CN107561677A - The continuous vari-focus illuminator of surgical operation microscope - Google Patents
The continuous vari-focus illuminator of surgical operation microscope Download PDFInfo
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- CN107561677A CN107561677A CN201710741015.7A CN201710741015A CN107561677A CN 107561677 A CN107561677 A CN 107561677A CN 201710741015 A CN201710741015 A CN 201710741015A CN 107561677 A CN107561677 A CN 107561677A
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- 230000003287 optical effect Effects 0.000 claims abstract description 32
- 238000005286 illumination Methods 0.000 claims abstract description 15
- 230000008030 elimination Effects 0.000 abstract 1
- 238000003379 elimination reaction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 21
- 238000003384 imaging method Methods 0.000 description 8
- 238000009738 saturating Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000005304 optical glass Substances 0.000 description 3
- 230000011514 reflex Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of continuous vari-focus illuminator of surgical operation microscope, it is engaged with the zoom cam with the first cam curve and the second cam curve, including the first lens, the second lens, the 3rd lens and the 4th lens group configured successively along central optical axis；First lens are preceding fixed group, are positive power lens；Second lens are zoom group, are negative-power lenses；3rd lens are compensation group, are negative-power lenses；4th lens group fixes group after being；Zoom cam rotation drives second, third lens while moved between the first lens and the 4th lens group along central optical axis so that the linear consecutive variations of system focal length value, second lens move according to the rule of the first cam curve, 3rd lens move according to the rule of the second cam curve, first cam curve is linearity curve, and the second cam curve is exponential curve.The drawbacks of needing individually to control illumination zone and unadjustable illuminator working distance during present invention elimination surgical operation microscope use.
Description
Technical field
The invention belongs to illuminator technical field, it is related to a kind of continuous vari-focus illuminator of surgical operation microscope.
Background technology
Illuminator is the important component of operating microscope system, and traditional illumination system is imaged in surgical operation microscope is
Unite low enlargement ratio when, if illumination region just covers visual field；Then when being imaged system magnification increase, visual field diminishes, but
Illumination region is constant, causes contrast to decline, and is not easy to see target clearly.
Existing surgical operation microscope illuminator is the A of CN 103091823 just like notification number, entitled " to be used for stereoscopic micro-
Disclosed in the illuminating device of mirror particularly surgical operation microscope ", there is at least one light source, first collector lens system, aperture
Diaphragm, second condenser lens system and object lens, illumination light pass through first collector lens system, aperture diaphragm, the second optically focused from light source
Mirror system and object lens are directed into object plane, and aperture diaphragm is provided as spectacle plate or four orifice plates.The photograph of this kind of structure
Funerary objects part can effectively obtain red reflex, still, because it can not adjust illumination region, when imaging system operating distance reduces
When, it is possible to create the danger for affected part tissue of burning；When operating distance is big, the energy that may be illuminated is inadequate.
To realize that surgical operation microscope illuminator can adjust illumination region, certainly will need to introduce zoom lens control device, it is existing
Zoom lens control device just like Application No. 200610068032.0 Chinese invention patent, by driven during zoom cam rotation it is related thoroughly
Microscope group movement is to reach the purpose of zoom.
The content of the invention
(1) goal of the invention
The purpose of the present invention is：There is provided a kind of illumination zone, working distance adjustable illuminator, to overcome traditional operation
The drawbacks of needing individually to control illumination zone and unadjustable illuminator working distance during microscope use.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention provides a kind of continuous vari-focus illuminator of surgical operation microscope, described
Illuminator is engaged with the zoom cam of surgical operation microscope, and the zoom cam has the first cam curve and the second cam bent
Line, the illuminator include what is configured successively along central optical axis：
It is positive power lens as the first lens of preceding fixed group；
It is negative-power lenses as the second lens of zoom group；
It is negative-power lenses as the 3rd lens of compensation group；And
The 4th lens group as rear fixed group；
Wherein, the zoom cam rotation drives second lens and the 3rd lens simultaneously in first lens
Moved between the 4th lens group along central optical axis so that the linear consecutive variations of system focal length value, second lens are pressed
Moved according to the rule of first cam curve, the 3rd lens move according to the rule of second cam curve, described
First cam curve is linearity curve, and second cam curve is exponential curve.
Wherein, the 4th lens group includes：
The 4th lens set close to the 3rd lens, are positive power lens；
The 6th lens set close to light source, are negative-power lenses；And
The 5th lens being arranged between the 4th lens and the 6th lens, it is positive power lens.
Wherein, the illuminator also includes coupled lens system, and the coupled lens system has central shaft, in described
Mandrel is vertical with the central optical axis.
Wherein, the coupled lens system includes：
Speculum, it is arranged on the central optical axis and the central shaft intersection；And
7th lens, it is arranged on the central shaft；
Wherein, the light being emitted from the first lens is reflexed to the 7th lens by the speculum.
Wherein, the speculum is non-45 ° of speculums, and the 7th lens are coaxial lens.
Wherein, the speculum is 45 ° of speculums, and the 7th lens are off-axis lens.
Wherein, the coupled lens system includes：
Speculum, it is arranged on the central optical axis and the central shaft intersection；And
The 7th lens and the 8th lens being sequentially arranged along the central shaft；
Wherein, the light being emitted from the first lens is reflexed to the 7th lens by the speculum.
Wherein, the distance between the 7th lens and the 8th lens can be adjusted between 25mm and 3mm.
Wherein, the speculum is rotating mirror, the 7th lens and the 8th lens be all coaxial lens with
Form coaxial lens group.
Wherein, the speculum is 45 ° of speculums, and the 7th lens and the 8th lens are all off-axis lens with structure
Into off-axis lens group.
(3) beneficial effect
The continuous vari-focus illuminator for the surgical operation microscope that above-mentioned technical proposal is provided, the zoom with surgical operation microscope
Cam is engaged, can be with adjust automatically illumination region size, illuminator operating distance, that is, it is inadequate to avoid illuminance of image plane, again
Prevent the risk for affected part tissue of burning.More, using negative-negative continuous zoom form, realize and surgical operation microscope imaging system
Link continuous zoom, and system zoom ratio, image planes size meet linkage and required.
Brief description of the drawings
Fig. 1 is the continuous vari-focus illuminator zoom trend and short focus (a) of the surgical operation microscope of one embodiment of the invention
With the optical system schematic diagram under long-focus (b)；
Fig. 2 is the continuous vari-focus illuminator zooming procedure cam curve of the surgical operation microscope of the present invention；
Fig. 3 is that the continuous vari-focus illuminator zooming procedure mid-focal length of the surgical operation microscope of the present invention changes curve；
Fig. 4 is the continuous vari-focus illuminator (having coupled lens system) of the surgical operation microscope of another embodiment of the present invention
Optical texture schematic diagram；
Fig. 5 is the image planes uniformity schematic diagram of Fig. 4 systems；
Fig. 6 is that the continuous vari-focus illuminator of the surgical operation microscope of yet another embodiment of the invention is saturating in minimum multiplying power, coupling
Optical texture schematic diagram of the mirror system at most short working distance；
Fig. 7 is the image planes uniformity schematic diagram of Fig. 6 systems；
Fig. 8 is that the continuous vari-focus illuminator of the surgical operation microscope of yet another embodiment of the invention is saturating in maximum multiplying power, coupling
Optical texture schematic diagram of the mirror system at most short working distance；
Fig. 9 is the image planes uniformity schematic diagram of Fig. 8 systems；
Figure 10 is that the continuous vari-focus illuminator of the surgical operation microscope of yet another embodiment of the invention is saturating in minimum multiplying power, coupling
Mirror system is in optical texture schematic diagram most at long working distance；
Figure 11 is the image planes uniformity schematic diagram of Figure 10 systems；
Figure 12 is that the continuous vari-focus illuminator of the surgical operation microscope of yet another embodiment of the invention is saturating in maximum multiplying power, coupling
Mirror system is in optical texture schematic diagram most at long working distance；
Figure 13 is the image planes uniformity schematic diagram of Figure 12 systems.
Wherein, the 1-the first lens, the 2-the second lens, the 3-the three lens, the 4-the four lens, the 5-the five lens, 6-
6th lens, 7-speculum, the 8-the seven lens, the 9-the eight lens.
Embodiment
To make the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's
Embodiment is described in further detail.
The continuous vari-focus illuminator of the surgical operation microscope of the present invention is a kind of continuous zoom illuminator, micro- with performing the operation
The zoom cam of mirror is engaged, and the zoom cam has the first cam curve and the second cam curve.It is with reference to refering to Fig. 1, Fig. 1
Under the continuous vari-focus illuminator zoom trend and short focus (a) and long-focus (b) of the surgical operation microscope of one embodiment of the invention
Optical system schematic diagram, wherein a is illuminator in short focus, the optical texture of big visual field situation；B is illuminator in length
Optical texture under focal length, small field of view.
As shown in figure 1, the first lens 1, the second lens the 2, the 3rd that illuminator includes configuring successively along central optical axis are saturating
The lens group of mirror 3 and the 4th.First lens 1 fix group before being used as, and are positive power lens.Second lens 2 are used as zoom group, are
Negative-power lenses.3rd lens 3 are used as compensation group, are negative-power lenses.4th lens group fixes group after being used as.Wherein,
Zoom cam (not shown) rotate drive the second lens 2 and the 3rd lens 3 simultaneously in the first lens 1 and the 4th lens group it
Between moved along central optical axis so that the linear consecutive variations of system focal length value, the second lens 2 according to the first cam curve rule
Motion, the 3rd lens 3 move according to the rule of the second cam curve, and the first cam curve is linearity curve, the second cam curve
For exponential curve.4th lens group includes the 4th lens 4, the 5th lens 4 and the 6th lens 6, and the 4th lens 4 are saturating close to the 3rd
Mirror 3 is set, and is positive power lens.6th lens 6 are set close to a light source, are negative-power lenses.5th lens 5 are arranged on
It is positive power lens between 4th lens 4 and the 6th lens 6.It is apparent that the present invention uses negative-minus four constituent elements zoom form,
Change focal length is realized by continuously changing Thickness 2, Thickness 4 and Thickness 6 simultaneously, changes zoom ratio
Function.
The illuminator zoom ratio of the embodiment of the present invention is 1:6, it is emitted directional light.Table 1 below list the present invention one compared with
The design parameter on each surface of illuminator of good embodiment, " sequence number " in table is arranged since light incidence end, first
The beam incident surface of lens 1 is sequence number 1, and beam exit face is sequence number 2, and other minute surface sequence numbers are by that analogy；" radius of curvature " point
Do not provide the spherical radius corresponding to each corrugated, if the center of curvature on summit is located at the summit left side, radius of curvature be it is negative,
Otherwise for just, if some surface vertices region is plane, its radius of curvature is designated as " ∞ "；" spacing " goes out two neighboring table
Along the centre distance of optical axis between face, if two surfaces belong to same eyeglass, spacing represents the thickness of the eyeglass.Optics
The design parameter of system is as follows：
The structural parameters of the illuminator of the present invention of table 1
Table 2 below lists the illuminator zoom parameters of a preferred embodiment of the present invention.
The zoom parameters of table 2
| Zoom | Thickness 2(mm) | Thickness 4(mm) | Thickness 6(mm) |
| 1 | 6.9 | 10.4 | 20.0 |
| 2 | 16.6 | 4.8 | 15.8 |
| 3 | 19.2 | 6.2 | 11.8 |
| 4 | 19.7 | 9.2 | 8.4 |
| 5 | 19.6 | 12.2 | 5.5 |
| 6 | 19.3 | 15.0 | 3.0 |
In an alternative embodiment of the invention, illuminator also includes coupled lens system, and coupled lens system has in one
Mandrel, central shaft are vertical with foregoing central optical axis.As shown in figure 4, coupled lens system includes the lens of speculum 7 and the 7th
8.7 centrally disposed optical axis of speculum and central shaft intersection.On 7th lens, 8 centrally disposed axle.Speculum 7 will be from first
The light that lens 1 are emitted reflexes to the 7th lens 8.Wherein, speculum 7 can be non-45 ° of speculums, and the 7th lens 8 can be coaxial
Lens；Or speculum 7 can be 45 ° of speculums, the 7th lens 8 are off-axis lens.
In yet another embodiment of the invention, illuminator also includes coupled lens system, and coupled lens system has in one
Mandrel, central shaft are vertical with foregoing central optical axis.As shown in Fig. 6,8,10,12, coupled lens system includes speculum 7, the
Seven lens 8 and the 8th lens 9.7 centrally disposed optical axis of speculum and central shaft intersection.7th lens 8 and the 8th lens 9
It is sequentially arranged along central shaft.The light being emitted from the first lens 1 is reflexed to the 7th lens 8 by speculum 7.Wherein, the 7th lens 8
The distance between 8th lens 9 can be adjusted between 25mm and 3mm, and the variation of the distance can cause illuminator
Operating distance is changed between 150mm and 350mm, and solving surgical operation microscope illuminator operating distance can not be with imaging
The problem of system is servo-actuated.Speculum 7 can be rotating mirror, and the 7th lens 8 are all that coaxial lens are coaxial to form with the 8th lens 9
Lens group；Or speculum 7 is 45 ° of speculums, the 7th lens 8 and the 8th lens 9 are all off-axis lens to form off-axis lens
Group.When coupled lens system uses rotating mirror, can solve the photograph brought during the change of surgical operation microscope imaging system working distance
Bright excursions problem, while solve illuminator working distance and be servo-actuated problem with imaging system working distance.
In above-mentioned another embodiment and another embodiment, coupled lens system zoom ratio is 1.82, and directional light is incident, adopts
Anamorphosis function is realized with two panels lens；Realize that illumination region is servo-actuated with imaging viewing field using rotatable mirror not drift about.Coupling
It is variable that lens combination realizes that illuminator operating distance links with surgical operation microscope imaging system, substantially increases surgical operation microscope
The working distance of system, most long working distance reach 350mm, and most short working distance is 150mm, meet that the actual use of surgical operation microscope will
Ask.Its structural parameters is shown in Table 3, and zoom parameters are shown in Table 4.
Table 3
Table 4
Table 5 below gives the optical glass parameter of the illuminator of the present invention
The parameter of the optical glass of table 5
| Optical glass | Refractive index nd | Abbe number ν d | λ80/λ5 |
| H-ZF6 | 1.75 | 27.53 | 42/37 |
| H-ZK9B | 1.62 | 60.34 | 36/30 |
| H-LaK7A | 1.71 | 53.83 | 37/28 |
| H-K9L | 1.51 | 64.2 | 33/29 |
In actual applications, the design parameter of each lens of the above, such as radius of curvature, lens thickness, lens separation etc., can do
Certain trickle adjustment is to meet different systematic parameter requirements.
Fig. 2 is cam curve of the illuminator of the present invention in zooming procedure, it is shown that the Hes of Thickness 2
Mobile trends of the Thickness 6 in zooming procedure, wherein Thickness 2 are linear change, and Thickness 6 plays benefit
It is exponential form to repay effect variation tendency.Two interval maximal translation amounts are 17mm.
The illuminator zooming procedure mid-focal length that Fig. 3 is the present invention changes curve, and 6 times of focal length variations, variation tendency is line
Property change, it is identical with the variation tendencies of Thickness in Fig. 22.In zoom system, focal length and a cam curve are same
For linear change, this provides big advantage for the engineering of the system.
Fig. 4 shows that the illuminator of the present invention is used cooperatively with coupled lens system optics, realizes fixed working distance mould
Illumination under formula, system realize that light path is turned back by using speculum and a piece of lens (containing off-axis lens) and illuminate assigned work
Away from, specify illumination region function.
Fig. 5 is image planes uniformity distribution and curve synoptic diagram of the illuminator of the present invention under fixed operating distance, can
Find out that the image planes have high evenness.
Fig. 6 is the optical texture schematic diagram that the illuminator of the present invention works at minimum multiplying power, most short working distance.Continuously
Zoom illuminator is using minimum multiplying power, image planes are big, are easy to searching target；Coupled lens system is using two lens spacing maximum
Working condition, working distance be short, suitable for observing top level structure；Now, total system is operated in minimum multiplying power, at most short working distance.
Φ 75mm image planes are obtained at working distance 150mm.
Fig. 7 is the distribution of the image planes uniformity and the curve synoptic diagram of Fig. 6 systems, it can be seen that the system image planes Energy distribution is equal
It is even.
Fig. 8 is the optical texture schematic diagram that the illuminator of the present invention works at maximum multiplying power, most short working distance.Continuously
Zoom illuminator is using maximum multiplying power, image planes are small, are easy to observe details；Coupled lens system is using two lens spacing maximum
Working condition, working distance be short, suitable for observing top level structure；Now, total system is operated in maximum multiplying power, at most short working distance.
Φ 13mm image planes are obtained at working distance 150mm.
Fig. 9 is the distribution of the image planes uniformity and the curve synoptic diagram of Fig. 8 systems, it will be seen that the image planes have high evenness, meet
Design requirement.
Figure 10 is the optical texture schematic diagram that the illuminator of the present invention works in minimum multiplying power, most at long working distance.Even
Continuous zoom illuminator is using minimum multiplying power, image planes are big, are easy to searching target；Coupled lens system is minimum using two lens spacing
Working condition, working distance it is big, suitable for observing deep structure；Now, total system is operated in minimum multiplying power, most at long working distance.
Φ 75mm image planes are obtained at working distance 350mm.
Figure 11 is the distribution of the image planes uniformity and the curve synoptic diagram of Figure 10 systems, it can be seen that the system image planes Energy distribution is equal
It is even.
Figure 12 is the optical texture schematic diagram that the illuminator of the present invention works in maximum multiplying power, most at long working distance.Even
Continuous zoom illuminator is using maximum multiplying power, image planes are small, are easy to observe details；Coupled lens system is minimum using two lens spacing
Working condition, working distance it is big, suitable for observing deep structure；Now, total system is operated in maximum multiplying power, at most short working distance.
Φ 17mm image planes are obtained at working distance 350mm.
Figure 13 is the distribution of the image planes uniformity and the curve synoptic diagram of Figure 12 systems, it will be seen that the image planes have high evenness, full
Sufficient design requirement.
From the aforegoing it can be seen that the continuous vari-focus illuminator of the surgical operation microscope of the present invention, its surgical operation microscope illumination model
Enclose, illuminate working distance, ZhaoMing Center and can all change, to meet to link imaging system visual field and the needs of working distance changes, from
And the risk that contrast declines in visual field, the tissue outside visual field is burnt in operation can be eliminated, make that system operatio is more easy, pacifies
Entirely.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. the continuous vari-focus illuminator of a kind of surgical operation microscope, it is characterised in that the illuminator and surgical operation microscope
Zoom cam is engaged, and the zoom cam has the first cam curve and the second cam curve, and the illuminator includes edge
What central optical axis configured successively：
It is positive power lens as the first lens of preceding fixed group；
It is negative-power lenses as the second lens of zoom group；
It is negative-power lenses as the 3rd lens of compensation group；And
The 4th lens group as rear fixed group；
Wherein, the zoom cam rotation drives second lens and the 3rd lens simultaneously in first lens and institute
State and moved along central optical axis so that the linear consecutive variations of system focal length value, second lens are according to institute between the 4th lens group
The rule motion of the first cam curve is stated, the 3rd lens move according to the rule of second cam curve, and described first
Cam curve is linearity curve, and second cam curve is exponential curve.
2. the continuous vari-focus illuminator of surgical operation microscope according to claim 1, it is characterised in that the 4th lens
Group includes：
The 4th lens set close to the 3rd lens, are positive power lens；
The 6th lens set close to light source, are negative-power lenses；And
The 5th lens being arranged between the 4th lens and the 6th lens, it is positive power lens.
3. the continuous vari-focus illuminator of surgical operation microscope according to claim 1 or 2, it is characterised in that the illumination
System also includes coupled lens system, and the coupled lens system has central shaft, and the central shaft hangs down with the central optical axis
Directly.
4. the continuous vari-focus illuminator of surgical operation microscope according to claim 3, it is characterised in that the coupled lens
System includes：
Speculum, it is arranged on the central optical axis and the central shaft intersection；And
7th lens, it is arranged on the central shaft；
Wherein, the light being emitted from the first lens is reflexed to the 7th lens by the speculum.
5. the continuous vari-focus illuminator of surgical operation microscope according to claim 4, it is characterised in that the speculum is
Non- 45 ° of speculums, the 7th lens are coaxial lens.
6. the continuous vari-focus illuminator of surgical operation microscope according to claim 4, it is characterised in that the speculum is
45 ° of speculums, the 7th lens are off-axis lens.
7. the continuous vari-focus illuminator of surgical operation microscope according to claim 3, it is characterised in that the coupled lens
System includes：
Speculum, it is arranged on the central optical axis and the central shaft intersection；And
The 7th lens and the 8th lens being sequentially arranged along the central shaft；
Wherein, the light being emitted from the first lens is reflexed to the 7th lens by the speculum.
8. the continuous vari-focus illuminator of surgical operation microscope according to claim 7, it is characterised in that the 7th lens
The distance between described 8th lens can be adjusted between 25mm and 3mm.
9. the continuous vari-focus illuminator of surgical operation microscope according to claim 8, it is characterised in that the speculum is
Rotating mirror, the 7th lens and the 8th lens are all coaxial lens to form coaxial lens group.
10. the continuous vari-focus illuminator of surgical operation microscope according to claim 8, it is characterised in that the speculum
For 45 ° of speculums, the 7th lens and the 8th lens are all off-axis lens to form off-axis lens group.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710741015.7A CN107561677A (en) | 2017-08-25 | 2017-08-25 | The continuous vari-focus illuminator of surgical operation microscope |
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| CN201710741015.7A CN107561677A (en) | 2017-08-25 | 2017-08-25 | The continuous vari-focus illuminator of surgical operation microscope |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113406782A (en) * | 2021-07-20 | 2021-09-17 | 深圳阿斯克医疗有限公司 | Optical lens group and medical lighting device |
| CN114200662A (en) * | 2021-12-21 | 2022-03-18 | 湖南华南光电(集团)有限责任公司 | Athermal infrared collimator optical system |
| CN115657283A (en) * | 2022-12-12 | 2023-01-31 | 图湃(北京)医疗科技有限公司 | Operating microscope continuous zoom system and operating microscope |
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| CN113406782A (en) * | 2021-07-20 | 2021-09-17 | 深圳阿斯克医疗有限公司 | Optical lens group and medical lighting device |
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| CN115657283B (en) * | 2022-12-12 | 2023-08-11 | 图湃(北京)医疗科技有限公司 | Operating microscope continuous zoom system and operating microscope |
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Application publication date: 20180109 |