WO2018216099A1 - Dispositif de capture d'image - Google Patents

Dispositif de capture d'image Download PDF

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Publication number
WO2018216099A1
WO2018216099A1 PCT/JP2017/019190 JP2017019190W WO2018216099A1 WO 2018216099 A1 WO2018216099 A1 WO 2018216099A1 JP 2017019190 W JP2017019190 W JP 2017019190W WO 2018216099 A1 WO2018216099 A1 WO 2018216099A1
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WIPO (PCT)
Prior art keywords
lens
subject
unit
detection unit
subject distance
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PCT/JP2017/019190
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English (en)
Japanese (ja)
Inventor
紘之 妻鳥
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株式会社島津製作所
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Application filed by 株式会社島津製作所 filed Critical 株式会社島津製作所
Priority to PCT/JP2017/019190 priority Critical patent/WO2018216099A1/fr
Publication of WO2018216099A1 publication Critical patent/WO2018216099A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C3/00—Measuring distances in line of sight; Optical rangefinders
    • G01C3/02—Details
    • G01C3/06—Use of electric means to obtain final indication

Definitions

  • the present invention relates to an imaging apparatus, and more particularly, to an imaging apparatus that captures an image during surgery and performs intraoperative support.
  • JP-A-2012-023492 discloses that an operation site to which a phosphor is administered is irradiated with a visible light and an excitation light while switching between the visible light and the excitation light.
  • a configuration for acquiring an image is disclosed.
  • the doctor may want to know the size of the surgical site.
  • a coronary artery bypass surgery there are cases where it is desired to grasp the blood vessel diameter of a transplanted blood vessel so that a doctor grasps the blood flow in the transplanted blood vessel after the operation.
  • a method for acquiring the subject distance is not disclosed in the above Japanese Patent Laid-Open No. 2012-023492, a method for acquiring the subject distance by attaching a dedicated distance measuring device such as an ultrasonic type to the imaging apparatus is generally known. ing.
  • the “subject distance” is a distance between the subject and the front lens (lens closest to the subject) of the imaging apparatus.
  • the present invention has been made to solve the above-described problems, and one object of the present invention is already mounted in an imaging apparatus without providing a dedicated device for measuring the subject distance. It is an object of the present invention to provide an imaging apparatus capable of acquiring a subject distance by a function.
  • an imaging apparatus includes a light receiving unit that images a subject and a focus lens that is movable so as to adjust a subject distance between the subject and the subject so that the subject is in focus.
  • a lens in a state in which the subject distance is adjusted so as to be in focus, and a lens unit including a lens drive unit that drives the focus lens and a lens position detection unit that detects the current position of the focus lens The subject distance is acquired based on the position of the focus lens acquired by the position detection unit.
  • an imaging apparatus includes a light receiving unit, an optical system including a movable focus lens, a lens driving unit, and a lens unit including a lens position detection unit, and detects a lens position.
  • the subject distance is acquired based on the position of the focus lens acquired by the unit.
  • the subject distance can be acquired by acquiring the position of the focus lens that is adjusted so as to be focused by a lens position detection unit that is generally included in the lens unit.
  • the subject distance can be acquired by a function already installed in the imaging apparatus without separately providing a dedicated device for measuring the subject distance.
  • the subject distance is acquired based on the position of the focus lens acquired by the lens position detection unit and the correlation between the subject distance and the position of the focus lens.
  • the subject distance can be obtained based on the correlation between the subject distance and the position of the focus lens. Therefore, the subject distance can be easily obtained by obtaining the position of the focus lens. be able to.
  • the lens position detection unit preferably includes a converter that converts the movement amount of the focus lens into an output value, and acquires the subject distance based on the output value of the converter. It is configured. With this configuration, it is not necessary to convert the output value of the converter for obtaining the position of the focus lens into the position of the focus lens, and the subject distance is obtained by directly associating the movement amount of the focus lens with the subject distance. This makes it possible to acquire the subject distance more easily.
  • the imaging apparatus preferably further includes a storage unit that stores correlation data between the position of the focus lens and the subject distance, and the position of the focus lens and the correlation data acquired by the lens position detection unit. To obtain the subject distance. With this configuration, it is possible to obtain the subject distance by collating the correlation data with the position of the focus lens. Therefore, the subject distance can be more easily compared with the case where the subject distance is obtained by calculation. Can be obtained.
  • the lens unit preferably further includes a zoom lens, and is configured to acquire an actual scale of an image captured by the light receiving unit based on the subject distance and the zoom magnification.
  • the “real scale” is a size when an object in a captured image is actually viewed with the naked eye. With this configuration, the actual scale of the captured image can be acquired even if the zoom magnification for capturing the subject is changed. As a result, even when the user arbitrarily sets the zoom magnification, it is possible to obtain the actual scale of the captured image (the size of the blood vessel diameter of the heart), so usability (user convenience) is improved. Can be improved.
  • the imaging apparatus preferably further includes an excitation light source that irradiates the subject with excitation light for exciting the fluorescent dye administered into the body of the subject as the subject.
  • the unit includes a near-infrared light detection unit that detects near-infrared light generated from the fluorescent dye by the irradiated excitation light. If comprised in this way, the near-infrared-light image which makes it possible to grasp
  • blood flow in a blood vessel that cannot be confirmed with a visible light image can be confirmed with a near-infrared light image by introducing a fluorescent dye during surgery.
  • the subject distance of the near-infrared light image can be acquired, the user can easily grasp the blood vessel diameter (actual scale) of the blood vessel of the heart.
  • the light receiving unit includes a visible light detection unit, and the visible light detection unit detects the visible light by a lens unit common to the near infrared light detection unit, It is configured to detect visible light. If comprised in this way, the image of visible light and the image of near-infrared light can be acquired using a common lens unit. As a result, an increase in the number of components can be suppressed as compared with a case where a visible light image and a near-infrared light image are captured by separate lens units. In addition, it is possible to acquire the subject distance of the visible light image and the near-infrared light image at a time as compared with the case of separately capturing images with different lens units. Work efficiency can be improved.
  • the imaging device further includes a housing and an arm mechanism that is provided in the housing and supports the imaging unit including the lens unit and the light receiving unit, and the captured image of the subject is displayed on the external display device. Is output, and the subject distance between the imaging unit supported by the arm mechanism and the subject is acquired. If comprised in this way, even when a housing
  • the degree of freedom of the location of the imaging device is increased, and usability (user convenience) can be improved.
  • the subject distance can be easily acquired regardless of the location of the imaging device, and the usefulness as an intraoperative support system can be further improved.
  • an imaging device capable of acquiring the subject distance by a function already installed in the imaging device without separately providing a dedicated device for measuring the subject distance. can do.
  • 1 is a block diagram illustrating an outline of an imaging system including an imaging apparatus according to an embodiment of the present invention.
  • 1 is a schematic diagram of an overall configuration of an imaging system including an imaging apparatus according to an embodiment of the present invention. It is a schematic diagram of the captured image which an imaging system provided with the imaging device by one Embodiment of this invention displays. It is a perspective view of an imaging device by one embodiment of the present invention. It is the schematic of the imaging part by one Embodiment of this invention. It is the block diagram which showed the outline inside the imaging part by one Embodiment of this invention. It is a figure explaining the correlation of the to-be-photographed object distance and focus lens of the imaging device by one Embodiment of this invention. It is a figure explaining the correlation data memorize
  • FIGS. 1 A configuration of an imaging system 100 including the imaging device 1 according to an embodiment will be described with reference to FIGS.
  • the imaging system 100 including the imaging device 1 includes the imaging device 1 and a display device 30.
  • the imaging device 1 captures the near-infrared light IR image 32a (see FIG. 3) and the visible light Vis image 32b (see FIG. 3) of the subject P, and the subject distance WD between the subject P and the imaging device 1 (see FIG. 3). (See FIG. 2).
  • the detailed configuration of the imaging device 1 will be described later.
  • the display device 30 is configured to display a captured image 32 (see FIG. 3) of the subject P output from the imaging device 1.
  • the display device 30 is a monitor such as a liquid crystal display, for example.
  • the imaging apparatus 1 includes an imaging unit 5 including a light receiving unit 2, a lens unit 3, and a light source unit 4, an arm mechanism 6, and a housing 7.
  • the light receiving unit 2 includes a visible light detecting unit 8 and a near infrared light detecting unit 9.
  • the visible light detection unit 8 is configured to capture an image 32b (see FIG. 3) of the visible light Vis.
  • the near infrared light detection unit 9 is configured to capture an image 32a (see FIG. 3) of the near infrared light IR. Detailed configurations of the visible light detection unit 8 and the near infrared light detection unit 9 will be described later.
