CN106073691A - Light source device for endoscope and endoscopic system - Google Patents
Light source device for endoscope and endoscopic system Download PDFInfo
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- CN106073691A CN106073691A CN201610269213.3A CN201610269213A CN106073691A CN 106073691 A CN106073691 A CN 106073691A CN 201610269213 A CN201610269213 A CN 201610269213A CN 106073691 A CN106073691 A CN 106073691A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—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
- A61B1/0638—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 providing two or more wavelengths
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00163—Optical arrangements
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
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- 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
- A61B1/0661—Endoscope light sources
- A61B1/0684—Endoscope light sources using light emitting diodes [LED]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—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
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Abstract
The present invention provides light source device for endoscope and endoscopic system.Addition type light source possesses: red light source, and it sends the 1st red light (LR1)；Green light source, it sends the green light (LG) that wavelength band extends to the long wavelength side of the peak wavelength relative to the 1st red light；And the 1st dichroic mirror (DM).1st red light (LR1) incides a face of the 1st dichroic mirror (DM), and green light (LG) incides another face of the 1st dichroic mirror (DM).1st dichroic mirror (DM) possesses the band limiting characteristic of the light of the wavelength band between reflection the 1st threshold value (T1A) and the 2nd threshold value (T1B).1st threshold value (T1A) is between the peak wavelength and the peak wavelength of green light (LG) of the 1st red light (LR1).2nd threshold value (T1B) is at the long wavelength side of the peak wavelength relative to the 1st red light (LR1).1DM extracts and guides the light path to the 1st red light (LR1) relative to the 2nd red light (LR2) of the wavelength components that the 2nd threshold value (T1B) is long wavelength.
Description
Technical field
The present invention relates to light source device for endoscope and the endoscopic system possessing addition type light source.
Background technology
In the medical field, be widely used possess light source device for endoscope (hereinafter, referred to as light supply apparatus), in peep
Mirror and the endoscopic system of processor device and diagnose.The illumination light produced by light supply apparatus is by endoscope
Photoconduction and be irradiated to the object of observation from forward end section of endoscope.It is built-in with imaging apparatus at forward end section of endoscope,
The return light returned from the object of observation is received by imaging apparatus.The processor device picture signal to being obtained by imaging apparatus
Carry out image procossing and generate observation image.
As light supply apparatus, the widely available broad band light (white being sent white by the discharge-type light source of xenon lamp etc.
Light) device.In recent years, discharge-type light source is replaced gradually to use light emitting diode (LED:Light Emitting
Etc. Diode) semiconductor light source.
As the light supply apparatus using this semiconductor light source, it is known that will be from red LED, green LED and blueness
Each light that LED sends is added and generates the light source (hereinafter referred to as addition type light source) of the addition type of white light.In phase
Add in type light source, use the quasiconductor of red LED (Light Emitting Diode), green LED, blue led etc.
Light source.Utilize dichroic mirror that the light from each light source is added (for example, referring to No. 5654167 publication of patent).
Further, in endoscopic system, according to the purpose of diagnosis, the object of observation is spread Gentian Violet, indigo carmine
Deng pigment, and shot the object of observation dyeed by pigment by imaging apparatus.Such as, as the object of observation
Large intestine spreads Gentian Violet, thus pathological changes is colored as bluish violet, the most clearly manifests the appearance on surface.According to this sample
The pattern of son, it is judged that the character (optimum or pernicious) of pathological changes.
About the dispersion zone of Gentian Violet, in the case of employing broadband light source, it is observed to bluish violet, and makes
In the case of addition type light source, color changes, and hue shift is to blue side.This is because, as addition
The wavelength band of the red LED of the red light source of type light source is narrow, the photograph of the light amount ratio broadband light source of long wavelength side
Mingguang City is few.Particularly, Gentian Violet is at short wavelength's frequency band of about below 500nm and the long wavelength of about more than 650nm frequency
Band possesses certain above reflectance, and includes the ripple of this long wavelength's frequency band in the illumination light of addition type light source hardly
Long component, thus red color is not enough, causes tone to change.
So, the doctor that custom is observed by the conventional endoscopic system with broadband light source is by including possessing
In the case of the endoscopic system of the light supply apparatus of addition type light source is observed, the pigment of Gentian Violet etc. may be dissipated
The colour recognition in cloth region is the most blue color.
Summary of the invention
It is an object of the invention to provide a kind of face of pigment dispersion zone that can will use in the case of addition type light source
Color is incorporated into the light source device for endoscope of the color using the pigment dispersion zone in the case of broadband light source and interior
Endoscope system.
In order to achieve the above object, the light source device for endoscope of the present invention includes: red light source, and it sends the 1st
Red light；Green light source, it sends green light, and the wavelength band of this green light is to the peak value relative to the 1st red light
The long wavelength side extension of wavelength；1st light path merging portion, it possesses the 1st threshold value, by green light relative to the 1st
Threshold value be light path and the 1st red light of the wavelength components of short wavelength be the wavelength components of long wavelength relative to the 1st threshold value
Light path merge, wherein, the 1st threshold value peak wavelength and the green light of the 1st red light peak wavelength it
Between；And the 2nd light path merging portion, it extracts the 2nd red light from green light and guides and close to by the 1st light path merging portion
And the light path obtained, the 2nd red light is to be the wavelength components of long wavelength relative to the 2nd threshold value, and the 2nd threshold value exists
Long wavelength side relative to the peak wavelength of the 1st red light.
Being preferably, the 1st light path merging portion and the 2nd light path merging portion are made up of a dichroic mirror, and this dichroic mirror possesses to be made
The luminous reflectance of the wavelength band between the 1st threshold value and the 2nd threshold value or the band limiting characteristic passed through.At this dichroic mirror
One incident 1st red light in face, in another face incidence green light.
Being preferably, the 2nd threshold value is in the range of 640nm～670nm.
Being preferably, it is the wavelength of long wavelength relative to the 2nd threshold value that the light quantity of the 2nd red light is more than in the 1st red light
The light quantity of composition.
Being preferably, red light source is made up of light emitting diode, and green light source is by excitation source and the reception producing exciting light
The fluorophor of exciting light and luminescence is constituted.Being preferably, green light possesses the wavelength components of 500nm～690nm.
It is preferably, including: blue-light source, it sends blue light；And the 3rd light path merging portion, it possesses the 3rd threshold value,
And by the light path relative to the wavelength components that the 3rd threshold value is short wavelength of blue light and green light relative to the 3rd threshold value
Light path for the wavelength components of long wavelength merges, wherein, the 3rd threshold value at the peak wavelength of blue light with green
Between the peak wavelength of light.
