, wherein the cam structure further comprises a spiral ring disposed between the moving barrel and the rotating handwheel; the inner wall of the rotary hand wheel is provided with a limit groove for installing the spiral ring; the side surface of the movable lens barrel is provided with a first mounting hole into which one end of the fastener extends; the side face of the spiral ring is provided with a second mounting hole which is opposite to the mounting hole and is used for the other end of the fastening piece to extend in.
10. The 3D optical endoscope of claim 9, wherein the cam structure further comprises a positioning spiral ring; the handle lens cone is provided with a shoulder part, one end of the rotary hand wheel is abutted to the shoulder part, and the other end of the rotary hand wheel is abutted to the positioning spiral ring.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111511083.7A CN116256888A (en) | 2021-12-10 | 2021-12-10 | 3D optical endoscope system capable of focusing |
| PCT/CN2022/120355 WO2023103524A1 (en) | 2021-12-10 | 2022-09-21 | Adjustable-focus 3d optical endoscope system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111511083.7A CN116256888A (en) | 2021-12-10 | 2021-12-10 | 3D optical endoscope system capable of focusing |
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| CN116256888A true CN116256888A (en) | 2023-06-13 |
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| CN202111511083.7A Pending CN116256888A (en) | 2021-12-10 | 2021-12-10 | 3D optical endoscope system capable of focusing |
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| CN (1) | CN116256888A (en) |
| WO (1) | WO2023103524A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116849583A (en) * | 2023-06-30 | 2023-10-10 | 北理工郑州智能科技研究院 | Electric focusing device for endoscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5387409B2 (en) * | 2007-09-04 | 2014-01-15 | 株式会社ニコン | Relay variable power optical system and microscope having the same |
| CN109541787B (en) * | 2018-12-04 | 2020-10-16 | 湖北久之洋红外系统股份有限公司 | Non-refrigeration type dual-waveband panoramic staring imaging optical system |
| CN110680264A (en) * | 2019-11-08 | 2020-01-14 | 中国科学院长春光学精密机械与物理研究所 | 3D optical endoscope system based on dual-optical-path design |
| CN112971687A (en) * | 2019-12-12 | 2021-06-18 | 北京林江科技有限公司 | Novel endoscope adapter capable of realizing 2D-to-3D imaging |
| CN112099212A (en) * | 2020-10-12 | 2020-12-18 | 淄博海泰新光光学技术有限公司 | Endoscope adapter optical system of internal focusing |
-
2021
- 2021-12-10 CN CN202111511083.7A patent/CN116256888A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116849583A (en) * | 2023-06-30 | 2023-10-10 | 北理工郑州智能科技研究院 | Electric focusing device for endoscope |
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| WO2023103524A1 (en) | 2023-06-15 |
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