CN105455768A - Electronic endoscope - Google Patents
Electronic endoscope Download PDFInfo
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- CN105455768A CN105455768A CN201510996753.7A CN201510996753A CN105455768A CN 105455768 A CN105455768 A CN 105455768A CN 201510996753 A CN201510996753 A CN 201510996753A CN 105455768 A CN105455768 A CN 105455768A
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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
- A61B1/042—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 characterised by a proximal camera, e.g. a CCD camera
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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
- A61B1/00188—Optical arrangements with focusing or zooming features
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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
- A61B1/045—Control thereof
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Abstract
The invention provides an electronic endoscope. According to the electronic endoscope, the space distance between an imaging lens group and a photosensitive assembly is adjusted through an axial position adjusting device, so that the electronic endoscope has the higher image distance adjusting function, therefore, the freedom degree of the electronic endoscope in the using process is greatly improved, and amplification observation can be achieved and a clear image can be obtained even if for a tiny observation target.
Description
Technical field
The present invention relates to technical field of medical instruments, particularly a kind of fujinon electronic video endoscope.
Background technology
Along with the fast development of Micro trauma medical skill, the fujinon electronic video endoscope integrating traditional optical endoscopic technique and the new and high technology such as the present computer technology, microelectric technique has become current application a kind of Medical Instruments widely.
Fujinon electronic video endoscope adopts charge coupled cell, and (English full name is ChargeCoupledDevice, be called for short CCD), (English full name is ComplementaryMetalOxideSemiconductor to complementary mos device, be called for short CMOS) etc. miniature solid imaging apparatus subject volume image is converted to the signal of telecommunication, and this signal of telecommunication is exported to outside monitor, make medical personnel can carry out image viewing on a monitor.Compare conventional endoscope, fujinon electronic video endoscope has that resolution is high, definition is high, without advantages such as visual field stains, easily distant surveillance and control simultaneously, and image processing techniques can be adopted to obtain important characteristic information, realize quantitative analysis and the Accurate Diagnosis of early stage focus.
Existing fujinon electronic video endoscope usually adopts and focuses optical system, and namely the camera lens of fujinon electronic video endoscope and the position of photo-sensitive cell are relatively changeless, and the object of observation is in the operating distance imaging of design.If design operating distance be 80mm, then when object and distance of camera lens are 80mm can on photo-sensitive cell blur-free imaging.
The camera lens of fujinon electronic video endoscope is usually designed to the imaging lens system that has less vertical axle amplification, is about to caught visual field is contracted to photo-sensitive cell size at image space place.But because the size of the pixel of photo-sensitive cell limits, the resolution of existing fujinon electronic video endoscope cannot improve further.In the face of precision target, when needs put it to and observe nearby, because object distance changes, image distance can change thereupon, therefore usually cannot obtain image clearly.
Summary of the invention
The object of the present invention is to provide a kind of fujinon electronic video endoscope, to solve the low problem of existing fujinon electronic video endoscope resolution.
For solving the problems of the technologies described above, the invention provides a kind of fujinon electronic video endoscope, described fujinon electronic video endoscope comprises: endoscope sleeve, at least one group of imaging lens group, at least one group of photosensory assembly and at least one group of axial position regulating device;
Described imaging lens group and photosensory assembly are all configured at the front end of described endoscope sleeve, described axial position regulating device is configured at the rear end of described endoscope sleeve, described axial position regulating device for driving described imaging lens group or photosensory assembly moving axially along described endoscope sleeve, to regulate the spacing of described imaging lens group and photosensory assembly.
Optionally, in described fujinon electronic video endoscope, also comprise lens fixing apparatus, described lens fixing apparatus comprises imaging lens group fixture, photosensory assembly fixture and front end clamping fixture, described photosensory assembly fixture is arranged between described imaging lens group fixture and front end clamping fixture, described imaging lens group fixture is fixedly connected with described imaging lens group, described photosensory assembly fixture is fixedly connected with described front end clamping fixture, described photosensory assembly is positioned at the space that described photosensory assembly fixture and front end clamping fixture limit.
Optionally, in described fujinon electronic video endoscope, described imaging lens group fixture, photosensory assembly fixture and front end clamping fixture are all fixedly connected with described endoscope sleeve, described photosensory assembly and described photosensory assembly fixture mobile link.
Optionally, in described fujinon electronic video endoscope, described imaging lens group fixture is fixedly connected with described endoscope sleeve, described photosensory assembly fixture, front end clamping fixture and described endoscope sleeve mobile link.
Optionally, in described fujinon electronic video endoscope, described imaging lens group fixture and described endoscope sleeve mobile link, described photosensory assembly fixture, front end clamping fixture are fixedly connected with described endoscope sleeve.
Optionally, in described fujinon electronic video endoscope, also comprise battery of lens connecting rod and battery of lens connecting rod fixture, one end of described battery of lens connecting rod is fixedly connected with described battery of lens connecting rod fixture, the other end of described battery of lens connecting rod is fixedly connected with described imaging lens group fixture with photosensory assembly fixture through the front end clamping fixture of described lens fixing apparatus, and described axial position regulating device is fixedly connected with described battery of lens connecting rod fixture.
Optionally, in described fujinon electronic video endoscope, described axial position regulating device comprises adjusting nut and metallic rod, described metallic rod one end is passed described front end clamping fixture and is connected with described photosensory assembly, the described metallic rod other end is fixedly connected with described adjusting nut, and described adjusting nut is threaded with described endoscope sleeve.
Optionally, in described fujinon electronic video endoscope, described axial position regulating device comprises groups of springs, tinsel and adjusting nut, described groups of springs is arranged between described photosensory assembly and described lens fixing apparatus, described one end wiry is connected with described photosensory assembly through described front end clamping fixture, the described other end wiry is fixedly connected with described adjusting nut, and described adjusting nut is threaded with described endoscope sleeve.
Optionally, in described fujinon electronic video endoscope, described axial position regulating device comprises motor and gear unit, and one end of described gear unit is connected with described motor, and the other end of described gear unit passes described front end clamping fixture and is connected with described photosensory assembly.
Optionally, in described fujinon electronic video endoscope, described motor is linear electric motors, and described gear unit is metallic rod, described metallic rod one end is passed described front end clamping fixture and is connected with described photosensory assembly, and the described metallic rod other end is fixedly connected with linear electric motors.
Optionally, in described fujinon electronic video endoscope, described motor is rotary electric machine, described gear unit comprises silk wheel and tinsel, one end of described silk wheel is connected with described rotary electric machine, the other end of described silk wheel is connected with described one end wiry, and the described other end wiry passes described front end clamping fixture and is connected with described photosensory assembly.
Optionally, in described fujinon electronic video endoscope, described motor is rotary electric machine, described gear unit comprises pair of nut and screw mandrel, described pair of nut is fixedly connected with described endoscope sleeve, one end of described screw mandrel is connected with described rotary electric machine, and the other end of described screw mandrel is connected with described photosensory assembly with front end clamping fixture through described pair of nut.
Optionally, in described fujinon electronic video endoscope, described motor is rotary electric machine, and described gear unit comprises gear and tooth bar, one end of described tooth bar is connected with described rotary electric machine, and the other end of described tooth bar passes described front end clamping fixture and is connected with described photosensory assembly.
Optionally, in described fujinon electronic video endoscope, described imaging lens group comprises the first imaging lens group and the second imaging lens group, described photosensory assembly comprises the first photosensory assembly and the second photosensory assembly, described axial position regulating device comprises the first axial position regulating device and the second axial position regulating device, described first imaging lens group, first photosensory assembly and the first axial position regulating device and described second imaging lens group, second photosensory assembly and the second axial position regulating device are symmetrical arranged, one end of described first axial position regulating device is passed described front end clamping fixture and is connected with described first photosensory assembly, one end of described second axial position regulating device is passed described front end clamping fixture and is connected with described second photosensory assembly.
Optionally, in described fujinon electronic video endoscope, described imaging lens group comprises the first imaging lens group and the second imaging lens group, described photosensory assembly comprises the first photosensory assembly and the second photosensory assembly, and described first imaging lens group and the first photosensory assembly and described second imaging lens group and the second photosensory assembly are symmetrical arranged; Described first photosensory assembly is all connected with described axial position regulating device with the second photosensory assembly.
Optionally, in described fujinon electronic video endoscope, also comprise the first groups of springs, second groups of springs, first fine-tuning nut and the second fine-tuning nut, described first groups of springs is arranged between described imaging lens group fixture and photosensory assembly fixture, described second groups of springs is arranged between described front end clamping fixture and the first photosensory assembly and between described front end clamping fixture and the second photosensory assembly, described first fine-tuning nut is fixedly connected with described first photosensory assembly through described front end clamping fixture, described second fine-tuning nut is fixedly connected with described second photosensory assembly through described front end clamping fixture.
Optionally, in described fujinon electronic video endoscope, described photosensory assembly comprises photo-sensitive cell and base, and described photo-sensitive cell is fixed on described base.
Optionally, in described fujinon electronic video endoscope, described axial position regulating device is connected with the centre of described base.
Optionally, in described fujinon electronic video endoscope, described lens fixing apparatus also comprises at least one guide rail, is provided with at least one locating hole in described imaging lens group fixture, and described guide rail passes described base along the primary optical axis direction of described imaging lens group and inserts in described locating hole.
Optionally, in described fujinon electronic video endoscope, described photo-sensitive cell adopts charge coupled cell or complementary mos device.
Optionally, in described fujinon electronic video endoscope, described imaging lens group comprises concavees lens, collimating lens, the first balsaming lens and the second balsaming lens, described concavees lens, collimating lens, the first balsaming lens and the second balsaming lens are arranged in order along the axis of described endoscope body.
Optionally, in described fujinon electronic video endoscope, described fujinon electronic video endoscope also comprises a cover glass, and described cover glass is positioned at the side of described imaging lens group away from described photosensory assembly.
In fujinon electronic video endoscope provided by the invention, the spacing of imaging lens group and photosensory assembly is regulated by axial position regulating device, described fujinon electronic video endoscope is made to have more powerful focusing function, thus drastically increase described fujinon electronic video endoscope degree of freedom in use, even if in the face of small object observing also can amplifying observation, and obtain image clearly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention one;
Fig. 2 is the vertical axle amplification of the imaging lens group of the embodiment of the present invention one and the graph of a relation of operating distance;
Fig. 3 is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention two;
Fig. 4 is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention three;
Fig. 5 is that the axial position regulating device of the embodiment of the present invention three adopts linear electric motors as the structural representation of driver element;
Fig. 6 is that the axial position regulating device of the embodiment of the present invention three adopts silk wheel and the structural representation of combinative structure wiry as gear unit;
Fig. 7 is the structural representation of combinative structure as gear unit that the axial position regulating device of the embodiment of the present invention three adopts pair of nut and screw mandrel;
Fig. 8 is the structural representation of combinative structure as gear unit of the axial position regulating device employing wheel and rack of the embodiment of the present invention three;
Fig. 9 is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention four;
Figure 10 is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention five;
Figure 11 is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention six.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the fujinon electronic video endoscope that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
[embodiment one]
Incorporated by reference to reference to figure 1, it is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention one.As shown in Figure 1, described fujinon electronic video endoscope 100 comprises: endoscope sleeve 110, imaging lens group 120, photosensory assembly 130 and axial position regulating device 150; Described imaging lens group 120 and photosensory assembly 130 are all configured at the front end of described endoscope sleeve 110, described axial position regulating device 150 is configured at the rear end of endoscope sleeve 110, described axial position regulating device 150 for driving described photosensory assembly 130 moving axially along described endoscope sleeve 110, to regulate the spacing of described imaging lens group 120 and photosensory assembly 130.
Concrete, described imaging lens group 120 is for object observing imaging.Described imaging lens group 120 is positioned at the front end of endoscope sleeve 110, and the axis of described endoscope sleeve 110 is consistent with the primary optical axis direction of described imaging lens group 120.The present invention has no particular limits described imaging lens group 120, and existing lens can be adopted to form, as long as described imaging lens group 120 can form image clearly.
Preferably, described imaging lens group 120 has fine definition, low aberration and high color rendition degree.
In the present embodiment, described imaging lens group 120 comprises concavees lens, collimating lens, the first balsaming lens and the second balsaming lens, described concavees lens, collimating lens, and the first balsaming lens and the second balsaming lens are arranged in order along the axis of described endoscope sleeve 110.Wherein, the data of each lens of described imaging lens group 120 please see the following form (Biao Zhong unit is mm):
Inventor finds, the vertical axle amplification of imaging lens group can change along with operating distance (i.e. object distance) usually.Please refer to Fig. 2, it is the vertical axle amplification of imaging lens group and the graph of a relation of operating distance.As shown in Figure 2, operating distance increases, and the absolute value of the vertical axle amplification of imaging lens group reduces, and operating distance reduces, and the absolute value of the vertical axle amplification of imaging lens group increases.
Such as, if the operating distance 80mm of imaging lens group design, namely when the distance of observed object and described imaging lens group 120 is 80mm can on described photo-sensitive cell 131 blur-free imaging, vertical axle amplification (PMAG when object distance is 80mm of described imaging lens group 120
80) equal-0.043918.At present, the size of the single pixel of described photo-sensitive cell 131 is generally 1.3 μm, the picture that the observed object that this means to be of a size of 30 microns becomes on described photo-sensitive cell 131, and size is just in time a pixel.As can be seen here, be the observed object of 1mm for length, photo-sensitive cell needs to carry out imaging by 33 pixels.According to calculating, described fujinon electronic video endoscope 100 is at the operating distance place of 80mm, and resolution pole is limited to 16lp/mm.
If position observed object be adjusted to apart from described imaging lens group 120 about 5mm is (according to Fig. 2, PMAG
5be about-0.6), regulated the spacing of described imaging lens group 120 and photosensory assembly 130 by axial position regulating device 150, can make its blur-free imaging, imaging resolution is about 90.5lp/mm.
Please continue to refer to Fig. 1, the optical imagery that described photosensory assembly 130 is formed for gathering described battery of lens 10, be positioned at described imaging lens group 120 rear end, it comprises photo-sensitive cell 131 and base 133, and described photo-sensitive cell 131 is fixedly connected with base 133.Wherein, the photosurface of described photo-sensitive cell 131 is vertical with the primary optical axis of described imaging lens group 120 towards described imaging lens group 120.Common, the primary optical axis direction of described imaging lens group 120 and the axial consistent of described endoscope sleeve 110 are vertical with the radial direction of described endoscope sleeve 110.
The light reflected for the target of observing is transferred on described photosensory assembly 130 after the imaging of described imaging lens group 120, optical imagery (i.e. optical signal) is converted to the signal of telecommunication by described photosensory assembly 130, and this signal of telecommunication is exported to outside monitor.In the present embodiment, (English full name is ChargeCoupledDevice to the charge coupled cell that described photo-sensitive cell 131 can adopt this area conventional, be called for short CCD) or complementary mos device (English full name is ComplementaryMetalOxideSemiconductor, is called for short CMOS).
In addition, described lens fixing apparatus 140 comprises imaging lens group fixture 141, photosensory assembly fixture 143 and front end clamping fixture 145, and the outer surface of described battery of lens fixture 141, photosensory assembly fixture 143 and front end clamping fixture 145 is all close to the inwall of described endoscope sleeve 110.Described photosensory assembly fixture 143 is arranged between described imaging lens group fixture 141 and front end clamping fixture 145, and the side of described photosensory assembly fixture 143 to be resisted against on described front end clamping fixture 145 and to be fixedly connected with described front end clamping fixture 145, described imaging lens group fixture 141 prevents mobile for fixing described imaging lens group 120, described photosensory assembly fixture 143 is for ensureing that described photosensory assembly 130 its photosurface and described imaging lens group 120 in translational adjustment process keep concentric (namely the central shaft of photosurface overlaps with the primary optical axis of described imaging lens group), described photosensory assembly 130 is configured in the space of photosensory assembly fixture 143 and front end clamping fixture 145 restriction, and can anterior-posterior translation.
Wherein, a through hole (not shown) is offered in described front end clamping fixture 145, described axial position regulating device 150 is connected by the base 133 of described through hole with described photosensory assembly 130, and described photosensory assembly 130 can along the axis of described endoscope sleeve 110 (i.e. the primary optical axis direction of described imaging lens group 120) translation back and forth under the effect of described axial position regulating device 150.
As shown in Figure 1, described axial position regulating device 150 comprises groups of springs 151, tinsel 153 and adjusting nut 155, one end of described tinsel 153 is connected with the centre of described base 133 through described front end clamping fixture 145, the other end of described tinsel 153 is connected with described adjusting nut 155, and described groups of springs 151 is arranged between described base 133 and front end clamping fixture 145.Wherein, described adjusting nut 155, as driver element, is threaded with described endoscope sleeve 110, and described groups of springs 151 and tinsel 153 are as gear unit.The translation backward of described tinsel 153 is driven by rotating described adjusting nut 155, and then drive the photosensory assembly 130 be connected with described tinsel 153 along the axially translation backward of described endoscope sleeve 110, make the groups of springs 151 be connected with described photosensory assembly 130 that deformation occur; When driving described adjusting nut 155 to move forward, due to the resilience of described groups of springs 151 and then drive described photosensory assembly 130 along the axial shifted forward of described endoscope sleeve 110, regulate image distance thus.
Wherein, described groups of springs 151 comprises multiple spring, and one end of described multiple spring is all connected with described base 133, and the other end of described multiple spring is all connected with described front end clamping fixture 145.Obviously, spring of the present invention, should meet the length that is in free state and the limiting length being in elongated condition contain image distance regulate needed for the requirement of scope (i.e. the distance of described photosensory assembly 130 translation back and forth).
Preferably, the length that described multiple spring is in free state is all equal with the limiting length being in compressive state, and is symmetric centered by the through hole of described front end clamping fixture 145.
In the present embodiment, described groups of springs 151 is arranged between described base 133 and front end clamping fixture 145.In other embodiments of the invention, described groups of springs 151 also can be arranged between described base 133 and imaging lens group fixture 141.
In order to ensure that described photosensory assembly 130 is in translational adjustment process, its photosurface keeps vertical with described imaging lens group 120 primary optical axis all the time, at least one locating hole (not shown) is provided with in described imaging lens group fixture 141, also be provided with at least one guide rail (not shown) between described imaging lens group fixture 141 and front end clamping fixture 145, described guide rail passes the base 133 of described photosensory assembly 130 along the primary optical axis direction of described imaging lens group and inserts in the locating hole of described imaging lens group fixture 141.
Described fujinon electronic video endoscope 100 also comprises a cover glass 160, and described cover glass 160 is positioned at the side of described imaging lens group 120 away from described photosensory assembly 130.In use, described cover glass 160, in the face of observed objects, can prevent observed objects from polluting described imaging lens group 120, cause lens blur described fujinon electronic video endoscope 100.
In the present embodiment, described in described fujinon electronic video endoscope 100, the position of photosensory assembly 130 is adjustable, therefore the spacing of described imaging lens group 120 and photosensory assembly 130, and namely image distance is variable.For small observed object, need to change object distance, put it to when observing nearby, as long as regulate described imaging lens group 120 just can make its blur-free imaging with the spacing of photosensory assembly 130 by described axial position regulating device 150.
Relative to traditional fujinon electronic video endoscope, described fujinon electronic video endoscope 100 is owing to being provided with axial position regulating device 150, the spacing of described imaging lens group 120 and photosensory assembly 130 is regulated by axial position regulating device 150, described fujinon electronic video endoscope 100 can be made to have stronger adjustment image distance function, thus greatly improve system to the resolution capability of small items.Because the precision of observing improves greatly, therefore, it is possible to allow the details of user clearly observed objects.
In the present embodiment, described axial position regulating device 150 is manual regulating device, utilize described axial position regulating device 150 that described photosensory assembly 130 can be driven to move around, thus regulate the distance between described photosensory assembly 130 and described imaging lens group 120, thus drastically increase described fujinon electronic video endoscope 100 degree of freedom in use, also can amplifying observation even if do not change objective system in the face of precision target, realize high definition imaging, thus meet the application demand of medical consultations.
[embodiment two]
Please refer to Fig. 3, it is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention two.As shown in Figure 3, described fujinon electronic video endoscope 200 comprises: endoscope sleeve 110, imaging lens group 120, photosensory assembly 130 and axial position regulating device 150.Similar to embodiment one, described imaging lens group 120 and photosensory assembly 130 are all configured at the front end of described endoscope sleeve 110, described axial position regulating device 150 is configured at the rear end of described endoscope sleeve 110, described axial position regulating device 150 for driving described imaging lens group 120 moving axially along described endoscope sleeve 110, to regulate the spacing of described imaging lens group 120 and photosensory assembly 130.Equally, described fujinon electronic video endoscope 200 also comprises lens fixing apparatus 140, makes photosensory assembly 130 coaxial translation wherein for fixing described imaging lens group 120 and forming the restricted quarter.
Concrete, described axial position regulating device 150 comprises adjusting nut 155 and metallic rod 157, described metallic rod 157 one end is connected with described photosensory assembly 130 through described front end clamping fixture 145, and described metallic rod 157 other end is connected with adjusting nut 155.Wherein, described adjusting nut 155 is as driver element, be threaded with described endoscope sleeve 110, described metallic rod 157 is as gear unit, described metallic rod 157 is driven to move around by rotating described adjusting nut 155, and then make described photosensory assembly 130 along the axially translation back and forth of described endoscope sleeve 110, image distance can be regulated thus.
The present embodiment and embodiment one difference are, described axial position regulating device 150 adopts metallic rod 157 to replace groups of springs and combinative structure wiry as actuated element, because described metallic rod 157 belongs to the part of rigidity, therefore can provide power to former and later two directions along the axis of described endoscope sleeve 110 simultaneously.Compared to the tinsel of flexibility, described metallic rod 157 is without the need to coordinating the translation transmission effect that just can realize forward or backward with groups of springs.Therefore, the internal structure of described fujinon electronic video endoscope 200 more simplifies.
[embodiment three]
Please refer to Fig. 4, it is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention three.As shown in Figure 4, described fujinon electronic video endoscope 300 comprises: endoscope sleeve 110, imaging lens group 120, photosensory assembly 130 and axial position regulating device 150.Similar to embodiment one, described imaging lens group 120 and photosensory assembly 130 are all configured at the front end of described endoscope sleeve 110, described axial position regulating device 150 is configured at the rear end of described endoscope sleeve 110, described axial position regulating device 150 for driving described photosensory assembly 130 moving axially along described endoscope sleeve 110, to regulate the spacing of described imaging lens group 120 and photosensory assembly 130.Equally, described fujinon electronic video endoscope 300 also comprises lens fixing apparatus 140, makes photosensory assembly 130 coaxial translation wherein for fixing described imaging lens group 120 and forming the restricted quarter.
Concrete, described axial position regulating device 150 comprises motor and gear unit, and one end of described gear unit is connected with described motor, and the other end of described gear unit is connected with described photosensory assembly 130 through described lens fixing apparatus 140.Described machine operation drives described gear unit to move, and then drives described photosensory assembly 130 along the axially translation back and forth of described endoscope sleeve 110.
Described motor can adopt linear electric motors, also can adopt rotary electric machine.When adopting linear electric motors, the gear unit coordinated with described linear electric motors is generally metallic rod, and described linear electric motors directly control the axially back and forth translation of metallic rod along described endoscope sleeve 110.
Incorporated by reference to reference to figure 4 and Fig. 5, linear electric motors are adopted to comprise linear electric motors 152 and metallic rod 157 as the axial position regulating device 150 of driver element, described metallic rod 157 one end is connected with described photosensory assembly 130 through described front end clamping fixture 145, and described metallic rod 157 other end is connected with linear electric motors 152.Wherein, described linear electric motors 152 are as driver element, and described metallic rod 157 is as gear unit, and described linear electric motors 152 drive described metallic rod 157 to move around, and then make described photosensory assembly 130 along the axially translation back and forth of described endoscope sleeve 110, image distance can be regulated thus.
When adopting rotary electric machine, the gear unit coordinated with described rotary electric machine can be that silk is taken turns and the combinative structure of combinative structure wiry, pair of nut and screw mandrel or the combinative structure etc. of wheel and rack, as long as convert rotational motion can be become the translational motion of the axis along described endoscope sleeve 110 with the gear unit that described rotary electric machine coordinates.
Incorporated by reference to reference to figure 4 and Fig. 6, it is that the axial position regulating device of the embodiment of the present invention three adopts silk wheel and the structural representation of combinative structure wiry as gear unit.As shown in Figure 6, adopt that silk wheel and combinative structure wiry comprise rotary electric machine 152 as the axial position regulating device 150 of gear unit, silk take turns 154, tinsel 153 and groups of springs (not shown), one end of described silk wheel 154 is connected with described rotary electric machine 152, the other end of described silk wheel 154 is connected with one end of described tinsel 153, the other end of described tinsel 153 is connected with described photosensory assembly 130 through described front end clamping fixture 145, and described groups of springs is arranged between described base 133 and front end clamping fixture 145.Wherein, described rotary electric machine 152 is as driver element, described groups of springs, silk wheel 154 and tinsel 153 are as gear unit, described rotary electric machine 152 rotarily drives described silk wheel 154 and rotates thereupon, described silk wheel 154 drives described tinsel 153 to move when rotating, the straight length of described tinsel 153 is changed, and then drives described photosensory assembly 130 along the axially translation backward of described endoscope sleeve 110, make the groups of springs generation deformation be connected with described photosensory assembly 130; When described rotary electric machine 152 reversely rotates, due to described groups of springs resilience and then drive described photosensory assembly 130 along the axial shifted forward of described endoscope sleeve 110, regulate image distance thus.To the requirement of the groups of springs of this enforcement and the groups of springs of configuration and embodiment one similar.
Incorporated by reference to reference to figure 4 and Fig. 7, the combinative structure of pair of nut and screw mandrel is adopted to comprise rotary electric machine 152 as the axial position regulating device 150 of gear unit, pair of nut 156 and screw mandrel 158, described rotary electric machine 152 is as driver element, described pair of nut 156 and screw mandrel 158 are as gear unit, described pair of nut is fixedly connected with endoscope sleeve, one end of described screw mandrel 158 is connected with described rotary electric machine 152, the other end of described screw mandrel 158 is through described pair of nut, described front end clamping fixture 145 is connected with described photosensory assembly 130, described pair of nut 156 coordinates with described screw mandrel 158, for the convert rotational motion of described screw mandrel 158 is become axial translational motion.
When described rotary electric machine 152 rotates, the convert rotational motion of described screw mandrel 158 is become axial translational motion by described pair of nut 156, and then drives described photosensory assembly 130 along the axially translation back and forth of described endoscope sleeve 110, regulates image distance thus.
Incorporated by reference to reference to figure 4 and Fig. 8, the combinative structure of wheel and rack is adopted to comprise rotary electric machine 152 as the axial position regulating device 150 of gear unit, gear 157 and tooth bar 159, described rotary electric machine 152 is as driver element, the combinative structure of described gear 157 and tooth bar 159 is as gear unit, one end of described tooth bar 159 is connected with described rotary electric machine 152, the other end of described tooth bar 159 is connected with described photosensory assembly 130 through described front end clamping fixture 145, described gear 157 coordinates with described screw mandrel 158, for the convert rotational motion of described tooth bar 159 is become axial translational motion.
When described rotary electric machine 152 rotates, the convert rotational motion of described tooth bar 159 is become axial translational motion by described gear 157, and then drives described photosensory assembly 130 along the axially translation back and forth of described endoscope sleeve 110, regulates image distance thus.
The present embodiment and embodiment one difference are, described axial position regulating device 150 is electric adjusting device, and described fujinon electronic video endoscope 300 can regulate image distance automatically.In the process automatically regulated, the contrast of current imaging effect can be read in real time by software, stop when the contrast of image reaches the highest regulating.Adopt electric adjusting device to regulate image distance, greatly can improve the automaticity of described fujinon electronic video endoscope 300.
[embodiment four]
Please refer to Fig. 9, it is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention four.As shown in Figure 9, described fujinon electronic video endoscope 400 comprises: endoscope sleeve 110, two groups of imaging lens group 120, two groups of photosensory assemblies 130 and two groups of axial position regulating devices 150.Similar with embodiment one, described imaging lens group 120 and photosensory assembly 130 are all configured at the front end of described endoscope sleeve 110 by described lens fixing apparatus 140, described axial position regulating device 150 is configured at the rear end of described endoscope sleeve 110, described axial position regulating device 150 for driving described photosensory assembly 130 moving axially along described endoscope sleeve 110, to regulate the spacing of described imaging lens group 120 and photosensory assembly 130.Equally, described fujinon electronic video endoscope 400 also comprises lens fixing apparatus 140, makes photosensory assembly 130 coaxial translation wherein for fixing described imaging lens group 120 and forming the restricted quarter.
Concrete, described imaging lens group 120 comprises the first imaging lens group 120a and the second imaging lens group 120b, described photosensory assembly 130 comprises the first photosensory assembly 130a and the second photosensory assembly 130b, described axial position regulating device 150 comprises the first axial position regulating device 150a and the second axial position regulating device 150b, described first imaging lens group 120a, first photosensory assembly 130a and the first axial position regulating device 150a and described second imaging lens group 120b, second photosensory assembly 130b and the second axial position regulating device 150b is symmetrical arranged, one end of described first axial position regulating device 150a is connected with described first photosensory assembly 130a through described front end clamping fixture 145, one end of described second axial position regulating device 150b is connected with described second photosensory assembly 130b through described front end clamping fixture 145.
Wherein, described first axial position regulating device 150a and the second axial position regulating device 150b can adopt manual regulating device as above or electric adjusting device.Preferably, described first axial position regulating device 150a is identical with the structure of the second axial position regulating device 150b.
The difference of the present embodiment and embodiment one is, has installed two cover imaging and regulating systems, form binocular vision system, therefore, it is possible to realize the effect of three-dimensional imaging in described fujinon electronic video endoscope sleeve 110.Wherein, two cover imagings and regulating system are separate, and often cover imaging and regulating system can regulate separately.
[embodiment five]
Please refer to Figure 10, it is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention five.As shown in Figure 10, described fujinon electronic video endoscope 500 comprises: endoscope sleeve 110, two groups of imaging lens group 120, two groups of photosensory assemblies 130 and axial position regulating device 150; Described imaging lens group 120 and photosensory assembly 130 are all configured at the front end of described endoscope sleeve 110, described axial position regulating device 150 is configured at the rear end of described endoscope sleeve 110, described axial position regulating device 150 for driving described photosensory assembly 130 moving axially along described endoscope sleeve 110, to regulate the spacing of described imaging lens group 120 and photosensory assembly 130.
Concrete, described fujinon electronic video endoscope 400 also comprises lens fixing apparatus 140, described lens fixing apparatus 140 comprises imaging lens group fixture 141, photosensory assembly fixture 143 and front end clamping fixture 145, described battery of lens fixture 141 outer surface is close to the inwall of described endoscope sleeve 110, and the outer surface of photosensory assembly fixture 143 and front end clamping fixture 145 all adjoins with the inwall of described endoscope sleeve 110.Described photosensory assembly fixture 143 is arranged between described imaging lens group fixture 141 and front end clamping fixture 145, and the side of described photosensory assembly fixture 143 to be resisted against on described front end clamping fixture 145 and to be fixedly connected with described front end clamping fixture 145, described imaging lens group fixture 141 prevents mobile for fixing described imaging lens group 120, and described photosensory assembly 130 is configured in the space of photosensory assembly fixture 143 and front end clamping fixture 145 restriction.
Described imaging lens group 120 comprises the first imaging lens group 120a and the second imaging lens group 120b, described photosensory assembly 130 comprises the first photosensory assembly 130a and the second photosensory assembly 130b, and described first imaging lens group 120a and the first photosensory assembly 130a and described second imaging lens group 120b and the second photosensory assembly 130b is symmetrical arranged.
As shown in Figure 10, described fujinon electronic video endoscope 500 also comprises the first groups of springs 171, second groups of springs 173, first fine-tuning nut 175 and the second fine-tuning nut 177, described first groups of springs 171 is arranged between described imaging lens group fixture 141 and photosensory assembly fixture 143, described second groups of springs 173 is arranged between described front end clamping fixture 145 and the first photosensory assembly 130a and between described front end clamping fixture 145 and the second photosensory assembly 130b, described first fine-tuning nut 175 and the second fine-tuning nut 177 are threaded with front end clamping fixture 145, described first fine-tuning nut 175 is connected with described first photosensory assembly 130a through described front end clamping fixture 145, described second fine-tuning nut 177 is connected with described second photosensory assembly 130b through described front end clamping fixture 145.
The micromatic setting that described first groups of springs 171, second groups of springs 173 and fine-tuning nut 175 form is used for adjusting the distance between described first photosensory assembly 130a and the first imaging lens group 120a and described second photosensory assembly 130b and the second imaging lens group 120b respectively.
To assemble and in use procedure at described fujinon electronic video endoscope 500, the fine-tuning nut 175 be fixedly connected with described first photosensory assembly 130a by rotation can adjust the distance between described first photosensory assembly 130a and the first imaging lens group 120a in advance, and the fine-tuning nut 175 be fixedly connected with described second photosensory assembly 130b by rotation can adjust the distance between described second photosensory assembly 130b and the second imaging lens group 120b in advance.
Described axial position regulating device 150 can adopt manual regulating device as above or electric adjusting device, described axial position regulating device 150 is connected with described front end clamping fixture 145, drive described photosensory assembly 130 along the axially translation back and forth of described endoscope sleeve 110, regulate image distance thus.
Two cover imaging systems are installed in described fujinon electronic video endoscope 500, have formed binocular vision system, therefore, it is possible to realize the effect of three-dimensional imaging.And, micromatic setting is provided with in described fujinon electronic video endoscope 500, utilize described micromatic setting can adjust distance between described first photosensory assembly 130a and the first imaging lens group 120a and described second photosensory assembly 130b and the second imaging lens group 120b respectively, thus eliminate the difference that two visual fields lens used cause because of manufacturing process.
The difference of the present embodiment and embodiment four is, only install a set of regulating system in described fujinon electronic video endoscope sleeve 110, the reliability of whole system is higher.
[embodiment six]
Please refer to Figure 11, it is the structural representation of the fujinon electronic video endoscope of the embodiment of the present invention six.As shown in figure 11, described fujinon electronic video endoscope 600 comprises: endoscope sleeve 110, imaging lens group 120, photosensory assembly 130 and axial position regulating device 150; Described imaging lens group 120 and photosensory assembly 130 are all configured at the front end of described endoscope sleeve 110, described axial position regulating device 150 is configured at the rear end of described endoscope sleeve 110, described axial position regulating device 150 for driving described imaging lens group 120 moving axially along described endoscope sleeve 110, to regulate the spacing of described imaging lens group 120 and photosensory assembly 130.
Concrete, described fujinon electronic video endoscope 600 also comprises described lens fixing apparatus 140.Described lens fixing apparatus 140 comprises imaging lens group fixture 141, photosensory assembly fixture 143 and front end clamping fixture 145, described battery of lens fixture 141 adjoins with the inwall of described endoscope sleeve 110, and the outer surface of photosensory assembly fixture 143 and front end clamping fixture 145 is all close to the inwall of described endoscope sleeve 110.Described photosensory assembly fixture 143 is arranged between described imaging lens group fixture 141 and front end clamping fixture 145, and the side of described photosensory assembly fixture 143 to be resisted against on described front end clamping fixture 145 and to be fixedly connected with described front end clamping fixture 145, described imaging lens group fixture 141 prevents mobile for fixing described imaging lens group 120, and described photosensory assembly 130 is configured in the space of photosensory assembly fixture 143 and front end clamping fixture 145 restriction.Described imaging lens group 120 and the translation in the space that photosensory assembly fixture 143 and front end clamping fixture 145 limit of described battery of lens fixture 141.
Described fujinon electronic video endoscope 600 also comprises at least one battery of lens connecting rod 181 and battery of lens connecting rod fixture 183, one end of described battery of lens connecting rod 181 is fixedly connected with described battery of lens connecting rod fixture 183, the other end of described battery of lens connecting rod 181 is fixedly connected with described imaging lens group fixture 141 through photosensory assembly fixture 143, front end clamping fixture 145, and described axial position regulating device 150 is connected with described battery of lens connecting rod fixture 183.
Described axial position regulating device 150 can adopt manual regulating device as above or electric adjusting device, described axial position regulating device 150 drives by the axially translation back and forth along described endoscope sleeve 110 of described battery of lens connecting rod 181 and battery of lens connecting rod fixture 183, and then drive described imaging lens group 120 along the axially translation back and forth of described endoscope sleeve 110, make the spacing of described imaging lens group 120 and photosensory assembly 130, namely image distance changes.
The difference of the present embodiment and embodiment one is, the axial position regulating device 150 of described fujinon electronic video endoscope 600 is connected with imaging lens group 120 with battery of lens connecting rod fixture 183 by described battery of lens connecting rod 181, instead of is directly connected with photosensory assembly 130.Described axial position regulating device 150 drives described imaging lens group 120 to move around, and then regulates the spacing of described imaging lens group 120 and photosensory assembly 130.
It should be noted that, in this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment same or similar part mutually see.
The front end of the endoscope sleeve 110 described in the present invention refers to the one end near observed object.Accordingly, the one end away from observed object is rear end.
To sum up, in the fujinon electronic video endoscope that the embodiment of the present invention provides, the spacing of imaging lens group and photosensory assembly is regulated by axial position regulating device, described fujinon electronic video endoscope is made to have more powerful focusing function, thus drastically increase described fujinon electronic video endoscope degree of freedom in use, even if in the face of small object observing also can amplifying observation, and obtain image clearly.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (22)
1. a fujinon electronic video endoscope, is characterized in that, comprising: endoscope sleeve, at least one group of imaging lens group, at least one group of photosensory assembly and at least one group of axial position regulating device;
Described imaging lens group and photosensory assembly are all configured at the front end of described endoscope sleeve, described axial position regulating device is configured at the rear end of described endoscope sleeve, described axial position regulating device for driving described imaging lens group or photosensory assembly moving axially along described endoscope sleeve, to regulate the spacing of described imaging lens group and photosensory assembly.
2. fujinon electronic video endoscope as claimed in claim 1, it is characterized in that, also comprise lens fixing apparatus, described lens fixing apparatus comprises imaging lens group fixture, photosensory assembly fixture and front end clamping fixture, described photosensory assembly fixture is arranged between described imaging lens group fixture and front end clamping fixture, described imaging lens group fixture is fixedly connected with described imaging lens group, described photosensory assembly fixture is fixedly connected with described front end clamping fixture, described photosensory assembly is positioned at the space that described photosensory assembly fixture and front end clamping fixture limit.
3. fujinon electronic video endoscope as claimed in claim 2, it is characterized in that, described imaging lens group fixture, photosensory assembly fixture and front end clamping fixture are all fixedly connected with described endoscope sleeve, described photosensory assembly and described photosensory assembly fixture mobile link.
4. fujinon electronic video endoscope as claimed in claim 2, it is characterized in that, described imaging lens group fixture is fixedly connected with described endoscope sleeve, described photosensory assembly fixture, front end clamping fixture and described endoscope sleeve mobile link.
5. fujinon electronic video endoscope as claimed in claim 2, it is characterized in that, described imaging lens group fixture and described endoscope sleeve mobile link, described photosensory assembly fixture, front end clamping fixture are fixedly connected with described endoscope sleeve.
6. as right wants the fujinon electronic video endoscope as described in 5, it is characterized in that, also comprise battery of lens connecting rod and battery of lens connecting rod fixture, one end of described battery of lens connecting rod is fixedly connected with described battery of lens connecting rod fixture, the other end of described battery of lens connecting rod is fixedly connected with described imaging lens group fixture with after the clamping fixture of front end through described photosensory assembly fixture, and described axial position regulating device is connected with described battery of lens connecting rod fixture.
7. fujinon electronic video endoscope as claimed in claim 2, it is characterized in that, described axial position regulating device comprises adjusting nut and metallic rod, described metallic rod one end is passed described front end clamping fixture and is connected with described photosensory assembly, the described metallic rod other end is connected with described adjusting nut, and described adjusting nut is threaded with described endoscope sleeve.
8. fujinon electronic video endoscope as claimed in claim 2, it is characterized in that, described axial position regulating device comprises groups of springs, tinsel and adjusting nut, described groups of springs is arranged between described photosensory assembly and described lens fixing apparatus, described one end wiry is connected with described photosensory assembly through described front end clamping fixture, the described other end wiry is connected with described adjusting nut, and described adjusting nut is threaded with described endoscope sleeve.
9. fujinon electronic video endoscope as claimed in claim 2, it is characterized in that, described axial position regulating device comprises motor and gear unit, and one end of described gear unit is connected with described motor, and the other end of described gear unit passes described front end clamping fixture and is connected with described photosensory assembly.
10. fujinon electronic video endoscope as claimed in claim 9, it is characterized in that, described motor is linear electric motors, and described gear unit is metallic rod, described metallic rod one end is passed described front end clamping fixture and is connected with described photosensory assembly, and the described metallic rod other end is connected with linear electric motors.
11. fujinon electronic video endoscopes as claimed in claim 9, it is characterized in that, described motor is rotary electric machine, described gear unit comprises silk wheel and tinsel, one end of described silk wheel is connected with described rotary electric machine, the other end of described silk wheel is connected with described one end wiry, and the described other end wiry passes described front end clamping fixture and is connected with described photosensory assembly.
12. fujinon electronic video endoscopes as claimed in claim 9, it is characterized in that, described motor is rotary electric machine, described gear unit comprises pair of nut and screw mandrel, described pair of nut is fixedly connected with described endoscope sleeve, one end of described screw mandrel is connected with described rotary electric machine, and the other end of described screw mandrel is connected with described photosensory assembly with front end clamping fixture through described pair of nut.
13. fujinon electronic video endoscopes as claimed in claim 9, it is characterized in that, described motor is rotary electric machine, described gear unit comprises gear and tooth bar, one end of described tooth bar is connected with described rotary electric machine, and the other end of described tooth bar passes described front end clamping fixture and is connected with described photosensory assembly.
14. fujinon electronic video endoscopes as claimed in claim 2, it is characterized in that, described imaging lens group comprises the first imaging lens group and the second imaging lens group, described photosensory assembly comprises the first photosensory assembly and the second photosensory assembly, described axial position regulating device comprises the first axial position regulating device and the second axial position regulating device, described first imaging lens group, first photosensory assembly and the first axial position regulating device and described second imaging lens group, second photosensory assembly and the second axial position regulating device are symmetrical arranged, one end of described first axial position regulating device is passed described front end clamping fixture and is connected with described first photosensory assembly, one end of described second axial position regulating device is passed described front end clamping fixture and is connected with described second photosensory assembly.
15. fujinon electronic video endoscopes as claimed in claim 2, it is characterized in that, described imaging lens group comprises the first imaging lens group and the second imaging lens group, described photosensory assembly comprises the first photosensory assembly and the second photosensory assembly, and described first imaging lens group and the first photosensory assembly and described second imaging lens group and the second photosensory assembly are symmetrical arranged; Described first photosensory assembly is all connected with described axial position regulating device with the second photosensory assembly.
16. fujinon electronic video endoscopes as claimed in claim 15, it is characterized in that, also comprise the first groups of springs, second groups of springs, first fine-tuning nut and the second fine-tuning nut, described first groups of springs is arranged between described imaging lens group fixture and photosensory assembly fixture, described second groups of springs is arranged between described front end clamping fixture and the first photosensory assembly and between described front end clamping fixture and the second photosensory assembly, described first fine-tuning nut and the second fine-tuning nut are threaded with described front end clamping fixture, described first fine-tuning nut is connected with described first photosensory assembly through described front end clamping fixture, described second fine-tuning nut is connected with described second photosensory assembly through described front end clamping fixture.
17. fujinon electronic video endoscopes as claimed in claim 1, it is characterized in that, described photosensory assembly comprises photo-sensitive cell and base, and described photo-sensitive cell is fixed on described base.
18. fujinon electronic video endoscopes as claimed in claim 17, it is characterized in that, described axial position regulating device is connected with the centre of described base.
19. fujinon electronic video endoscopes as claimed in claim 17, it is characterized in that, described lens fixing apparatus also comprises at least one guide rail, be provided with at least one locating hole in described imaging lens group fixture, described guide rail passes described base along the primary optical axis direction of described imaging lens group and inserts in described locating hole.
20. fujinon electronic video endoscopes as claimed in claim 17, is characterized in that, described photo-sensitive cell adopts charge coupled cell or complementary mos device.
21. fujinon electronic video endoscopes as claimed in claim 1, it is characterized in that, described imaging lens group comprises concavees lens, collimating lens, the first balsaming lens and the second balsaming lens, described concavees lens, collimating lens, the first balsaming lens and the second balsaming lens are arranged in order along the axis of described endoscope body.
22. fujinon electronic video endoscopes as claimed in claim 1, it is characterized in that, described fujinon electronic video endoscope also comprises a cover glass, and described cover glass is positioned at the side of described imaging lens group away from described photosensory assembly.
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| CN110749990A (en) * | 2019-11-01 | 2020-02-04 | 江苏欧曼电子设备有限公司 | Focal length adjusting device for optical endoscope |
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| CN111528771B (en) * | 2020-03-27 | 2022-02-18 | 浙江大学 | Electronic endoscope imaging objective lens zooming adjusting mechanism |
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| CN105455768B (en) | 2018-07-20 |
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Address after: Room 101, block B, building 1, No. 1601, Zhangdong Road, China (Shanghai) pilot Free Trade Zone, Pudong New Area, Shanghai, 201203 Patentee after: Shanghai minimally invasive medical robot (Group) Co.,Ltd. Address before: 201203, 501, Newton Road, Zhangjiang hi tech park, Shanghai, Pudong New Area Patentee before: Microport (Shanghai) Medbot Co.,Ltd. |