  • the lens unit 3 detects the positions of the optical system 10 including the focus lens 10a, the zoom lens 10b, and the prism 13, the lens driving unit 11 that drives the focus lens 10a and the zoom lens 10b, and the focus lens 10a and the zoom lens 10b. And a lens position detection unit 12 that performs the above.
  • the focus lens 10a and the zoom lens 10b are each shown as a single lens for convenience, but the focus lens 10a and the zoom lens 10b may each be an assembly composed of a plurality of lenses.
  • the lens driving unit 11 is configured to move the focus lens 10a to a focus position when focusing.
  • the lens driving unit 11 is configured to move the zoom lens 10 b when changing the zoom magnification of the captured image 32.
  • the lens position detection unit 12 is configured to acquire current positions of the focus lens 10a and the zoom lens 10b.
  • the lens position detection unit 12 includes, for example, a potentiometer.
  • the lens position detection unit 12 is originally provided in the imaging unit 5 for detecting the positions of the focus lens 10a, the zoom lens 10b, and the like, and does not need to include the lens position detection unit 12 separately.
  • the light source unit 4 emits visible light Vis (see FIG. 2) to a subject P (patient) as a subject, and excitation for exciting a fluorescent dye administered into the body of the subject P And an excitation light source 4b that irradiates the subject P with light EL (see FIG. 2).
  • the visible light source 4a and the excitation light source 4b include, for example, a light emitting diode (LED).
  • the fluorescent dye is, for example, indocyanine green (ICG).
  • the housing 7 includes a storage unit 14 and a control unit 15.
  • the housing 7 is a cart with a built-in PC (personal computer), for example.
  • the storage unit 14 also stores correlation data 21 (see FIG. 8) with the subject distance WD (see FIG. 2) between the focus lens 10a and the subject P.
  • the storage unit 14 includes a non-volatile memory or a hard disk drive.
  • the control unit 15 is configured to acquire the subject distance WD based on the focus lens 10 a acquired by the lens position detection unit 12 and the correlation data 21 stored in the storage unit 14. A detailed method for obtaining the subject distance WD will be described later.
  • the control part 15 is comprised by processors, such as CPU, for example.
  • FIG. 2 is a diagram showing an overall configuration of the imaging system 100.
  • the imaging system 100 is configured as an intraoperative support system that captures an image 32b of visible light Vis and an image 32a of near-infrared light IR of a subject P during surgery.
  • the imaging apparatus 1 is configured to capture an image of the subject P from above the subject P when the surgeon Q performs an operation on the subject P.
  • the heart 40 of the subject P is imaged.
  • FIG. 3 is a schematic diagram illustrating an example of a captured image 32 displayed on the display device 30. In the present embodiment, an example is shown in which an image 32 of the heart 40 that has undergone coronary artery bypass surgery is captured and displayed on the display device 30.
  • FIG. 3A is a schematic diagram of an image 32 a of near-infrared light IR of the heart 40.
  • a blood vessel 41 in FIG. 3A is a blood vessel 41 transplanted by surgery.
  • FIG. 3B is a schematic diagram of an image 32b of visible light Vis.
  • FIG. 3C is a schematic diagram of an image 32c obtained by synthesizing the near-infrared light IR image 32a and the visible light Vis image 32b.
  • the imaging apparatus 1 generates a composite image 32c by synthesizing the near-infrared light IR image 32a of the heart 40 and the visible light Vis image 32b, and the near-infrared light IR image 32a is visible.
  • the light Vis image 32 b and the composite image 32 c are output to the display device 30.
  • the display device 30 displays a near-infrared light IR image 32a, a visible light Vis image 32b, and a composite image 32c.
  • a blood vessel 41 is a blood vessel 41 transplanted in coronary artery bypass surgery. After the coronary artery bypass operation, it is confirmed by the transplanted blood vessel 41 whether the blood flow is flowing normally. At that time, ICG is administered to the blood vessel connected to the blood vessel 41, and the blood flow in the blood vessel 41 is confirmed by confirming the image 32a of the near-infrared light IR generated by the excitation light EL.
  • the blood flow volume can be obtained based on, for example, the blood vessel diameter of the blood vessel 41 and the blood flow velocity in the near infrared light IR image 32a.
  • the distance between the surgical site of the subject P and the imaging device 1 (imaging unit 5) is the subject distance WD.
  • the display device 30 is arranged in the facing direction (arrow A1 direction side) of the surgeon Q (user), and when the surgeon Q performs a treatment on the subject P (patient), It arrange
  • FIG. 4 is a perspective view of the imaging apparatus 1 according to the present embodiment.
  • the imaging apparatus 1 includes a housing 7 having four wheels 70, an arm mechanism 6 provided near the front of the housing 7 in the traveling direction on the upper surface of the housing 7, and an arm mechanism 6.
  • the imaging unit 5 provided via the sub arm 50 and a monitor 72 are provided.
  • a handle 71 used when moving the casing 7 is provided behind the casing 7 in the traveling direction.
  • a recess 73 for mounting an operation unit (not shown) used for remote operation of the imaging device 1 is formed on the upper surface of the housing 7.
  • the arm mechanism 6 is provided on the front side of the housing 7 in the traveling direction (the side opposite to the handle 71).
  • the arm mechanism 6 includes a first arm member 60 connected to a support portion 66 disposed on a support column 65 provided on the front side in the traveling direction of the housing 7 by a hinge portion 62.
  • the first arm member 60 is swingable with respect to the housing 7 via a support column 65 and a support portion 66 around the hinge portion 62.
  • the monitor 72 is installed on the column 65.
  • a second arm member 61 is connected to the upper end of the first arm member 60 by a hinge portion 63.
  • the second arm member 61 can swing with respect to the first arm member 60 via the hinge portion 63.
  • the 1st arm member 60 and the 2nd arm member 61 are comprised so that an angle can be adjusted freely.
  • a support portion 52 is connected to the lower end of the second arm member 61 by a hinge portion 64.
  • the support portion 52 can swing with respect to the second arm member 61 via the hinge portion 64.
  • the support portion 52 is provided with a rotating shaft 51.
  • the sub arm 50 that supports the imaging unit 5 rotates around the rotation shaft 51 provided at the tip of the second arm member 61.
  • the imaging unit 5 moves the position of the front side of the moving direction of the housing 7 with respect to the arm mechanism 6 by the rotation of the sub arm 50 and the arm mechanism 6 which is the posture when moving the housing 7.
  • the housing 7 moves between positions on the rear side (handle 71 side) in the traveling direction.
  • FIG. 5 is a schematic diagram of the imaging unit 5 according to the present embodiment.
  • the imaging unit 5 accommodates the light receiving unit 2, the lens unit 3, and the light source unit 4 in the imaging unit 5.
  • the visible light source 4a and the excitation light source 4b are each composed of six LEDs.
  • the visible light source 4a emits visible light Vis toward the subject P.
  • the visible light Vis is, for example, white light including a plurality of wavelengths in the visible region.
  • the excitation light source 4b irradiates the subject P with excitation light EL for exciting the ICG.
  • the excitation light source 4b irradiates, for example, near infrared light having a center wavelength of 760 nm as the excitation light EL.
  • the central wavelength of the excitation light source 4b is not limited to 760 nm, and may be any wavelength as long as ICG can be excited.
  • FIG. 6 is a schematic diagram of the light receiving unit 2 and the lens unit 3 of the imaging apparatus 1 according to the present embodiment.
  • the light receiving unit 2 includes a visible light detection unit 8 and a near infrared light detection unit 9.
  • the lens unit 3 includes a focus lens 10a that reciprocates to adjust the focus, a zoom lens 10b, and a prism 13.
  • the visible light detection unit 8 is configured to detect the visible light Vis irradiated from the visible light source 4a and reflected by the subject P.
  • the near-infrared light detection unit 9 is configured to detect the near-infrared light IR generated from the ICG administered into the body of the subject P by the excitation light EL emitted from the excitation light source 4b. Has been.
  • the visible light detection unit 8 and the near-infrared light detection unit 9 are each composed of an image sensor such as a CMOS (complementary metal oxide semiconductor) and a CCD (charge coupled device), for example.
  • the visible light detection unit 8 is capable of photographing the visible light Vis image 32b as a color image.
  • the visible light detection unit 8 and the near infrared light detection unit 9 detect the visible light Vis and the near infrared light IR by the common lens unit 3 when detecting the visible light Vis and the near infrared light IR. It is configured.
  • the visible light Vis and the near-infrared light IR incident along the optical axis L with respect to the light receiving unit 2 reach the prism 13 after passing through the focus lens 10a and the zoom lens 10b.
  • visible light Vis is reflected by the prism 13 and enters the visible light detector 8.
