CN105425375A - Imaging apparatus for operation microscope - Google Patents
Imaging apparatus for operation microscope Download PDFInfo
- Publication number
- CN105425375A CN105425375A CN201610019064.5A CN201610019064A CN105425375A CN 105425375 A CN105425375 A CN 105425375A CN 201610019064 A CN201610019064 A CN 201610019064A CN 105425375 A CN105425375 A CN 105425375A
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- China
- Prior art keywords
- lens
- minute surface
- imaging device
- face
- operation microscope
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/02—Objectives
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/0004—Microscopes specially adapted for specific applications
- G02B21/0012—Surgical microscopes
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Surgery (AREA)
- Lenses (AREA)
Abstract
The invention discloses an imaging apparatus for an operation microscope, and belongs to the technical field of a microscope. The main technical points are as follows: the imaging apparatus comprises four lenses arranged on the same optical axis. The four lenses are successively a first lens, a second lens, a third lens and a fourth lens from an object to an image, wherein the first lens is a biconvex lens with a positive refraction capability, the second lens is a bi-concave lens with a negative refraction capability, the third lens is a biconvex lens with a positive refraction capability, and the fourth lens is a negative crescent-shaped lens with a negative refraction capability. The novel imaging system provided by the invention has the advantages of high brightness, small volume and short lens length, thereby being applied to imaging of the operation microscope.
Description
Technical field
The present invention relates to a kind of microscopical imaging device, more particularly, particularly relate to a kind of imaging device for surgical operation microscope.
Background technology
In recent years, actively surgical operation microscope is applied to cranial surgery, dentistry, the application of the operation such as ear-nose-throat department, for doctor provides the image amplified clearly.In the case, be built in the lens imaging system in surgical operation microscope, the optical system as operation technique record becomes very important, has higher requirements in addition in image quality.Because existing microscopical volume is comparatively large, lens length is longer, easily affects the main optical path (brightness attenuating) of surgical operation microscope, and also can affect the operating space of doctor when performing the operation.Therefore, how to make that the length of the imaging device of surgical operation microscope is shorter, volume is less, imaging effect is better, become the development new direction of surgical operation microscope.
Summary of the invention
The object of the present invention is to provide a kind of imaging device for surgical operation microscope, this imaging device has that brightness is high, volume is little, lens length is a little short.
The technical solution used in the present invention is as follows:
A kind of imaging device for surgical operation microscope, wherein, be included in four lens that identical optical axis is arranged, from object to image space to lens order be respectively the first lens, the second lens, the 3rd lens and the 4th lens, the first described lens are the convexo-convex lens with positive refractive power, the second described lens are the bi-concave lens with negative refractive power, the 3rd described lens are the convexo-convex lens with positive refractive power, and the 4th described lens are the lens of the negative curved month type with negative refractive power.
Further, described imaging device meets the following conditions:
f’＝59.94mm
Wherein f ' is the focal length of whole imaging device.
Further, described imaging device meets the following conditions:
f’
12/f’
34>4.0
Wherein f '
12be the combined focal length of the first lens and the second lens, f '
34it is the combined focal length of the 3rd lens and the 4th lens.
Further, described imaging device meets the following conditions:
0.8<TTL/f’<1.2
The first wherein said lens face is the first minute surface to the face in object direction, first lens face to image space to face be the second minute surface, the second described lens face is the 3rd minute surface to the face in object direction, second lens face to image space to face be the 4th minute surface, the 3rd described lens face is the 5th minute surface to the face in object direction, 3rd lens face to image space to face be the 6th minute surface, the 4th described lens face is the 7th minute surface to the face in object direction, the 4th lens face to image space to face be the 8th minute surface;
TTL is the distance of the first minute surface central point to imaging surface.
Further, in the middle of the second lens L2 and the 3rd lens L3, be provided with diaphragm S, the distance of described diaphragm S and the 5th minute surface M5 is 6.6mm, and the semiaperture of described diaphragm S is 6.7mm.
Further, the radius-of-curvature of the first minute surface of described imaging device is 22.2mm, the radius-of-curvature of described second minute surface is-85.8mm, the radius-of-curvature of described 3rd minute surface is-39.5mm, the radius-of-curvature of described 4th minute surface is 24.2mm, and the radius-of-curvature of described 5th minute surface is 195.6mm, and the radius-of-curvature of described 6th minute surface is-21.5mm, the radius-of-curvature of described 7th minute surface is-17.3mm, and the radius-of-curvature of described 8th minute surface is-74.9mm.
Further, the thickness of the first minute surface of described imaging device is 4.5mm, the thickness of described second minute surface is 1.5mm, the thickness of described 3rd minute surface is 3.5mm, the thickness of described 4th minute surface is 3.5mm, the thickness of described 5th minute surface is 2.5mm, and the thickness of described 6th minute surface is 2.5mm, and the thickness of described 7th minute surface is 1.5mm.
Further, the first lens of described imaging device and the semiaperture of the second lens are 9.3mm, and the semiaperture of described 3rd lens and the 4th lens is 7.7mm.
Further, the Refractive Index of Material of the first lens of described imaging device is 1.73, and the Refractive Index of Material of described second lens is 1.67, and the Refractive Index of Material of described 3rd lens is 1.79, and the Refractive Index of Material of described 4th lens is 1.62.
Compared with prior art, the beneficial effect that the present invention has is:
Imaging device for surgical operation microscope of the present invention, be included in four lens that identical optical axis is arranged, from object to image space to lens order be respectively the first lens, second lens, 3rd lens and the 4th lens, first lens are the convexo-convex lens with positive refractive power, second lens are the bi-concave lens with negative refractive power, 3rd lens are the convexo-convex lens with positive refractive power, 4th lens are the lens of the negative curved month type with negative refractive power, through the lens combination of this spline structure, the brightness of this imaging device is higher, volume is smaller and more exquisite, lens length is shorter, number of lenses is less, thus reduce the cost of product, and the performance of its optical imagery is more outstanding.
Accompanying drawing explanation
Fig. 1 is the structural representation of imaging device of the present invention;
Fig. 2 is the ratio chromatism, figure of imaging device of the present invention;
Fig. 3 be imaging device of the present invention axle on chromaticity difference diagram;
Fig. 4 is astigmatism and the distortion figure of imaging device of the present invention;
Fig. 5 is the optical transfer function figure of imaging device of the present invention.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is described in further detail, but does not form any limitation of the invention.
With reference to shown in Fig. 1, imaging device for surgical operation microscope of the present invention, be included in four lens that identical optical axis is arranged, from object to image space to lens order be respectively the first lens L1, second lens L2, 3rd lens L3 and the 4th lens L4, the first described lens L1 is the convexo-convex lens with positive refractive power, the second described lens L2 is the bi-concave lens with negative refractive power, the 3rd described lens L3 is the convexo-convex lens with positive refractive power, the 4th described lens L4 is the lens of the negative curved month type with negative refractive power.Through the lens combination of this spline structure, the brightness of this imaging device is higher, and volume is smaller and more exquisite, and lens length is shorter, and number of lenses is less, thus reduces the cost of product.
Wherein, described imaging device has 8 minute surfaces, the first described lens L1 is the first minute surface M1 towards the face in object direction, first lens L1 towards image space to face be the second minute surface M2, the second described lens L2 is the 3rd minute surface M3 towards the face in object direction, second lens L2 towards image space to face be the 4th minute surface M4, the 3rd described lens L3 is the 5th minute surface M5 towards the face in object direction, 3rd lens L3 towards image space to face be the 6th minute surface M6, the 4th described lens L4 is the 7th minute surface M7 towards the face in object direction, 4th lens L4 towards image space to face be the 8th minute surface M8.
Described imaging device meets the following conditions:
f’＝59.94mm
f’
12/f’
34>4.0
0.8<TTL/f’<1.2
Wherein f ' is the focal length of whole imaging device, f '
12be the combined focal length of the first lens L1 and the second lens L2, f '
34be the combined focal length of the 3rd lens L3 and the 4th lens L4, TTL is the distance of the first minute surface M1 central point to imaging surface.
Diaphragm S is provided with in the middle of the second lens L2 and the 3rd lens L3.
Imaging device for surgical operation microscope of the present invention meets some parameters, specifically in table 1:
Table 1 imaging device parameter list
As shown in table 1, the radius-of-curvature of the first minute surface M1 of described imaging device is 22.2mm, the radius-of-curvature of described second minute surface M2 is-85.8mm, the radius-of-curvature of described 3rd minute surface M3 is-39.5mm, the radius-of-curvature of described 4th minute surface M4 is 24.2mm, and the radius-of-curvature of described 5th minute surface M5 is 195.6mm, and the radius-of-curvature of described 6th minute surface M6 is-21.5mm, the radius-of-curvature of described 7th minute surface M7 is-17.3mm, and the radius-of-curvature of described 8th minute surface M8 is-74.9mm.
The thickness of the first minute surface M1 of described imaging device is 4.5mm, the thickness of described second minute surface M2 is 1.5mm, the thickness of described 3rd minute surface M3 is 3.5mm, the thickness of described 4th minute surface M4 is 3.5mm, the thickness of described 5th minute surface M5 is 2.5mm, the thickness of described 6th minute surface M6 is 2.5mm, and the thickness of described 7th minute surface M7 is 1.5mm.
First lens L1 of described imaging device and the semiaperture of the second lens L2 are 9.3mm, and the semiaperture of described 3rd lens L3 and the 4th lens L4 is 7.7mm.
The Refractive Index of Material of the first lens L1 of described imaging device is 1.73, and the Refractive Index of Material of described second lens L2 is 1.67, and the Refractive Index of Material of described 3rd lens L3 is 1.79, and the Refractive Index of Material of described 4th lens L4 is 1.62.
The distance of described diaphragm S and the 5th minute surface M5 is 6.6mm, and the semiaperture of described diaphragm S is 6.7mm.
Through the test to the imaging device for surgical operation microscope of the present invention, obtain chromaticity difference diagram, astigmatism and distortion figure and optical transfer function figure on the ratio chromatism, figure of this imaging device, axle, respectively as shown in Fig. 2 to 5, drawn by test data, the performance of its optical imagery of imaging device for surgical operation microscope of the present invention is more outstanding.
The foregoing is only better embodiment of the present invention, all do within the scope of the spirit and principles in the present invention any amendment, equivalent to replace and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the imaging device for surgical operation microscope, it is characterized in that, be included in four lens that identical optical axis is arranged, the four described directions of lens from object to picture are followed successively by the first lens (L1), second lens (L2), 3rd lens (L3) and the 4th lens (L4), described the first lens (L1) are for having the biconvex lens of positive refractive power, described the second lens (L2) are for having the biconcave lens of negative refractive power, the 3rd described lens (L3) are for having the biconvex lens of positive refractive power, the 4th described lens (L4) are for having the negative meniscus lens of negative refractive power.
2. the imaging device for surgical operation microscope according to claim 1, is characterized in that, described imaging device meets the following conditions:
f’＝59.94mm
Wherein f ' is the focal length of whole imaging device.
3. the imaging device for surgical operation microscope according to claim 2, is characterized in that, described imaging device meets the following conditions:
f’
12/f’
34>4.0
Wherein f '
12be the combined focal length of the first lens (L1) and the second lens (L2), f '
34it is the combined focal length of the 3rd lens (L3) and the 4th lens (L4).
4. the imaging device for surgical operation microscope according to claim 3, is characterized in that, described imaging device meets the following conditions:
0.8<TTL/f’<1.2
Wherein said the first lens (L1) are the first minute surface (M1) towards the face in object direction, first lens (L1) towards image space to face be the second minute surface (M2), described the second lens (L2) are the 3rd minute surface (M3) towards the face in object direction, second lens (L2) towards image space to face be the 4th minute surface (M4), the 3rd described lens (L3) are the 5th minute surface (M5) towards the face in object direction, 3rd lens (L3) towards image space to face be the 6th minute surface (M6), the 4th described lens (L4) are the 7th minute surface (M7) towards the face in object direction, 4th lens (L4) towards image space to face be the 8th minute surface (M8),
TTL is the distance of the first minute surface (M1) central point to imaging surface.
5. the imaging device for surgical operation microscope according to claim 4, it is characterized in that, diaphragm (S) is provided with in the middle of the second lens (L2) and the 3rd lens (L3), described diaphragm (S) is 6.6mm with the distance of the 5th minute surface (M5), and the semiaperture of described diaphragm (S) is 6.7mm.
6. the imaging device for surgical operation microscope according to claim 4, it is characterized in that, the radius-of-curvature of described the first minute surface (M1) is 22.2mm, the radius-of-curvature of described second minute surface (M2) is-85.8mm, the radius-of-curvature of described 3rd minute surface (M3) is-39.5mm, the radius-of-curvature of described 4th minute surface (M4) is 24.2mm, the radius-of-curvature of described 5th minute surface (M5) is 195.6mm, the radius-of-curvature of described 6th minute surface (M6) is-21.5mm, the radius-of-curvature of described 7th minute surface (M7) is-17.3mm, the radius-of-curvature of described 8th minute surface (M8) is-74.9mm.
7. the imaging device for surgical operation microscope according to claim 4, it is characterized in that, the thickness of first minute surface (M1) of described imaging device is 4.5mm, the thickness of described second minute surface (M2) is 1.5mm, the thickness of described 3rd minute surface (M3) is 3.5mm, the thickness of described 4th minute surface (M4) is 3.5mm, the thickness of described 5th minute surface (M5) is 2.5mm, the thickness of described 6th minute surface (M6) is 2.5mm, and the thickness of described 7th minute surface (M7) is 1.5mm.
8. the imaging device for surgical operation microscope according to claim 4, it is characterized in that, first lens (L1) of described imaging device and the semiaperture of the second lens (L2) are 9.3mm, and the semiaperture of described 3rd lens (L3) and the 4th lens (L4) is 7.7mm.
9. the imaging device for surgical operation microscope according to claim 4, it is characterized in that, the Refractive Index of Material of first lens (L1) of described imaging device is 1.73, the Refractive Index of Material of described second lens (L2) is 1.67, the Refractive Index of Material of described 3rd lens (L3) is 1.79, and the Refractive Index of Material of described 4th lens (L4) is 1.62.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019064.5A CN105425375A (en) | 2016-01-13 | 2016-01-13 | Imaging apparatus for operation microscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019064.5A CN105425375A (en) | 2016-01-13 | 2016-01-13 | Imaging apparatus for operation microscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105425375A true CN105425375A (en) | 2016-03-23 |
Family
ID=55503689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610019064.5A Pending CN105425375A (en) | 2016-01-13 | 2016-01-13 | Imaging apparatus for operation microscope |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0943508A (en) * | 1995-07-28 | 1997-02-14 | Topcon Corp | Hybrid lens |
| US6282033B1 (en) * | 1999-09-07 | 2001-08-28 | Alex Ning | Lens with external aperture stop |
| CN1743891A (en) * | 2005-09-15 | 2006-03-08 | 上海交通大学 | Confocal endoscope mini-microscope objective lens probe |
| CN205374860U (en) * | 2016-01-13 | 2016-07-06 | 广西奥顺仪器有限公司 | A image device for operation microscope |
-
2016
- 2016-01-13 CN CN201610019064.5A patent/CN105425375A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0943508A (en) * | 1995-07-28 | 1997-02-14 | Topcon Corp | Hybrid lens |
| US6282033B1 (en) * | 1999-09-07 | 2001-08-28 | Alex Ning | Lens with external aperture stop |
| CN1743891A (en) * | 2005-09-15 | 2006-03-08 | 上海交通大学 | Confocal endoscope mini-microscope objective lens probe |
| CN205374860U (en) * | 2016-01-13 | 2016-07-06 | 广西奥顺仪器有限公司 | A image device for operation microscope |
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Application publication date: 20160323 |