CN205942116U - Turn beam split unit and endoscope optical imaging system - Google Patents
Turn beam split unit and endoscope optical imaging system Download PDFInfo
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- CN205942116U CN205942116U CN201620841352.4U CN201620841352U CN205942116U CN 205942116 U CN205942116 U CN 205942116U CN 201620841352 U CN201620841352 U CN 201620841352U CN 205942116 U CN205942116 U CN 205942116U
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Abstract
The utility model discloses a light is closed again in the first beam split of light that turn beam split unit and endoscope optical imaging system, the beam split unit of should transferring are used for making two kinds of different wavelength, makes the optical distance of the light of two kinds of different wavelength different to make the formation of image position of focal plane of the light of two kinds of different wavelength unanimous, this imaging system includes: light signal emission unit, light signal acquisition element and camera unit, the light signal emission unit is to waiting to detect tissue transmission visible light and near -infrared exciting light, and light signal acquisition element gathers through waiting to detect the visible light of tissue reflection and the near infrared fluorescence who is inspired, and camera unit receives two kinds of light that light signal acquisition element gathered to make two kinds of light carry out the branch actinic light, make the formation of image position of focal plane of two kinds of light unanimous. The utility model discloses a turn beam split unit and endoscope optical imaging system, simple structure, small, cost of manufacture are low, can export colour and fluoroscopic image simultaneously, it is low to the operation requirement of software.
Description
Technical field
This utility model is related to less invasive techniques field, particularly to a kind of turnover spectrophotometric unit and endoscopic optical imaging system
System.
Background technology
In recent years, it is used for ocular angiogenesis especially choroidal artery near infrared fluorescent contrast agent ICG (indocyanine green)
Research, the diagnosis of malignant tumor, the determination of borderline tumor and tumor sentinel lymph node detection etc., in minimally invasive diagnosis and perform the operation
Field is rapidly developed, and meanwhile, also proposes new requirement to matching used medical endoscope.Existing medical endoscope one
As use visible light (400nm-700nm), in this spectral region, what endoscopic system can meet blur-free imaging will
Ask.But near-infrared fluorescent radiography uses near-infrared fluorescent spectrum (820nm-850nm) to be imaged, to make two kinds of spectrum lead to
Remain to blur-free imaging after crossing endoscopic system, need to solve the problems, such as the chromatism of position that two kinds of spectrum introduce, you can see light with closely red
Outer fluorescence imaging position of focal plane is inconsistent, typically has the deviation of 0.3mm-0.5mm.So, or by complicated optical system
Color difference eliminating, or needing doctor in diagnosis or operation process, two kinds of spectrum to be focused repeatedly, could obtain visible ray
Picture rich in detail with near-infrared fluorescent.But the former high cost, structure and size are not easy to miniaturization；The latter repeatedly focuses and have impact on
Operation, reduces efficiency.
For not confocal, the Publication No. that solves the problems, such as visible light and near-infrared fluorescent light spectrum image-forming：US
The United States Patent (USP) of 8773756 B2 discloses one kind and is used for correcting visible ray and near-infrared fluorescent light spectrum image-forming in endoscope apparatus
The optical coupler of out of focus.This optical coupler is made up of remote Jiao's prism assemblies and imaging optical system, wherein, far burnt prism group
Part is made up of the prism of different refractivity, is coated with spectro-film so that visible ray is separated with near-infrared fluorescent between prism.By dividing
Not Jiao Zheng visible ray and near-infrared fluorescent light path, reach both and be imaged confocal purpose.However, the prism that this mode uses
Number is many, and volume is big, and assembly precision is had high demands.
Publication No.：The Chinese patent of CN 104905759 A discloses a kind of core optical system of endoscope.This is
System is by optimizing object lens, the field lens between image rotation assembly, and object lens and image rotation assembly so that the out of focus of system is minimum with the curvature of field
Change, solve the problems, such as visible ray and near-infrared fluorescence imaging out of focus.However, the eyeglass number of this kind of method use is more, material
Material is complicated, and is difficult to optimize.
Publication No.：The United States Patent (USP) of US 6293911 B1 and US 9173554 B2 all discloses a kind of visible ray and near
Infrared fluorescence imaging system, using colour splitting prism and (or) dichroic mirror, described imaging system will be seen that light and near-infrared are glimmering
Light is divided into red, green, blue, four wave bands of fluorescence are processed respectively, is then each imaged on red, green, blue, four imageing sensors of fluorescence
On, by the method for software processes, export again after synthesis colour and fluoroscopic image.Although the method avoids visible ray and closely red
Not confocal problem when outer fluorescence is imaged simultaneously, and improve the resolution of image, but four imageing sensor high costs, need
Export again after colour to be synthesized and fluoroscopic image, the computing to software has high demands, and huge structure, complexity.
Utility model content
This utility model is directed to above-mentioned problems of the prior art, proposes a kind of turnover spectrophotometric unit and endoscope's light
Learn imaging system, visible ray (400nm～700nm) and near-infrared fluorescent (820nm～850nm) are made using turnover spectrophotometric unit
Imaging focal plane position consistency, is obtained in that the picture rich in detail of visible ray and near-infrared fluorescent, turnover spectrophotometric unit is simply easy to do, and is
System structure is simple, small volume, low manufacture cost；And colour and fluoroscopic image can be exported simultaneously, without first synthesizing visible light with
Export again after near-infrared fluorescent image, the computing requirement to software is low.
For solving above-mentioned technical problem, this utility model is achieved by the following technical solution：
This utility model provides a kind of turnover spectrophotometric unit, and it is used for incident first wave length light and second wave length light are entered
Row light splitting closing light again, makes first wave length light different with the light path of second wave length light, and then makes first wave length light and second wave length light
Imaging focal plane position consistency；
First wave length light is different with the wavelength of second wave length light.
It is preferred that turnover spectrophotometric unit includes：Isosceles right-angle prism and plate glass, wherein,
Described plate glass is be arranged in parallel with the inclined-plane of described isosceles right-angle prism；
Described first wave length light and described second wave length light are transmitted into institute from a right-angle surface of described isosceles right-angle prism
State isosceles right-angle prism, then the inclined-plane light splitting through described isosceles right-angle prism, be divided into described first wave length light and described second
Wavelength light；The slant reflection through described isosceles right-angle prism for the described first wave length light；Described second wave length light is straight through described isosceles
The inclined-plane of angle prism transmits described isosceles right-angle prism, enters from the face of the close described isosceles right-angle prism of described plate glass
Penetrate, the another side reflection through described plate glass, sequentially pass through the face of the close described isosceles right-angle prism of described plate glass
And the inclined-plane of described isosceles right-angle prism is transmitted into described isosceles right-angle prism；Finally described first wave length and described second
Wavelength transmits described isosceles right-angle prism from another right-angle surface of described isosceles right-angle prism.
It is preferred that two right-angle surface of described isosceles right-angle prism are coated with anti-reflection film, it is used for making described first wave length light and institute
State second wave length light transmission；
The inclined-plane of described isosceles right-angle prism is coated with dichroic film, is used for making described first wave length light reflection, makes described the
Two wavelength light transmissions；
The one side of the close described isosceles right-angle prism of described plate glass is coated with anti-reflection film, is used for making described second wave length
Light transmission, the another side of described plate glass is coated with reflectance coating or semi-transparent semi-reflecting film, is used for making described second wave length light reflection.
It is preferred that described isosceles right-angle prism and described plate glass are glued together by optical cement.
This utility model also provides a kind of endoscopic optical imaging system, and it includes：Optical signal launch unit, optical signal are adopted
Collection unit and image unit；Wherein,
Described optical signal launch unit is used for certain the field emission visible ray and near-infrared excitation light to tissue to be detected,
So that described tissue to be detected is subject to described near-infrared it will be seen that light reflects and make the near-infrared fluorescent of described tissue to be detected to roll into a ball
Excitation launches near-infrared fluorescent；
Described light signal collection unit be used for the visible ray through described Tissue reflectance to be detected for the collection and launch near
Infrared fluorescence；
Described image unit includes：Optical signal processing unit and imageing sensor；
Described optical signal processing unit is used for receiving the visible ray of described light signal collection unit collection and near-infrared is glimmering
Light, and it is processed, so that described visible ray is consistent with the imaging focal plane of described near-infrared fluorescent；Described optical signal prosessing
Unit includes：Turnover spectrophotometric unit, described turnover spectrophotometric unit is turnover spectrophotometric unit described above；
Described image sensor is used for receiving visible ray and near-infrared after described optical signal processing unit is processed
Fluorescence.
It is preferred that described visible ray, described near-infrared excitation light and described near-infrared fluorescent are from described isosceles right-angled edge
One right-angle surface of mirror is transmitted into described isosceles right-angle prism, then the inclined-plane light splitting through described isosceles right-angle prism；Described can
See the slant reflection through described isosceles right-angle prism for the light；Described near-infrared excitation light and described near-infrared fluorescent are through described isosceles
The inclined-plane of corner cube prism transmits described isosceles right-angle prism, from the face of the close described isosceles right-angle prism of described plate glass
Incidence, the another side through described plate glass for the described near-infrared fluorescent reflects, and described near-infrared excitation light is through described plate glass
Another side transmission, described near-infrared fluorescent sequentially pass through described plate glass the face of close described isosceles right-angle prism and
The inclined-plane of described isosceles right-angle prism is transmitted into described isosceles right-angle prism；Finally described visible ray and described near-infrared fluorescent
Transmit described isosceles right-angle prism from another right-angle surface of described isosceles right-angle prism；Further,
The one side away from described isosceles right-angle prism of described plate glass is semi-transparent semi-reflecting film, is used for making described near-infrared
Fluorescent reflection, makes described near-infrared excitation light transmission.
It is preferred that described optical signal processing unit also includes：Optical coupler, described visible ray and near-infrared fluorescent are first
Through described optical coupler, then through described turnover spectrophotometric unit；
Described optical coupler includes one or more lens, described optical coupler be used for eliminating described visible ray and
The aberration of described near-infrared fluorescent.
It is preferred that endoscopic optical imaging system also includes：Optical signal conversion unit, described optical signal conversion unit is used for
The described visible ray that receive described image sensor and described near-infrared fluorescent are converted to the corresponding signal of telecommunication, and process
Become video data.
It is preferred that endoscopic optical imaging system also includes：Graphics processing unit, described image processing unit is used for receiving
And process the described video data that described optical signal conversion unit obtains；Further,
Also include：Image-display units, described image display unit is used for receiving described image processing unit processes and obtains
Video data, obtain visible images or the fluoroscopic image with color background, and show in real time, when described video data is
During the video data of visible ray, obtain for visible images, when the video data that described video data is near-infrared fluorescent,
The fluoroscopic image for having color background obtaining.
It is preferred that endoscopic optical imaging system also includes：Optical signal control unit, described optical signal control unit is used for
Control described optical signal launch unit transmitting visible ray and near-infrared excitation light；
Described optical signal control unit is additionally operable to control described image processing unit to receive and process the video counts of visible ray
According to or near-infrared fluorescent video data, when the video data for visible ray that described image processing unit receives, not to institute
State video data to process, when the video data for near-infrared fluorescent that described image processing unit receives, to described video
Data is done lateral shift and is processed the location overlap so as to the video data of visible ray, and mark fluorescent region, for non-fluorescence
Region is done color background and is processed.
Compared to prior art, this utility model has advantages below：
(1) this utility model provides turnover spectrophotometric unit and endoscopic optical imaging system, using turnover spectrophotometric unit
Light splitting closing light again is carried out to visible ray and near-infrared fluorescent, changes the light path of two kinds of wavelength light, and then make the imaging of two kinds of light
Position of focal plane is consistent, obtains the picture rich in detail of visible ray and near-infrared fluorescent；And simple, the required rib of spectrophotometric unit structure of transferring
Mirror quantity is few, and assembling is simple, convenient, low manufacture cost；
(2) this utility model can export colour and fluoroscopic image simultaneously, does not need first synthesizing visible light and near-infrared
Export again after the image of fluorescence, the computing requirement to software is low；
(3) this utility model is corrected to the out of focus of visible ray and near-infrared fluorescent to by spectrophotometric unit of transferring,
The image of visible ray and near-infrared fluorescent can directly be exported, doctor need not be focused repeatedly to two kinds of spectrum, can directly observe,
Do not change the existing operating habit of doctor, simple to operate；
(4) as long as this utility model selects the plate glass of respective thickness according to the defocusing amount of different optical systems,
It is applicable to visible ray and the near-infrared fluorescent optical system of different defocusing amounts.
Certainly, implement arbitrary product of the present utility model to it is not absolutely required to reach all the above advantage simultaneously.
Brief description
Below in conjunction with the accompanying drawings embodiment of the present utility model is described further：
Fig. 1 is the structural representation of the turnover spectrophotometric unit of embodiment 1 of the present utility model；
Fig. 2 is the structural representation of the endoscopic optical imaging system of embodiment 2 of the present utility model；
Fig. 3 is the structural representation of the endoscopic optical imaging system of embodiment 3 of the present utility model；
Fig. 4 is the schematic diagram of the image unit of endoscopic optical imaging system of embodiment 4 of the present utility model；
Fig. 5 a is that the near-infrared fluorescent that receives of imageing sensor of embodiment 4 of the present utility model is anti-through plate glass
Penetrate and the schematic diagram without plate glass reflection；
Fig. 5 b is that the near-infrared fluorescent that receives of imageing sensor of embodiment 4 of the present utility model is anti-through plate glass
Penetrate and the schematic diagram after lateral shift；
Fig. 6 is the schematic diagram of the image unit of endoscopic optical imaging system of embodiment 5 of the present utility model；
Fig. 7 is the structural representation of the endoscopic optical imaging system of embodiment 6 of the present utility model；
Fig. 8 is the structural representation of the endoscopic optical imaging system of embodiment 7 of the present utility model.
Label declaration：1- isosceles right-angle prism, 2- plate glass, 3- first wave length light, 4- second wave length light；
11- mono- right-angle surface, another right-angle surface of 12-, 13- inclined-plane；
21- front surface, surface after 22-；
Certain region of 100- tissue to be detected, 101- optical signal launch unit, 102- light signal collection unit, 103- images
Unit, 104- optical signal conversion unit, 105- optical signal control unit, 106- graphics processing unit, 107- image-display units；
1011- VISIBLE LIGHT EMISSION unit, 1012- near-infrared excitation light transmitter unit；
1021- object lens, 1022- transfer unit, 1023- eyepiece；
1031- turnover spectrophotometric unit, 1032- imageing sensor, 1033- optical coupler；
Specific embodiment
Below embodiment of the present utility model is elaborated, the present embodiment is being front with technical solutions of the utility model
Put and implemented, give detailed embodiment and specific operating process, but protection domain of the present utility model does not limit
In following embodiments.
Embodiment 1：Turnover spectrophotometric unit
In conjunction with Fig. 1, the present embodiment is described in detail to turnover spectrophotometric unit of the present utility model, and it is used for incident
The light of two kinds of different wave lengths：First wave length light and second wave length light carry out light splitting closing light again, make first wave length light and second wave length
The light path of light is different, and then makes the imaging focal plane position consistency of first wave length light and second wave length light.Specifically, its structural representation
Figure is as shown in figure 1, it includes：Isosceles right-angle prism 1 and plate glass 2, the front surface of plate glass 2 and isosceles right-angle prism
1 inclined-plane is glued together, in different embodiments, also can be fixed by other means.First wave length light 3 and second wave length
A right-angle surface 11 through isosceles right-angle prism 1 for the light 4 is transmitted in isosceles right-angle prism 1, is made simultaneously incident to isosceles right-angle prism 1
Inclined-plane 13 on, first wave length light 3 incides the front surface of plate glass through slant reflection, second wave length light 4 through inclined-plane transmission
21 (i.e. near the one side of isosceles right-angle prism), then transmission enters in plate glass 2, then surface 22 is anti-after plate glass
Penetrate, sequentially pass through inclined-plane 13 transmission of plate glass 2 and isosceles right-angle prism 1, be again introduced in isosceles right-angle prism 1,
Afterwards, first wave length light 3 and second wave length light 4 all transmit from another right-angle surface 12 of isosceles right-angle prism 1.Plate glass 2
Thickness is selected according to the defocusing amount of second wave length light 4 first wave length light 3 image space relatively, through turnover spectrophotometric unit it
Afterwards, the imaging focal plane position consistency of first wave length light 3 and second wave length light 4, can all blur-free imaging at grade, but
Can there is certain transverse positional displacement d, as shown in Figure 1 between two kinds.
In preferred embodiment, two right-angle surface 11 and 12 of isosceles right-angle prism 1 are all plated and are set anti-reflection film so that first wave length light
Enter or transmit isosceles right-angle prism 1 with second wave length light transmission, inclined-plane 13 plating of isosceles right-angle prism 1 is provided with dichroic film,
Enable to first wave length light and second wave length light be divided into two-beam when inclined-plane 13, first wave length light reflects through inclined-plane 13,
Second wave length light is through inclined-plane 13 transmission；Front surface 21 plating of plate glass 2 is provided with anti-reflection film so that second wave length light after transmission
Front surface 21 transmission through plate glass 2 enters in plate glass 2, and rear surface 22 plating of plate glass 2 is provided with reflectance coating, can make
Second wave length light reflects on the rear surface 22 of plate glass 2, then sequentially passes through front surface and the isosceles right-angled edge of plate glass 2
Inclined-plane 13 transmission of mirror 1；Finally, first wave length light and second wave length light are all through another right-angle surface 12 of isosceles right-angle prism 1
Transmit isosceles right-angle prism 1.
In preferred embodiment, what the plating of the rear surface 22 of plate glass 2 set can be semi-transparent semi-reflecting film, when initially incidence not
Only include：First wave length light and two kinds of light of second wave length light, can also include the light of its commplementary wave length, and semi-transparent semi-reflecting film can make
Two wavelength light reflections, and make the light transmission of its commplementary wave length.
Embodiment 2：Endoscopic optical imaging system
In conjunction with Fig. 2, the present embodiment is described in detail to endoscope optical system of the present utility model, its structural representation
As shown in Fig. 2 it includes：Optical signal launch unit 101, light signal collection unit 102 and image unit 103.Wherein, light letter
Number transmitter unit 101 is used for certain region 100 transmitting visible ray (400nm～700nm) to tissue to be detected and near-infrared swashs
Luminous (as 808nm near-infrared laser), certain region 100 of tissue to be detected is it will be seen that light reflects, and is swashed by near-infrared excitation light
Launch near-infrared fluorescent (820nm～850nm) it is seen that light, near-infrared fluorescent and near-infrared excitation light all enter light letter
In number collecting unit 102, light signal collection unit 102 is processed to three kinds of light, such as：Eliminate aberration, change optical path direction extremely
Required direction, image unit 103 is used for receiving the light processing through optical signal processing unit 102, and image unit 103 includes：
Turnover spectrophotometric unit 1031 and imageing sensor 1032, turnover spectrophotometric unit 1031 is used for visible ray and near-infrared fluorescent
Carry out closing light after first light splitting, make the light path of two kinds of light different, make near-infrared fluorescent walk a part of light path than visible ray more, and then make
The imaging focal plane position consistency of two kinds of light；Imageing sensor 1032 is used for receiving the visible ray from turnover spectrophotometric unit 1031 outgoing
And near-infrared fluorescent.
Embodiment 3：Endoscopic optical imaging system
The present embodiment is the improvement done on the basis of embodiment 2, and it is to increased optical signal on the basis of embodiment 2
Converting unit 104, optical signal control unit 105, graphics processing unit 106 and image-display units 107, its structural representation
As shown in figure 3, wherein, optical signal conversion unit 104 is glimmering for the visible ray receiving and near-infrared by image tactility apparatus 1032
Light is converted to the corresponding signal of telecommunication, and is processed into video data；Graphics processing unit 106 is used for receiving optical signal conversion unit
104 video datas obtaining；Optical signal control unit 105 is used for controlling optical signal launch unit 101 transmitting visible ray and near
Infrared excitation light, is additionally operable to arrange visible mode or near-infrared fluorescent pattern, graphics processing unit 106 is according to optical signal control
The pattern of unit 105 setting, selects to the video data of the visible ray receiving or the video data of near-infrared fluorescent
Reason, when the video data for visible ray, does not then process to video data, when the video data for near-infrared fluorescent, then right
Video data does lateral shift and processes (translation d) so as to location overlap with the video data of visible ray, and mark fluorescent area
Domain, does color background for non-fluorescence region and processes；Image-display units 107 are used for receiving graphics processing unit 106 and process
The video data arriving, obtains visible images or the fluoroscopic image with color background, and shows in real time, when video data is can
When seeing light data, obtain for visible images, when video data is for near-infrared fluorescent data, obtain for having the colored back of the body
The fluoroscopic image of scape.
Embodiment 4：Endoscopic optical imaging system
The present embodiment is on the basis of embodiment 2 or embodiment 3, to the image unit in embodiment 2 or embodiment 3
Structure is described in detail, and image unit includes：Optical signal processing unit and imageing sensor 1032, structural representation is as schemed
Shown in 4.Optical signal processing unit includes：Turnover spectrophotometric unit 1031 in embodiment 1, imageing sensor 1032 and turnover light splitting
The exit facet of unit 1031 is parallel, for receiving from the visible ray of another right-angle surface 12 outgoing of isosceles right-angle prism 1 and near
Infrared fluorescence.
Turnover spectrophotometric unit 1031 is identical with the turnover spectrophotometric unit in embodiment 1, unique except for the difference that plate glass 2
Afterwards plated surface set as semi-transparent semi-reflecting film, be used for making near-infrared fluorescent reflect, make near-infrared excitation light transmission.
The operation principle of the endoscopic optical imaging system of the present embodiment is：Due to visible ray (400nm～700nm) and closely
The wavelength of Infrared fluorescence (820nm～850nm) is different, cause its imaging focal plane position inconsistent it is impossible to pass in same image
The blur-free imaging of two kinds of light is obtained on sensor simultaneously, this utility model the light path of near-infrared fluorescent is changed so as to can
See that the light path of light is different, by the imaging focal plane position one so that two kinds of light is set accordingly to the thickness of plate glass 2
Cause, the blur-free imaging of two kinds of light can be obtained on same imageing sensor simultaneously, illustrate without flat board glass in such as Fig. 5 a
The imaging 01 (a, b) containing fluorescing fractions of glass reflection and through the imaging 01 ' containing fluorescing fractions for the plate glass reflection (a ',
B '), 01 ' (a ', b ') compares the hot spot of 01 (a, b) more greatly it is known that tissue to be detected is placed exactly in its imaging Jiao as can be seen from Figure
On face, imaging is apparent, but as can be seen from Figure 01 ' (a ', b ') with respect to 01 (a, b) transverse translation d, as long as by 01 '
(a ', b ') move d, that is, move to the corresponding position of 01 (a, b), you can the picture registration with visible ray to together with, as Fig. 5 b institute
Show.
Embodiment 5：Endoscopic optical imaging system
The present embodiment is the improvement done on the basis of embodiment 4, and the optical signal processing unit 103 of the present embodiment also wraps
Include：Optical coupler 1033, before optical coupler 1033 is located at turnover spectrophotometric unit 1031, for light signal collection unit
102 residual aberration (as spherical aberration, astigmatism etc.) compensates.In the present embodiment, optical coupler 1033 includes three lens, but
It is to be not limited thereto, the form of lens and quantity can require to carry out different settings according to optimizing.
Embodiment 6：Endoscopic optical imaging system
The present embodiment is on the basis of embodiment 5, gives a kind of tool of light signal collection unit 102 (i.e. endoscope)
Body example, this light signal collection unit 102 includes：Object lens 1021, transfer unit 1022 and the eyepiece 1023 being arranged in order, such as
Shown in Fig. 7, wherein, object lens 1021 include four lens units, and transfer unit 1022 includes odd number group rod-like mirror, and eyepiece 1023 wraps
Include two lens units, but be not limited thereto, in different embodiments, light signal collection unit 102 not necessarily include this three
Part, the form of lens of each section and quantity carry out different settings also dependent on needs.
Embodiment 7：Endoscopic optical imaging system
The present embodiment is on the basis of embodiment 5, gives a kind of instantiation of endoscopic imaging system, gives
The concrete set location of each unit, its structural representation is as shown in figure 8, optical signal launch unit is divided into two parts, positioned at phase
To both sides, from both sides respectively to certain region 100 transmitting visible ray and near-infrared excitation light of tissue to be detected, light signal collection
Unit 102 includes three lens units.The present embodiment has been merely given as a kind of mode of concrete setting, is not new to this practicality
The restriction of type, the position of unit and form can be configured as needed.
Disclosed herein is only preferred embodiment of the present utility model, and this specification is chosen and specifically described these enforcements
Example, is to preferably explain principle of the present utility model and practical application, is not to restriction of the present utility model.Any
The modifications and variations that skilled person is done in the range of description, all should fall in the range of this utility model is protected.
Claims (10)
1. a kind of turnover spectrophotometric unit is it is characterised in that described turnover spectrophotometric unit is used for incident first wave length light and the
Two wavelength light carry out light splitting closing light again, make first wave length light different with the light path of second wave length light, so make first wave length light and
The imaging focal plane position consistency of second wave length light；
First wave length light is different with the wavelength of second wave length light.
2. turnover spectrophotometric unit according to claim 1 is it is characterised in that include：Isosceles right-angle prism and plate glass,
Wherein,
Described plate glass is be arranged in parallel with the inclined-plane of described isosceles right-angle prism；
Described first wave length light and described second wave length light are transmitted into described etc. from a right-angle surface of described isosceles right-angle prism
Waist corner cube prism, the then inclined-plane light splitting through described isosceles right-angle prism, it is divided into described first wave length light and described second wave length
Light；The slant reflection through described isosceles right-angle prism for the described first wave length light；Described second wave length light is through described isosceles right-angled edge
The inclined-plane of mirror transmits described isosceles right-angle prism, incident from the face of the close described isosceles right-angle prism of described plate glass,
Through described plate glass another side reflection, sequentially pass through described plate glass the face of close described isosceles right-angle prism and
The inclined-plane of described isosceles right-angle prism is transmitted into described isosceles right-angle prism；Finally described first wave length and described second wave length
Transmit described isosceles right-angle prism from another right-angle surface of described isosceles right-angle prism.
3. turnover spectrophotometric unit according to claim 2 is it is characterised in that two right-angle surface of described isosceles right-angle prism are plated
There is anti-reflection film, be used for making described first wave length light and described second wave length light transmission；
The inclined-plane of described isosceles right-angle prism is coated with dichroic film, is used for making described first wave length light reflection, makes described second ripple
Long light transmission；
The one side of the close described isosceles right-angle prism of described plate glass is coated with anti-reflection film, is used for making described second wave length light saturating
Penetrate, the another side of described plate glass is coated with reflectance coating or semi-transparent semi-reflecting film, be used for making described second wave length light reflection.
4. turnover spectrophotometric unit according to claim 2 is it is characterised in that described isosceles right-angle prism and described flat board
It is glued together that glass passes through optical cement.
5. a kind of endoscopic optical imaging system is it is characterised in that include：Optical signal launch unit, light signal collection unit with
And image unit；Wherein,
Described optical signal launch unit is used for certain the field emission visible ray and near-infrared excitation light to tissue to be detected, so that
Described tissue to be detected is it will be seen that light reflects and make the near-infrared fluorescent group of described tissue to be detected to be excited by described near-infrared
Light excitation-emission goes out near-infrared fluorescent；
Described light signal collection unit is used for the visible ray through described Tissue reflectance to be detected for the collection and the near-infrared launched
Fluorescence；
Described image unit includes：Optical signal processing unit and imageing sensor；
Described optical signal processing unit is used for receiving visible ray and the near-infrared fluorescent of described light signal collection unit collection, and
It is processed, so that described visible ray is consistent with the imaging focal plane of described near-infrared fluorescent；Described optical signal processing unit
Including：Turnover spectrophotometric unit, described turnover spectrophotometric unit is the turnover spectrophotometric unit as described in any one of Claims 1-4；
Described image sensor is used for receiving visible ray and near-infrared fluorescent after described optical signal processing unit is processed.
6. endoscopic optical imaging system according to claim 5 it is characterised in that when described turnover spectrophotometric unit be as
During turnover spectrophotometric unit described in claim 2, described visible ray, described near-infrared excitation light and described near-infrared fluorescent from
One right-angle surface of described isosceles right-angle prism is transmitted into described isosceles right-angle prism, then oblique through described isosceles right-angle prism
Face light splitting；The slant reflection through described isosceles right-angle prism for the described visible ray；Described near-infrared excitation light and described near-infrared
The inclined-plane through described isosceles right-angle prism for the fluorescence transmits described isosceles right-angle prism, close described etc. from described plate glass
The face of waist corner cube prism is incident, and the another side through described plate glass for the described near-infrared fluorescent reflects, described near-infrared excitation light
Another side transmission through described plate glass, described near-infrared fluorescent sequentially passes through the close described isosceles of described plate glass
The inclined-plane of the face of corner cube prism and described isosceles right-angle prism is transmitted into described isosceles right-angle prism；Finally described visible ray
Transmit described isosceles right-angle prism with described near-infrared fluorescent from another right-angle surface of described isosceles right-angle prism；Further
Ground,
When described spectrophotometric unit of turning back is turnover spectrophotometric unit as claimed in claim 3, described plate glass away from institute
The one side stating isosceles right-angle prism is semi-transparent semi-reflecting film, is used for making described near-infrared fluorescent reflection, makes described near-infrared excitation light
Transmission.
7. endoscopic optical imaging system according to claim 5 is it is characterised in that described optical signal processing unit also wraps
Include：Optical coupler, described visible ray and near-infrared fluorescent first pass through described optical coupler, then through described turnover light splitting
Unit；
Described optical coupler includes one or more lens, and described optical coupler is used for eliminating described visible ray and described
The aberration of near-infrared fluorescent.
8. endoscopic optical imaging system according to claim 5 is it is characterised in that also include：Optical signal conversion unit,
Described optical signal conversion unit turns for the described visible ray receiving and described near-infrared fluorescent by described image sensor
It is changed to the corresponding signal of telecommunication, and be processed into video data.
9. endoscopic optical imaging system according to claim 8 is it is characterised in that also include：Graphics processing unit, institute
State graphics processing unit for receiving the described video data that described optical signal conversion unit obtains；Further,
Also include：Image-display units, described image display unit is used for receiving that described image processing unit processes obtain regards
Frequency evidence, obtains visible images or the fluoroscopic image with color background, and shows in real time, when described video data is visible
During the video data of light, obtain for visible images, when the video data that described video data is near-infrared fluorescent, obtain
The fluoroscopic image for having color background.
10. endoscopic optical imaging system according to claim 9 is it is characterised in that also include：Optical signal controls single
Unit, described optical signal control unit is used for controlling described optical signal launch unit transmitting visible ray and near-infrared excitation light；
Described optical signal control unit be additionally operable to control described image processing unit receive and process visible ray video data or
The video data of near-infrared fluorescent, when the video data for visible ray that described image processing unit receives, does not regard to described
Frequency according to processing, when the video data for near-infrared fluorescent that described image processing unit receives, to described video data
Do lateral shift and process the location overlap so as to the video data of visible ray, and mark fluorescent region, for non-fluorescence region
Do color background to process.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094224A (en) * | 2016-08-04 | 2016-11-09 | 上海凯利泰医疗科技股份有限公司 | A kind of turnover spectrophotometric unit and endoscopic optical imaging system, formation method |
| CN106646699A (en) * | 2017-03-09 | 2017-05-10 | 索尔思光电（成都）有限公司 | Prism and light transmit-receive assembly |
| CN107174215A (en) * | 2017-06-28 | 2017-09-19 | 上海凯利泰医疗科技股份有限公司 | A kind of spy fluorescence monitoring apparatus |
| CN114594585A (en) * | 2022-03-31 | 2022-06-07 | 歌尔光学科技有限公司 | Optical module and electronic equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106094224A (en) * | 2016-08-04 | 2016-11-09 | 上海凯利泰医疗科技股份有限公司 | A kind of turnover spectrophotometric unit and endoscopic optical imaging system, formation method |
| CN106094224B (en) * | 2016-08-04 | 2019-07-12 | 上海凯利泰医疗科技股份有限公司 | A kind of turnover spectrophotometric unit and endoscopic optical imaging system, imaging method |
| CN106646699A (en) * | 2017-03-09 | 2017-05-10 | 索尔思光电（成都）有限公司 | Prism and light transmit-receive assembly |
| CN107174215A (en) * | 2017-06-28 | 2017-09-19 | 上海凯利泰医疗科技股份有限公司 | A kind of spy fluorescence monitoring apparatus |
| CN114594585A (en) * | 2022-03-31 | 2022-06-07 | 歌尔光学科技有限公司 | Optical module and electronic equipment |
| CN114594585B (en) * | 2022-03-31 | 2023-11-10 | 歌尔光学科技有限公司 | Optical module and electronic equipment |
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Address after: 201201 Shanghai Pudong New Area Zhangjiang hi tech Park East area 528, 23, 2 floor. Patentee after: Shanghai Kinetic Medical Co., Ltd. Address before: 201201 Shanghai Pudong New Area Zhangjiang hi tech Park East area 528, 23, 1 floor. Patentee before: Shanghai Kinetic Medical Co., Ltd. |