  • the near-infrared light IR passes through the prism 13 and enters the near-infrared light detection unit 9.
  • the visible light detection unit 8 captures the visible image as a color image at a predetermined frame rate.
  • the near infrared light detection unit 9 captures a near infrared light image at a predetermined frame rate.
  • the imaging apparatus 1 uses the subject distance WD (see FIG. 2) based on the position of the focus lens 10a acquired by the lens position detection unit 12 in a state where the subject distance WD is adjusted so as to be in focus. Is configured to get.
  • the imaging device 1 control unit 15
  • the imaging device 1 has a correlation 20 between the position of the focus lens 10a acquired by the lens position detection unit 12 and the subject distance WD and the position of the focus lens 10a (see FIG. 7). Based on the above, the subject distance WD is obtained.
  • the correlation 20 between the subject distance WD, the position of the focus lens 10a, and the output value of the lens position detector 12 is acquired in advance.
  • the position at which the focus lens 10a is focused at a certain subject distance WD is an element determined by the specification of the focus lens 10a. Therefore, the subject distance WD and the position of the focus lens 10a have a one-to-one correspondence in a focused state. Further, since the current position of the focus lens 10a is detected by the lens position detection unit 12, the position of the focus lens 10a in the focused state and the output value of the lens position detection unit 12 have a one-to-one correspondence. .
  • FIG. 7 is a diagram showing a correlation 20 between the focus lens 10a acquired in advance and the subject distance WD.
  • the correlation 20 is, for example, a relationship between the position of the focus lens 10a and the output value of the lens position detection unit 12 when the subject distance WD is in the range of 50 cm to 70 cm, as shown in FIG.
  • the subject distance WD changes at intervals of 5 cm.
  • the correlation 20 is acquired in advance by measuring in advance the position of the focus lens 10a adjusted to be in focus and the output value of the lens position detector 12 at each subject distance WD.
  • the subject distance WD is 70 cm.
  • FIG. 8 is a diagram showing an example of correlation data 21 between the output value of the lens position detector 12 and the subject distance WD.
  • the lens position detection unit 12 is configured to output a value corresponding to the position of the focus lens 10a adjusted to be in focus. Then, based on the correlation 20, correlation data 21 between the output value of the lens position detection unit 12 and the subject distance WD is created in advance, and the storage unit 14 stores correlation data 21 between the position of the focus lens 10a and the subject distance WD. Is remembered.
  • the lens position detection unit 12 is configured by a potentiometer.
  • the potentiometer converts the movement amounts of the focus lens 10a and the zoom lens 10b into resistance values and outputs the resistance values. Therefore, in the present embodiment, the imaging device 1 is configured to acquire the subject distance WD based on the resistance value of the lens position detection unit 12 (potentiometer).
  • the imaging device 1 (control unit 15) is configured to acquire the subject distance WD based on the position of the focus lens 10a acquired by the lens position detection unit 12 and the correlation data 21. That is, the object distance WD corresponding to the resistance value of the lens position detection unit 12 is acquired based on the resistance value of the lens position detection unit 12 and the correlation data 21 stored in the storage unit 14. Yes.
  • the resistance value of the lens position detection unit 12 is “4”, it can be seen that the subject distance WD is 70 cm.
  • the imaging unit 5 can be freely moved by the arm mechanism 6.
  • the imaging device 1 is configured to focus on the position after the movement by the autofocus function when the imaging unit 5 is moved. At that time, the imaging apparatus 1 can acquire the subject distance WD after moving the imaging unit 5 based on the resistance value of the lens position detection unit 12.
  • the lens unit 3 includes a zoom lens 10b. Therefore, the magnification of the captured image 32 of the subject P can be changed by moving the position of the zoom lens 10 b by the lens driving unit 11.
  • the magnification is changed, the size of the captured image 32 is also changed according to the magnification. Therefore, in the present embodiment, the imaging device 1 is configured so that the actual scale of the captured image 32 can be confirmed even when the magnification of the captured image 32 is changed.
  • the imaging apparatus 1 acquires the actual scale (actual dimensions when the blood vessel 41 and the like are viewed with the naked eye) of the image 32 captured by the light receiving unit 2 based on the subject distance WD and the zoom magnification. Is configured to do.
  • the blood vessel diameter (actual size) of the blood vessel 41 shown in FIG. can be grasped.
  • the imaging device 1 has the focus lens 10a that can move so as to adjust the subject distance WD between the light receiving unit 2 that captures the subject P and the subject P so that the subject is in focus.
  • An optical system 10 a lens driving unit 11 that drives the focus lens 10a, and a lens unit 3 that includes a lens position detection unit 12 that detects the current position of the focus lens 10a.
  • the subject distance WD is acquired based on the position of the focus lens 10a acquired by the lens position detection unit 12 in a state where the WD is adjusted. Accordingly, the subject distance WD can be acquired by acquiring the position of the focus lens 10a by the lens position detection unit 12 that is generally included in the lens unit 3.
  • the subject distance WD can be acquired by the function already installed in the imaging apparatus 1 without separately providing a device for measuring the subject distance WD.
  • the imaging apparatus 1 is based on the position of the focus lens 10a acquired by the lens position detection unit 12, and the correlation 20 between the subject distance WD and the position of the focus lens 10a.
  • the subject distance WD is obtained. This makes it possible to obtain the subject distance WD based on the correlation 20 between the subject distance WD and the position of the focus lens 10a. Therefore, by obtaining the position of the focus lens 10a, the subject distance WD can be easily obtained. Can be acquired.
  • the lens position detection unit 12 includes a converter that converts the movement amount of the focus lens 10a into an output value, and acquires the subject distance WD based on the output value of the converter. Is configured to do. As a result, it is not necessary to convert the output value of the converter for obtaining the position of the focus lens 10a into the position of the focus lens 10a, and the subject distance WD is obtained by directly associating the movement amount of the focus lens 10a with the subject distance WD. Since it becomes possible to acquire, the subject distance WD can be acquired more easily.
  • the imaging apparatus 1 further includes the storage unit 14 that stores the correlation data 21 between the position of the focus lens 10 a and the subject distance WD, and is acquired by the lens position detection unit 12.
  • the subject distance WD is acquired based on the position of the focus lens 10 a and the correlation data 21.
  • the subject distance WD can be acquired by collating the correlation data 21 with the position of the focus lens 10a. Therefore, the subject distance WD can be more easily compared with the case where the subject distance WD is acquired by calculation. Can be obtained.
  • the lens unit 3 further includes the zoom lens 10b, and acquires the actual scale of the image 32 captured by the light receiving unit 2 based on the subject distance WD and the zoom magnification. It is configured as follows. Thereby, even if the zoom magnification for capturing the subject P is changed, the actual scale of the captured image 32 can be acquired. As a result, even when the user arbitrarily sets the zoom magnification, the actual scale (the blood vessel diameter of the blood vessel 41) of the captured image 32 can be acquired, so that usability (user convenience) can be improved. it can.
  • the imaging apparatus 1 irradiates the subject P with the excitation light EL for exciting the fluorescent dye administered into the body of the subject P that is the subject.
  • the excitation light source 4b is further provided, and the light receiving unit 2 includes a near-infrared light detection unit 9 that detects near-infrared light IR generated from the fluorescent dye by the irradiated excitation light EL.
  • the near-infrared light IR image 32a that makes it possible to grasp the state inside the body from outside the body can be acquired by the fluorescence of the fluorescent dye introduced into the body of the subject P.
  • the light receiving unit 2 includes the visible light detection unit 8, and the visible light detection unit 8 is common to the near-infrared light detection unit 9 when detecting the visible light Vis.
  • the lens unit 3 is configured to detect visible light Vis.
  • the image 32b of the visible light Vis and the image 32a of the near-infrared light IR can be acquired using the common lens unit 3.
  • an increase in the number of components can be suppressed as compared with a case where the image 32b of the visible light Vis and the image 32a of the near-infrared light IR are captured by separate lens units 3.
  • the subject distance WD of the visible light Vis image 32b and the near-infrared light IR image 32a at a time since it is possible to acquire the subject distance WD of the visible light Vis image 32b and the near-infrared light IR image 32a at a time, compared to the case of separately capturing with separate lens units, the subject distance The work efficiency at the time of acquiring WD can be improved.
  • the imaging apparatus 1 further includes the housing 7 and the arm mechanism 6 that is provided in the housing 7 and supports the imaging unit 5 including the lens unit 3 and the light receiving unit 2.
  • the captured image 32 of the subject P is output to the external display device 30 and the subject distance WD between the imaging unit 5 supported by the arm mechanism 6 and the subject P is acquired.