It is preferably, including: purple light source, it sends purple light；And the 4th light path merging portion, it possesses the 4th threshold value,
And by the light path relative to the wavelength components that the 4th threshold value is short wavelength of purple light and blue light relative to the 4th threshold value
Light path for the wavelength components of long wavelength merges, wherein, the 4th threshold value at the peak wavelength of purple light with blue
Between the peak wavelength of light.
The endoscopic system of the present invention includes: above-mentioned light source device for endoscope；Imaging apparatus, the object of observation is entered by it
Row shooting, the picture signal that output is colored, wherein, this object of observation is sent by light source device for endoscope
Illumination light is illuminated；Observing image production part, it carries out image procossing to picture signal and generates observation image；
And light emission ratio configuration part, the ratio of the luminous intensity of its setting red light source and green light source.
Be preferably, light emission ratio configuration part set luminous intensity ratio so that the following two kinds color of the object of observation it
Between aberration be that below certain, wherein, a kind of color of the object of observation is to include the green light frequency band of green light
With include that the broad band light possessing continuous print frequency spectrum in the red light frequency band of the 1st red light and the 2nd red light is illuminated
And obtain, the another kind of color of the object of observation is to be illuminated by the illumination light from light source device for endoscope and obtain
Arrive.In this case, aberration represents that the distance in Lab space, light emission ratio configuration part set and makes distance as 6
The ratio of following luminous intensity.
Being preferably, including pigment distribution portion, this pigment distribution portion spreads Gentian Violet to the object of observation.
Invention effect
Make in accordance with the invention it is possible to the color of the pigment dispersion zone in the case of using addition type light source is incorporated into
Color by the pigment dispersion zone in the case of broadband light source.
Accompanying drawing explanation
Fig. 1 is the outside drawing of endoscopic system.
Fig. 2 is the block diagram of the function representing endoscopic system.
Fig. 3 is the figure of the dichroism representing chromatic filter.
Fig. 4 is the figure of the structure representing addition type light source.
Fig. 5 is the curve chart of each luminous intensity frequency spectrum representing purple light, blue light, green light, the 1st red light.
Fig. 6 is the figure of the structure representing G-LED.
Fig. 7 is the curve chart of the optical characteristics representing the 1st dichroic mirror.
Fig. 8 is the curve chart of the optical characteristics representing the 2nd dichroic mirror.
Fig. 9 is the curve chart of the optical characteristics representing the 3rd dichroic mirror.
Figure 10 is the curve chart of the optical characteristics representing infrared cutoff filter.
(A) of Figure 11 is the figure of the luminous intensity frequency spectrum representing illumination light, and (B) of Figure 11 is to represent that the light splitting of pigment is anti-
The figure of radio-frequency spectrum, (C) of Figure 11 is the figure of the luminous intensity frequency spectrum of the illumination light representing broadband light source.
(A) of Figure 12 is the curve chart of the luminous intensity representing R-LED and the relation of aberration, and (B) of Figure 12 is table
Show the luminous intensity of R-LED and the figure of the relation of the amount of gain of relative red image signal.
Figure 13 is the figure of the variation put in order representing the 1st～the 3rd dichroic mirror.
Figure 14 is the figure of the structure of the addition type light source representing the 2nd embodiment.
Figure 15 is the curve chart of the optical characteristics of the 1st dichroic mirror representing the 2nd embodiment.
Figure 16 is the curve chart of the optical characteristics of the 2nd dichroic mirror representing the 2nd embodiment.
Detailed description of the invention
[the 1st embodiment]
In Fig. 1, endoscopic system 10 possesses: endoscope 12, light source device for endoscope (fill hereinafter referred to as light source
Put) 14, processor device 16, monitor 18, bench board 19.Endoscope 12 utilizes versatility code 25 and and light source
Device 14 realizes optics and connects, and electrically connects with processor device 16.
Endoscope 12 possesses: the insertion section 12a that is inserted in subject, the end section of being located at insertion section 12a
Operating portion 12b, it is located at the bending section 12c of the front of insertion section 12a, is located at the front end of the front end of bending section 12c
Portion 12d.By operating the angle knob 12e of operating portion 12b, thus bending section 12c is curved action.With being somebody's turn to do
Flexure operation, leading section 12d is towards desired direction.Further, at operating portion 12b in addition to angle knob 12e,
It is additionally provided with zoom operation portion 13 etc..
Processor device 16 electrically connects with monitor 18 and bench board 19.Monitor 18 is output and shows that image is believed
The display part of breath etc..Bench board 19 act as the user interface of the input operation of receive capabilities setting etc..It addition,
Processor device 16 can also the record portion (not shown) of outside of linkage record image information etc..
Further, it is provided with pliers passage 20 in endoscope 12.For pigment being spread to the diffusion tube 22 of the object of observation
It is inserted in pliers passage 20.Diffusion tube 22 is inserted into pliers passage from the pliers entrance 20a being located at operating portion 12b
20.At least front end 22a of diffusion tube 22 exposes from the pliers outlet 20b of the leading section 12d being formed at endoscope 12.
The syringe 24 of the pigment agent being filled with Gentian Violet, indigo carmine etc. is connected to the end side of diffusion tube 22.
The user of doctor etc. by operating syringe 24 from the front end 22a of diffusion tube 22 to the object of observation with vaporific distribution color
Element.It addition, " the pigment distribution portion " of the present invention is corresponding to including diffusion tube 22 and the structure of syringe 24.
In fig. 2, light supply apparatus 14 possesses: addition type light source 30, light source control portion 31 and light emission ratio set
Portion 32.Addition type light source 30 is driven by light source control portion 31, produces the illumination light of white.From addition type
The light of light source 30 injection is irradiated to subject via the photoconduction 33 being inserted in the 12a of insertion section and illuminating lens 35
The interior object of observation.
Photoconduction 33 is built in endoscope 12 and versatility code 25, the illumination light supplied from addition type light source 30 is passed
Till being multicast to the leading section 12d of endoscope 12.It addition, as photoconduction 33, multimode fibre can be used.As an example,
Core diameter about 105 μm, cladding diameter about 125 μm, a diameter of including crust (protective layer) can be usedThe optical cable of microfine diameter.
