WO2020014999A1 - 一种用于手术的不可见光显示设备和光学指导系统 - Google Patents

一种用于手术的不可见光显示设备和光学指导系统 Download PDF

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WO2020014999A1
WO2020014999A1 PCT/CN2018/097141 CN2018097141W WO2020014999A1 WO 2020014999 A1 WO2020014999 A1 WO 2020014999A1 CN 2018097141 W CN2018097141 W CN 2018097141W WO 2020014999 A1 WO2020014999 A1 WO 2020014999A1
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light
imaging
component
invisible light
invisible
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PCT/CN2018/097141
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English (en)
French (fr)
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程震
索永宽
刘弘光
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东北大学
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/36—Image-producing devices or illumination devices not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0062—Arrangements for scanning
    • A61B5/0064—Body surface scanning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0071—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by measuring fluorescence emission
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0075—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by spectroscopy, i.e. measuring spectra, e.g. Raman spectroscopy, infrared absorption spectroscopy
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4887—Locating particular structures in or on the body
    • A61B5/489—Blood vessels

Definitions

  • the invention relates to the field of medical instruments, in particular to an invisible light display device and an optical guidance system for surgery.
  • Imaging equipment in medical surgery can help doctors obtain information that cannot be directly observed by the naked eye in time, and perform X-ray, nuclear magnetic resonance, and CT imaging before or during surgery to determine the position, angle, and depth of the operation, although it can provide accurate Morphological information, but with the progress of surgery, the anatomical structure changes, it is difficult to continue to guide the surgery with the image information before surgery.
  • radiological imaging can cause ionizing damage to doctors and patients, and imaging technology and equipment are expensive and cumbersome, it is difficult to integrate with the surgical process.
  • imaging methods such as nuclide imaging, positron emission tomography, single photon emission computed tomography, and magnetic resonance imaging in intraoperative navigation / guidance. Therefore, clinical surgery for a long time still mainly relies on the naked eye of the surgeon to distinguish the lesions from normal tissues, resulting in a heavy reliance on the surgeon's experience and lack of clear objective standards.
  • Near-infrared fluorescence imaging technology has been proven to have very low tissue scattering, greater penetration depth, and low autofluorescence background, which can provide higher resolution images in practical applications.
  • the near-infrared (760nm-1mm) functional indicator fluorescence is relatively weak and invisible to the naked eye
  • the realization of near-infrared functional fluorescence imaging requires the use of a sensitive refrigeration near-infrared camera to collect images and display the images in real time on the screen .
  • these two images are often split or displayed on a large screen, as shown in Figure 1, so that the surgeon can observe and guide tumor resection or other surgical procedures during the operation.
  • 01 is an infrared camera
  • 02 is an ordinary camera.
  • the infrared camera 01 and the ordinary camera 02 can be displayed side-by-side or superimposed and displayed by imaging respectively.
  • the industry has further developed head-mounted imaging equipment, which displays near-infrared functional images on the head-mounted display device in real time, which partially solves this problem.
  • the doctor can rotate the eyeball to complete the comparison between the image and the surgical operation area.
  • This solves the problem of constantly switching between the screen and the surgical area to a certain extent, the surgeon still needs to repeatedly compare the screen image with the image of the surgical area, and it will bring extra head weight to the doctor, limiting
  • the doctor's vision has a negative impact on the flexibility and accuracy of the operation.
  • the present invention provides an invisible light display device that can be used for surgery to guide medical surgery, and can solve the problems in the prior art.
  • the present invention provides an invisible light display device for guiding surgery, including:
  • Imaging device and projection assembly for imaging invisible light of imaging object
  • the imaging device converts the imaged invisible light image into a visible light image, and makes the visible light of the visible light image return along the original light path through the imaging device by means of the projection component and is superimposed on the imaging object;
  • the original optical path is an optical path where light of the imaging object is incident on the imaging device.
  • the imaging device includes:
  • a light-splitting component located on the imaging side of the lens / lens group and capable of transmitting invisible light and reflecting visible light, said light-splitting component being located between the center of the lens / lens group and one focal length of said lens / lens group;
  • An invisible light imaging component that detects an invisible light image transmitted by the spectroscopic component
  • the invisible light imaging component is located between one and two focal lengths of the lens / lens group.
  • the invisible light imaging component is connected to the projection component;
  • the projection component is located on a visible light reflection path of the light splitting component, and the visible light reflection path is a path reflected by the visible light of the imaging object through the light splitting component;
  • the projection component projects an image formed by the imaging device to the spectroscopic component, and after being reflected by the spectroscopic component, returns along the original optical path from the imaging object to the spectroscopic component and is superimposed on the original imaging object.
  • the invisible light is near-infrared light
  • the light splitting component is a prism / beamsplitter with a near-infrared light film layer and reflecting visible light.
  • it further comprises: a housing having an opening area; the lens / lens group is located in the opening area; the spectroscopic component, invisible light imaging component, and the projection component are all installed in the housing.
  • the wavelength range of the invisible light is 760nm-1mm.
  • the present invention also provides an optical guidance system for surgery, comprising: the invisible light display device according to any one of the above schemes.
  • the invisible light display device of the present invention converts an image formed by invisible light into a visible light image and creatively integrates it into the surgical field by projection, so that the surgeon can use the naked eye (for fluorescent imaging applications that require strong laser excitation, users can wear (Color transparent goggles) directly observe the invisible light information in the surgical field.
  • the above-mentioned invisible light display device is small in size and low in cost, and can be applied to an optical guidance system for clinical surgery, which can effectively improve the effect of the doctor's operation without changing the operating habits of the doctor, and can be widely used.
  • a doctor needs to compare an image on a screen with an image in a surgical field of view by means of memory, and then perform an operation. This process divides a surgical operation into incoherent parts. During the operation, doctors need to concentrate on surgical operations. For delicate operations, they often have no time to observe the images on the screen at any time. So strictly speaking, the existing intraoperative guidance is not real-time.
  • the doctor can obtain a real-time feedback image during the operation, and this real-time imaging information provides a delay-free reference for the doctor's surgical operation. Can improve the accuracy and consistency of surgical operations.
  • FIG. 1 is a schematic diagram of the prior art; the prior art simultaneously takes a visible light image and an invisible light image and displays them on a screen;
  • FIG. 2 is a schematic structural diagram of an invisible light display device according to an embodiment of the present invention.
  • the application 1: lens / lens group; 2: spectroscopic component; 3: invisible light imaging component; 4: projection component; 5: housing.
  • the current projection technology has certain applications in the medical field, such as a vascular imaging instrument that helps medical personnel observe and find veins and blood vessels.
  • This technology uses the characteristics of venous blood vessels to absorb infrared light stronger than surrounding tissues, and visualizes superficial venous blood vessels, which is used to help medical personnel find, evaluate, and locate superficial venous blood vessels. It can effectively improve the success rate of first puncture, puncture efficiency, accuracy and efficiency of vascular search, and can improve the accuracy and safety of related treatments.
  • the invention creatively integrates the images acquired by invisible light imaging technologies such as short-wave near-infrared fluorescence imaging into the surgical field of view in a projected manner, so that the surgeon can directly observe the surgical field of vision with naked eyes (when necessary, wearing colorless transparent goggles). Near-invisible light information.
  • this technology significantly reduces the cost of equipment, and its application will greatly promote the popularization of near-infrared fluorescence imaging technology in clinical surgery, improve the effect of surgery, and benefit patients.
  • an embodiment of the present invention provides an invisible light display device for surgery.
  • the invisible light display device includes: an imaging device and a projection assembly that collect an invisible light image of an imaging object;
  • the above imaging device can convert the imaged invisible light image into a visible light image, and with the aid of a projection component, the visible light of the visible light image is returned along the original light path by the imaging device and is superimposed on the imaging object;
  • the original optical path is understood as the optical path where the light (including visible light and invisible light) of the imaging object enters the imaging device.
  • the common optical path of the imaging device and the projection component is the optical path of the light of the imaging object incident on the light splitting component in the imaging device.
  • the imaging device of this embodiment may include: a lens / lens group 1, a spectroscopic component 2, and an invisible light imaging component 3;
  • the lens / lens group 1 is used to receive invisible light and visible light incident from the imaging object; the spectroscopic component 2 is used to transmit invisible light emitted by the lens / lens group and reflect visible light; the spectroscopic component 2 is disposed on the lens / lens group The imaging side of 1 is located between the center of the lens / lens group and one focal length of the lens / lens group.
  • the projection component can make visible light of a visible light image return along the incident light path of the imaging object to the light splitting component 2 to be superimposed on the imaging object.
  • the incident light path is the light path where the light of the imaging object enters the light splitting component through the lens / lens group.
  • the spectroscopic component 2 makes an angle (such as a 45-degree angle) with the horizontal axis to achieve the separation of light with different wavelengths. That is, the invisible light emitted by the imaging object passes through the lens / lens group (such as near-infrared light) again and penetrates the spectroscopic component 2 and is focused on the imaging unit in the invisible light imaging component 3.
  • the lens / lens group such as near-infrared light
  • the invisible light imaging component 3 is configured to collect invisible light transmitted from the light splitting component 2 and form an image.
  • the invisible light imaging component 3 is located between one and two focal lengths of the lens / lens group.
  • the image formed by the invisible light imaging component is for human eyes to observe, that is, the image formed by the invisible light imaging component 3 is a visible light image. That is, the invisible light imaging module 3 converts invisible light transmitted by the spectroscopic module 2 into a visible light image.
  • the imaging object is located outside the double focal length of the object side of the lens / lens group.
  • the invisible light imaging component 3 described above is connected to the projection component 4, and the visible light image formed by the invisible light imaging component 3 is projected out through the projection component 4.
  • the projection component 4 is located on a visible light reflection path of the light splitting component 2.
  • the position of the projection component 4 in FIG. 2 can also be adjusted, and a refraction / reflection component is added between the projection component 4 and the beam splitting component 2 so that the light of the projection component 4 passes the refraction / reflection component along the visible light reflection path. Enter the beam splitter 2.
  • This embodiment can be adjusted according to actual needs, and the specific position of the projection component 4 is not limited.
  • a refractive / reflective component can be used on the visible light path between the projection component 4 and the light splitting component 2 to adjust the position of the projection component 4 in the invisible light display device.
  • the visible light reflection path is a path after visible light of the imaging object is reflected by the light splitting component.
  • the projection module 4 includes a projection light source and a mirror projection display unit. Among them, the projection light source emits visible light, and the visible light image formed by the invisible light imaging module 3 displayed by the mirror projection display unit is reflected by the spectroscopic module 2 and then emitted through the lens / lens group 1. , And return along the original light path from the imaging object to the spectroscopic component and superimpose on the imaging object.
  • the above-mentioned invisible light may be near-infrared light, for example, the wavelength band may be 760nm-1mm.
  • the above-mentioned beam splitting component may be a prism / beamsplitter with a transmission near infrared light film layer.
  • the invisible light display device shown in FIG. 2 described above may further include: a housing 5 having an opening area; the lens / lens group 1 is located in the opening area of the housing 5 and is used for incident visible light and Invisible light or visible light that is returned and used to be superimposed on the imaging object; the spectroscopic component 2, the invisible light imaging component 3, and the projection component 4 are all installed in the housing.
  • the invisible light display device may also set a control switch of the projection component, so that the doctor can control the projection switch at any time, and adjust the projection brightness, color and other parameters.
  • the invisible light display device of this embodiment can convert an image formed by invisible light into a visible light image and creatively integrate it into the surgical field of view in a projection manner, so that the surgeon can directly observe the invisible field of the surgical field with the naked eye or wearing goggles in real time.
  • the visible light information solves the problem that doctors need to continuously switch between the screen and the surgical area in the prior art, does not change the doctor's surgical operation habits, and improves the accuracy of the doctor's operation.
  • the above-mentioned invisible light display device is small in size and low in cost, and can be applied to an optical guidance system for clinical surgery to effectively improve the effect of a doctor's operation and has a good value for promotion and use.
  • the positions of the projection component and the like are flexibly set, so that the structure can be flexibly set as required.
  • an embodiment of the present invention further provides an optical guidance system.
  • the optical guidance system in the operation may include the invisible light display device mentioned in any of the above embodiments.
  • the invisible light display device of this embodiment does not need to capture visible light.
  • the invisible light information of the imaging object can be converted into a visible light image by the imaging device and the projection component, and displayed on the original imaging object according to the original light path projection.
  • the optical guidance system uses any of the methods described in the above embodiments, and the near-infrared optical information that is invisible to the naked eye becomes visible, and is directly projected on the actual surgical area.
  • the doctor can observe the high-resolution Visible light information, real-time display of invisible light information of the surgical operation site, improve the accuracy and safety of the operation, which is equivalent to expanding the visual ability of the naked eye in real time.
  • the invisible light display device can be used as a separate system, or a projection attachment can be added to the existing surgical guidance system to achieve this function, and it can also be used in conjunction with a surgical shadowless lamp.
  • the invisible light display device of this embodiment can implement real-time imaging projection alone, or it can be connected to a display and display related images on the display.

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Abstract

一种用于手术的不可见光显示设备和光学指导系统，其中不可见光显示设备包括，用于对成像物体的不可见光成像的成像装置(3)和投影组件(4)，成像装置(3)将成像的不可见光图像转换为可见光图像，并借助于所述投影组件(4)使得可见光图像的可见光通过成像装置(3)沿着原光路返回并叠加在成像物体上，所述原光路为成像物体的光入射至成像装置(3)的光路，上述不可见光显示设备能够实时采集肉眼不可见的图像信息，并整合进手术视野，为手术医生提供实时的参考。

Description

一种用于手术的不可见光显示设备和光学指导系统 技术领域
本发明涉及医学器械领域，特别是一种用于手术的不可见光显示设备和光学指导系统。
背景技术
医学手术中的影像学设备能够帮助医生及时地获得肉眼无法直接观察到的信息，在手术之前或过程中进行X光、核磁共振、CT等成像来判断手术位置、角度和深度，虽能提供精确的形态学信息，但随着手术的进程，解剖结构发生变化，术前的图像信息难以继续指导手术。而且，由于放射性成像对医生和患者会造成电离损伤，同时成像技术和设备昂贵笨重，难以与手术过程相整合。这些因素限制了核素成像、正电子发射断层扫描、单光子发射计算机断层和磁共振成像等成像方式在术中导航/指导中的应用。所以，很长一段时间的临床手术仍然主要依赖手术医生的肉眼鉴别病变与正常组织，导致对手术医生经验的严重依赖，缺乏明确的客观标准。
因此临床上对实时手术光学指导系统有着迫切需求。随着近红外荧光成像技术的发展，近红外荧光成像技术导航/指导成为当前发展的热点。目前存在的利用近红外光学成像的系统已经用于临床指导手术，能够为手术医生提供肉眼或手术显微设备难以辨别的光学信息，且具有成像灵敏，分辨率高，操作简单等特点，逐渐受到外科医生的青睐，但仍存在一些问题有待解决。
