CN205374860U - A image device for operation microscope - Google Patents
A image device for operation microscope Download PDFInfo
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- CN205374860U CN205374860U CN201620027466.5U CN201620027466U CN205374860U CN 205374860 U CN205374860 U CN 205374860U CN 201620027466 U CN201620027466 U CN 201620027466U CN 205374860 U CN205374860 U CN 205374860U
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Abstract
The utility model discloses an image device for operation microscope belongs to microscope technical field, and its technical essential includes on the same optical axis four lens that set up, four lens from the object to the orientation that looks like in proper order for first lens, second lens, third lens and fourth lens, the biconvex lens of first lens for having the positive refraction ability, the two concave lens s of second lens for having the negative refraction ability, the biconvex lens of third lens for having the positive refraction ability, the negative meniscus lens of fourth lens for having the negative refraction ability, the utility model aims at providing a luminance is high, small, the short novel imaging system of camera lens length for the operation microscope formation of image.
Description
Technical field
This utility model relates to a kind of microscopical imaging device, more specifically, particularly relates to a kind of imaging device for operating microscope.
Background technology
In recent years, the positive department of cerebral surgery that is applied to by operating microscope, dentistry, the application of the operations such as department of otorhinolaryngology, provide the image amplified clearly for doctor.In the case, being built in the lens imaging system in operating microscope, the optical system as operation technique record becomes particularly significant, additionally has higher requirements in image quality.Owing to existing microscopical volume is relatively big, lens length is longer, it is easy to affect the main optical path (brightness attenuating) of operating microscope, and also can affect the working place of doctor when operation.Therefore, the length how making the imaging device of operating microscope is shorter, volume is less, imaging effect is better, becomes the development new direction of operating microscope.
Utility model content
The purpose of this utility model is in that to provide a kind of imaging device for operating microscope, and this imaging device has brightness height, volume is little, lens length is short a little.
The technical solution adopted in the utility model is as follows:
A kind of imaging device for operating microscope, wherein, including four lens arranged on identical optical axis, from object to image space to lens order 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, the described lens that the 4th lens are 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 '12It is the first lens and the combined focal length of the second lens, f '34It it 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 are the first minute surface towards the face in object direction, first lens towards image space to face be the second minute surface, the second described lens are the 3rd minute surface towards the face in object direction, second lens towards image space to face be the 4th minute surface, the 3rd described lens are the 5th minute surface towards the face in object direction, 3rd lens towards image space to face be the 6th minute surface, the 4th described lens are the 7th minute surface towards the face in object direction, the 4th lens towards image space to face be the 8th minute surface；
TTL is the first minute surface central point distance to imaging surface.
Further, being provided with diaphragm S in the middle of the second lens L2 and the three lens L3, the distance of described diaphragm S and the five 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, this utility model has the beneficial effect that
Imaging device for operating microscope of the present utility model, including four lens arranged on identical optical axis, from object to image space to lens order 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, lens combination through 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 reducing 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 utility model；
Fig. 2 is the ratio chromatism, figure of imaging device of the present utility model；
Fig. 3 is chromaticity difference diagram on the axle of imaging device of the present utility model；
Fig. 4 is astigmatism and the distortion figure of imaging device of the present utility model；
Fig. 5 is the optical transfer function figure of imaging device of the present utility model.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the technical solution of the utility model is described in further detail, but does not constitute any restriction of the present utility model.
With reference to shown in Fig. 1, imaging device for operating microscope of the present utility model, including four lens arranged on identical optical axis, from object to image space to lens order respectively the first lens L1, second lens L2, 3rd lens L3 and the four 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 described lens that the 4th lens L4 is 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 reducing 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, and F/# is the image space F number of imaging device, f '12It is the first lens L1 and the combined focal length of the second lens L2, f '34Being the combined focal length of the 3rd lens L3 and the four lens L4, TTL is the first minute surface M1 central point distance to imaging surface.
It is provided with diaphragm S in the middle of the second lens L2 and the three lens L3.
Imaging device for operating microscope of the present utility model meets some parameters, is specifically shown 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.
The semiaperture of the first lens L1 and the second lens L2 of described imaging device is 9.3mm, and the semiaperture of described 3rd lens L3 and the four 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 five minute surface M5 is 6.6mm, and the semiaperture of described diaphragm S is 6.7mm.
Through the test to the imaging device for operating microscope of the present utility model, obtain chromaticity difference diagram, astigmatism and distortion figure and optical transfer function figure on the ratio chromatism, figure of this imaging device, axle, respectively if Fig. 2 is to shown in 5, being drawn by test data, the performance for its optical imagery of imaging device of operating microscope of the present utility model is more outstanding.
The foregoing is only better embodiment of the present utility model, all any amendment, equivalent replacement and improvement etc. made in spirit of the present utility model and spirit, should be included within protection domain of the present utility model.
Claims (9)
1. the imaging device for operating microscope, it is characterized in that, including four lens arranged on identical optical axis, four described lens direction from object to picture is followed successively by the first lens (L1), second lens (L2), 3rd lens (L3) and the 4th lens (L4), described the first lens (L1) are the biconvex lens with positive refractive power, described the second lens (L2) are the biconcave lens with negative refractive power, the 3rd described lens (L3) are the biconvex lens with positive refractive power, the 4th described lens (L4) are the negative meniscus lens with negative refractive power.
2. the imaging device for operating microscope according to claim 1, it is characterised 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 operating microscope according to claim 2, it is characterised in that described imaging device meets the following conditions:
f’12/f’34>4.0
Wherein f '12It is the first lens (L1) and the combined focal length of the second lens (L2), f '34It it is the combined focal length of the 3rd lens (L3) and the 4th lens (L4).
4. the imaging device for operating microscope according to claim 3, it is characterised 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 first minute surface (M1) central point distance to imaging surface.
5. the imaging device for operating microscope according to claim 4, it is characterized in that, it is provided with diaphragm (S) in the middle of the second lens (L2) and the 3rd lens (L3), 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.
6. the imaging device for operating 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 operating 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 operating 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 operating 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 |
|---|---|---|---|
| CN201620027466.5U CN205374860U (en) | 2016-01-13 | 2016-01-13 | A image device for operation microscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027466.5U CN205374860U (en) | 2016-01-13 | 2016-01-13 | A image device for operation microscope |
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| Publication Number | Publication Date |
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| CN205374860U true CN205374860U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620027466.5U Expired - Fee Related CN205374860U (en) | 2016-01-13 | 2016-01-13 | A image device for operation microscope |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425375A (en) * | 2016-01-13 | 2016-03-23 | 广西奥顺仪器有限公司 | Imaging apparatus for operation microscope |
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2016
- 2016-01-13 CN CN201620027466.5U patent/CN205374860U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425375A (en) * | 2016-01-13 | 2016-03-23 | 广西奥顺仪器有限公司 | Imaging apparatus for operation microscope |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20210113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |