CN117784385A - Rotary drum type operation microscope optical system - Google Patents
Rotary drum type operation microscope optical system Download PDFInfo
- Publication number
- CN117784385A CN117784385A CN202311727784.3A CN202311727784A CN117784385A CN 117784385 A CN117784385 A CN 117784385A CN 202311727784 A CN202311727784 A CN 202311727784A CN 117784385 A CN117784385 A CN 117784385A
- Authority
- CN
- China
- Prior art keywords
- lens
- light
- optical axis
- optical
- lens group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 91
- 238000005286 illumination Methods 0.000 claims abstract description 33
- 238000004026 adhesive bonding Methods 0.000 claims abstract description 27
- 238000003384 imaging method Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 230000005499 meniscus Effects 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 abstract description 5
- 230000005855 radiation Effects 0.000 abstract description 2
- 210000003128 head Anatomy 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 230000004075 alteration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002406 microsurgery Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Microscoopes, Condenser (AREA)
Abstract
The invention discloses a rotary drum type operation microscope optical system, which comprises an imaging system and an illumination system, wherein the imaging system consists of a large objective lens, a zoom body and an observation head which are sequentially distributed from an object surface to an image surface along an optical path, and is characterized in that the large objective lens is a first gluing lens group formed by gluing a first lens and a second lens, the focal length of the first gluing lens group ranges from 200mm to 300mm, the illumination system comprises a light source and a first light collecting lens, a light filtering device, a second light collecting lens and a reflecting mirror which are sequentially distributed along the optical path emitted by the light source, and the optical axis of the zoom body and the optical axis of the illumination system are respectively positioned at two sides of the central optical axis of the large objective lens; has the advantages of short overall length and small volume; the zoom body adopts a rotary drum type zoom mechanism, reduces the size and weight of a microscope, and has at least five-gear magnification adjustment; the heat radiation volume and the weight of the lighting system are small, and the imaging is clear and bright.
Description
Technical Field
The invention relates to an optical system, in particular to a rotary drum type operation microscope optical system.
Background
Because the operation microscope has stereoscopic vision, good illumination and flexible precise mechanical structure, the vision range of human eyes can be enlarged, and a clinician can more easily find various lesions and remove the lesions, the prior development of the microsurgery applied to various types and departments is realized.
For a clinical department of surgery with relatively simple operation, a surgeon is more inclined to use a portal and popular operation microscope, so that the requirements of small and light body and high flexibility of the surgical microscope can be met; most microscopes at present have large volume, long lens length and easy influence on the main light path of the operation microscope, and also influence the operation space of doctors during operation, which is not the optimal choice for some simple surgical operations; therefore, how to make the imaging device of the operation microscope shorter in length, smaller in size and better in imaging effect becomes the development direction of the operation microscope.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rotary drum type operation microscope optical system with shorter length and smaller overall volume, which can generate enough object plane illumination and enough uniformity to enable imaging to be clearer and brighter.
The technical scheme adopted for solving the technical problems is as follows: the rotary drum type operation microscope optical system comprises an imaging system and an illumination system, wherein the imaging system consists of a large objective lens, a zoom body and an observation head which are sequentially distributed from an object surface to an image surface along an optical path, the large objective lens is a first gluing lens group formed by gluing a first lens and a second lens, the focal length of the first gluing lens group ranges from 200mm to 300mm, for example, the focal length of an objective lens of an ophthalmic operation microscope is about 200mm, the focal length of a general surgical and otorhinology operation microscope is about 250mm, and the working focal length of neurosurgery is about 300 mm; the zoom body comprises a rotary drum with three pairs of opposite angles, and a first zoom lens combination and a second zoom lens combination which are respectively arranged on the two pairs of opposite angles of the rotary drum and have two different positive magnifications, wherein one pair of opposite angles of the rotary drum is empty, the first zoom lens combination consists of a second gluing lens group and a third gluing lens group which are respectively arranged at the different opposite angles of the pair of opposite angles of the rotary drum, the focal length of the second gluing lens group is-27.2 mm, the focal length of the third gluing lens group is 68mm, the second zoom lens combination consists of a fourth gluing lens group and a fifth gluing lens group which are respectively arranged at the different opposite angles of the other pair of opposite angles of the rotary drum, the focal length of the fourth gluing lens group is-66.5 mm, the focal length of the fifth cemented lens group is 106.4mm, the zoom body is a afocal system, namely, collimated light is input, collimated light is output, and no actual image surface exists, so the distance between the large objective lens and the zoom body, and between the observation head and the zoom body can be any value without structural limitation, the current magnification Γ of the zoom body follows the magnification formula of the telescope system, namely Γ= -f1/f2, wherein f1 is the focal length of a lens group facing an object in the zoom body, which is called a front lens group, f2 is the focal length of a lens group facing an image surface in the zoom body, which is called a rear lens group, the zoom body realizes fixed-shift zoom by using a rotary drum mechanism, namely, under the action of a mechanical knob, when the second cemented lens group and the third cemented lens group are turned into the optical system, the second cemented lens group is the front lens group of the zoom body, the third cemented lens group is the rear lens group, according to a telescopic system magnification formula Γ= -f1/f2, it can be known that the magnification of the zoom body is Γ= - (-27.2/68) =0.4 at this time; continuing to rotate the zoom body, when the fourth gluing lens group and the fifth gluing lens group are rotated into the optical system, the fourth gluing lens group is a front lens group of the zoom body, the fifth gluing lens group is a rear lens group, and the magnification of the zoom body is known to be Γ= - (-66.6/106.4) =0.6 according to a magnification formula Γ= -f1/f 2; continuing to rotate the zoom body, and transferring the lens-free zoom body into an optical system, wherein the zoom body has no magnification change, and the magnification of the zoom body is 1 at the moment; rotating the rotary drum clockwise or anticlockwise in sequence, wherein the current magnification of the zoom body is 0.4, 0.6, 1, 1.6, 2.5 or 2.5, 1.6, 1, 0.6 and 0.4 in sequence; the illumination system comprises a light source and a first light collecting lens, a light filtering device, a second light collecting lens and a reflecting mirror which are sequentially distributed along a light path emitted by the light source, wherein the reflecting mirror is used for reflecting emergent light rays of the second light collecting lens towards the direction of the large objective lens, the large objective lens is used for focusing received reflected light emitted by the reflecting mirror into round light spots and imaging the round light spots on an operation surface, an optical axis of a zoom body is positioned on one side of a central optical axis of the large objective lens, the optical axis of the illumination system is positioned on the other side of the central optical axis of the large objective lens, the optical axis of the zoom body is parallel to the optical axis of the illumination system and is positioned on the same plane with the central optical axis of the large objective lens, the distance between the optical axis of the zoom body and the central optical axis of the large objective lens is 4mm, the distance between the optical axis of the illumination system and the central optical axis of the large objective lens is 11mm, the ratio D2 of the diameter of the round light spots to the observation diameter of a view head is equal to the diameter D1, the diameter of the light spots is equal to the diameter D1, the illumination system is designed to the diameter of the light spots, and the illumination system has a high-quality illumination effect is equal, and the illumination system has no chromatic aberration, and the illumination effect is designed on the diameter and has a high-quality illumination effect.
Compared with the prior art, the invention has the advantages that the invention provides the optical system of the operation microscope with shorter length and smaller volume, the imaging optical system adopts a large objective lens, the whole system structure is compact, the large objective lens can realize the replacement of any several required working distances in 200-300 mm, the replacement of the objective lens with different focal lengths is convenient, the requirements of different operations on different working distances are met, and the objective lens with continuously adjustable 200-300 mm can be replaced to cover various departments simultaneously; the zoom body adopts a rotary drum type zoom mechanism, reduces the size and weight of a microscope, has at least five-gear magnification adjustment, and has stable image surface, good image quality and balanced aberration correction in the zoom process; the illumination light transmitted to the reflector is reflected to the large objective lens through the reflector, the light transmission direction is turned, the illumination light finally forms a round illumination spot overlapped with the central position of the operation surface observed by the operation microscope after passing through the large objective lens, the imaging view field is completely covered, the illumination spot has uniform brightness, the edge is clear and has no chromatic aberration, the optical axis of the zoom body and the optical axis of the illumination system are respectively positioned at two sides of the central optical axis of the large objective lens, and interference can not be generated between the round illumination spot and the imaging view field; the illumination system adopts an internal LED cold light source for illumination, so that the influence of a complex structure caused by the conduction of an external light source and an optical fiber is effectively solved, the volume and the weight of a radiator are reduced, and the miniaturization of the light source can be realized; meanwhile, the damage to the tissue of the operation surface caused by heat radiation brought by a light source such as a halogen lamp and a xenon lamp can be avoided, and enough object plane illumination and enough uniformity are generated, so that the imaging is clearer and brighter.
The first lens is a meniscus lens with negative focal power, and the second lens is a biconvex lens with positive focal power.
The second cemented lens group is formed by cementing a third lens and a fourth lens, wherein the third lens is a meniscus lens with positive focal power, and the fourth lens is a biconcave lens with negative focal power; the third cemented lens group is formed by a fifth lens cemented with a sixth lens, the fifth lens is a biconvex lens with positive focal power, and the sixth lens is a meniscus lens with negative focal power; the fourth cemented lens group is formed by a seventh lens and an eighth lens, wherein the seventh lens is a meniscus lens with positive focal power, and the eighth lens is a biconcave lens with negative focal power; the fifth cemented lens group is formed by a ninth lens cemented with a tenth lens, the ninth lens is a biconvex lens with positive focal power, and the tenth lens is a meniscus lens with negative focal power.
The observation head consists of a first 90-degree right-angle prism, a second 90-degree right-angle prism, a third 90-degree right-angle prism, an eleventh lens, a twelfth lens, a 180-degree right-angle prism, a fourth 90-degree right-angle prism and a thirteenth lens which are sequentially distributed along an optical path from an object plane to an image plane, wherein the first 90-degree right-angle prism and the second 90-degree right-angle prism are glued to form a beam-splitting prism, the beam-splitting prism is used for splitting incident light on a gluing surface to form reflected light and transmitted light, the reflected light is used as incident light of imaging equipment, the transmitted light is human eye observation light, the eleventh lens is a plano-concave lens with negative optical power, the twelfth lens is a plano-concave lens with negative optical power, and the thirteenth lens is a meniscus lens with negative optical power. The operation microscope adopts a light splitting system, the incident light is split on the bonding surface of the light splitting prism, the reflected light is used as the incident light of the imaging device, the transmitted light is the human eye observation light, and the operation microscope can be used with an image sensor, such as a CCD camera, and can be used with an eyepiece for observation by an operator.
The eleventh lens, the twelfth lens and the thirteenth lens form a tube lens group, and the focal length F of the tube lens group Tube mirror Total magnification of system mag=f at 170mm Tube mirror /F Large objective lens * Γ, where F Large objective lens F is the focal length of the first cemented lens group Large objective lens Is 200mm, 250mm or 300mm, Γ represents the current magnification of the zoom.
And the eleventh lens and the twelfth lens are glued to form a sixth glued lens group.
The light source is an LED lamp, the first light collecting lens is an aspheric biconvex lens with positive focal power, and light rays emitted by an LED bulb can be received at a maximum angle, so that the utilization efficiency is improved; the optical filter device comprises a circular diaphragm disc, diaphragm holes, an orange color filter and a green color filter are uniformly formed in the circular diaphragm disc around the circle center, different diaphragms can be selected through a transmission mechanism arranged in the circular diaphragm disc, the second light collecting lens is a biconvex lens with positive focal power, and the focal length range of the second light collecting lens is 50-75 mm.