近红外荧光成像技术已被证明具有很低的组织散射，更大的穿透深度，低的自体荧光背景，在实际应用中能够提供分辨率更高的图像。但由于近红外(760nm-1mm)功能指示性荧光比较微弱，且肉眼不可见，因此实现近红外功能荧光成像需要利用灵敏的制冷型近红外相机进行图 像的采集，并将图像实时显示在屏幕上。为了与形态学白光图像比较，也常将此两种图像分屏或融合显示在大屏幕上，如图1所示，以便外科医生在术中观察、指导肿瘤切除或其他手术过程。在图1中，01为红外相机，02为普通相机，通过红外相机01和普通相机02分别成像可以并列显示或者叠加融合显示。
但由于屏幕显示与医生肉眼观察视野存在差别，且医生需要在术中不断在屏幕与手术区域切换，容易造成屏幕显示的图像与实际手术操作视野之间的误差，增加了手术难度，也延长了宝贵的手术时间。
业内人士进一步研发头戴式成像设备，将近红外功能图像实时显示于头显装置，部分解决了该问题。医生转动眼球即可完成图像与手术操作区域的对比。虽然这在一定程度上解决了不断在屏幕与手术区域切换的问题，却仍需术者反复将屏幕图像与手术区域之间图像进行比对，且会给医生带来额外的头部负重，限制了医生的视野，对手术操作的灵活性与精确性造成负面影响。
发明内容
针对现有技术中的问题，本发明提供了一种可用于手术的不可见光显示设备用于指导医学手术，能解决现有技术存在的问题。
第一方面，本发明提供一种用于指导手术的不可见光显示设备，包括：
用于对成像物体的不可见光成像的成像装置和投影组件；
所述成像装置将成像的不可见光图像转换为可见光图像，并借助于所述投影组件使得所述可见光图像的可见光通过成像装置沿着原光路返回并叠加在所述成像物体上；
所述原光路为所述成像物体的光入射至所述成像装置的光路。
可选地，所述成像装置包括：
接收所述成像物体的可见光和不可见光影像的透镜/透镜组；
位于透镜/透镜组的成像侧的能够透射不可见光并反射可见光的分光组件，所述分光组件位于透镜/透镜组中心与所述透镜/透镜组的一倍焦距之间；
检测所述分光组件透射的不可见光影像的不可见光成像组件；
所述不可见光成像组件位于所述透镜/透镜组的一倍焦距和二倍焦距之间。
可选地，所述不可见光成像组件连接所述投影组件；
所述投影组件位于所述分光组件的可见光反射路径上，所述可见光反射路径为所述成像物体的可见光经由所述分光组件反射的路径；
所述投影组件将所述成像装置所成图像投射至所述分光组件，经所述分光组件反射后，沿着所述成像物体至分光组件的原光路返回并叠加在原成像物体上。
可选地，所述不可见光为近红外光，所述分光组件为带有透射近红外光膜层并反射可见光的棱镜/分束镜。
可选地，还包括：具有开口区域的壳体；所述透镜/透镜组位于所述开口区域；所述分光组件、不可见光成像组件和所述投影组件均安装在所述壳体内。
可选地，所述不可见光的波长范围为760nm-1mm。
第二方面，本发明还提供一种用于手术的光学指导系统，包括：如上任一方案所述的不可见光显示设备。
本发明具有的有益效果：
本发明的不可见光显示设备将不可见光成像的图像转换为可见光图像并创造性地以投影的方式整合进手术视野，使得手术医生可以裸眼(对于需要强激光激发的荧光成像应用，使用者可佩带无色透明护目镜)直接观察手术视野中的不可见光信息。
进一步地，上述不可见光显示设备体积小，成本低，可以应用在临 床手术的光学指导系统中，在不改变医生手术操作习惯的基础上，有效提高医生手术的效果，较好的推广使用。
本发明解决了现有技术中的如下问题：
1.在现有技术中，使用者需要反复对比显示器上的图像和现实中的手术视野，将二者对比，为实际操作提供参考。而应用本发明时，不可见光直接叠加在被成像物体上，使得操作更加直观，避免图像比对中出现的误差。医生不再需要在屏幕与手术区域之间切换视野，缩短手术操作时间，降低手术操作风险。
2.在现有技术中，医生需要凭借记忆将屏幕上的图像与手术视野中的图像所进行对比，然后进行操作，这个过程将手术操作动作分割成不连贯的几部分。医生在操作过程中，需要集中精力在手术操作上，对于精细的操作，常常无暇随时观察屏幕上的图像。因此严格来讲，现有的术中指导不是实时的。在本发明中，医生能够在操作中获得实时的反馈图像，这种实时的成像信息为医生的手术操作提供无延时的参考。能够提高手术操作的准确性和连贯性。
附图说明
图1为现有技术示意图；现有技术同时拍摄可见光图像和不可见光图像，并在屏幕上显示；
图2为本发明实施例提供的不可见光显示设备的结构示意图。
附图标记说明
现有技术：01：红外相机；02：普通相机；
本申请：1：透镜/透镜组；2：分光组件；3：不可见光成像组件；4：投影组件；5：外壳。
具体实施方式
为了更好的解释本发明，以便于理解，下面结合附图，通过具体实施方式，对本发明作详细描述。
目前的投影技术在医学领域有一定的应用，例如帮助医护人员观测查找静脉血管的血管显像仪。该技术利用静脉血管对红外光吸收强于周围组织的特性，将浅表静脉血管可视化，用于帮助医护人员查找、评估、定位浅表静脉血管。可有效提高首次穿刺成功率、穿刺效率、血管查找准确率和效率，并能提高相关治疗的精准性和安全性。
本发明的创新难点：1.将原成像物体的不可见光信息转换为可见光图像并直接在被成像物体上显示，为变化的成像区域提供实时的参考；2.本发明中，利用相同光路，能够通过硬件实现投影在原成像物体的精确重合；3.可见光成像不受影响，可以在不影响传统的可见光操作的同时，为手术操作者提供不可见光的信息。
本发明将短波近红外荧光成像等不可见光成像技术获取的图像创造性地以投影的方式整合进手术操作视野，使得手术医生可以裸眼(必要时可佩带无色透明护目镜)直接观察手术视野中的近红外不可见光信息。这一技术同时显著降低了设备成本，其应用将极大地促进近红外荧光成像技术在临床手术应用的普及，改进手术效果，造福患者。
如图2所示，本发明实施例提供一种用于手术的不可见光显示设备，该不可见光显示设备包括：采集成像物体的不可见光图像的成像装置和投影组件；
上述的成像装置可将成像的不可见光图像转换为可见光图像，并借助于投影组件使得可见光图像的可见光通过成像装置沿着原光路返回并叠加在所述成像物体上；
所述原光路理解为所述成像物体的光(包括可见光和不可见光)入射至所述成像装置的光路。
所述成像装置与投影组件的共同光路为所述成像物体的光入射至所述成像装置内的分光组件的光路。
如图2所示，本实施例的成像装置可包括：透镜/透镜组1、分光组件2、不可见光成像组件3；
其中，透镜/透镜组1用于接收成像物体入射的不可见光和可见光；分光组件2用于将透镜/透镜组出射的不可见光透射，可见光反射；该分光组件2设置在所述透镜/透镜组1的成像侧且位于透镜/透镜组中心与透镜/透镜组的一倍焦距之间。
本实施例中投影组件可使得可见光图像的可见光沿着所述成像物体至分光组件2的入射光路返回以叠加在所述成像物体上。入射光路为成像物体的光经过透镜/透镜组入射至分光组件的光路。
在图2中，分光组件2与水平轴成一定角度(如45度角)以实现不同波长光的分离。即成像物体发出的不可见光经过透镜/透镜组再次(如近红外光)穿透分光组件2汇聚于不可见光成像组件3中的成像单元。
不可见光成像组件3用于采集从分光组件2透射的不可见光并形成图像，不可见光成像组件3位于所述透镜/透镜组的一倍焦距和两倍焦距之间。此时，应说明的是，不可见光成像组件所成的像是供人眼观察的，即不可见光成像组件3形成的图像为可见光图像。即，不可见光成像组件3将分光组件2透射的不可见光转换为可见光图像。
本实施例中成像物体位于透镜/透镜组物体侧的二倍焦距之外。
上述的不可见光成像组件3与投影组件4相连，将不可见光成像组件3形成的可见光图像通过投影组件4投影出去。在图2中，投影组件4位于所述分光组件2的可见光反射路径上。在具体实现过程中，还可以调整图2中投影组件4的位置，在投影组件4与分光组件2之间增加折射/反射组件，使得投影组件4的光线经过折射/反射组件沿着可见光反射路径进入到分光组件2上。本实施例可根据实际需要调整，并不限定投影组件4的具体位置。即在投影组件4之后和分光组件2之间的可见光路径上可以使用折射/反射组件，以调整投影组件4在不可见光显示设备中的位置。所述可见光反射路径为所述成像物体的可见光经由所述分光 组件反射后的路径。
投影组件4包括：投影光源和镜投影显示单元；其中，投影光源发出可见光，镜投影显示单元显示的不可见光成像组件3形成的可见光图像，经过分光组件2反射后，经透镜/透镜组1出射，并沿着所述成像物体至分光组件的原光路返回并叠加在所述成像物体上。
在具体应用中，上述的不可见光可为近红外光，如波段可为760nm-1mm，此时，上述的分光组件可为带有透射近红外光膜层的棱镜/分束镜。
另外，上述图2中所示的不可见光显示设备还可包括：具有开口区域的壳体5；所述透镜/透镜组1位于所述壳体5的开口区域，用于入射成像物体的可见光和不可见光或者出射返回的用于叠加在成像物体上的可见光；分光组件2、不可见光成像组件3和所述投影组件4均安装在所述壳体内。
在具体实现过程中，不可见光显示设备还可以设置投影组件的控制开关，使医生可以随时控制投影的开关，调整投影的亮度、颜色等参数。
本实施例的不可见光显示设备能够将不可见光成像的图像转换为可见光图像并创造性地以投影的方式整合进手术视野，使得手术医生可以实时地以裸眼或佩带护目镜直接观察手术视野中的不可见光信息，解决了现有技术中医生需要不断在屏幕与手术区域切换的问题，不改变医生手术操作习惯，提高医生操作的精准性。
进一步地，上述不可见光显示设备体积小，成本低，可以应用在临床手术的光学指导系统中，以有效提高医生手术的效果，具有较好的推广使用价值。
本实施例中在不可见光显示设备的外壳内通过增加折射/反射组件等，进而灵活设置投影组件等的位置，使得结构可以根据需要灵活设置。
根据本发明实施例的另一方面，本发明实施例还提供一种光学指导系统，该手术中光学指导系统可包括上述任意实施例提及的不可见光显示设备。
举例来说，本实施例的不可见光显示设备不需要拍摄可见光，可以通过成像装置和投影组件，实现将成像物体的不可见光信息转换成可见光图像，并按照原光路投影在原成像物体上显示。
光学指导系统即利用上述实施例的任一方法，肉眼不可见的近红外光学信息变为可见，直观的投射于现实手术区域，医生利用肉眼或手术显微设备即可观察到高分辨率的不可见光信息，实时显示手术操作部位的不可见光信息，提高手术的精确性和安全性，相当于实时拓展了肉眼的视觉能力。
不可见光显示设备可以作为单独系统使用，也可以为现有手术指导系统增加投影附件来实现此功能，还可以与手术无影灯整合在一起使用。
或者，本实施例的不可见光显示设备能够单独实现实时的成像投影，也可以连接显示器，并在显示器上显示相关图像。
上述各个实施例可以相互参照，本实施例不对各个实施例进行限定。
最后应说明的是：以上所述的各实施例仅用于说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述实施例所记载的技术方案进行修改，或者对其中部分或全部技术特征进行等同替换；而这些修改或替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (7)

  1. 一种用于手术的不可见光显示设备，其特征在于，包括：用于对成像物体的不可见光成像的成像装置和投影组件；
    所述成像装置将成像的不可见光图像转换为可见光图像，并借助于所述投影组件使得所述可见光图像的可见光通过成像装置沿着原光路返回并叠加在所述成像物体上；
    所述原光路为所述成像物体的光入射至所述成像装置的光路。
  2. 根据权利要求1所述的不可见光显示设备，其特征在于，所述成像装置包括：
    接收所述成像物体的可见光和不可见光影像的透镜/透镜组；
    位于透镜/透镜组的成像侧的能够透射不可见光并反射可见光的分光组件，所述分光组件位于透镜/透镜组中心和所述透镜/透镜组的一倍焦距之间；
    检测所述分光组件透射的不可见光影像的不可见光成像组件；
    所述不可见光成像组件位于所述透镜/透镜组的一倍焦距和二倍焦距之间。
  3. 根据权利要求2所述的不可见光显示设备，其特征在于，所述不可见光成像组件连接所述投影组件；
    所述投影组件位于所述分光组件的可见光反射路径上，所述可见光反射路径为所述成像物体的可见光经由所述分光组件反射的路径；
    所述投影组件将所述不可见光成像组件所成图像/影像投射至所述分光组件，经所述分光组件反射后，沿着所述成像物体至分光组件的原光路返回并叠加在原成像物体上。
  4. 根据权利要求3所述的不可见光显示设备，其特征在于，
    所述不可见光为近红外光，所述分光组件为带有透射近红外光膜层并反射可见光的棱镜/分束镜。
  5. 根据权利要求4所述的不可见光显示设备，其特征在于，
    还包括：具有开口区域的壳体；所述透镜/透镜组位于所述开口区域； 所述分光组件、不可见光成像组件和所述投影组件均安装在所述壳体内。
  6. 根据权利要求1所述的不可见光显示设备，其特征在于，
    所述不可见光的波长范围为760nm-1mm。
  7. 一种用于手术的光学指导系统，其特征在于，包括：
    如上权利要求1至6任一所述的不可见光显示设备。
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