Medical Observation System

Abstract

This medical observation system comprises: a white light source which radiates white light; an infrared light source which radiates infrared light; a light source control unit which performs control for alternately repeating, over time, a first mode in which the white light source is made to radiate the white light and a second mode in which the infrared light source is made to radiate the infrared light and the white light source is made to radiate light having a wavelength contained in a wavelength range from green to blue; and an imaging unit which captures images of a subject. As a result, a medical observation system is provided which makes it possible to simultaneously perform normal observation and infrared observation without impeding the work of an operator.

Description

[Technical Field]

[0001] The present disclosure relates to medical observation systems. [Background technology]

[0002] Conventionally, there are known endoscopes that can switch between normal observation, in which a subject is irradiated with white light, and infrared observation, in which a subject is irradiated with infrared light, or can perform these observations simultaneously. Patent Document 1 describes an endoscope that can perform normal observation and infrared observation simultaneously by irradiating a subject with white light and infrared light alternately in a time series. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2013-26987 Summary of the Invention [Problem to be solved by the invention]

[0004] However, unlike endoscopes used to observe the abdominal cavity, in the case of endoscopes and microscopes used in laparotomy and craniotomy, when the subject is illuminated with white light and infrared light that are alternately switched in a time series, the surgeon is aware of the light switching, which can hinder the surgeon's work.

[0005] The present disclosure has been made in view of the above, and aims to provide a medical observation system that allows normal observation and infrared observation to be performed simultaneously without interfering with the work of the surgeon. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the object, a medical observation system according to one aspect of the present disclosure includes a white light source that irradiates white light, an infrared light source that irradiates infrared light, a light source control unit that performs control to alternately repeat in a time series a first mode in which the white light source irradiates the white light, and a second mode in which the infrared light source irradiates the infrared light and the white light source irradiates light of a wavelength included in a green to blue wavelength band, and an imaging unit that images a subject.

[0007] The medical observation system according to an aspect of the present disclosure also includes an image superimposition processing unit that superimposes an infrared light image captured in the second mode on a white light image captured in the first mode.

[0008] In addition, in the medical observation system according to one aspect of the present disclosure, the light source control unit makes the amount of light emitted by the white light source in the second mode greater than the amount of white light emitted by the white light source in the first mode.

[0009] In the medical observation system according to an aspect of the present disclosure, the imaging unit is an exoscope that captures an image of the subject from outside the body.

[0010] In addition, in a medical observation system according to an aspect of the present disclosure, the imaging unit includes a color filter having a filter that transmits red light, a filter that transmits green light, and a filter that transmits blue light, and a sensor that receives light that has transmitted through the color filter.

[0011] In addition, in a medical observation system according to an aspect of the present disclosure, the imaging unit includes a spectroscope that reflects light from the subject in different directions for each wavelength, and a plurality of sensors having sensitivities corresponding to the wavelengths split by the spectroscope.

[0012] In addition, in a medical observation system according to an aspect of the present disclosure, the imaging unit includes a spectroscopic unit that branches light from the subject into a plurality of paths, and a plurality of sensors that are arranged on the multiple paths branched by the spectroscopic unit.

[0013] In addition, in a medical observation system according to an aspect of the present disclosure, the white light source includes an R light source that irradiates red light, a G light source that irradiates green light, and a B light source that irradiates blue light, and the light source control unit, in the first mode, causes the R light source, the G light source, and the B light source to irradiate the white light obtained by superimposing RGB light, and in the second mode, causes the infrared light source to irradiate the infrared light, and causes the G light source to irradiate the green light or causes the G light source and the B light source to irradiate the light obtained by superimposing the green light and the blue light.

[0014] In addition, in the medical observation system according to an aspect of the present disclosure, the light source control unit inserts a filter that removes red light onto the optical path of the light emitted from the white light source in the second mode, and removes the filter from the optical path of the light emitted from the white light source in the first mode.

[0015] In a medical observation system according to an aspect of the present disclosure, the filter is plate-shaped, and the light source control unit translates the filter to insert or remove it from the optical path of the light emitted by the white light source.

[0016] In addition, in a medical observation system according to an aspect of the present disclosure, the filter is a disk-shaped filter in which filter portions and gap portions are arranged alternately along the circumferential direction, and the light source control unit rotates the filter to insert or remove it from the optical path of the light emitted by the white light source.

[0017] The medical observation system according to an aspect of the present disclosure also includes a control unit that controls the shutter speed of the imaging unit. [Effects of the Invention]

[0018] According to the present disclosure, it is possible to realize a medical observation system that can simultaneously perform normal observation and infrared observation without interfering with the work of the surgeon. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a schematic diagram showing the configuration of an endoscope observation system according to an embodiment. [Figure 2] FIG. 2 is a diagram showing the change over time of the light irradiated onto the subject by the endoscope observation system shown in FIG. [Figure 3] FIG. 3 is a diagram showing the change over time in the amount of G light or G light and B light. [Figure 4] FIG. 4 is a schematic diagram showing the configuration of an endoscope observation system according to a modified example. [Figure 5] FIG. 5 is a diagram showing the change over time of the light irradiated onto the subject by the endoscope observation system shown in FIG. [Figure 6] FIG. 6 is a diagram showing an example of a wavelength band removed by a filter. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, modes for carrying out the present disclosure (hereinafter, referred to as embodiments) will be described with reference to the drawings. Note that the present disclosure is not limited to the embodiments described below. Furthermore, in the drawings, the same parts are denoted by the same reference numerals.

[0021] (Embodiment) FIG. 1 is a schematic diagram showing the configuration of an exoscopic observation system according to an embodiment. The exoscopic observation system 1 is a medical observation system used to assist the surgeon in observing a subject H when performing open surgery such as laparotomy, thoracotomy, or craniotomy on the subject H, and is capable of simultaneously performing normal observation and infrared observation. Note that the medical observation system is, for example, an exoscopic observation system including an exoscope, but may also be an observation system (surgical microscope system) including a microscope such as a surgical microscope or an optical microscope. The exoscopic observation system 1 includes a processor 10, an exoscopic camera 20, a light source device 30, and a display unit 40.

[0022] The processor 10 includes a clock generating unit 11 , a synchronization signal generating unit 12 , a light source control unit 13 , an image superimposition processing unit 14 , a control unit 15 , and a storage unit 16 .

[0023] The clock generating unit 11 generates a clock signal, which is a timing signal for driving the endoscope observation system 1 , and outputs the clock signal to the imaging unit 22 .

[0024] The synchronization signal generator 12 generates a synchronization signal, which is a timing signal for driving the endoscope observation system 1, and outputs the synchronization signal to the imaging unit 22 and the light source controller 13. The synchronization signal is a signal that controls the timing of switching between a first mode in which the white light source irradiates white light, and a second mode in which the infrared light source irradiates infrared light and the white light source irradiates light with a wavelength included in the green to blue wavelength band.

[0025] The light source control unit 13 controls the light source device 30 at a timing according to the synchronization signal under the control of the control unit 15. The light source control unit 13 performs control to alternately repeat in time series a first mode in which the white light source irradiates white light, and a second mode in which the infrared light source irradiates infrared light and the white light source irradiates light with a wavelength included in the green to blue wavelength band.

[0026] FIG. 2 is a diagram showing the change over time in light irradiated onto the subject by the endoscope observation system shown in FIG. 1 . As shown in FIG. 2 , the light source control unit 13 alternately irradiates the surgical field with white light, which is a superposition of R, G, and B light, and infrared light and G light, or G and B light, at a cycle of, for example, 1 / 120 seconds. In other words, in the first mode, the light source control unit 13 causes the R, G, and B light sources of the white light source to irradiate white light, which is a superposition of R, G, and B light. In the second mode, the light source irradiates infrared light, and causes the G light source to irradiate G light, or causes the G and B light sources to irradiate G and B light, respectively. In this case, the white light source alternately switches the wavelength band of the light to be irradiated between the first and second modes, but the light irradiation is continuous. Note that the irradiation cycle is not limited to 1 / 120 seconds, and may be any cycle that allows for alternating irradiation of white light, infrared light, G light, or G and B light in time series.

[0027] 3 is a diagram showing the change over time in the light intensity of G light or G light and B light. As shown in FIG. 3, the light source control unit 13 may set the light intensity of the light emitted by the white light source in the second mode to be greater than the light intensity of the white light emitted by the white light source in the first mode. In the second mode, the white light source does not emit R light, so the overall light intensity is smaller than in the first mode. Therefore, in the second mode, the light intensity of B light or B light and G light may be set to be greater than in the first mode, thereby reducing the difference in the overall light intensity between the first mode and the second mode and making it difficult for the surgeon to perceive the change in light.