It is provided with lamp optical system 34a and image pickup optical system 34b at the leading section 12d of endoscope 12.Illumination light
System 34a has illuminating lens 35.It is irradiated to see via illuminating lens 35 from the illumination light of photoconduction 33 injection
Examine object.Image pickup optical system 34b has object lens 36, zoom lens 37 and imaging apparatus 38.From illumination light
The return light of the object of observation incides imaging apparatus 38 via object lens 36 and zoom lens 37.At imaging apparatus 38
On, form the light image of the object of observation.
Zoom lens 37, according to the operation in zoom operation portion 13, move between focal length end and wide-angle side.Do not carrying out
In the case of amplifying observation (when non-amplified is observed), zoom lens 37 are configured at wide-angle side.It is being amplified observation
In the case of, zoom lens 37 move to focal length end from wide-angle side according to the operation in zoom operation portion 13.
Imaging apparatus 38 is synchronous mode primary colors type color sensor, shoots the light image of the object of observation and exports coloured silk
The picture signal of color.As imaging apparatus 38, CMOS (Complementary Metal-Oxide can be used
Semiconductor) type image sensor.
Imaging apparatus 38 possess have the 1st light splitting shown in Fig. 3 through characteristic 38a redness (R) chromatic filter and
There is the 2nd light splitting and through green (G) chromatic filter of characteristic 38b and there is the 3rd light splitting indigo plant through characteristic 38c
Color (B) chromatic filter.Any one chromatic filter it is provided with in each pixel of imaging apparatus 38.That is, shooting
Element 38 possess be provided with the R pixel (red pixel) of R chromatic filter and be provided with the G pixel of G chromatic filter (green
Color pixel) and it is provided with the B pixel (blue pixel) of B chromatic filter, and export the picture signal of RGB form.Should
Picture signal be to each pixel distribution RGB any one color signal, by red image signal,
Green video signal and blue image signal are constituted.It addition, B pixel not only has sensitivity to blue light, and right
Purple (V) light also has sensitivity.
Imaging apparatus 38 possesses correlated double sampling circuit, A/D (Analog to Digital) changer, exports each image
Signal is as digital signal.
Processor device 16 includes: imaging control part 40, acceptance division 41, DSP (Digital Signal Processor:
Digital signal processor) 42, noise reduction portion 43, observe image production part 44, signal of video signal generating unit 45.Shooting
The control portion 40 shooting opportunity to the object of observation that imaging apparatus 38 is carried out and the picture signal from imaging apparatus 38
Output be controlled opportunity.
Acceptance division 41 receives the RGB image signal of the numeral exported from the imaging apparatus 38 of endoscope 12.DSP42
The RGB image signal received is carried out defect correction process, migration processing, gain calibration process, linear matrix
The various signal processing of process, gamma conversion process and demosaicing process etc..
In defect correction processes, the signal of the defect pixel of imaging apparatus 38 is corrected.In migration processing,
From implementing the RGB image signal removal dark current component that defect correction processes, set correct zero level.Increasing
In benefit correction process, the RGB image signal after carrying out migration processing is multiplied by specific gain and adjusts signal
Level.RGB image signal after carrying out gain calibration process is implemented for the linear moment improving color reprodubility
Battle array processes.Afterwards, brightness, chroma are adjusted by gamma conversion process.After having carried out linear matrix process
RGB image signal is implemented demosaicing and is processed (also referred to as isotropization process, synchronization process), to each pixel
Generate the signal of each color of RGB.
Noise reduction portion 43 carries out noise to the RGB image signal being implemented demosaicing process etc. by DSP42
Reduction is processed (process carried out by moving average method, median filter method etc.) and reduces noise.Reduce noise
RGB image signal is imported into observation image production part 44.
Observe image production part 44 the RGB image signal inputted from noise reduction portion 43 is carried out colour switching process,
Color emphasizes that the image procossing of process etc. is emphasized in process, structure, thus generates observation image.In colour switching processes,
RGB image signal is implemented matrix disposal, greyscale transform process and 3-dimensional LUT (look-up table) process etc. of 3 × 3,
Thus carry out colour switching process.The RGB image signal completing colour switching process is carried out color and emphasizes place
Reason.Structure emphasizes to process the process of the structure being the object of observation emphasizing superficial blood vessel, recess patterns etc., to carrying out color
Coloured silk emphasizes that the RGB image signal after processing carries out this structure and emphasizes to process.
The observation image generated by observation image production part 44 is imported into signal of video signal generating unit 45.Signal of video signal is raw
One-tenth portion 45 is transformed into the signal of video signal for being shown to monitor 18 by observing image.Monitor 18 is according to from image
Signal generating unit 45 input signal of video signal and carry out image and show.
In the diagram, addition type light source 30 possesses: R-LED50a, G-LED50b, B-LED50c, V-LED50d,
LED drive division the 51, the 1st～the 4th collimating lens 52a～52d, the 1st～the 3rd dichroic mirror (DM) 55a～55c,
Infrared ray cut off filter 56, collecting lens 59.
Addition type light source 30 is by from each of R-LED50a, G-LED50b, B-LED50c and V-LED50d
The light that light source sends is added and generates the addition type light source of illumination light.In the present embodiment, according to the 1st～
3DM55a～55c and by from light source light be added.
As it is shown in figure 5, R-LED50a is to send peak wavelength to be about 630nm, wavelength band be about 600nm～
The red light source of the red light (hereinafter referred to as the 1st red light LR1) of 650nm.G-LED50b is to send peak value ripple
Long about 530nm, wavelength band is about the green light source of green light LG of 480nm～700nm.B-LED50c
Being to send peak wavelength to be about 460nm, wavelength band is about the blue-light source of the blue light LB of 420nm～480nm.
V-LED50d is to send peak wavelength to be about 405nm, and wavelength band is about the purple light LV of 380nm～420nm
Purple light source.
As shown in Figure 6, in R-LED50a, G-LED50b, B-LED50c and V-LED50d, G-LED50b
Constituted with LED61 and the combination of green-emitting phosphor 62 by as exciting of excitation source.Excite with LED61 raw
The exciting light LE of peak wavelength about 440nm is become to incide green-emitting phosphor 62.Green-emitting phosphor 62 receives and swashs
The incidence of luminous LE and luminous, and produce green light LG.So, G-LED50b possesses green-emitting phosphor 62,
Therefore the wavelength band of green light LG extends to the peak wavelength longer wavelength than the 1st red light LR1 from green area
Side.Being preferably, green light LG at least possesses the wavelength components of 500nm～690nm.
LED drive division 51 drives R-LED50a, G-LED50b, B-LED50c and V-LED50d respectively.
1st～the 4th collimating lens 52a～52d with respectively with R-LED50a, G-LED50b, B-LED50c,
Mode corresponding for V-LED50d configures, and makes the 1st red light LR1, green light LG, blue light LB, purple light LV
The most parallel.Below, by by the 1st～the 4th collimating lens 52a～52d by the 1st red light LR1 of parallelization,
Green light LG, blue light LB, each light path of purple light LV are called the 1st～the 4th light path 57a～57d.
1st light path 57a and the 2nd light path 57b are orthogonal, are configured with 1DM55a at this intersection point.Specifically,
1DM55a is configured to a face and intersects with the 1st light path 57a with the angle of 45 °, another face with the angle of 45 ° with
2nd light path 57b intersects.As it is shown in fig. 7,1DM55a has the 1st threshold value T1A at about 590nm,
There is at about 650nm the 2nd threshold value T1B.1DM55a makes the light transmission that wavelength ratio the 1st threshold value T1A is short, and
The light that reflection wavelength is longer and shorter than the 2nd threshold value T1B than the 1st threshold value T1A.Further, 1DM55a makes wavelength ratio
The light transmission of the 2nd threshold value T1B length.1DM55a has between the 1st threshold value T1A and the 2nd threshold value T1B
The light of wavelength band carries out the band limiting characteristic reflected.
From R-LED50a injection the 1st red light LR1 wavelength components be mostly present in 1DM55a's
Wavelength band between 1st threshold value T1A and the 2nd threshold value T1B, is therefore reflected by 1DM55a.Separately
Outward, from the wavelength band width of green light LG of G-LED50b injection, from green light frequency band to red relative to the 1st
The long wavelength side extension of the peak wavelength (about 630nm) of light LR1, therefore short than the 1st threshold value T1A wavelength components
Through 1DM55a, the wavelength components longer than the 2nd threshold value T1B passes through 1DM55a.Below, by green light
The wavelength components that ratio the 2nd threshold value T1B in LG is long is referred to as the 2nd red light LR2.
So, 1DM55a by green light LG relative to the wavelength components that the 1st threshold value T1A is short wavelength
Light path and the light path relative to the wavelength components that the 1st threshold value T1A is long wavelength of the 1st red light LR1 and green light
The light path relative to the wavelength components (the 2nd red light LR2) that the 2nd threshold value T1B is long wavelength of LG merges.
In the present embodiment, 1DM55a act as " the 1st light path merging portion " and " the 2nd light path of the present invention
Merging portion ".Green light LG is the wavelength components of short wavelength relative to the 1st threshold value T1A by the 1st light path merging portion
Light path and the light path relative to the wavelength components that the 1st threshold value T1A is long wavelength of the 1st red light LR1 close
And.The light path of this merging is referred to as the 1st merging light path 58a.2nd light path merging portion extracts from green light LG to be possessed
Relative to the 2nd red light LR2 of the wavelength components that the 2nd threshold value T1B is long wavelength, and direct it to the 1st
Merge light path 58a.
1st threshold value T1A and the 2nd threshold value T1B are the light transmission rate of 1DM55a and luminous reflectance nearly forms 50%
Wavelength.1st threshold value T1A is present in the peak wavelength of the 1st red light LR1 and the peak wavelength of green light LG
Between.2nd threshold value T1B is the long wavelength of the peak wavelength relative to the 1st red light LR1, and is preferably in
In the range of 640nm～670nm.
3rd light path 57c and the 4th light path 57d are orthogonal, are configured with 2DM55b at its intersection point.Specifically,
2DM55b is configured to a face and intersects with the 3rd light path 57c with the angle of 45 °, another face with the angle of 45 ° with
4th light path 57d intersects.As shown in Figure 8,2DM55b has threshold value T2 at about 425nm, comparison threshold value
The light of the wavelength that T2 is short reflects, and makes the light transmission of the wavelength longer than threshold value T2.Here, threshold value T2 is
The light transmission rate of 2DM55b and luminous reflectance are almost the wavelength of 50%.
By possessing this optical characteristics, 2DM55b reflects most purple light LV, and makes most blueness
Light LB passes through.Thus, by 2DM55b, the 3rd light path 57c and the 4th light path 57d are merged.Below,
The light path merging the 3rd light path 57c and the 4th light path 57d is referred to as 2-in-1 and light path 58b.
1st merges light path 58a and the 2-in-1 and light path 58b is orthogonal, is configured with 3DM55c at its intersection point.Specifically
Ground, 3DM55c is configured to a face and intersects with the 1st merging light path 58a with the angle of 45 °, another face with
The angle of 45 ° is 2-in-1 with and light path 58b intersects.As it is shown in figure 9,3DM55c has threshold at about 480nm
Value T3, and the light of the short wavelength of comparison threshold value T3 reflects, and makes the light transmission of the wavelength longer than threshold value T3.?
This, threshold value T3 is the wavelength that the light transmission rate of 3DM55c and luminous reflectance are almost 50%.
By possessing this optical characteristics, 3DM55c makes the most green light merging the incidence of light path 58a from the 1st
LG, the 1st red light LR1 and the 2nd red light LR2 pass through, and reflect most from 2-in-1 and light path 58b
Incident purple light LV and blue light LB.Thus, by 3DM55c, light path 58a and the 2nd is merged by the 1st
Merge light path 58b to merge.Below, light path 58a and the 2-in-1 and light path of light path 58b merging are merged by the 1st
It is referred to as the 3rd merging light path 58c.
In the present embodiment, 3DM55c is corresponding to " the 3rd light path merging portion " of the present invention, threshold value T3 pair
Ying Yu " the 3rd threshold value ".Further, 2DM55b is corresponding to " the 4th light path merging portion " of the present invention, threshold value
T2 corresponds to " the 4th threshold value ".
Infrared ray cut off filter 56 is arranged in the 3rd merging light path 58c.As shown in Figure 10, infrared ray cut filter
Ripple device 56 possesses threshold value T4 of about 670nm, makes the light transmission of the wavelength shorter than threshold value T4, and reflectivity threshold value T4
The light of long wavelength, thus intercept the light (infrared ray) of the wavelength longer than threshold value T4.Here, threshold value T4 is infrared ray
The light transmission rate of cut-off filter 56 and luminous reflectance are almost the wavelength of 50%.
Collecting lens 59 is configured near the incidence end of photoconduction 33, to the light having passed through infrared ray cut off filter 56
Carry out assembling and inciding the incidence end of photoconduction 33 as illumination light.This illumination light is from the leading section 12d of endoscope 12
Penetrate and the object of observation is illuminated.
By light source control portion 31, LED drive division 51 is controlled.Light emission ratio configuration part 32 stores
There is the setting of the luminous strength ratio of each LED50a～50d.Light source control portion 31 sets according to being stored in light emission ratio
Determine the setting of the luminous strength ratio in portion 32 and drive LED drive division 51, thus adjust each LED50a～50d
Luminous intensity.
2nd red light LR2 is a part of composition of green light LG from G-LED50b injection, and therefore the 2nd is red
The light quantity of light LR2 depends on the luminous intensity of G-LED50b.The luminous intensity of G-LED50b is set to make the 2nd
It is long wave relative to the 2nd threshold value T1B (about 650nm) that the light quantity of red light LR2 is more than in the 1st red light LR1
The light quantity of long wavelength components.
It is stored on the setting value of the light emission ratio configuration part 32 observation image according to the object of observation having spread Gentian Violet
Color and be set.Specifically, in the case of the object of observation has spread Gentian Violet, light emission ratio configuration part
In 32, storage has following setting: make the pigment being illuminated by the illumination light generated by addition type light source 30 dissipate
The pigment that the color in cloth region is illuminated with the illumination light (broad band light) by being generated by conventional broadband light source
Aberration between the color of dispersion zone is below certain.This aberration is represented by distance, delta E in Lab space,
Such as, the setting of Δ E 6 it is set to.The broad band light generated by conventional broadband light source at least include green
The green light frequency band of coloured light LG and having in including the red light frequency band of the 1st red light LR1 and the 2nd red light LR2
Standby continuous print luminous intensity frequency spectrum.
The illumination light generated by addition type light source 30 has the luminous intensity frequency spectrum shown in (A) of Figure 11.(B) of Figure 11
Represent the dichroic reflection frequency spectrum RS1 and the dichroic reflection frequency spectrum RS2 of indigo carmine of Gentian Violet.Gentian Violet is about
The wavelength band of below 470nm and the wavelength band of about more than 640nm possess certain above reflectance.Indigo
It is anti-that carmine possesses more than certain in the wavelength band of about below 520nm and the wavelength band of about more than 670nm
Penetrate rate.
(C) of Figure 11 is denoted as the broad band light generated by conventional broadband light source, such as, xenon light source gives birth to
The luminous intensity frequency spectrum of the illumination light become.It is luminous that this illumination light possesses about 400nm continuous print to about 670nm
Intensity spectrum.
In conventional addition type light source, the upper limit wavelength of spectrum of wavelengths is about 650nm, therefore from the object of observation
What the dispersion zone of Gentian Violet returned returns the red one-tenth comprised hardly in light relative to about 650nm is long wavelength side
Point, this dispersion zone shows in observing image as close to blue color.In contrast, in present embodiment
Addition type light source 30 in the case of, extract as the 2nd red light LR2 from G-LED50c injection green light
Being added in illumination light relative to the wavelength components that the 2nd threshold value T1B is long wavelength, therefore from observation in LG
Comprising substantial amounts of in the return light that the dispersion zone of the Gentian Violet in object returns is long wavelength side relative to about 650nm
Red color components.Thus, this dispersion zone and the conventional illumination light (with reference to (C) of Figure 11) employing broadband light source
Situation in the same manner, show as bluish violet and observing in image.
On the other hand, indigo carmine possesses the reflectance more than certain in the wavelength band of about more than 670nm,
If thus including the wavelength components of substantial amounts of about more than 670nm in illumination light, then the indigo rouge in the object of observation
The red color of fat presents redness and shows in observing image.In the present embodiment, filtered by infrared ray cut
Device 56 and intercept the wavelength components of about more than 670nm from illumination light, therefore indigo carmine and conventional use wideband
The situation of the illumination light (with reference to (C) of Figure 11) with light source in the same manner, shows in observing image as blueness.
Then, the effect to the endoscopic system 10 of present embodiment illustrates.First, by the use of doctor etc.
The insertion section 12a of endoscope 12 is inserted under the tested interior state of large intestine etc. by family, and carry out in subject is remote
Observe and shoot.Now, the light-emission operation of light supply apparatus 14 is carried out, by the imaging apparatus in endoscope 12
Shooting action that 38 are carried out, the generation action observing image carried out by processor device 16 and to monitor 18
The image display action of image is observed in display.
In light supply apparatus 14, light source control portion 31 drives according to the setting being stored in light emission ratio configuration part 32
Dynamic LED drive division 51, thus control the luminous intensity of each LED50a～50d of addition type light source 30.From respectively
The light (purple light LV, blue light LB, green light LG, the 1st red light LR1) of individual LED50a～50d injection leads to
Cross the 1st～3DM55a～55c and closed ripple.It addition, 1DM55a possesses the optical characteristics shown in Fig. 7,
Thus extract from green light LG and possess the 2nd red light relative to the wavelength components that the 2nd threshold value T1B is long wavelength
LR2 and guide the light path relative to the wavelength components that the 1st threshold value T1A is short wavelength to green light LG.
Closed the light transmission infrared ray cut off filter 56 of ripple according to the 1st～3DM55a～55c, thus constituted
Possesses the illumination light of the luminous intensity frequency spectrum shown in (A) of Figure 11.This illumination light is converged by collecting lens 59,
Thus incide the photoconduction 33 in endoscope 12, and penetrate and illumination observation pair from the leading section 12d of endoscope 12
As.
By the imaging apparatus 38 in endoscope 12, the object of observation illuminated by this illumination light is imaged.Take the photograph
Element 38 generates the RGB image signal of numeral and is input to processor device 16.In processor device 16,
By DSP42, RGB image signal is carried out various signal processing, and is made an uproar by noise reduction portion 43
Sound reduction processes, and is thus input to observe image production part 44.Observe the image production part 44 RGB to being inputted
Picture signal carries out various image procossing and generates observation image.Observe image to show via signal of video signal generating unit 45
It is shown in monitor 18.This observation image shows in the way of taking on a red color.This is because, the blood red egg in the object of observation
Absorb short wavelength light in vain.
User detects brown areas or (the pathological changes probability portion, position of the probability with pathological changes such as rubescent when shooting
Position) time, operate zoom operation portion 13, amplify display and include that the object of observation at its pathological changes probability position is amplified
Observe.Further, user is in order to by pathological changes probability position sharpening, carry out pigment distribution to the object of observation.Specifically,
User is in the observation image amplifying display, and on the basis of the front end 22a confirming diffusion tube 22, operation is filled with
The syringe 24 of the pigment agent such as Gentian Violet, indigo carmine, thus pigment is spread to the object of observation.
Light-emission operation, shooting action, the generation action observing image and image display action in this amplifying observation are with remote
Action when distance is observed is identical.Include by the observation figure in the pathological changes portion of the pigment dyeing spread in monitor 18 display
Picture.As it has been described above, in the present embodiment, illumination light possesses the wavelength components of about 650nm～670nm, therefore sees
Examine the Gentian Violet in object and indigo carmine respectively with the situation with the conventional illumination light employing broadband light source
Identical color is shown in observation image.
So, the color of the pigment dispersion zone observed by the endoscopic system 10 of present embodiment is with conventional
Between the color of the pigment dispersion zone observed by having the endoscopic system of broadband light source, difference (aberration) is little,
Even if get used to be carried out, by the conventional endoscopic system with broadband light source, the user that observes, do not feel as yet
The change of color.
Further, the light quantity of the 2nd red light LR2 be from G-LED50c injection green light LG light summation several
About individual percentage ratio, fewer than the light quantity of the 1st red light LR1, therefore it is preferably, by reducing R-LED50a's
Luminous intensity, reduces the light quantity of the 1st red light LR1, is being at least length relative to the 2nd threshold value T1B (about 650nm)
In the wavelength components of wavelength, make the light quantity light quantity more than the 1st red light LR1 of the 2nd red light LR2.Further,
Result is preferably, and the light quantity of the 1st red light LR1 is less with the difference of the light quantity of the 2nd red light LR2.In these feelings
Under condition, the light quantity of the 1st red light LR1 declines, thus causes the 1st red light LR1 and the 2nd red light LR2
The total red light quantity of mixing declines, and therefore preferably by DSP42, red image signal is carried out gain calibration.
" the gain calibration portion " of the DSP42 correspondence present invention.
As shown in (A) of Figure 12, this aberration causes the luminous intensity of R-LED50a to decline, and also causes the 1st red
The light quantity of coloured light LR1 declines.But, if the light quantity excessive descent of the 1st red light LR1, then cause red figure
The S/N of image signal declines, therefore preferably so that the mode that aberration becomes setting α (such as, Δ E=6) sets
The luminous intensity of R-LED50a.The setting of this luminous intensity is referred to as β.This setting β Yu G-LED50b,
The setting of the luminous intensity of B-LED50c and V-LED50d is stored in light emission ratio configuration part 32 together.
As shown in (B) of Figure 12, set the amount of gain to red image signal according to setting β.Will be with this setting
Amount of gain corresponding for β is as γ.The luminous intensity of R-LED50a is the lowest, and this amount of gain γ is the biggest.DSP42 makes
The increasing of red image signal is carried out by amount of gain γ corresponding with setting β being stored in light emission ratio configuration part 32
Benefit correction.
Alternatively, it is also possible to replaced the luminescence reducing R-LED50a by the method for the luminous intensity increasing G-LED50b
The situation of intensity, thus reduce the difference of the light quantity of the 1st red light LR1 and the light quantity of the 2nd red light LR2.That is,
Light emission ratio configuration part 32 sets the ratio of the luminous intensity of R-LED50a Yu G-LED50b, thus sets the 1st
Red light LR1 and the light amount ratio of the 2nd red light LR2.
It addition, in the above-described first embodiment, make as the 1st～the optical characteristics of 3DM55a～55c
By the optical characteristics shown in Fig. 7～Fig. 9, but be not limited to this, it is possible to so that each optical characteristics through and reflection
Relation is contrary.Such as, in the above-described first embodiment, 1DM55a has the 1st threshold value T1A and
The light of the wavelength band between 2 threshold values T1B carries out the band limiting characteristic reflected but it also may possesses and makes the 1st threshold value
The band limiting characteristic of the light transmission of the wavelength band between T1A and the 2nd threshold value T1B.
Further, in the above-described first embodiment, the 1st～3DM55a～55c it is configured with as illustrated in fig. 4,
But can also configure according to the order shown in Figure 13.In this case, 1DM55a will be by
3DM55c and to close the purple light LV of ripple, blue light LB and green light LG red with the 1st penetrated from 1DM55a
Coloured light LR1 closes ripple, and extracts the wavelength one-tenth possessed relative to the 2nd threshold value T1B is long wavelength from green light LG
Point the 2nd red light LR2 and carry out close ripple.
[the 2nd embodiment]
Further, in above-mentioned 1st embodiment, 1DM55a is made to possess the 1st threshold value T1A and the 2nd threshold value
Wavelength band between T1B carries out the band limiting characteristic reflected, thus extracts the 2nd red light LR2 but it also may
Replace 1DM55a that the dichroic mirror with the 1st threshold value T1A and the dichroic mirror with the 2nd threshold value T1B are set,
Thus extract the 2nd red light LR2.
In fig. 14, in the addition type light source 70 of the 2nd embodiment, replace the addition type light of the 1st embodiment
Source 30 that is the 1st～3DM55a～55c and be provided with the 1st～4DM71a～71d, and be provided with the 1st mirror
72a and the 2nd mirror 72b and shield 73.For the structure identical with the 1st embodiment, give identical symbol.
1DM71a is configured to a face and intersects with the 1st light path 57a with the angle of 45 °, and another face is with 45 °
Angle intersect with the 2nd light path 57b.As shown in figure 15,1DM55a has the 1st threshold value at about 590nm
T1A, makes the light of the wavelength shorter than the 1st threshold value T1A, and the light of the wavelength of reflectivity the 1st threshold value T1A length.Cause
This, by 1DM71a by green light LG relative to the wavelength components that the 1st threshold value T1A is short wavelength
Light path merges with the light path relative to the wavelength components that the 1st threshold value T1A is long wavelength of the 1st red light LR1.Will
The light path of this merging is referred to as the 1st merging light path 74a.
It addition, green light LG (include the 2nd red light relative to the wavelength components that the 1st threshold value T1A is long wavelength
LR2) reflected by 1DM71a, and propagate difference light path 74b orthogonal with the 1st merging light path 74a.In this difference
The 1st mirror 72a and the 2nd mirror 72b it is configured with in light path 74b.Difference light path 74b passes through the 1st mirror 72a and the 2nd mirror
72b and be bent over, thus be directed to 2DM71b.
1st merging light path 74a is orthogonal with difference light path 74b, is configured with 2DM71b on its intersection point.Specifically,
2DM71b is configured to a face and intersects with the 1st merging light path 74a with the angle of 45 °, and another face is with 45 °
Angle intersect with difference light path 74b.As shown in figure 16,2DM71b has the 2nd threshold value at about 650nm
T1B, makes the light transmission of the wavelength shorter than the 2nd threshold value T1B, and the light of the wavelength of reflectivity the 2nd threshold value T1B length.
Therefore, extracted the 2nd red light LR2 by 2DM71b and guide to the 1st merging light path 74a.
So, in the present embodiment, 1DM71a corresponds to " the 1st light path merging portion ", 2DM71b
Corresponding to " the 2nd light path merging portion ".
3DM71c is identical for the 2DM55b structure with the 1st embodiment, by the 3rd light path 57c and the 4th
Light path 57d merges.The light path of this merging is referred to as 2-in-1 and light path 64c.1st merges light path 74a and the 2-in-1
And light path 74c is orthogonal, its intersection point is configured with 4DM71d.4DM71d is with the 1st embodiment
The structure that 3DM55c is identical, merges light path 74a and 2-in-1 and light path 74c merging by the 1st.By this this merging
Light path is referred to as the 3rd merging light path 74d.
In the present embodiment, 4DM71d is corresponding to " the 3rd light path merging portion " of the present invention, 3DM71c
" the 4th light path merging portion " corresponding to the present invention.
Identically with the 1st embodiment, merge light path 74d the 3rd be configured with infrared ray cut off filter 56 and gather
Optical lens 59, and through infrared ray cut off filter 56, the light being converged by collecting lens 59 is as illumination
Light and incide photoconduction 33.Luminous intensity frequency spectrum and the 1st embodiment of this illumination light are identical, such as, possess such as figure
The luminous intensity frequency spectrum shown in (A) of 11.
Further, shield 73 is formed in difference light path 74b in the way of can be inserted into/departing from, and is being inserted in difference light
Move between on position and the disengaging configuration departed from from difference light path 74b on the 74b of road.By light source control portion
31 movements controlling shield 73.Using shield 73 as in the case of on position, the 2nd red light LR2
Shielded plate 73 covers, and will not guide to the 1st merging light path 74a.So, in the addition type of the 2nd embodiment
In light source 70, by controlling the insertion/disengaging of shield 73, thus it is red to select whether add the 2nd in illumination light
Coloured light LR2.
Alternatively, it is also possible to be configured to as follows: replace shield 73 can will control to electrical resistance the liquid crystal of light transmission rate
The shutter devices such as shutter are fixedly arranged in difference light path 74b, and control the light transmission rate of this shutter device.
Further, in the 1st and the 2nd above-mentioned embodiment, at addition type light source 30, it is provided with as purple in 70
The V-LED50d of color light source, but this purple light source not necessarily light source.Accordingly it is also possible to be not provided with purple light source,
But addition type light source it is made up of blue-light source, green light source and red light source.And then, it is also possible to it is not provided with blueness
Light source, using the blue exciting light LE that penetrates from the excitation source being included in G-LED50c as the blueness of illumination light
Composition and use.Thus, it is also possible to be made up of addition type light source green light source and red light source.
Further, in the 1st and the 2nd above-mentioned embodiment, it is provided with infrared ray cut off filter 56, but by phase
Add illumination light that type light source (30,70) generates compared with the illumination light generated by conventional broadband light source, relative to
Threshold value T4 of about 670nm is that the wavelength components of long wavelength side is few, and therefore infrared ray cut off filter 56 is not must
The parts of palpus, can be as desired to be configured.
Further, in the 1st and the 2nd above-mentioned embodiment, primary colors type is employed as imaging apparatus 38 colored
Sensor but it also may replaced this primary colors type color sensor by complementary color type color sensor.Color as this complementary color type
Colour sensor, preferably possesses cyan (C) pixel, magenta (Mg) pixel, yellow (Y) pixel and green (G) pixel
Sensor.So, in the case of imaging apparatus 38 is complementary color type color sensor, at processor device 16
In, complementary color picture signal (CMYG picture signal) is transformed into primary image signal (RGB image signal) and transports
Calculate.
Further, in the 1st and the 2nd above-mentioned embodiment, employ CMOS-type take the photograph as imaging apparatus 38
As sensor but it also may replaced this CMOS-type by CCD (Charge-Coupled Device) type image sensor
Image sensor.
Further, in the 1st and the 2nd above-mentioned embodiment, as the comparison other of the addition type light source of the present invention
Conventional broadband light source, employs a kind of xenon light source as high brightness charging source, but as long as be possess to
Include that the continuous print of the wavelength band of green light LG and the 1st red light LR1 and the 2nd red light LR2 is luminous strong less
The light source of degree frequency spectrum, it is possible to use broadband light source in addition.For example, it is also possible to use in JP
Broadband light source described in 2014-121630 publication.This broadband light source possess send centre wavelength be about
The LASER Light Source of the blue laser of 445nm sends the fluorophor of the fluorescence of white with receiving this blue laser.
In the 1st and the 2nd above-mentioned embodiment, light supply apparatus and processor device are carried out split setting, but
Light supply apparatus and processor device can also be configured to a device.
The present invention is without departing from carrying out various deformation and change in the range of spirit, and these situations also should include
Within the scope of the present invention.
Claims (13)
1. a light source device for endoscope, comprising:
Red light source, it sends the 1st red light；
Green light source, it sends green light, and the wavelength band of this green light is to the peak value relative to above-mentioned 1st red light
The long wavelength side extension of wavelength；
1st light path merging portion, it is between peak wavelength and the peak wavelength of above-mentioned green light of above-mentioned 1st red light
Possesses the 1st threshold value, by the light path relative to the wavelength components that above-mentioned 1st threshold value is short wavelength of above-mentioned green light with upper
The light path relative to the wavelength components that above-mentioned 1st threshold value is long wavelength stating the 1st red light merges；And
2nd light path merging portion, it extracts the 2nd red light from above-mentioned green light and guides to by above-mentioned 1st light path
Merging portion merge after light path, the 2nd red light is to be the wavelength components of long wavelength relative to the 2nd threshold value, the 2nd
Threshold value is at the long wavelength side of the peak wavelength relative to above-mentioned 1st red light.
Light source device for endoscope the most according to claim 1, wherein,
Above-mentioned 1st light path merging portion and above-mentioned 2nd light path merging portion are made up of a dichroic mirror, and this dichroic mirror possesses to be made
The luminous reflectance of the wavelength band between above-mentioned 1st threshold value and above-mentioned 2nd threshold value or the band limiting characteristic passed through.
Light source device for endoscope the most according to claim 2, wherein,
Incident above-mentioned 1st red light, the most incident above-mentioned green light on a face of above-mentioned dichroic mirror.
4. according to the light source device for endoscope described in any one in claims 1 to 3, wherein,
Above-mentioned 2nd threshold value is in the range of 640nm～670nm.
5. according to the light source device for endoscope described in any one in claims 1 to 3, wherein,
It is long wavelength's relative to above-mentioned 2nd threshold value that the light quantity of above-mentioned 2nd red light is more than in above-mentioned 1st red light
The light quantity of wavelength components.
Light source device for endoscope the most according to claim 5, wherein,
Above-mentioned red light source is made up of light emitting diode,
Above-mentioned green light source is made up of excitation source and fluorophor, and this excitation source produces exciting light, and this fluorophor receives
Above-mentioned exciting light and luminous.
Light source device for endoscope the most according to claim 6, wherein,
Above-mentioned green light possesses the wavelength components of 500nm～690nm.
Light source device for endoscope the most according to claim 1, it includes,
Blue-light source, it sends blue light；And
3rd light path merging portion, it possesses between the peak wavelength and the peak wavelength of above-mentioned green light of above-mentioned blue light
3rd threshold value, and by the light path relative to the wavelength components that above-mentioned 3rd threshold value is short wavelength of above-mentioned blue light with above-mentioned
The light path relative to the wavelength components that above-mentioned 3rd threshold value is long wavelength of green light merges.
Light source device for endoscope the most according to claim 8, it includes,
Purple light source, it sends purple light；And
4th light path merging portion, it possesses between the peak wavelength and the peak wavelength of above-mentioned blue light of above-mentioned purple light
4th threshold value, and by the light path relative to the wavelength components that above-mentioned 4th threshold value is short wavelength of above-mentioned purple light with above-mentioned
The light path relative to the wavelength components that above-mentioned 4th threshold value is long wavelength of blue light merges.
10. an endoscopic system, comprising:
Light source device for endoscope described in claim 1；
Imaging apparatus, its object of observation is imaged and export colour picture signal, this object of observation be by by
The illumination light that above-mentioned light source device for endoscope sends is illuminated；
Observing image production part, it carries out image procossing to above-mentioned picture signal and generates observation image；And
Light emission ratio configuration part, it sets the ratio of the luminous intensity between above-mentioned red light source and above-mentioned green light source.
11. endoscopic systems according to claim 10, wherein,
Above-mentioned light emission ratio configuration part set above-mentioned luminous intensity ratio so that the following two kinds color of the object of observation it
Between aberration be below certain: wherein, a kind of color is to include the green light frequency band of above-mentioned green light and to include
The broad band light possessing continuous print frequency spectrum in the red light frequency band of above-mentioned 1st red light and above-mentioned 2nd red light is shone
Bright and obtain, another kind of color is to be illuminated by the above-mentioned illumination light from above-mentioned light source device for endoscope and obtain
Arrive.
12. endoscopic systems according to claim 11, wherein,
Above-mentioned aberration represents the distance in Lab space,
Above-mentioned light emission ratio configuration part sets the ratio of the above-mentioned luminous intensity making above-mentioned distance as less than 6.
13. according to the endoscopic system described in claim 11 or 12, and it includes pigment distribution portion, and this pigment spreads
Portion spreads Gentian Violet to the above-mentioned object of observation.
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| CN201911291383.1A CN110974134B (en) | 2015-04-28 | 2016-04-27 | Light source device for endoscope |
| CN201911291483.4A CN110974135B (en) | 2015-04-28 | 2016-04-27 | Light source device for endoscope |
| CN201911291354.5A CN110974133B (en) | 2015-04-28 | 2016-04-27 | Endoscope system |
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| CN201911291383.1A Division CN110974134B (en) | 2015-04-28 | 2016-04-27 | Light source device for endoscope |
| CN201911291483.4A Division CN110974135B (en) | 2015-04-28 | 2016-04-27 | Light source device for endoscope |
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| CN201610269213.3A Active CN106073691B (en) | 2015-04-28 | 2016-04-27 | Light source device for endoscope and endoscope system |
| CN201911291483.4A Active CN110974135B (en) | 2015-04-28 | 2016-04-27 | Light source device for endoscope |
| CN201911291383.1A Active CN110974134B (en) | 2015-04-28 | 2016-04-27 | Light source device for endoscope |
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| CN110381804A (en) * | 2017-03-10 | 2019-10-25 | 索尼奥林巴斯医疗解决方案公司 | Endoscopic apparatus |
| CN110662477A (en) * | 2017-05-25 | 2020-01-07 | 日本电气株式会社 | Information processing apparatus, control method, and program |
| CN113164007A (en) * | 2018-12-10 | 2021-07-23 | 奥林巴斯株式会社 | Image recording apparatus |
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| CN110381804A (en) * | 2017-03-10 | 2019-10-25 | 索尼奥林巴斯医疗解决方案公司 | Endoscopic apparatus |
| CN106963328A (en) * | 2017-04-26 | 2017-07-21 | 上海成运医疗器械股份有限公司 | The LASER Light Source and means of illumination of illumination are dyed for Medical endoscope spectrum |
| CN110662477A (en) * | 2017-05-25 | 2020-01-07 | 日本电气株式会社 | Information processing apparatus, control method, and program |
| CN113164007A (en) * | 2018-12-10 | 2021-07-23 | 奥林巴斯株式会社 | Image recording apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016202774A (en) | 2016-12-08 |
| CN110974134B (en) | 2022-03-29 |
| CN110974134A (en) | 2020-04-10 |
| CN110974133B (en) | 2022-07-12 |
| CN110974133A (en) | 2020-04-10 |
| CN106073691B (en) | 2020-06-19 |
| CN110974135B (en) | 2022-04-05 |
| JP6422816B2 (en) | 2018-11-14 |
| CN110974135A (en) | 2020-04-10 |
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