  • the imaging unit 5 can be moved near the subject P by the arm mechanism 6.
  • the subject distance WD between the imaging unit 5 and the subject P after movement can be acquired.
  • the captured image 32 of the subject P can be output to the external display device 30.
  • the degree of freedom of the location of the imaging device 1 is increased, and usability (user convenience) can be improved.
  • the subject distance WD can be easily acquired regardless of where the imaging device 1 is placed, so that the usefulness as an intraoperative support system can be further improved.
  • the subject distance WD is acquired from the correlation data 21 stored in the storage unit 14
  • the present invention is not limited to this.
  • a function derived from the correlation 20 between the output value of the lens position detection unit 12 and the subject distance WD is stored in the storage unit 14, and the subject distance WD is obtained from the function and the output value of the lens position detection unit 12. It may be configured.
  • the correlation 20 in the range of 50 cm to 70 cm is acquired in advance as the correlation 20 between the subject distance WD and the focus lens 10a.
  • the present invention is not limited to this. Since the range of the correlation 20 to be acquired is determined depending on the specification of the focus lens 10a, any range may be used as long as it matches the focus lens 10a.
  • the correlation 20 between the subject distance WD and the focus lens 10a is acquired in advance in the range of 50 cm to 70 cm in increments of 5 cm.
  • the present invention is not limited to this. . Since the interval of each data is determined according to the output value increment (output value accuracy) of the lens position detection unit 12 to be used, it may be freely set according to the output value increment of the lens position detection unit 12.
  • a potentiometer is used as the lens position detection unit 12 .
  • the present invention is not limited to this. Any member that can output the position of the focus lens 10a as a quantitative value may be used.
  • the housing 7 includes the storage unit 14 and the control unit 15 has been described, but the present invention is not limited to this.
  • the imaging unit 5 may be provided with the storage unit 14 and the control unit 15.
  • the optical system 10 including the focus lens 10a and the zoom lens 10b is provided.
  • the present invention is not limited to this.
  • the zoom lens 10b may not be included.
  • the present invention is not limited to this.
  • a sentinel lymph node biopsy is performed to examine cancer metastasis of a cancer patient
  • the position of the sentinel lymph node may be confirmed.
  • the imaging system 100 including the imaging device 1 is used for intraoperative support has been described, but the present invention is not limited to this.

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  • Electromagnetism (AREA)
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Abstract

L'invention concerne un dispositif de capture d'image (1) qui comprend : une unité de réception de lumière (2) qui capture une image d'un sujet (P) ; et une unité lentille (3), qui comprend un système optique (10) comprenant une lentille de focalisation mobile (10a), une unité d'entraînement de lentille (11) et une unité de détection de position de lentille (12). Le dispositif de capture d'image est conçu pour acquérir une distance de sujet (WD) sur la base de la position de la lentille de focalisation (10a) acquise par l'unité de détection de position de lentille (12).
PCT/JP2017/019190 2017-05-23 2017-05-23 Dispositif de capture d'image WO2018216099A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10210327A (ja) * 1997-01-21 1998-08-07 Sony Corp カメラ装置
JP2009273890A (ja) * 2008-05-15 2009-11-26 Olympus Medical Systems Corp 内視鏡装置
JP2012090725A (ja) * 2010-10-26 2012-05-17 Fujifilm Corp 電子内視鏡システム、電子内視鏡システムのプロセッサ装置、及び画像処理方法
JP2016027687A (ja) * 2014-06-25 2016-02-18 パナソニックＩｐマネジメント株式会社 投影システム
WO2016042923A1 (fr) * 2014-09-19 2016-03-24 ソニー株式会社 Appareil d'observation médicale et barillet d'objectif pour appareil d'observation médicale

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10210327A (ja) * 1997-01-21 1998-08-07 Sony Corp カメラ装置
JP2009273890A (ja) * 2008-05-15 2009-11-26 Olympus Medical Systems Corp 内視鏡装置
JP2012090725A (ja) * 2010-10-26 2012-05-17 Fujifilm Corp 電子内視鏡システム、電子内視鏡システムのプロセッサ装置、及び画像処理方法
JP2016027687A (ja) * 2014-06-25 2016-02-18 パナソニックＩｐマネジメント株式会社 投影システム
WO2016042923A1 (fr) * 2014-09-19 2016-03-24 ソニー株式会社 Appareil d'observation médicale et barillet d'objectif pour appareil d'observation médicale

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