Drawings
FIG. 1 is a diagram of an optical system of the present invention;
FIG. 2 is a schematic diagram of an optical system of the illumination system of the present invention;
fig. 3 is a graph of MTF for an imaging system of the present invention.
Description of the embodiments
The invention is described in further detail below with reference to the embodiments of the drawings.
The optical system of the rotary drum type operation microscope is shown in fig. 1 and 2, and comprises an imaging system and an illumination system, wherein the imaging system consists of a large objective lens, a zoom body and an observation head which are sequentially distributed from an object surface to an image surface along an optical path, the large objective lens is a first gluing lens group GL1 formed by gluing a first lens L1 and a second lens L2, the focal length of the first gluing lens group GL1 ranges from 200mm to 300mm, for example, the focal length of an objective lens of an ophthalmic operation microscope is about 200mm, the focal length of a general surgical and otorhinology operation microscope is about 250mm, the working focal length of neurosurgery is about 300mm, the first lens L1 is a meniscus lens with negative optical power, and the second lens L2 is a biconvex lens with positive optical power; the zoom body comprises a rotary drum with three pairs of opposite angles and a double lens combination with two different positive magnifications, wherein the double lens combination is respectively arranged on two pairs of opposite angles of the rotary drum, one pair of opposite angles of the rotary drum is empty, the rotary drum is a regular hexahedron with three pairs of opposite angles, the zoom body comprises a first double lens combination and a second double lens combination, the first double lens combination consists of a second bonding lens group GL2 and a third bonding lens group GL3, the second bonding lens group GL2 is arranged at different opposite angles of one pair of opposite angles of the rotary drum, the focal length of the second bonding lens group GL2 is-27.2 mm, the second bonding lens group GL2 is formed by bonding a third lens L3 and a fourth lens L4, the third lens L3 is a meniscus lens with positive focal power, and the fourth lens L4 is a biconcave lens with negative focal power; the focal length of the third cemented lens group GL3 is 68mm, the third cemented lens group GL3 is composed of a fifth lens L5 cemented with a sixth lens L6, the fifth lens L5 is a biconvex lens with positive power, and the sixth lens L6 is a meniscus lens with negative power; the second lens combination consists of a fourth bonding lens group GL4 and a fifth bonding lens group GL5 which are respectively arranged at different opposite angles of the other pair of opposite angles of the rotary drum, the focal length of the fourth bonding lens group GL4 is 66.5mm, the fourth bonding lens group GL4 consists of a seventh lens L7 and an eighth lens L8 which are bonded, the seventh lens L7 is a meniscus lens with positive focal power, and the eighth lens L8 is a biconcave lens with negative focal power; the focal length of the fifth cemented lens group GL5 is 106.4mm, the fifth cemented lens group GL5 is composed of a ninth lens L9 cemented with a tenth lens L10, the ninth lens L9 is a biconvex lens with positive power, and the tenth lens L10 is a meniscus lens with negative power;
the lighting system comprises a light source G1, a first light collecting lens G2, a light filtering device, a second light collecting lens G4 and a reflecting mirror G5 which are sequentially distributed along a light path emitted by the light source G1, wherein the light source G1 is an LED lamp, the first light collecting lens G2 is an aspheric biconvex lens with positive focal power, the light filtering device comprises a round diaphragm disc G3, diaphragm holes (not shown), an orange color filter (not shown) and a green color filter (not shown) are uniformly arranged on the round diaphragm disc G3 around the circle center, the second light collecting lens G4 is a biconvex lens with positive focal power, the focal length range of the second light collecting lens G4 is 50-75 mm, the reflecting mirror G5 is used for reflecting emergent light rays of the second light collecting lens G4 towards the direction of a large objective lens, the large objective lens is used for focusing received reflected light emitted by the reflector G5 into a circular light spot and imaging the circular light spot on an operation surface, the optical axis of the zoom body is positioned on one side of the central optical axis of the large objective lens, the optical axis of the illumination system is positioned on the other side of the central optical axis of the large objective lens, the optical axes of the zoom body and the illumination system are mutually parallel and are positioned on the same plane with the central optical axis of the large objective lens, the distance between the optical axis of the zoom body and the central optical axis of the large objective lens is 4mm, the distance between the optical axis of the illumination system and the central optical axis of the large objective lens is 11mm, and the ratio relation D2/D1 between the diameter D2 of the circular light spot and the observation field diameter D1 of the observation head is 1.5-2.
The observation head consists of a first 90-degree right-angle prism P1, a second 90-degree right-angle prism P2, a third 90-degree right-angle prism P3, an eleventh lens L11, a twelfth lens L12, a 180-degree right-angle prism P4, a fourth 90-degree right-angle prism P5 and a thirteenth lens which are sequentially distributed along the light path from the object plane to the image plane, wherein the first 90-degree right-angle prism P1 and the second 90-degree right-angle prism P2 are glued to form a beam splitting prism, the beam splitting prism is used for splitting incident light on the glued surface to form reflected light and transmitted light, the reflected light is used as incident light of the imaging device, the transmitted light is human eye observation light, the eleventh lens L11 is a plano-concave lens with negative optical power, the twelfth lens L12 is a plano-concave lens with negative optical power, the thirteenth lens is a meniscus lens with negative optical power, the eleventh lens L11, the twelfth lens L12 and the thirteenth lens form a tube lens group, and the focal length F of the tube lens group Tube mirror Total magnification of system mag=f at 170mm Tube mirror /F Large objective lens * Γ, where F Large objective lens Is the focal length, F, of the first cemented lens group GL1 Large objective lens And the magnification of the zoom body is 200mm, 250mm or 300mm, and Γ represents the current magnification of the zoom body, and the eleventh lens L11 and the twelfth lens L12 are glued to form a sixth gluing lens group GL6.
The working principle of the above embodiment is as follows: the light is transmitted by the large objective lens to form collimated light and enters the zoom body, the zoom body is a afocal system, namely the collimated light is input, the collimated light is output, and no actual image surface exists, so that the distance between the large objective lens and the zoom body, the distance between the observation head and the zoom body are not limited by the structure, the current magnification gamma of the zoom body can be any value, the current magnification gamma of the zoom body follows a telescope system magnification formula, namely gamma= -f1/f2, wherein f1 is the focal length of a lens group facing an object in the zoom body, namely a front lens group, f2 is the focal length of a lens group facing an image surface in the zoom body, namely a rear lens group, the zoom body realizes fixed-shift zoom by using a rotary drum mechanism, namely under the action of a mechanical knob, when the second glue lens group GL2 and the third glue lens group GL3 are transferred into the optical system, the second glue lens group GL2 is the front lens group of the zoom body, the third lens group GL3 is the rear lens group, and the magnification of the zoom body can be known as gamma-1/f 2= -f 2/f 2 is 1/f2 (= 0.68, =; continuing to rotate the zoom body, when the fourth gluing lens group GL4 and the fifth gluing lens group GL5 are turned into the optical system, the fourth gluing lens group GL4 is a previous lens group of the zoom body, the fifth gluing lens group GL5 is a next lens group, and according to a magnification formula Γ= -f1/f2, the magnification of the zoom body is Γ= - (-66.6/106.4) =0.6; continuing to rotate the zoom body, and transferring the lens-free zoom body into an optical system, wherein the zoom body has no magnification change, and the magnification of the zoom body is 1 at the moment; the rotary drum is rotated clockwise or anticlockwise in sequence, and the current magnification of the zoom body is 0.4, 0.6, 1, 1.6, 2.5 or 2.5, 1.6, 1, 0.6 and 0.4 in sequence. In the above examples, all lenses were glass from dujingming corporation, all lenses were multilayer antireflection films, and the reflectance was less than 0.5%.
The design parameters of one example of this embodiment are shown in table 1.
Table 1 imaging system design data
Design parameters for another example of this embodiment are shown in table 2.
Table 2 lighting system design data
The structure diagram of the illumination system of the optical system is shown in fig. 2, and finally, the circular light spots reach the operation surface to provide illumination, the light source G1 adopts a white light LED lamp, and the white light LED lamp with the power of 5W, 10W or 15W can be selected according to the requirements of a department, so that different brightness requirements can be provided by different powers, and an orange color filter and a green color filter on the circular diaphragm disc are circular colored glass plates.
Fig. 3 is an MTF graph of an optical system, reflecting that the imaging quality of the present imaging optical system satisfies the resolution requirement, and the imaging quality is good.
Claims (9)
1. The utility model provides a rotary drum operation microscope optical system, includes imaging system and lighting system, imaging system by from the object plane to the image plane along the big objective, zoom body and the viewing head that light path distributes in proper order constitute, its characterized in that big objective be by first lens and the first veneer mirror group that the second lens is glued and is constituteed, the scope of the focal length of first veneer mirror group be 200~300mm, lighting system include light source and along the light path that the light source sent first light collector, filter equipment, second light collector and reflector that light source distributes in proper order, the reflector be used for with the emergent light of second light collector towards big objective place orientation reflection, big objective be used for with received by the reflector send reflected light focus into circular facula and image on the operation plane, the optical axis of zoom body be located the one side of the center optical axis of big objective, the optical axis of lighting system be located the opposite side of the center of big optical axis, the optical axis of zoom body and the optical axis of optical axis and the optical axis of the same diameter of the lens and the viewing head that the optical axis of the mirror is parallel with 1D of 1 the diameter of the viewing head is 1 the diameter of the round objective is 2.1.
2. A rotary drum surgical microscope optical system according to claim 1, wherein the first lens is a meniscus lens having negative optical power and the second lens is a biconvex lens having positive optical power.
3. The optical system of claim 1, wherein the distance between the optical axis of the zoom body and the central optical axis of the large objective is 4mm, and the distance between the optical axis of the illumination system and the central optical axis of the large objective is 11mm.
4. The optical system of claim 1, wherein the zoom body comprises a rotary drum having three pairs of opposite angles, and a first and a second lens combination having two different positive magnifications respectively disposed on the two pairs of opposite angles of the rotary drum, one pair of opposite angles of the rotary drum being empty, the first lens combination being composed of a second and a third lens group respectively disposed on the different opposite angles of the pair of opposite angles of the rotary drum, the focal length of the second lens group being-27.2 mm, the focal length of the third lens group being 68mm, the second lens combination being composed of a fourth and a fifth lens group respectively disposed on the different opposite angles of the other pair of opposite angles of the rotary drum, the focal length of the fourth lens group being-66.5 mm, the focal length of the fifth lens group being 106.4mm.
5. The optical system of claim 4, wherein the second cemented lens group is composed of a third lens cemented with a fourth lens, the third lens is a meniscus lens with positive power, and the fourth lens is a biconcave lens with negative power; the third cemented lens group is formed by a fifth lens cemented with a sixth lens, the fifth lens is a biconvex lens with positive focal power, and the sixth lens is a meniscus lens with negative focal power; the fourth cemented lens group is formed by a seventh lens and an eighth lens, wherein the seventh lens is a meniscus lens with positive focal power, and the eighth lens is a biconcave lens with negative focal power; the fifth cemented lens group is formed by a ninth lens cemented with a tenth lens, the ninth lens is a biconvex lens with positive focal power, and the tenth lens is a meniscus lens with negative focal power.
6. The optical system of claim 1, wherein the observation head comprises a first 90 ° rectangular prism, a second 90 ° rectangular prism, a third 90 ° rectangular prism, an eleventh lens, a twelfth lens, a 180 ° rectangular prism, a fourth 90 ° rectangular prism and a thirteenth lens which are sequentially distributed along the optical path from the object plane to the image plane, the first 90 ° rectangular prism and the second 90 ° rectangular prism are glued to form a beam splitting prism, the beam splitting prism is used for splitting incident light on the gluing surface to form reflected light and transmitted light, the reflected light is used as incident light of the imaging device, the transmitted light is human eye observation light, the eleventh lens is a plano-concave lens with negative optical power, the twelfth lens is a plano-concave lens with negative optical power, and the thirteenth lens is a meniscus lens with negative optical power.
7. The optical system of claim 6, wherein the eleventh lens, the twelfth lens and the thirteenth lens form a tube lens group, and the focal length F of the tube lens group Tube mirror Total magnification of system mag=f at 170mm Tube mirror /F Large objective lens * Γ, where F Large objective lens F is the focal length of the first cemented lens group Large objective lens Is 200mm, 250mm or 300mm, Γ represents the current magnification of the zoom.
8. The optical system of claim 6, wherein said eleventh lens and said twelfth lens are combined to form a sixth combined lens group.
9. The rotary drum type operation microscope optical system according to claim 1, wherein the light source is an LED lamp, the first light collecting lens is an aspheric biconvex lens with positive focal power, the focal length range of the first light collecting lens is 10-15 mm, the optical filtering device comprises a circular diaphragm disc, diaphragm holes, orange color filters and green color filters are uniformly arranged on the circular diaphragm disc around the circle center, the second light collecting lens is a biconvex lens with positive focal power, and the focal length range of the second light collecting lens is 50-75 mm. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311727784.3A CN117784385A (en) | 2023-12-15 | 2023-12-15 | Rotary drum type operation microscope optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311727784.3A CN117784385A (en) | 2023-12-15 | 2023-12-15 | Rotary drum type operation microscope optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117784385A true CN117784385A (en) | 2024-03-29 |
Family
ID=90395465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311727784.3A Pending CN117784385A (en) | 2023-12-15 | 2023-12-15 | Rotary drum type operation microscope optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117784385A (en) |
-
2023
- 2023-12-15 CN CN202311727784.3A patent/CN117784385A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101001567B (en) | Illumination device and observation device | |
| CN102298202B (en) | Varifocus lens | |
| EP2706391A1 (en) | Optical unit and endoscope | |
| CA3007263A1 (en) | Objective lens for an endoscope and endoscope | |
| US9715097B2 (en) | Stereomicroscope having a main observer beam path and a co-observer beam path | |
| CN111198472B (en) | Projection lens and laser projection device | |
| US5539971A (en) | Method of manufacturing an endoscope | |
| JP2015135511A (en) | Camera adaptor for medical-optical observation instrument and camera-adaptor combination | |
| CN113504654A (en) | Near-to-eye display optical system | |
| CN213876160U (en) | Reflective wide-angle lens | |
| CN114442299B (en) | Optical imaging system of dental operation microscope | |
| CN117784385A (en) | Rotary drum type operation microscope optical system | |
| CN108549145B (en) | New structure of single-object binocular | |
| CN114176485B (en) | Endoscope device camera polarized light optical system, camera and endoscope device | |
| JPH08211286A (en) | Retrofocus type projecting lens | |
| JP2000284184A (en) | Parallel system stereoscopic microscope and objective lens | |
| CN110196487B (en) | Telecentric lens | |
| JP2014115496A (en) | Coaxial illumination variable power optical device and manufacturing device employing the same, or inspection device employing the same, and coaxial illumination variable power optical device telecentricity correction method | |
| CN113341550A (en) | Zoom lens applied to projection | |
| CN105286761A (en) | Electronic endoscope | |
| CN110941080A (en) | Global high-magnification lens | |
| CN216792578U (en) | Shared front-object lens with long working distance | |
| GB2573928A (en) | Two-group-type zoom lens and usage method therefor, and imaging apparatus comprising same | |
| CN216285973U (en) | Near-to-eye display optical system | |
| CN215959772U (en) | Zooming adapter for wide spectrum imaging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |