CN107561678A - Surgical operation microscope imaging optical system - Google Patents
Surgical operation microscope imaging optical system Download PDFInfo
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- CN107561678A CN107561678A CN201710741303.2A CN201710741303A CN107561678A CN 107561678 A CN107561678 A CN 107561678A CN 201710741303 A CN201710741303 A CN 201710741303A CN 107561678 A CN107561678 A CN 107561678A
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- exit face
- incident surface
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Abstract
The invention discloses a kind of surgical operation microscope imaging optical system, including Amici prism, the first lens, the second lens and the 3rd lens being sequentially arranged along central optical axis.First lens are positive power lens, have the first beam incident surface and the first beam exit face, and the first beam incident surface is relative with Amici prism.Second lens are negative-power lenses, have the second beam incident surface and the second beam exit face, have one first spacing along central optical axis between the second beam incident surface and the first beam exit face.3rd lens are positive power lens, with the 3rd beam incident surface and the 3rd beam exit face, there is one second spacing along central optical axis between 3rd beam incident surface and the second beam exit face, the 3rd beam exit face is relative with the charge coupled cell image planes of surgical operation microscope.Wherein, the first spacing is 4mm~1.2mm, and the second spacing is 4.4mm~1.35mm.The present invention is not easy to cause optical energy loss and is applicable to different CCD.
Description
Technical field
The invention belongs to Optical System Design technical field, is to be related to a kind of surgical operation microscope camera optical specifically
System.
Background technology
Surgical operation microscope is exaggerated surgical field of view, enables a physician to see clearly the fine structure of operative site, can carry out with
The various micrurgies that naked eyes can not be completed, have expanded operative treatment scope, have improved operation fine degree, be widely used in eye
In numerous medical fields such as section, ear-nose-throat department, the department of stomatology, neurosurgery, hand surgery, gynaecology.And the shooting system of surgical operation microscope
The optional accessory united generally as surgical operation microscope, is connected in the light path of surgical operation microscope, from a part of light of main optical path point, its energy
Enough in operation, the art face information in the doctor visual field is supplied to CCD (Charge-coupled Device, Chinese full name：Electricity
Lotus coupling element), various optical imagerys, the video of surgical procedure are shot for camera system, is easy to whole operation technique team to see
Examine.
Existing surgical operation microscope imaging optical system is just like the Chinese invention patent that notification number is " CN104155746A "
" surgical operation microscope photographic device " disclosed in application, using a piece of speculum turnover light path, although it can play turnover light path
Purpose, still, it is not easy adjustment, and may be only available for a kind of specific CCD, if changing different CCD (such as infrared CCD, visible
CCD, only to the special CCD of certain special response) when, whole imaging optical system is required to redesign, changed.
The content of the invention
(1) goal of the invention
The purpose of the present invention is：Easily cause optical energy loss for existing surgical operation microscope imaging optical system, be only applicable to
The defects of a kind of specific CCD, there is provided a kind of to be not easy to cause optical energy loss, facilitate adjustment and be applicable to different CCD operation
Microscope image pick-up optical system.
(2) technical scheme
In order to solve the above-mentioned technical problem, the present invention provides a kind of surgical operation microscope imaging optical system, has center light
Axle, including the Amici prism being arranged on the central optical axis, in addition on the central optical axis and along the center
What optical axis was sequentially arranged：
First lens, it is positive power lens, there is the first beam incident surface and the first beam exit face, first light
The beam plane of incidence is relative with the Amici prism；
Second lens, it is negative-power lenses, there is the second beam incident surface and the second beam exit face, second light
There is the first spacing along the central optical axis between the beam plane of incidence and first beam exit face；And
3rd lens, it is positive power lens, there is the 3rd beam incident surface and the 3rd beam exit face, the 3rd light
There is the second spacing, the 3rd beam exit face along the central optical axis between the beam plane of incidence and second beam exit face
It is relative with the charge coupled cell image planes of surgical operation microscope；
Wherein, first spacing is 4mm~1.2mm, and second spacing is 4.4mm~1.35mm.
Wherein, along the center light between the charge coupled cell image planes of the 3rd beam exit face and surgical operation microscope
Axle has the 3rd distance, and the 3rd distance is more than 40mm.
Wherein, first beam incident surface is equal to institute with distance of first beam exit face along the central optical axis
The second beam incident surface is stated with distance of second beam exit face along the central optical axis and equal to the 3rd light beam to enter
Penetrate face and distance of the 3rd beam exit face along the central optical axis.
Wherein, the spherical radius corresponding to first beam incident surface is -25.1mm, the first beam exit face institute
Corresponding spherical radius is 156.3mm, and first beam incident surface and first beam exit face are along the center light
The distance of axle is 9.5mm.
Wherein, the optical glass that first lens use is H-ZK14.
Wherein, the spherical radius corresponding to second beam incident surface is 55.9mm, the second beam exit face institute
Corresponding spherical radius is -20.7mm, and second beam incident surface and second beam exit face are along the center light
The distance of axle is 9.5mm.
Wherein, the optical glass that second lens use is H-F4.
Wherein, the spherical radius corresponding to the 3rd beam incident surface is -37.8mm, the 3rd beam exit face institute
Corresponding spherical radius is 52.7mm, and the 3rd beam incident surface and the 3rd beam exit face are along the central optical axis
Distance be 9.5mm.
Wherein, the optical glass that the 3rd lens use is H-ZK 21.
Wherein, the optical glass that the Amici prism uses is H-K9L.
(3) beneficial effect
The surgical operation microscope imaging optical system that above-mentioned technical proposal is provided, it is saturating using an Amici prism and three lists
Mirror realizes light path turnover, projected on CCD, and positive power lens, negative-power lenses, positive light is respectively adopted in three lens
Power lenses, it is not easy to cause optical energy loss and is applicable to different CCD.Meanwhile systemic resolution is high, image clearly, color
Distortion is small, and system bulk is small, back work distance is big, and system operatio is more easy.
Brief description of the drawings
Fig. 1 is the pie graph of surgical operation microscope imaging optical system of the present invention；
Fig. 2 is the surgical operation microscope imaging optical system MTF curve of the present invention；
Fig. 3 is the curvature of field and distortion curve of the surgical operation microscope imaging optical system of the present invention.
Wherein, 1-Amici prism, the 2-the first lens, the 21-the first beam incident surface, the 22-the first beam exit face,
3-the second lens, the 31-the second beam incident surface, the 32-the second beam exit face, the 4-the three lens, the 41-the three light beam enter
Penetrate face, the 42-the three beam exit face, 5-CCD image planes.
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 surgical operation microscope imaging optical system of the present invention, its focal length is 60mm, and back work distance is from up to 40.4mm, system
Element overall length 60mm.As shown in figure 1, surgical operation microscope imaging optical system has a central optical axis A1, surgical operation microscope shooting
It is saturating that optical system includes Amici prism 1, first that is on centrally disposed optical axis A1 and being sequentially arranged along the central optical axis
Mirror 2, the second lens 3 and the 3rd lens 4.Amici prism 1 is played from the function that is used for CCD of main optical path light splitting, its splitting ratio by
Plated spectro-film determines that shooting light path contains 5 with main optical path splitting ratio:5、4:6、3:7、2:The diversified forms such as 8.First lens 2 are
Positive power lens, there is the first beam incident surface 21 and the first beam exit face 22, the first beam incident surface 21 and light splitting rib
Mirror 1 is relative.Second lens 3 are negative-power lenses, have the second beam incident surface 31 and the second beam exit face 32, the second light
There is the first spacing along central optical axis A1 between the beam exit face 22 of the beam plane of incidence 31 and first.3rd lens 4 are positive light coke
Lens, there is the 3rd beam incident surface 41 and the 3rd beam exit face 42, the 3rd beam incident surface 41 and the second beam exit face
There are the second spacing, the charge coupled cell image planes 5 of the 3rd beam exit face 42 and surgical operation microscope along central optical axis between 32
Relatively.In the present invention, the first spacing is 4mm~1.2mm, and the second spacing is 4.4mm~1.35mm.
It is preferred that between the 3rd beam exit face 42 and the CCD image planes 5 of surgical operation microscope along central optical axis have the 3rd away from
From the 3rd distance is more than 40mm.First beam incident surface 21 is equal to the first beam exit face 22 along the distance of central optical axis
The distance of second beam incident surface 31 and the second beam exit face 32 along central optical axis, and equal to the 3rd beam incident surface 41 and the
Distance of three beam exit faces 42 along central optical axis.
It is apparent that the surgical operation microscope imaging optical system of the present invention is made up of an Amici prism and 3 simple lenses, structure
Compact, processing, adjustment are easy.
Table 1 below lists the design parameter on each surface of optical system of a preferred embodiment of the present invention, " the sequence in table
Number " it is to be arranged since light incidence end, the beam incident surface of Amici prism 1 is sequence number 1, and beam exit face is sequence number 3, other
Minute surface sequence number is by that analogy；" radius of curvature " provides the radius of each lens surface respectively；" spacing " shows two neighboring surface
Between along central optical axis spacing, if two surfaces belong to same eyeglass, spacing represents the thickness of the eyeglass.Optical system
The design parameter of system is as follows：
The structural parameters of the surgical operation microscope imaging optical system of the present invention of table 1
The present invention realizes light path turnover using an Amici prism and three simple lenses, projected on CCD, systemic resolution
Height, image clearly, cross-color are small, system bulk is small, back work distance is big, make system operatio more easy.First lens 2,
Two lens 3 and the 3rd lens 4 form imaging lens group, play light collection in CCD image planes, ensure that it is imaged good, image
Clearly, it is undistorted, meet in surgical procedure doctor's observation and surgical procedure the needs of shooting with video-corder.More, the first lens 2, the second lens 3
And it is to have taken into full account installation, in actual use adjustment, the knot after demand that the distance between three of the 3rd lens 4, which is set,
Fruit：First, three's distance is not excessively compact, avoids colliding between eyeglass, the difficulty of installation and debugging；Secondly, three
Distance is only remote, and avoiding can make it that mechanical structure is long, system bulk is excessive too far, influence surgical operation microscope complete machine body
Product, while cause the defect inconvenient for use of doctor；Finally, the rear cut-off distance of whole camera system is also assures that after coordinating between three
(that is, being more than 40mm along the distance of central optical axis, the distance between the 3rd beam exit face 42 and CCD image planes 5), so as to meet
Change CCD demand.
Table 2 below lists the optical glass that the optical system of present pre-ferred embodiments uses
The parameter of the optical glass of table 2
| Optical glass | Refractive index nd | Abbe number ν d | λ80/λ5 |
| H-K9L | 1.51 | 64.2 | 33/29 |
| H-F4 | 1.62 | 36.35 | 39/36 |
| H-ZK14 | 1.60 | 60.6 | 35/30 |
| H-ZK21 | 1.62 | 58.12 | 36/30 |
With reference to the MTF curve refering to Fig. 2 surgical operation microscope imaging optical systems of the present invention.It can be drawn by curve, shooting light
The actual MTF curve of system close to diffraction limit MTF curve, wherein diffraction limit MTF curve for system optimal in theory MTF
Curve, but because real system is constantly present various inevitably differences, so the actual MTF curve of optical system can only connect
Nearly diffraction limit MTF curve, and be unable to reach.
With reference to the curvature of field and distortion curve refering to Fig. 3 surgical operation microscope imaging optical systems of the present invention.It can be seen that by curve,
The surgical operation microscope imaging optical system full filed maximum curvature of field is 0.086, and full filed maximum distortion is 0.028%, is fully ensured that
Imaging optical system image on CCD is clear, indeformable.
More experiment proves that, surgical operation microscope photographic optical system of the present invention at least can be suitably used for CCD different in 4, point
It is not：Visible-light CCD, infrared CCD, the special spectral coverage CCD for ICG medicines and the special spectral coverage for 5-ALA medicines
CCD (wherein ICG and 5-ALA is two kinds of clinically the most frequently used fluoroscopic visualization medicines)；And (so-called using fluoroscopic visualization function
Fluoroscopic visualization, after being directed to tissue injection fluoroscopic visualization medicine, the medicine sends particular spectral under special spectral coverage illumination
The light of section, the high fluoroscopic image of identification is formed, ensure that the timely feedback of information important in art, as that whether tumour cuts off is dry
It is net etc., improve procedure efficiency and reliability) when, it is only necessary to different CCD is changed, avoids to need to change at this stage and entirely takes the photograph
As the inconvenience of optical system, debugging complete machine, facilitate the use in medical procedure, reduce great amount of cost.
It is apparent that the present invention solves the problems, such as that balanced in different spectral coverage imaging capability and quality is good, it is more convenient for curing
Use during treatment.
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. a kind of surgical operation microscope imaging optical system, there is central optical axis, including the light splitting being arranged on the central optical axis
Prism, it is characterised in that also include what is be sequentially arranged on the central optical axis and along the central optical axis：
First lens, it is positive power lens, there is the first beam incident surface and the first beam exit face, first light beam enters
It is relative with the Amici prism to penetrate face；
Second lens, it is negative-power lenses, there is the second beam incident surface and the second beam exit face, second light beam enters
Penetrate between face and first beam exit face has the first spacing along the central optical axis；And
3rd lens, it is positive power lens, there is the 3rd beam incident surface and the 3rd beam exit face, the 3rd light beam enters
Penetrate between face and second beam exit face has the second spacing, the 3rd beam exit face and hand along the central optical axis
The microscopical charge coupled cell image planes of art are relative；
Wherein, first spacing is 4mm~1.2mm, and second spacing is 4.4mm~1.35mm.
2. surgical operation microscope imaging optical system according to claim 1, it is characterised in that the 3rd beam exit face
There is the 3rd distance along the central optical axis between the charge coupled cell image planes of surgical operation microscope, the 3rd distance is more than
40mm。
3. surgical operation microscope imaging optical system according to claim 1, it is characterised in that first beam incident surface
It is equal to second beam incident surface and second light beam with distance of first beam exit face along the central optical axis
Distance of the exit facet along the central optical axis and equal to the 3rd beam incident surface with the 3rd beam exit face described in
The distance of central optical axis.
4. the surgical operation microscope imaging optical system according to any one in claim 1-3, it is characterised in that described
Spherical radius corresponding to one beam incident surface is -25.1mm, and the spherical radius corresponding to first beam exit face is
156.3mm, and first beam incident surface and distance of first beam exit face along the central optical axis are 9.5mm.
5. surgical operation microscope imaging optical system according to claim 4, it is characterised in that what first lens used
Optical glass is H-ZK14.
6. the surgical operation microscope imaging optical system according to any one in claim 1-3, it is characterised in that described
Spherical radius corresponding to two beam incident surfaces is 55.9mm, the spherical radius corresponding to second beam exit face for-
20.7mm, and second beam incident surface and distance of second beam exit face along the central optical axis are 9.5mm.
7. surgical operation microscope imaging optical system according to claim 6, it is characterised in that what second lens used
Optical glass is H-F4.
8. the surgical operation microscope imaging optical system according to any one in claim 1-3, it is characterised in that described
Spherical radius corresponding to three beam incident surfaces is -37.8mm, and the spherical radius corresponding to the 3rd beam exit face is
52.7mm, and the 3rd beam incident surface and distance of the 3rd beam exit face along the central optical axis are 9.5mm.
9. surgical operation microscope imaging optical system according to claim 8, it is characterised in that what the 3rd lens used
Optical glass is H-ZK 21.
10. surgical operation microscope imaging optical system according to claim 1, it is characterised in that the Amici prism uses
Optical glass be H-K9L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710741303.2A CN107561678B (en) | 2017-08-25 | 2017-08-25 | Operation microscope camera optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710741303.2A CN107561678B (en) | 2017-08-25 | 2017-08-25 | Operation microscope camera optical system |
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| Publication Number | Publication Date |
|---|---|
| CN107561678A true CN107561678A (en) | 2018-01-09 |
| CN107561678B CN107561678B (en) | 2020-06-19 |
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| CN201710741303.2A Active CN107561678B (en) | 2017-08-25 | 2017-08-25 | Operation microscope camera optical system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4139267A (en) * | 1975-12-11 | 1979-02-13 | Canon Kabushiki Kaisha | Lens having high resolving power |
| WO2005047953A1 (en) * | 2003-11-03 | 2005-05-26 | Dmetrix, Inc. | Miniature microscope objective lens |
| CN201892780U (en) * | 2010-12-07 | 2011-07-06 | 桂林电子科技大学 | CaF2-free low-power plan apochromatic metallographic microscope |
| CN102341737A (en) * | 2009-03-10 | 2012-02-01 | 柯尼卡美能达精密光学株式会社 | Image-capturing optical system, image-capturing optical device, and digital equipment |
| US20160363758A1 (en) * | 2015-06-10 | 2016-12-15 | Canon Kabushiki Kaisha | Observation optical system, and image displaying apparatus having the same |
-
2017
- 2017-08-25 CN CN201710741303.2A patent/CN107561678B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4139267A (en) * | 1975-12-11 | 1979-02-13 | Canon Kabushiki Kaisha | Lens having high resolving power |
| WO2005047953A1 (en) * | 2003-11-03 | 2005-05-26 | Dmetrix, Inc. | Miniature microscope objective lens |
| CN102341737A (en) * | 2009-03-10 | 2012-02-01 | 柯尼卡美能达精密光学株式会社 | Image-capturing optical system, image-capturing optical device, and digital equipment |
| CN201892780U (en) * | 2010-12-07 | 2011-07-06 | 桂林电子科技大学 | CaF2-free low-power plan apochromatic metallographic microscope |
| US20160363758A1 (en) * | 2015-06-10 | 2016-12-15 | Canon Kabushiki Kaisha | Observation optical system, and image displaying apparatus having the same |
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| Publication number | Publication date |
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| CN107561678B (en) | 2020-06-19 |
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