[0028] The image superimposition processing unit 14 superimposes an infrared light image captured in the second mode on a white light image captured in the first mode. The image superimposition processing unit 14 adds a color such as green to the monochrome infrared light image and superimposes it on the white light image. For example, when performing ICG (Indocyanine Green) fluorescence observation using the endoscope observation system 1, the image of fluorescence emitted by excitation with infrared light is captured, and the captured image is superimposed on the white light image. This makes it easier for the surgeon to visualize blood vessels and the like.

[0029] The control unit 15 controls the overall operation of the endoscope observation system 1. The control unit 15 also controls the shutter speed of the imaging unit 22.

[0030] The clock generation unit 11, synchronization signal generation unit 12, light source control unit 13, image superimposition processing unit 14, and control unit 15 are realized using a general-purpose processor such as a CPU (Central Processing Unit) having an internal memory in which a program is recorded, or a dedicated processor such as an ASIC (Application Specific Integrated Circuit) or various arithmetic circuits that execute specific functions. Alternatively, they may be configured using an FPGA (Field Programmable Gate Array), which is a type of programmable integrated circuit. When configured using an FPGA, a memory for storing configuration data may be provided, and the FPGA, which is a programmable integrated circuit, may be configured using the configuration data read from the memory.

[0031] The storage unit 16 is configured using semiconductor memory such as flash memory or DRAM (Dynamic Random Access Memory), and temporarily stores various programs executed by the endoscope observation system 1 and data being processed.

[0032] The endoscope camera 20 includes a lens 21 and an imaging unit 22 .

[0033] The lens 21 collects light from the subject H. For example, in the case of open surgery such as abdominal surgery, thoracic surgery, or craniotomy, the subject H is the surgical field.

[0034] The imaging unit 22 captures an image of the subject H from outside the body and generates an image. The imaging unit 22 includes a color filter having a filter that transmits red light, a filter that transmits green light, and a filter that transmits blue light, and a sensor that receives light transmitted through the color filter. The color filter may be a color filter in which filters corresponding to each color are arranged in a two-dimensional matrix in a predetermined pattern. The predetermined pattern may be, for example, a Bayer array, but is not particularly limited thereto. The sensor (imaging element) is configured using a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). The sensor is preferably an imaging element having a pixel count corresponding to a resolution of, for example, 4K (3840 horizontal pixels × 2160 vertical pixels), 8K (7680 horizontal pixels × 4320 vertical pixels), or square 4K (3840 or more horizontal pixels × 3840 or more vertical pixels). The imaging unit 22 may also include an excitation light cut filter between the lens and the color filter of the sensor. For example, a filter that blocks infrared excitation light and transmits fluorescent light, which is infrared light with a wavelength different from that of the excitation light, is provided in front of the sensor that receives red light. The sensor may be a single sensor chip or multiple sensor chips. For example, a prism that separates incident light into predetermined wavelength bands may be provided, and each wavelength band may be captured by a different light-receiving element. For example, in a two-chip configuration with two sensor chips, one may be used to receive RGB light (visible light) and the other may be used to receive infrared light. In a three-chip configuration with three sensor chips, one may be used to receive R light, one may be used to receive G and B light, and one may be used to receive infrared light. Note that when multiple sensor chips are used, light in the desired wavelength band can be received by the sensor by using a short-pass filter, long-pass filter, or band-pass filter that matches the wavelength of the light received by each sensor. Furthermore, multiple light-receiving elements may be provided for stereoscopic vision.

[0035] The light source device 30 includes a power supply unit 31, a white light source 32, an infrared light source 33, a switch unit , a multiplexer 35, and a light source diaphragm .

[0036] The power supply unit 31 supplies power to the white light source 32 and the infrared light source 33 under the control of the light source control unit 13 .

[0037] The white light source 32 irradiates the subject with white light. The white light source 32 has an R light source 32a that irradiates red light, a G light source 32b that irradiates green light, and a B light source 32c that irradiates blue light. The R light source 32a to B light source 32c are configured using solid-state light emitting elements such as LEDs (Light Emitting Diodes) and LDs (Laser Diodes), or light emitting members such as laser light sources.

[0038] The infrared light source 33 irradiates the subject with infrared light. The infrared light source 33 is configured using a solid-state light emitting element such as an LED or LD, or a light emitting member such as a laser light source.

[0039] The switch unit 34 has switches 34a to 34d connected to the R light source 32a to B light source 32c and the infrared light source 33, respectively, and switches whether or not to supply power to the R light source 32a to B light source 32c and the infrared light source 33 under the control of the light source control unit 13.

[0040] The combiner 35 combines the light emitted by the R light source 32 a to B light source 32 c and the infrared light source 33 .

[0041] The light source diaphragm 36 adjusts the amount of light output to the endoscope camera 20 .

[0042] The display unit 40 displays images captured by the endoscope camera 20. The display unit 40 includes a display panel made of a CRT (Cathode Ray Tube) display, liquid crystal, or organic EL (Electro Luminescence) display. In addition to the display unit 40, an output device may be provided that outputs information using a speaker, printer, etc.

[0043] According to the embodiment described above, the light source device 30 irradiates B light or B light and G light even when infrared observation is performed (second mode), so that the change in color of the light irradiated onto the subject H between normal observation (first mode) and infrared observation (second mode) is reduced, allowing normal observation and infrared observation to be performed simultaneously without interfering with the surgeon's work. In particular, in this embodiment, as described with reference to FIG. 2, the white light source continues to irradiate the subject H with light during normal observation (first mode) and infrared observation (second mode), and the change in color of the light is reduced, allowing normal observation and infrared observation to be performed simultaneously without interfering with the surgeon's work.

[0044] Furthermore, in infrared observation, the amount of B light or B light and G light may be made greater than that in normal observation to reduce the difference in overall light amount between normal observation (first mode) and infrared observation (second mode), making it difficult for the surgeon to perceive the change in light. If this dimming results in overexposure, the control unit 15 may adjust the exposure by controlling the shutter speed of the imaging unit 22.

[0045] Furthermore, in the case of a medical observation system that includes an optical microscope rather than an exoscope, an imaging unit is placed in the eyepiece, and the image captured by this imaging unit is displayed on the display unit for observation by a medical professional such as a doctor. In this case, the change in color of the light irradiated on the subject H during normal observation (first mode) and infrared observation (second mode) is reduced in the image captured by the imaging unit, so normal observation and infrared observation can be performed simultaneously without interfering with the surgeon's work.

[0046] (Variation) Next, an exoscopic observation system 1A according to a modified example will be described. Fig. 4 is a schematic diagram showing the configuration of the exoscopic observation system according to the modified example. In the exoscopic observation system 1A, a processor 10A includes a light source filter control unit 13A, and a light source device 30A includes a white light source 32A, a switch unit 34A, and a filter 37A. The other components may be the same as those in the embodiment, so they are denoted by the same reference numerals as in the embodiment and will not be described again.

[0047] Under the control of the control unit 15, the light source filter control unit 13A controls the light source device 30A at a timing according to the synchronization signal. The light source filter control unit 13A performs control to alternately repeat in a time series between a first mode in which the white light source irradiates white light and a second mode in which the infrared light source irradiates infrared light and the white light source irradiates light with wavelengths included in the green to blue wavelength band. The light source filter control unit 13A also controls the filter 37A. The light source filter control unit 13A inserts the filter 37A into the optical path of light emitted by the white light source 32A during infrared observation (second mode), and removes the filter 37A from the optical path of light emitted by the white light source 32A during normal observation (first mode).

[0048] FIG. 5 is a diagram showing the change over time in light irradiated onto a subject by the endoscope observation system shown in FIG. 4. As shown in FIG. 5, the light source filter control unit 13A alternately irradiates white light, which is a superposition of RGB light, and light, which is a superposition of infrared light and light of green to blue wavelengths that has passed through a filter, at a cycle of, for example, 1 / 120 seconds. In this case, the white light source alternately switches the wavelength band of the light to be irradiated between the first mode and the second mode, but irradiates light continuously. In other words, the light of green to blue wavelengths that has passed through a filter is light that is generated when the white light passes through the filter.

[0049] The white light source 32A irradiates the subject with white light. The white light source 32A may be a white light source having a continuous spectrum in the wavelength band of visible light, such as a halogen lamp.

[0050] The switch unit 34A has switches 34Aa and 34d connected to the white light source 32A and the infrared light source 33, respectively, and switches whether or not to supply power to the white light source 32A and the infrared light source 33 under the control of the light source filter control unit 13A.

[0051] The filter 37A is inserted into or removed from the optical path of the light emitted by the white light source 32A, and removes a portion of the light emitted by the white light source 32A during infrared observation (second mode). FIG. 6 is a diagram showing an example of a wavelength band removed by the filter. The line L1 shown in FIG. 6 represents the white light emitted by the white light source 32A, and the line L2 represents the infrared light emitted by the infrared light source 33. The filter 37A removes the R light component of the white light (for example, wavelengths of 600 nm to 700 nm). The filter 37A may be placed anywhere on the optical path of the white light emitted by the white light source 32A, up to just before the imaging unit 22.

[0052] If filter 37A is plate-shaped, light source filter control unit 13A may translate filter 37A to insert or remove filter 37A onto or from the optical path of the light emitted by white light source 32A. If filter 37A is a disk-shaped filter in which filter portions and gaps are alternately arranged along the circumferential direction, light source filter control unit 13A may rotate filter 37A to insert or remove filter 37A onto or from the optical path of the light emitted by white light source 32A.

[0053] According to the modified example described above, the light source device 30A irradiates light of the B light to G light components even when performing infrared observation (second mode), so the change in the color of the light irradiated onto the subject H during normal observation (first mode) and infrared observation (second mode) is reduced, and normal observation and infrared observation can be performed simultaneously without interfering with the surgeon's work.

[0054] 3, the light source filter control unit 13A may set the amount of light emitted by the white light source during infrared observation to be greater than the amount of light emitted by the white light source during normal observation. During infrared observation, a portion of the white light source is removed by the filter 37A, so the overall amount of light is smaller than during normal observation. Therefore, during infrared observation, the amount of light of the B light to G light components may be set to be greater than during normal observation, thereby reducing the difference in the overall amount of light between normal observation (first mode) and infrared observation (second mode), making it difficult for the surgeon to perceive the switching of light.

[0055] The imaging unit 22 may have a configuration including a spectroscopic unit that splits light from the subject H into multiple paths, and multiple sensors arranged on the multiple paths split by the spectroscopic unit. Specifically, the imaging unit 22 may have a spectrometer that reflects light from the subject H in different directions for each wavelength, and multiple sensors having sensitivities corresponding to the wavelengths split by the spectrometer. A color filter may be arranged between the spectroscopic unit and the sensor.

[0056] Although the preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, the technical scope of the present disclosure is not limited to such examples. It is clear that a person skilled in the art of the present disclosure can conceive of various modified or altered examples within the scope of the technical idea described in the claims, and it is understood that these also naturally fall within the technical scope of the present disclosure.

[0057] For example, the processor 10 described in this specification may be configured as a system in which some or all of the components are implemented as separate devices. For example, the processor 10 may be a system including a light source and a control unit implemented by an external device.

[0058] Furthermore, the series of processes performed by each device described in this specification may be realized using software, hardware, or a combination of software and hardware. The programs constituting the software are stored in advance, for example, on a recording medium (non-transitory medium) provided inside or outside each device. Then, each program is loaded into RAM when executed by a computer, and executed by a processor such as a CPU.

[0059] Furthermore, the effects described herein are merely descriptive or exemplary and are not limiting. In other words, the technology according to the present disclosure may achieve other effects that will be apparent to those skilled in the art from the description of this specification, in addition to or in place of the above-described effects.

[0060] The following configurations also fall within the technical scope of the present disclosure. (1) a white light source that emits white light; an infrared light source that emits infrared light; a light source control unit that performs control to alternately repeat in a time series a first mode in which the white light source is caused to irradiate the white light, and a second mode in which the infrared light source is caused to irradiate the infrared light and the white light source is caused to irradiate light of a wavelength included in a green to blue wavelength band; an imaging unit that captures an image of a subject; A medical observation system comprising: (2) The medical observation system according to (1) above, further comprising an image superimposition processing unit that superimposes an infrared light image captured in the second mode on a white light image captured in the first mode. (3) The medical observation system according to (1) or (2), wherein the light source control unit makes the amount of light emitted by the white light source in the second mode greater than the amount of light emitted by the white light source in the first mode. (4) The imaging unit an exoscope that captures an image of the subject from outside the body; The medical observation system according to any one of (1) to (3) above. (5) The imaging unit a color filter having a filter that transmits red light, a filter that transmits green light, and a filter that transmits blue light; a sensor that receives light transmitted through the color filter; The medical observation system according to any one of (1) to (4) above, comprising: (6) The medical observation system according to (5), wherein the imaging unit has a spectroscope that reflects light from the subject in different directions for each wavelength, and a plurality of sensors having sensitivities corresponding to the wavelengths split by the spectroscope. (7) The imaging unit a spectroscopic unit that splits light from the subject into a plurality of paths; a plurality of sensors arranged on a plurality of paths branched by the spectroscopic unit; The medical observation system according to any one of (1) to (6) above, (8) the white light source includes an R light source that emits red light, a G light source that emits green light, and a B light source that emits blue light, The medical observation system according to any one of (1) to (7), wherein the light source control unit causes the R light source, the G light source, and the B light source to irradiate the white light obtained by superimposing RGB light in the first mode, and causes the infrared light source to irradiate the infrared light, and causes the G light source to irradiate the green light, or causes the G light source and the B light source to irradiate the green light and the blue light, respectively, in the second mode. (9) The medical observation system according to any one of (1) to (8), wherein the light source control unit inserts a filter that removes red light into the optical path of the light emitted by the white light source in the second mode, and removes the filter from the optical path of the light emitted by the white light source in the first mode. (10) The filter is plate-shaped, The medical observation system according to (9), wherein the light source control unit translates the filter to insert or remove the filter into or from the optical path of the light emitted by the white light source. (11) the filter is a disk-shaped filter in which filter portions and gap portions are alternately arranged along a circumferential direction, The medical observation system according to (9) or (10), wherein the light source control unit rotates the filter to insert or remove the filter into or from the optical path of the light emitted by the white light source. (12) The medical observation system according to any one of (1) to (11) above, further comprising a control unit that controls a shutter speed of the imaging unit. [Explanation of symbols]

[0061] 1. 1A Endoscopic Observation System 10, 10A processor 11 Clock generation unit 12 Synchronization signal generator 13 Light source control unit 13A Light source filter control section 14 Image overlay processing unit 15 Control Unit 16 Memory section 20 Endoscope Camera 21 Lens 22 Imaging unit 30, 30A light source device 31 Power supply section 32, 32A white light source 32a R light source 32b G light source 32c B light source 33 Infrared light source 34, 34A switch section 34a~34d, 34Aa switch 35 Multiplexer 36 Light source aperture 37A filter H Subject 40 Display section

Claims

1. a white light source that emits white light; an infrared light source that emits infrared light; a light source control unit that performs control to alternately and periodically repeat in a time series a first mode in which the white light source is caused to irradiate the white light, and a second mode in which the infrared light source is caused to irradiate the infrared light and the white light source is caused to irradiate light of a wavelength included in a green to blue wavelength band; an imaging unit that captures an image of a subject; A medical observation system comprising:

2. 2. The medical observation system according to claim 1, further comprising an image superimposition processing unit that superimposes an infrared light image captured in the second mode on a white light image captured in the first mode.

3. The medical observation system according to claim 1 , wherein the light source control unit controls the amount of light emitted by the white light source in the second mode to be greater than the amount of light emitted by the white light source in the first mode.

4. The imaging unit an exoscope that captures an image of the subject from outside the body; The medical observation system according to claim 1 .

5. The imaging unit a color filter having a filter that transmits red light, a filter that transmits green light, and a filter that transmits blue light; a sensor that receives light transmitted through the color filter; 2. The medical observation system according to claim 1, comprising:

6. 6. The medical observation system according to claim 5, wherein the imaging unit comprises a spectroscope that reflects light from the subject in different directions for each wavelength, and a plurality of sensors having sensitivities corresponding to the wavelengths split by the spectroscope.

7. The imaging unit a spectroscopic unit that splits light from the subject into a plurality of paths; a plurality of sensors arranged on a plurality of paths branched by the spectroscopic unit; 2. The medical observation system according to claim 1, comprising:

8. the white light source includes an R light source that emits red light, a G light source that emits green light, and a B light source that emits blue light, 2. The medical observation system according to claim 1, wherein the light source control unit, in the first mode, causes the R light source, the G light source, and the B light source to irradiate the white light obtained by superimposing RGB light, and, in the second mode, causes the infrared light source to irradiate the infrared light and the G light source to irradiate the green light or causes the G light source and the B light source to irradiate the green light and the blue light, respectively.

9. 2. The medical observation system according to claim 1, wherein the light source controller inserts a filter that removes red light onto an optical path of the light emitted by the white light source in the second mode, and removes the filter from the optical path of the light emitted by the white light source in the first mode.

10. The filter is plate-shaped, The medical observation system according to claim 9 , wherein the light source control unit translates the filter to insert or remove the filter into or from the optical path of the light emitted by the white light source.

11. the filter is a disk-shaped filter in which filter portions and gap portions are alternately arranged along a circumferential direction, The medical observation system according to claim 9 , wherein the light source control unit rotates the filter to insert or remove the filter into or from the optical path of the light emitted by the white light source.

12. The medical observation system according to claim 1 , further comprising a control unit that controls a shutter speed of the imaging unit.

Images