[go: up one dir, main page]

WO2020217541A1 - Unité de source de lumière - Google Patents

Unité de source de lumière Download PDF

Info

Publication number
WO2020217541A1
WO2020217541A1 PCT/JP2019/018163 JP2019018163W WO2020217541A1 WO 2020217541 A1 WO2020217541 A1 WO 2020217541A1 JP 2019018163 W JP2019018163 W JP 2019018163W WO 2020217541 A1 WO2020217541 A1 WO 2020217541A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
light source
unit
detection unit
emitted
Prior art date
Application number
PCT/JP2019/018163
Other languages
English (en)
Japanese (ja)
Inventor
達 齋藤
悠介 吉田
寛之 高田
清水　正己
Original Assignee
オリンパス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by オリンパス株式会社 filed Critical オリンパス株式会社
Priority to PCT/JP2019/018163 priority Critical patent/WO2020217541A1/fr
Publication of WO2020217541A1 publication Critical patent/WO2020217541A1/fr

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/0655—Control therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
    • A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres

Definitions

  • the present invention relates to a light source unit.
  • an endoscope system has been used for observing the inside of a subject.
  • An endoscope generally inserts a flexible insertion portion having an elongated shape into a subject such as a patient, and illuminates the inside of the subject with illumination light supplied by a light source device from the tip of the insertion portion (for example,). , Patent Document 1).
  • the illumination light is supplied from the light source device to the tip of the insertion portion via the light guide.
  • an internal image is captured by receiving the reflected light of the illumination light at the imaging unit at the tip of the insertion unit.
  • the internal image captured by the imaging unit of the endoscope is displayed on the display of the endoscope system after being subjected to predetermined image processing in the processing device of the endoscope system.
  • a user such as a doctor observes the organ of the subject based on the internal image displayed on the display.
  • FIG. 10 is a partial cross-sectional view showing a schematic configuration of a conventional light source device.
  • the light source device includes a plurality of light sources (first light source 501G, second light source 501B, third light source 501R) that emit light in different wavelength bands, and a first dichroic that bends a part of the light emitted by the first light source 501G.
  • the mirror 502, the second dichroic mirror 503 that bends a part of the light emitted by the second light source 501B, and a part of the light emitted by the first light source 501G are taken in to detect the intensity of the light emitted by the first light source 501G.
  • the first detection unit 504G and the second detection unit 504B that captures a part of the light emitted by the second light source 501B and detects the intensity of the light emitted by the second light source 501B, and the light emitted by the third light source 501R.
  • the first light source 501G emits light of, for example, 450 nm to 600 nm.
  • the second light source 501B emits light of, for example, 430 nm to 520 nm.
  • the third light source 501R emits light of, for example, 580 nm to 670 nm.
  • the first dichroic mirror 502 reflects light of, for example, 600 nm or less, and transmits light having a wavelength larger than 600 nm.
  • the second dichroic mirror 503 reflects light having a wavelength of, for example, 500 nm or less, and transmits light having a wavelength larger than 500 nm.
  • a portion of the light L B of the second light source 501B is emitted is folded on the second dichroic mirror 503. Also, part of the light L G of the first light source 501G is emitted is folded on the first dichroic mirror 502.
  • the light L R of the third light source 501R is emitted passes through the first dichroic mirror 502 and the second dichroic mirror 503,.
  • the light L R that has passed through the first dichroic mirror 502 mixes with the light L G that is bent by the first dichroic mirror 502.
  • Light L GR was mixed and the light L R and the light L G passes through the second dichroic mirror 503, mixes with the light L B.
  • a light L GR was mixed and the light L R and the light L G, light mix of the light L B is the white light L W becomes incident on the light guide.
  • the second dichroic mirror 503 transmits a part of the light emitted by the second light source 501B.
  • the second dichroic mirror 503 among the light emitted by the second light source 501B, light larger than 500 nm and 520 nm or less is transmitted.
  • the light transmitted through the second dichroic mirror 503 reaches the inner wall of the housing 505 and is reflected by the wall surface.
  • the light reflected by the wall surface passes through the second dichroic mirror 503 again and is incident on the second light source 501B.
  • a part of the light emitted by the third light source 501R specifically, the light of 580 nm or more and 600 nm or less is reflected by the first dichroic mirror 502, passes through the wall surface of the housing 505, and is incident on the first dichroic mirror 502 again. To do.
  • the light incident on the first dichroic mirror 502 is reflected by the first dichroic mirror 502 and is incident on the third light source 501R.
  • reflection occurs on the surface of the light source.
  • the amount of the reflected light is also detected, which may reduce the accuracy of the detection result.
  • the first dichroic mirror 502 is a part of the light first light source 501G is emitted, transmitted part of the light of a wavelength within the reflection band of interest (light L G ').
  • Light L G ' is transmitted through the first dichroic mirror 502 and reaches the wall surface of the housing 505.
  • Light L RG light L G ' is reflected by the wall surface is incident on the first dichroic mirror 502 again. At this time, the light L RG is reflected by the first dichroic mirror 502 or passes through the first dichroic mirror 502.
  • a part of the light L RG reflected on the first dichroic mirror 502 is incident on the third light source 501R.
  • the other part of the light L RG transmitted through the first dichroic mirror 502 is incident on the first light source 501G.
  • the second dichroic mirror 503, a portion of the light second light source 501B is emitted, transmitted part of the light of a wavelength within the reflection band of interest (light L B ').
  • Light L B ' is transmitted through the second dichroic mirror 503, and reaches the wall surface of the housing 505, it is reflected by the wall surface.
  • a part of the light L R B whose light L B'is reflected on the wall surface passes through the second dichroic mirror 503 again and is incident on the second light source 501 B.
  • the light L RB is incident on the first light source 501G. Due to the reflection or transmission of light, for example, the light of the first light source 501G or the light of the second light source 501B is incident on the first light source 501G.
  • the second dichroic mirror 503 reflects the 450nm or 500nm or less of light among the light L GR (light L GR ').
  • the light (light L GR ') reflected by the second dichroic mirror 503 is further reflected by the wall surface of the housing 505, a part of the reflected light L R-GR is transmitted through the second dichroic mirror 503. Then, it may be incident on the second light source 501B. Therefore, in addition to the light of the second light source 501B, the light of the first light source 501G and the light of the third light source 501R may be incident on the second light source 501B. Even when light in a wavelength band different from the light emitted by the light source is incident, the accuracy of the detection result is lowered.
  • the present invention has been made in view of the above, and an object of the present invention is to provide a light source unit capable of detecting the intensity of light emitted by a light source with high accuracy.
  • the light source unit travels in the same direction as the first light source that emits the first light and the first light, and the first light is emitted.
  • a first optical member that reflects a part of the first light emitted from the first light source, and the first light source.
  • a second light path through which the emitted light is passed and a part of the second light emitted from the second light source is connected to a first optical path in which the first light reflected by the first optical member travels.
  • the second optical member that reflects in the direction of traveling in the optical path is different from the part of the first light emitted from the first light source that is reflected by the first optical member.
  • a first detection unit that detects a part and a part of the second light emitted from the second light source that is different from the part reflected by the second optical member are detected.
  • the body includes a reflection control unit provided on an inner wall that intersects a straight line extending an optical path connecting the first light source and the first optical member to control the reflection of the first light.
  • the light source unit according to the present invention is characterized in that, in the above invention, the reflection control unit controls the reflection of the second light.
  • the light source unit according to the present invention is characterized in that, in the above invention, the reflection control unit absorbs light.
  • the light source unit according to the present invention is characterized in that, in the above invention, the reflection suppression unit reflects the first light in an optical path different from the optical path toward the first detection unit.
  • the light source unit according to the present invention is characterized in that, in the above invention, the reflection control unit diffusely reflects light.
  • the light source unit according to the present invention is characterized in that, in the above invention, the first detection unit is arranged at a position different from that on the optical path connecting the first light source to the first optical member.
  • FIG. 1 is a diagram showing a schematic configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing a schematic configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 3 is a partial cross-sectional view showing a configuration of a light source unit of a light source device included in the endoscope system according to the first embodiment of the present invention.
  • FIG. 4 is a partial cross-sectional view showing the configuration of the light source unit corresponding to the cross section taken along the line AA of FIG.
  • FIG. 5 is a partial cross-sectional view showing a configuration of a light source portion of a light source device included in the endoscope system according to the second embodiment of the present invention.
  • FIG. 1 is a diagram showing a schematic configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing a schematic configuration of an endoscope system according to a first embodiment of the present invention
  • FIG. 6 is a partial cross-sectional view showing the configuration of the light source portion of the light source device included in the endoscope system according to the modified example of the second embodiment of the present invention.
  • FIG. 7 is a partial cross-sectional view showing a configuration of a light source portion of a light source device included in the endoscope system according to the third embodiment of the present invention.
  • FIG. 8 is a diagram showing a configuration of a main part of a light source portion of a light source device included in the endoscope system according to the fourth embodiment of the present invention.
  • FIG. 9 is a diagram showing a configuration of a main part of a light source portion of a light source device included in an endoscope system according to a modified example of the fourth embodiment of the present invention.
  • FIG. 10 is a partial cross-sectional view showing a schematic configuration of a conventional light source device.
  • FIG. 1 is a diagram showing a schematic configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 2 is a block diagram showing a schematic configuration of the endoscope system according to the first embodiment.
  • the endoscope system 1 shown in FIGS. 1 and 2 includes an endoscope 2 that captures an image in a subject by inserting a tip into the subject, and illumination light emitted from the tip of the endoscope 2.
  • a processing device 3 and a processing device 3 that have an illumination unit 3a for generating light, perform predetermined signal processing on the imaging signal captured by the endoscope 2, and collectively control the operation of the entire endoscope system 1. It is provided with a display device 4 for displaying an in-vivo image generated by the signal processing of.
  • the endoscope 2 has a flexible and elongated insertion portion 21, an operation portion 22 connected to the base end side of the insertion portion 21 and receiving input of various operation signals, and an insertion portion from the operation unit 22.
  • a universal cord 23 that extends in a direction different from the extending direction of 21 and incorporates various cables that connect to the processing device 3 (including the illumination unit 3a) is provided.
  • the insertion portion 21 is a bendable portion composed of a tip portion 24 having a built-in image pickup element 244 in which pixels that generate a signal by receiving light and performing photoelectric conversion are arranged in a two-dimensional manner, and a plurality of bending pieces. It has a curved portion 25 and a long flexible tube portion 26 connected to the proximal end side of the curved portion 25 and having flexibility.
  • the insertion unit 21 is inserted into the body cavity of the subject and images a subject such as a biological tissue at a position where outside light does not reach by the image sensor 244.
  • the tip portion 24 includes a light guide 241 configured by using a glass fiber or the like and forming a light guide path for light emitted by the illumination portion 3a, an illumination lens 242 provided at the tip of the light guide 241, and optics for condensing light. It has a system 243 and an image pickup element 244 (imaging unit) provided at an imaging position of the optical system 243 and receiving light collected by the optical system 243 and photoelectrically converting it into an electric signal to perform predetermined signal processing. ..
  • the optical system 243 is configured by using one or more lenses, and has an optical zoom function for changing the angle of view and a focus function for changing the focus.
  • the image sensor 244 photoelectrically converts the light from the optical system 243 to generate an electric signal (image signal). Specifically, in the image sensor 244, a plurality of pixels each having a photodiode that stores an electric charge according to the amount of light, a capacitor that converts the electric charge transferred from the photodiode into a voltage level, and the like are arranged in a matrix.
  • the light receiving unit 244a in which each pixel photoelectrically converts the light from the optical system 243 to generate an electric signal, and the electric signal generated by the pixel arbitrarily set as the reading target among the plurality of pixels of the light receiving unit 244a are sequentially read out. It also has a readout unit 244b that outputs as an image signal.
  • the image sensor 244 is realized by using, for example, a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor.
  • the endoscope 2 may include an execution program and a control program for the image sensor 244 to execute various operations, and a memory (not shown) for storing data including identification information of the endoscope 2. ..
  • the identification information includes the unique information (ID) of the endoscope 2, the model year, the spec information, the transmission method, and the like.
  • the operation unit 22 includes a bending knob 221 that bends the curved part 25 in the vertical and horizontal directions, and a treatment tool insertion part 222 that inserts a treatment tool such as a biopsy forceps, an electric knife, and an examination probe into the body cavity of the subject.
  • a treatment tool such as a biopsy forceps, an electric knife, and an examination probe into the body cavity of the subject.
  • the treatment tool inserted from the treatment tool insertion portion 222 is exposed from the opening (not shown) via the treatment tool channel (not shown) of the tip portion 24.
  • the universal cord 23 has at least a built-in light guide 241 and a collective cable 245 that bundles a plurality of signal lines.
  • the collecting cable 245 includes information including a signal line for transmitting an image pickup signal, a signal line for transmitting a drive signal for driving the image pickup element 244, and unique information about the endoscope 2 (image pickup element 244). Includes signal lines for transmitting and receiving.
  • the electric signal is transmitted using the signal line, but the optical signal may be transmitted, or the endoscope 2 and the processing device 3 are connected by wireless communication. Signals may be transmitted between them.
  • FIG. 3 is a partial cross-sectional view showing a configuration of a light source unit of a light source device included in the endoscope system according to the first embodiment of the present invention.
  • FIG. 4 is a partial cross-sectional view showing the configuration of the light source unit corresponding to the cross section taken along the line AA of FIG.
  • the processing device 3 includes an illumination unit 3a and a processor unit 3b.
  • the illumination unit 3a includes a light source unit 300, a light source driver 310, and an illumination control unit 320.
  • the light source unit 300 bends a plurality of light sources (first light source 301G, second light source 301B, third light source 301R) that emit light in different wavelength bands, and a part of the light emitted by the first light source 301G.
  • the intensity of the light emitted by the first light source 301G by taking in a part of the light emitted by the dichroic mirror 302, the second dichroic mirror 303 that bends a part of the light emitted by the second light source 301B, and the light emitted by the first light source 301G.
  • the reflection control member 306 corresponds to a reflection control unit.
  • the first light source 301G is configured by using, for example, a light source that emits light of 450 nm to 600 nm.
  • the second light source 301B is configured by using, for example, a light source that emits light of 430 nm to 520 nm.
  • the third light source 301R is configured by using, for example, a light source that emits light of 580 nm to 670 nm.
  • the optical axis of the first light source 301G and the optical axis of the second light source 301B are parallel.
  • the optical axis of the first light source 301G and the optical axis of the second light source 301B emit light traveling in the same direction between the light source and the dichroic mirror.
  • optical axis of the first light source 301G and the optical axis of the second light source 301B are orthogonal to the optical axis of the third light source 301R.
  • the "optical axis" as used herein refers to an axis through which the portion of the light emitted from the light source having the highest light intensity passes, or an axis through which the center of gravity of the light irradiation region passes.
  • the first light source 301G, the second light source 301B, and the third light source 301R may have an optical system that passes through a light guide to the dichroic mirror in addition to the light source.
  • the first dichroic mirror 302 reflects a part of the light emitted by the first light source 301G, for example, light of 600 nm or less, and passes light having a wavelength larger than 600 nm.
  • the second dichroic mirror 303 reflects a part of the light emitted by the second light source 301B, for example, light having a wavelength of 500 nm or less, and passes light having a wavelength larger than 500 nm.
  • the first detection unit 304G, the second detection unit 304B, and the third detection unit 304R are respectively configured by using a phototransistor, a photodiode, a device in which a photodiode and an amplifier circuit are combined, and the like.
  • the first detection unit 304G, the second detection unit 304B, and the third detection unit 304R convert the received light into an electric signal and output it as a signal value.
  • the signal value generated by each detection unit is output to the lighting control unit 320.
  • First detector 304G, a second detection unit 304B and the third detector 304R is a position away from the optical path of the light emitted from the light source (e.g., an optical path which the light L G progresses as shown in FIG.
  • the detection unit is arranged between the maximum light distribution angle of the light source and the maximum incident angle of the light of the light source in the optical system. The light detected by each detection unit is a part of the light emitted by the light source and is different from the light incident on the dichroic mirror.
  • the reflection control member 306 is made of, for example, a plate material painted in black.
  • the reflection control member 306 is provided on the inner wall of the housing 305, which faces the wall surface on which the first light source 301G (and the second light source 301B) is arranged. Reflecting the control member 306 linearly Q B shown in the straight line (FIG. 3 by extending the optical path connecting the first light source 301G and the first dichroic mirror 302 linearly or second light sources 301B and the second dichroic mirror 303 and the optical path extending connecting, It is installed on the wall surface that intersects with Q G ).
  • the reflection control member 306 is not limited to a plate material painted in black, and can be applied to any member that does not reflect incident light, for example, a member made of black resin or a member whose surface is plated black.
  • the light source unit 300 a part of the light L B of the second light source 301B is emitted it is folded on the second dichroic mirror 303. Also, part of the light L G of the first light source 301G is emitted is folded on the first dichroic mirror 302. On the other hand, the light L R of the third light source 301R is emitted passes through the first dichroic mirror 302, and a second dichroic mirror 303. The light L R that has passed through the first dichroic mirror 302 is mixed with the light L G that is bent by the first dichroic mirror 302. Light L GR was mixed and the light L R and the light L G passes through the second dichroic mirror 303, mixes with the light L B. A light L GR was mixed and the light L R and the light L G, light mix of the light L B is the white light L W becomes incident on the light guide.
  • the second dichroic mirror 303 transmits a part of the light emitted by the second light source 301R.
  • the first dichroic mirror 302 transmits a part of the light emitted by the first light source 301G.
  • Transmitted light L B ', L G' reaches the reflection control member 306, it is absorbed.
  • the dichroic mirror transmitted light L B ', L G' is never again return to the light source is reflected by the inner wall of the housing 305.
  • the light source driver 310 emits light to the light source by supplying a current to each light source under the control of the illumination control unit 320.
  • the lighting control unit 320 controls the amount of power supplied to each light source and controls the drive timing of each light source based on the control signal (dimming signal) from the control unit 33. Further, the lighting control unit 320 outputs the detection value (signal value) input from the first detection unit 304G, the second detection unit 304B, and the third detection unit 304R to the control unit 33, or uses the detection value. Controls the amount of light emitted by the light source.
  • the processor unit 3b includes an image processing unit 31, an input unit 32, a control unit 33, and a storage unit 34.
  • the image processing unit 31 receives image data of illumination light of each color captured by the image sensor 244 from the endoscope 2. When the image processing unit 31 receives analog image data from the endoscope 2, it performs A / D conversion to generate a digital image pickup signal. When the image processing unit 31 receives the image data as an optical signal from the endoscope 2, it performs photoelectric conversion to generate digital image data.
  • the image processing unit 31 performs predetermined image processing on the image data received from the endoscope 2 to generate an image and outputs the image to the display device 4.
  • the predetermined image processing includes simultaneous processing, gradation correction processing, color correction processing, and the like.
  • R image data based on the image data generated by the image pickup element 244 when the light source unit 300 is irradiated with the R illumination light
  • G based on the image data generated by the image pickup element 244 when the light source unit 300 is irradiated with the G illumination light.
  • This is a process of simultaneously synchronizing the image data and the B image data based on the image data generated by the image pickup element 244 when the light source unit 300 irradiates the B illumination light.
  • the gradation correction process is a process for correcting gradation on image data.
  • the color correction process is a process for performing color tone correction on image data.
  • the image processing unit 31 generates a processed imaging signal (hereinafter, also simply referred to as an imaging signal) including the internal image generated by the above-mentioned image processing.
  • the image processing unit 31 may adjust the gain according to the brightness of the image.
  • the image processing unit 31 is configured by using a general-purpose processor such as a CPU (Central Processing Unit) or a dedicated processor such as various arithmetic circuits that execute a specific function such as an ASIC (Application Specific Integrated Circuit).
  • the image processing unit 31 may include a frame memory or the like that holds R image data, G image data, and B image data.
  • the input unit 32 is realized by using a keyboard, a mouse, a switch, and a touch panel, and receives inputs of various signals such as an operation instruction signal for instructing the operation of the endoscope system 1.
  • the input unit 32 may include a switch provided in the operation unit 22 and a portable terminal such as an external tablet computer.
  • the control unit 33 performs drive control of each component including the image sensor 244 and the illumination unit 3a, and input / output control of information to each component.
  • the control unit 33 refers to the control information data for image pickup control (for example, read timing) stored in the storage unit 34, and takes an image as a drive signal via a predetermined signal line included in the collective cable 245. It transmits to the element 244.
  • the control unit 33 is configured by using a general-purpose processor such as a CPU or a dedicated processor such as various arithmetic circuits that execute a specific function such as an ASIC.
  • the storage unit 34 stores data including various programs for operating the endoscope system 1 and various parameters necessary for the operation of the endoscope system 1.
  • the storage unit 34 stores the identification information of the processing device 3.
  • the identification information includes unique information (ID) of the processing device 3, year and specification information, and the like.
  • the storage unit 34 stores various programs including an image acquisition processing program for executing the image acquisition processing method of the processing device 3.
  • Various programs can be recorded on a computer-readable recording medium such as a hard disk, flash memory, CD-ROM, DVD-ROM, or flexible disk and widely distributed.
  • the various programs described above can also be acquired by downloading them via a communication network.
  • the communication network referred to here is realized by, for example, an existing public line network, LAN (Local Area Network), WAN (Wide Area Network), etc., and may be wired or wireless.
  • the storage unit 34 having the above configuration is realized by using a ROM (Read Only Memory) in which various programs and the like are pre-installed, and a RAM, a hard disk, and the like that store calculation parameters and data of each process.
  • ROM Read Only Memory
  • the display device 4 displays a display image corresponding to the image signal received from the processing device 3 (image processing unit 31) via the video cable.
  • the display device 4 is configured by using a monitor such as a liquid crystal or an organic EL (Electro Luminescence).
  • the light emitted from the light source, dichroic mirrors and transmitted light (e.g., L B ', L G') is absorbed and reaches the reflection control member 306.
  • the dichroic optical mirror has been transmitted through the L B ', L G' is, because never again return to the light source is reflected by the inner wall of the casing 305, light reflected by the inner wall of the housing 305 It does not enter the detection unit via a light source or the like.
  • the intensity of the light emitted by the light source can be detected with high accuracy.
  • FIG. 5 is a partial cross-sectional view showing a configuration of a light source portion of a light source device included in the endoscope system according to the second embodiment of the present invention.
  • the endoscope system according to the second embodiment has the same configuration except that the light source unit 300 of the endoscope system 1 described above is changed to the light source unit 300A.
  • the light source unit 300A having a configuration different from that of the first embodiment will be described.
  • the light source unit 300A has a plurality of light sources (first light source 301G, second light source 301B, third light source 301R) that emit light in different wavelength bands, and a first light source that bends a part of the light emitted by the first light source 301G.
  • the intensity of the light emitted by the first light source 301G by taking in a part of the light emitted by the dichroic mirror 302, the second dichroic mirror 303 that bends a part of the light emitted by the second light source 301B, and the light emitted by the first light source 301G.
  • the first reflection control member 308G and the second reflection control member 308B correspond to the reflection control unit.
  • a reflection control member having a configuration different from that of the first embodiment will be described.
  • the first reflection control member 308G and the second reflection control member 308B include, for example, a mirror that totally reflects light.
  • the first reflection control member 308G and the second reflection control member 308B are provided on the inner wall of the housing 305 on the wall surface side facing the wall surface on which the first light source 301G and the second light source 301B are arranged.
  • the first reflection control member 308G is an optical path of light emitted from the first light source 301G, and is provided on the optical path passing through the first dichroic mirror 302.
  • the second reflection control member 308B is an optical path of light emitted from the second light source 301B, and is provided on the optical path passing through the second dichroic mirror 303. None of the first light source 301G, the second light source 301B, and the third light source 301R are arranged in the optical path after the light reflected by the first reflection control member 308G and the second reflection control member 308B.
  • Light L B ' is transmitted through the second dichroic mirror 303, is reflected by the second reflecting control member 308B (arrow L B'' in Figure 5).
  • the optical path of the light reflected by the second reflection control member 308B is an optical path different from the optical path toward the light source.
  • the light L G ' is transmitted through the first dichroic mirror 302, it is reflected on the first reflecting control member 308G (arrow L G'' in Figure 5).
  • the dichroic mirror transmitted light L B ', L G' is never again return to the light source is reflected by the inner wall of the housing 305.
  • the light emitted from the light source, dichroic light transmitted through the dichroic mirror (e.g., L B ', L G') is, the optical path is reflected on the first reflecting control member 308G and the second reflecting control member 308B Changes.
  • the dichroic optical mirror has been transmitted through the L B ', L G' is, because never again return to the light source is reflected by the inner wall of the casing 305, light reflected by the inner wall of the housing 305 It does not enter the detection unit via a light source or the like.
  • the intensity of the light emitted by the light source can be detected with high accuracy.
  • FIG. 5 is a partial cross-sectional view showing a configuration of a light source unit of a light source device included in an endoscope system according to a modified example of the second embodiment of the present invention.
  • the endoscope system according to this modification has the same configuration except that the light source unit 300 of the endoscope system 1 described above is changed to the light source unit 300B.
  • the light source unit 300B having a configuration different from that of the first embodiment will be described.
  • the light source unit 300B has a plurality of light sources (first light source 301G, second light source 301B, third light source 301R) that emit light in different wavelength bands, and a first light source that bends a part of the light emitted by the first light source 301G.
  • the intensity of the light emitted by the first light source 301G by taking in a part of the light emitted by the dichroic mirror 302, the second dichroic mirror 303 that bends a part of the light emitted by the second light source 301B, and the light emitted by the first light source 301G.
  • the first reflection control unit 308G'and the second reflection control unit 308B' correspond to the reflection control unit.
  • a reflection control member having a configuration different from that of the second embodiment will be described.
  • the first reflection control unit 308G'and the second reflection control unit 308B' are provided integrally with the housing 305, for example, and have a shape protruding with respect to other parts of the inner wall of the housing 305 to emit light. It has an inclined surface that reflects in a predetermined direction.
  • the first reflection control unit 308G'and the second reflection control unit 308B' are provided on the inner wall of the housing 305 on the wall surface side facing the wall surface on which the first light source 301G and the second light source 301B are arranged.
  • the first reflection control unit 308G' is an optical path of light emitted from the first light source 301G, and is provided on the optical path passing through the first dichroic mirror 302.
  • the second reflection control unit 308B' is an optical path of light emitted from the second light source 301B, and is provided on the optical path passing through the second dichroic mirror 303. None of the first light source 301G, the second light source 301B, and the third light source 301R are arranged in the optical path after the light reflected by the first reflection control unit 308G'and the second reflection control unit 308R'.
  • Light L B ' is transmitted through the second dichroic mirror 303, it is reflected by the second reflecting controller 308B' (arrow L B'' in FIG. 6).
  • the optical path of the light reflected by the second reflection control unit 308B' is an optical path different from the optical path toward the light source.
  • the light L G ' is transmitted through the first dichroic mirror 302, (arrow L G'' in FIG. 6) which is reflected on the first reflecting controller 308G'.
  • the dichroic mirror transmitted light L B ', L G' is never again return to the light source is reflected by the inner wall of the housing 305.
  • dichroic light transmitted through the dichroic mirror (e.g., L B ', L G') is, the optical path is reflected on the first reflecting controller 308G' and second reflective controller 308B' Changes.
  • the dichroic optical mirror has been transmitted through the L B ', L G' is, because never again return to the light source is reflected by the inner wall of the casing 305, light reflected by the inner wall of the housing 305 is a light source such as It does not enter the detection unit via.
  • the intensity of the light emitted by the light source can be detected with high accuracy.
  • FIG. 7 is a partial cross-sectional view showing a configuration of a light source portion of a light source device included in the endoscope system according to the third embodiment of the present invention.
  • the endoscope system according to the third embodiment has the same configuration except that the light source unit 300 of the endoscope system 1 described above is changed to the light source unit 300C.
  • the light source unit 300C having a configuration different from that of the first embodiment will be described.
  • the light source unit 300C has a plurality of light sources (first light source 301G, second light source 301B, third light source 301R) that emit light in different wavelength bands, and a first light source that bends a part of the light emitted by the first light source 301G.
  • the intensity of the light emitted by the first light source 301G by taking in a part of the light emitted by the dichroic mirror 302, the second dichroic mirror 303 that bends a part of the light emitted by the second light source 301B, and the light emitted by the first light source 301G.
  • a reflection control member having a configuration different from that of the first embodiment will be described.
  • the reflection control unit 309 has, for example, a minute uneven shape formed on the reflection surface.
  • the reflection control unit 309 is formed on the inner wall of the housing 305, which faces the wall surface on which the first light source 301G and the second light source 301B are arranged. In other words, the reflection control unit 309 is provided on the wall surface intersecting the optical axes of the first light source 301G and the second light source 301B.
  • the light emitted from the light source, dichroic mirrors and transmitted light (e.g., L B ', L G') is, the optical path is changed by diffused reflection by the reflection control unit 309.
  • the dichroic optical mirror has been transmitted through the L B ', L G' is, because never again return to the light source is reflected by the inner wall of the casing 305, light reflected by the inner wall of the housing 305 It does not enter the detection unit via a light source or the like.
  • the intensity of the light emitted by the light source can be detected with high accuracy.
  • FIG. 8 is a diagram showing a configuration of a main part of a light source portion of a light source device included in the endoscope system according to the fourth embodiment of the present invention.
  • the configuration of the first light source 301G will be described as an example of the light source.
  • the same configuration can be applied to the second light source 301B and the third light source 301R.
  • the first light source 301G has an LED chip 301a and a holding unit 301b that holds the LED chip 301a.
  • the holding portion 301b has a bottomed recess 301c for accommodating the LED chip 301a.
  • a notch 301d is formed at the open end of the recess.
  • the cutout portion 301d is arranged at an end portion located on the side far from the first detection unit 304G when the light source unit is assembled (see FIG. 8).
  • First detector 304G is receiving a part of the light emitted from the LED chip 301a is emitted (light L G indicated by the broken line arrows in FIG. 8).
  • the light from the LED chip 301a is reflected at the open end (end portion 301e) of the recess 301c, so that the reflected light is transmitted to the first detection unit 304G. In some cases, it was incident (light L N indicated by a dotted arrow).
  • the fourth embodiment by forming the notch 301d and arranging it on the side far from the second detection unit 304G, the light from the LED chip 301a is reflected and the first detection unit 304G. Incident is suppressed.
  • FIG. 9 is a diagram showing a configuration of a main part of a light source portion of a light source device included in an endoscope system according to a modified example of the fourth embodiment of the present invention.
  • the configuration of the first light source 301G will be described as an example of the light source, as in the case of the fourth embodiment described above.
  • the same configuration can be applied to the second light source 301B and the third light source 301R.
  • the first light source 301G has an LED chip 301a and a holding unit 301b that holds the LED chip 301a.
  • the antireflection portion 301f is provided at the end portion (end portion 301e) located on the side far from the first detection unit 304G.
  • the antireflection portion 310f is formed by using a paint that absorbs light, a member that does not reflect incident light, for example, a member made of the black resin described above, or a member whose surface is plated black.
  • the antireflection unit 310f is provided on the inner peripheral surface of the recess 301c on the side opposite to the first detection unit 304G side, and is the light from the LED chip 301a that is directly incident on the first detection unit 304G. absorbing the (light L N 'shown by a dotted line arrow) different light.
  • the antireflection portion 301f in the recess 301c the light from the LED chip 301a is suppressed from being reflected and incident on the first detection unit 304G.
  • the lighting unit 3a is integrated with the processing device 3
  • the lighting unit 3a and the processing device 3 are separate bodies, for example, the processing device 3.
  • a light source unit 300 and a lighting control unit 320 may be provided externally.
  • the reflection control unit may be provided at least in the irradiation region of the light that has passed through the dichroic mirror.
  • the reflection control unit may be configured to control the reflection of the light passing through the.
  • a reflection control unit is provided in the irradiation region of the light passing through the dichroic mirror to be controlled.
  • the endoscope system according to the present invention is an endoscope system 1 using a flexible endoscope 2 whose observation target is a living tissue in a subject or the like.
  • a rigid endoscope an industrial endoscope for observing the characteristics of a material
  • a fiberscope an optical endoscope
  • other optical endoscopes with a camera head connected to the eyepiece are used. It can also be applied to the endoscopic system used.
  • the light source unit according to the present invention is useful for detecting the intensity of the light emitted by the light source with high accuracy.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)

Abstract

Une unité de source de lumière selon la présente invention comprend : une première source de lumière qui émet une première lumière ; une seconde source de lumière qui émet une seconde lumière se déplaçant dans la même direction que la première lumière ; un premier élément optique qui réfléchit une partie de la première lumière émise par la première source de lumière ; un second élément optique qui réfléchit une partie de la seconde lumière émise par la seconde source de lumière dans une direction dans laquelle la partie de la seconde lumière se déplace dans un second trajet optique qui est continu avec un premier trajet optique dans lequel la première lumière réfléchie par le premier élément optique se déplace ; une première unité de détection qui détecte une partie de la première lumière émise par la première source de lumière, qui est différente de la partie de la première lumière réfléchie par le premier élément optique ; une seconde unité de détection qui détecte une partie de la seconde lumière émise par la seconde source de lumière, qui est différente de la partie de la seconde lumière réfléchie par le second élément optique ; un boîtier qui reçoit la première source de lumière, la seconde source de lumière, le premier élément optique, le second élément optique, la première unité de détection et la seconde unité de détection ; et une unité de commande de réflexion qui est disposée dans une paroi interne croisant une ligne droite s'étendant à partir d'un trajet optique reliant la première source de lumière et le premier élément optique et commande la réflexion de la première lumière.
PCT/JP2019/018163 2019-04-26 2019-04-26 Unité de source de lumière WO2020217541A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/018163 WO2020217541A1 (fr) 2019-04-26 2019-04-26 Unité de source de lumière

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/018163 WO2020217541A1 (fr) 2019-04-26 2019-04-26 Unité de source de lumière

Publications (1)

Publication Number Publication Date
WO2020217541A1 true WO2020217541A1 (fr) 2020-10-29

Family

ID=72941416

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2019/018163 WO2020217541A1 (fr) 2019-04-26 2019-04-26 Unité de source de lumière

Country Status (1)

Country Link
WO (1) WO2020217541A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022168942A1 (fr) * 2021-02-05 2022-08-11 古河電気工業株式会社 Dispositif optique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001154067A (ja) * 1999-12-01 2001-06-08 Nec Corp 光導波路を使用した光送受信モジュール
WO2016170823A1 (fr) * 2015-04-24 2016-10-27 オリンパス株式会社 Dispositif de source de lumière
WO2017187830A1 (fr) * 2016-04-27 2017-11-02 オリンパス株式会社 Dispositif de refroidissement et dispositif de source de lumière destinés à un endoscope
WO2018151101A1 (fr) * 2017-02-14 2018-08-23 古河電気工業株式会社 Module optique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001154067A (ja) * 1999-12-01 2001-06-08 Nec Corp 光導波路を使用した光送受信モジュール
WO2016170823A1 (fr) * 2015-04-24 2016-10-27 オリンパス株式会社 Dispositif de source de lumière
WO2017187830A1 (fr) * 2016-04-27 2017-11-02 オリンパス株式会社 Dispositif de refroidissement et dispositif de source de lumière destinés à un endoscope
WO2018151101A1 (fr) * 2017-02-14 2018-08-23 古河電気工業株式会社 Module optique

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022168942A1 (fr) * 2021-02-05 2022-08-11 古河電気工業株式会社 Dispositif optique
JP7654416B2 (ja) 2021-02-05 2025-04-01 古河電気工業株式会社 光学装置

Similar Documents

Publication Publication Date Title
CN105792727B (zh) 内窥镜装置
JP6329715B1 (ja) 内視鏡システムおよび内視鏡
US9414739B2 (en) Imaging apparatus for controlling fluorescence imaging in divided imaging surface
US7476197B2 (en) Scanned beam imagers and endoscopes utilizing multiple light collectors
JP2010012102A (ja) 光源装置及びこの光源装置を用いた内視鏡装置
EP3085299A1 (fr) Dispositif endoscopique
US20190387964A1 (en) Endoscope apparatus
WO2020178962A1 (fr) Système d'endoscope et dispositif de traitement d'image
US20210290035A1 (en) Medical control device and medical observation system
US10462440B2 (en) Image processing apparatus
JP6937902B2 (ja) 内視鏡システム
US10188266B2 (en) Endoscopic imaging device for reducing data amount of image signal
WO2020217541A1 (fr) Unité de source de lumière
US20220378284A1 (en) Endoscope light source device and light quantity adjusting method
JP2017123997A (ja) 撮像システムおよび処理装置
KR20200021708A (ko) 가시광 및 근적외선 광을 모두 가시화할 수 있는 내시경 장치
JP5948191B2 (ja) 内視鏡用プローブ装置及び内視鏡システム
CN113573626B (zh) 光源以及内窥镜系统
JP7213245B2 (ja) 内視鏡用光源装置、内視鏡用光源の制御方法および内視鏡システム
US20190290113A1 (en) Endoscope apparatus and medical imaging device
WO2022208629A1 (fr) Dispositif d'observation de fluorescence, système de photo-immunothérapie et endoscope à fluorescence
JP6663692B2 (ja) 画像処理装置、内視鏡システム、及び画像処理装置の制御方法
US20230389777A1 (en) Sterile Calibrating Cap and Methods for Using the Same on an Endoscope
WO2021100186A1 (fr) Dispositif de source de lumière pour un endoscope
WO2025068887A1 (fr) Ensembles optiques pour visualisation stéréo endoscopique

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19925863

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19925863

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP