CN109431459B - Novel fundus imaging lens - Google Patents
Novel fundus imaging lens Download PDFInfo
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- CN109431459B CN109431459B CN201811617435.5A CN201811617435A CN109431459B CN 109431459 B CN109431459 B CN 109431459B CN 201811617435 A CN201811617435 A CN 201811617435A CN 109431459 B CN109431459 B CN 109431459B
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- light
- lens
- lens group
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- 238000003384 imaging method Methods 0.000 title claims abstract description 47
- 238000005286 illumination Methods 0.000 claims abstract description 83
- 230000005540 biological transmission Effects 0.000 claims abstract description 13
- 230000033228 biological regulation Effects 0.000 claims description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 7
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 7
- 241001330002 Bambuseae Species 0.000 claims description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 7
- 239000011425 bamboo Substances 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000003161 choroid Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000001328 optic nerve Anatomy 0.000 description 1
- 231100000915 pathological change Toxicity 0.000 description 1
- 230000036285 pathological change Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The invention relates to a novel fundus imaging lens, which comprises an illumination unit and an imaging unit, wherein the illumination unit comprises a light source assembly, an illumination frame and an illumination fixation frame which are sequentially arranged along an illumination light transmission light path, and the illumination fixation frame is provided with a light through hole and a first reflecting mirror with an adjustable inclination angle; the imaging unit comprises a first lens group frame, a first middle frame, a second lens group frame, a third lens group frame and a fourth lens group frame which are sequentially arranged from the object side to the image side, wherein a first light splitting sheet located on a transmission light path of imaging light is arranged in the first middle frame and is communicated with the light through hole, the first light splitting sheet is also located on a transmission light path of illumination light at the same time, so that illumination light emitted from the light through hole after being reflected by the first reflecting mirror can be irradiated to the object side after being reflected by the first light splitting sheet, and the illumination light can be effectively ensured to be transmitted in the object side according to the design direction by adjusting the inclination angle of the first reflecting mirror, so that the effect of an imaging picture is improved.
Description
[ field of technology ]
The invention relates to the field of medical instruments, in particular to a novel fundus imaging lens.
[ background Art ]
The fundus imaging equipment is an important auxiliary equipment for diagnosis and treatment of fundus diseases, medical staff can check whether the optic nerve, retina, choroid and refractive medium of the fundus have pathological changes or not through the fundus imaging equipment, and diagnosis and disease judgment can be carried out on other system diseases through the assistance of the fundus imaging equipment, and the earlier detection of the disease is more beneficial to clinical treatment; the fundus imaging apparatus in the prior art mainly includes an illumination portion and an imaging portion, and since errors are inevitably generated in the manufacturing and assembling processes of the product, deviation of an illumination range of illumination light generated by the illumination portion from an observation or capturing range of the imaging portion is easily caused, thereby affecting an imaging picture effect.
The invention is researched and proposed for overcoming the defects of the prior art.
[ invention ]
The technical problem to be solved by the invention is to provide a novel fundus imaging lens with good imaging picture effect and compact structure.
In order to solve the technical problems, the invention adopts the following technical scheme: the novel fundus imaging lens comprises an illumination unit and an imaging unit, wherein the illumination unit comprises a light source assembly, an illumination frame and an illumination fixation frame, wherein the light source assembly, the illumination frame and the illumination fixation frame are sequentially arranged along an illumination light transmission light path, a condensing lens group is arranged in the illumination fixation frame, a first reflecting mirror is arranged in the illumination fixation frame, the first reflecting mirror is used for changing the propagation direction of illumination light, the inclination angle of the first reflecting mirror is adjustable, and a light through hole communicated with the imaging unit is further formed in the illumination fixation frame; the imaging unit comprises a first lens group frame, a first middle frame, a second lens group frame, a third lens group frame and a fourth lens group frame, wherein the first lens group frame, the first middle frame, the second lens group frame, the third lens group frame and the fourth lens group frame are sequentially arranged from an object side to an image side, the lenses are arranged in the first lens group frame, the lenses are arranged in the third lens group frame, the lenses are arranged in the fourth lens group frame, the first middle frame is internally provided with a first light splitting sheet located on a transmission light path of imaging light, the first middle frame is communicated with a light through hole, and the first light splitting sheet is also located on a transmission light path of illumination light at the same time, so that illumination light emitted from the light through hole after being reflected by a first reflecting mirror can be irradiated to the object side after being reflected by the first light splitting sheet. The illumination light emitted by the light source assembly is focused by the condensing lens group in the illumination frame, then sequentially reflected by the first reflecting mirror and the first light splitting sheet and finally irradiates the object side, an imaging picture can be observed on the image side through the imaging unit after the object side is illuminated, or captured and shot through instruments such as a camera arranged on the image side, and the like, by adjusting the inclination angle of the first reflecting mirror, the illumination light can be effectively ensured to be transmitted along the design direction so as to accurately irradiate the object side, and the effect of the imaging picture is improved.
The novel fundus imaging lens is characterized in that the first light splitting sheet is a polarization light splitting sheet.
The novel fundus imaging lens is characterized in that the reflection adjusting frame is arranged in the illumination fixation frame, the top of the reflection adjusting frame is rotatably arranged at the top of the illumination fixation frame, the inner side surface of the illumination fixation frame is also provided with the clamping groove, the lower part of the reflection adjusting frame is arranged in the clamping groove and can slide relative to the clamping groove, the illumination fixation frame is also provided with the adjusting part, the adjusting part is connected to the lower part of the reflection adjusting frame and can drive the reflection adjusting frame to slide in the clamping groove, and the first reflecting mirror is arranged on the reflection adjusting frame so that the inclination angle of the first reflecting mirror can be adjusted through the adjusting part; one end of a reflection adjusting frame provided with a reflecting mirror is hinged to the illumination fixation frame, and the position of the other end of the reflection adjusting frame in the clamping groove is adjusted through an adjusting part, so that the inclination angle of the reflecting mirror is adjusted.
The novel fundus imaging lens is characterized in that the contrast light source is further arranged on the illumination fixation frame, the second reflecting mirror and the second light splitting piece are sequentially arranged on the outgoing light path of the contrast light source, the second light splitting piece is located between the illumination frame and the first reflecting mirror at the same time, namely, the second light splitting piece is located on the transmission light path of illumination light, the illumination light firstly transmits the second light splitting piece before irradiating the first reflecting mirror, and the outgoing light of the contrast light source is reflected to the second light splitting piece by the second reflecting mirror and is transmitted to the first reflecting mirror along the same light path with the illumination light of the transmitted second light splitting piece after being reflected by the second light splitting piece.
The novel fundus imaging lens, as described above, the outer surface of the third lens group frame is sleeved with a focusing cylinder, the second lens group frame is inserted in the third lens group frame, the second lens group frame, the third lens group frame and the focusing cylinder are coaxially arranged, the inner side wall of the focusing cylinder is provided with a spiral groove, the outer surface of the second lens group frame is provided with a guide post, the side surface of the third lens group frame is provided with a guide groove along the axial direction, the guide post is inserted into the guide groove and inserted into the spiral groove after penetrating out of the guide groove, a sliding fit is formed between the guide post and the spiral groove, and a driving motor for controlling the focusing cylinder to rotate is also arranged on the third lens group frame; the driving motor drives the focusing cylinder to rotate, and the rotary motion of the focusing cylinder is converted into the linear reciprocating motion of the second lens group frame in the third lens group frame through the sliding fit between the spiral groove and the guide post and between the guide post and the guide groove, so that the focusing function of the imaging unit is realized.
The novel fundus imaging lens comprises the light source assembly and the prism frame, wherein the prism frame is used for being connected with the light frame, the light source assembly comprises an infrared light source and a white light source, the prism frame is internally provided with the reflecting prism group, and illumination light emitted by the light source is transmitted into the light frame after being reflected by the reflecting prism group.
Compared with the prior art, the invention can achieve the following effects: the novel fundus imaging lens realizes adjustment of the propagation light path of illumination light through angle adjustment of the reflecting mirror, overcomes the defect of parts in processing to enable an imaging picture to achieve the best effect, is simple and quick to operate, and has a simplified and compact structure by skillfully combining the illumination unit and the imaging unit through arranging the beam splitter inside the lens.
[ description of the drawings ]
The invention is described in further detail below with reference to the attached drawing figures, wherein:
fig. 1 is a perspective view of the novel fundus imaging lens of the present invention.
Fig. 2 is a cross-sectional view of the novel fundus imaging lens of the present invention.
[ detailed description ] of the invention
The following detailed description of specific embodiments of the invention refers to the accompanying drawings.
As shown in fig. 1 and fig. 2, a novel fundus imaging lens comprises an illumination unit and an imaging unit, wherein the illumination unit comprises a light source assembly 8, an illumination frame 9 and an illumination fixation frame 10 which are sequentially arranged along an illumination light transmission light path, the light source assembly 8 comprises an illumination light source 81 and a prism frame 82, the illumination light source 81 preferably comprises an infrared light source and a white light source, the light source assembly 8 is connected with the illumination frame 9 through the prism frame 82, a reflecting prism group 83 is arranged in the prism frame 82, illumination light emitted by the illumination light source 81 is reflected by the reflecting prism group 83 and then propagates into the illumination frame 9, a condensing lens group is arranged in the illumination frame 9, a first reflecting mirror 101 is arranged in the illumination fixation frame 10, and the inclination angle of the first reflecting mirror 101 is adjustable; the imaging unit comprises a first lens group frame 1, a first middle frame 5, a second middle frame 6, a second lens group frame 2, a third lens group frame 3 and a fourth lens group frame 4, wherein the first lens group frame 1, the first middle frame 5, the second middle frame 6, the second lens group frame 2, the third lens group frame 3 and the fourth lens group frame 4 are sequentially arranged from an object side 008 to an image side 009, the first lens group frame 3 is internally provided with lenses, a first light splitting sheet 51 is arranged in the first middle frame 5 and is positioned on a transmission light path of imaging light, and the first light splitting sheet 51 is preferably a polarization light splitting sheet; the illumination fixation frame 10 is further provided with a light-transmitting hole 102, the first intermediate frame 5 is communicated with the light-transmitting hole 102, and the first light-splitting sheet 51 is also located on a light transmission path of illumination light, so that the illumination light is reflected by the first reflecting mirror 101, then irradiates the first light-splitting sheet 51 through the light-transmitting hole 102, and irradiates the object side 008 after being reflected by the first light-splitting sheet 51, and the object side 008 is illuminated.
Preferably, a reflection adjusting frame 103 is disposed in the illumination fixation frame 10, and the first reflecting mirror 101 is mounted on the reflection adjusting frame 103; the top of reflection regulation frame 103 articulates in the top of illumination looks frame 10 admittedly, illumination looks frame 10's medial surface still is equipped with draw-in groove 104, reflection regulation frame 103's lower part slidably locates in draw-in groove 104, illumination looks frame 10 is last still to be equipped with adjustment part 105, adjustment part 105 is connected with reflection regulation frame 103's lower part and can drive reflection regulation frame 103 and slide in draw-in groove 104 thereby makes reflection regulation frame 101 rotate around the pin joint and reaches the purpose of adjustment first speculum 101 inclination.
Preferably, the illumination fixation frame 10 is further provided with a target light source 106, a second reflecting mirror 107 and a second light splitting piece 108 are sequentially arranged on an outgoing light path of the target light source 106, and the second light splitting piece 108 is also positioned between the illumination frame 9 and the first reflecting mirror 101; the light emitted from the target light source 102 is reflected by the second reflecting mirror 107 to the second light-splitting sheet 108, and then is reflected by the second light-splitting sheet 108 and propagates to the first reflecting mirror 101 along the same optical path as the illumination light transmitted through the second light-splitting sheet 108.
Preferably, the outer surface cover of third lens group frame 3 is equipped with and focuses a section of thick bamboo 7, second lens group frame 2 inserts and locates in the third lens group frame 3, second lens group frame 2, third lens group frame 3 and focus a section of thick bamboo 7 coaxial setting, spiral groove 71 has been seted up to the inner wall of focusing a section of thick bamboo 7, second lens group frame 2 surface is equipped with guide pillar 21, 3 side of third lens group frame is equipped with along axial guide slot 31, guide pillar 21 inserts guide slot 31 and inserts in spiral groove 71 after wearing out guide slot 31, form sliding fit between guide pillar 21 and the spiral groove 71, still install on the third lens group frame 3 and be used for controlling focusing a 7 pivoted driving motor 72.
Claims (3)
1. The novel fundus imaging lens comprises an illumination unit and an imaging unit, and is characterized in that: the illumination unit comprises a light source assembly (8), an illumination frame (9) with a condensing lens group and an illumination fixation frame (10) which are sequentially arranged along an illumination light transmission light path, a first reflecting mirror (101) with an adjustable inclination angle is arranged in the illumination fixation frame (10), a light passing hole (102) communicated with an imaging unit is further formed in the illumination fixation frame (10), the imaging unit comprises a first lens group frame (1), a first middle frame (5), a second middle frame (6), a second lens group frame (2) with a lens arranged in the interior, a third lens group frame (3) with a lens arranged in the interior and a fourth lens group frame (4) with a lens arranged in the interior, the first middle frame (5) is internally provided with a first light splitting sheet (51) positioned on the transmission light path of imaging light and communicated with the light passing hole (102), the first light splitting sheet (51) is simultaneously positioned on the transmission light path from an object side (008) to an image side (009), so that the first light splitting sheet (101) is reflected by the first reflecting mirror (101) to be reflected by the first light splitting frame (101), the top of reflection regulation frame (103) rotationally locates the top of illumination fixation frame (10), the medial surface of illumination fixation frame (10) still is equipped with draw-in groove (104), the lower part of reflection regulation frame (103) is located draw-in groove (104) and can be relative draw-in groove (104) slip, still be equipped with adjustment part (105) on illumination fixation frame (10), adjustment part (105) connect in the lower part of reflection regulation frame (103) and can drive reflection regulation frame (103) are in slide in draw-in groove (104), thereby first speculum (101) install in on reflection regulation frame (103) accessible adjustment part (105) are adjusted the inclination of first speculum (101), still be provided with on illumination fixation frame (10) to mark light source (106), set gradually second speculum (107) and second light splitter (108) on the outgoing optical path to mark light source (106), second speculum (108) are connected in the lower part of reflection regulation frame (103) and can drive reflection regulation frame (103) are in draw-in groove (104), thereby accessible adjustment part (105) are adjusted first speculum (101) inclination, the illumination fixation frame (10) is last to second light splitter (108) are located simultaneously to second speculum (108) and second light splitter (101) are followed simultaneously.
2. The novel fundus imaging lens of claim 1, wherein: the outer surface cover of third lens crowd frame (3) is equipped with focusing section of thick bamboo (7), in second lens crowd frame (2) were inserted and are located third lens crowd frame (3), second lens crowd frame (2), third lens crowd frame (3) and focusing section of thick bamboo (7) coaxial setting, spiral groove (71) have been seted up to focusing section of thick bamboo (7) inside wall, second lens crowd frame (2) surface is equipped with guide pillar (21), third lens crowd frame (3) side is equipped with along axial guide slot (31), guide pillar (21) insert guide slot (31) and insert in spiral groove (71) after wearing out guide slot (31), form sliding fit between guide pillar (21) and spiral groove (71), still install on third lens crowd frame (3) and be used for controlling focusing section of thick bamboo (7) pivoted drive motor (72).
3. The novel fundus imaging lens of claim 1, wherein: the light source assembly (8) comprises an illumination light source (81) and a prism frame (82) used for being connected with the illumination frame (9), the illumination light source (81) comprises an infrared light source and a white light source, a reflecting prism group (83) is arranged in the prism frame (82), and illumination light emitted by the illumination light source (81) is reflected by the reflecting prism group (83) and then is transmitted into the illumination frame (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617435.5A CN109431459B (en) | 2018-12-28 | 2018-12-28 | Novel fundus imaging lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617435.5A CN109431459B (en) | 2018-12-28 | 2018-12-28 | Novel fundus imaging lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109431459A CN109431459A (en) | 2019-03-08 |
| CN109431459B true CN109431459B (en) | 2024-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811617435.5A Active CN109431459B (en) | 2018-12-28 | 2018-12-28 | Novel fundus imaging lens |
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| Country | Link |
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| CN (1) | CN109431459B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2079479T3 (en) * | 1990-07-12 | 1996-01-16 | Montes Juan Dominguez | INTEGRATED METHOD AND OPTICAL SYSTEM FOR CAPTURING, COPYING AND PLAYING THREE-DIMENSIONALLY STATIC AND MOVING IMAGES. |
| JPH08256987A (en) * | 1995-03-24 | 1996-10-08 | Canon Inc | Fundus camera |
| WO2009106298A1 (en) * | 2008-02-28 | 2009-09-03 | Carl Zeiss Meditec Ag | Ophthalmologic apparatus and method for the observation, examination, diagnosis, and/or treatment of an eye |
| CN102188231A (en) * | 2011-05-23 | 2011-09-21 | 中国科学院光电技术研究所 | A Zoom Multi-channel Human Eye Retina Microscopic Imaging System |
| CN102283633A (en) * | 2011-07-19 | 2011-12-21 | 中国科学院光电技术研究所 | An Adaptive Optics Micro Perimeter |
| CN103393401A (en) * | 2013-08-06 | 2013-11-20 | 中国科学院光电技术研究所 | Double wavefront corrector living body human eye retina high-resolution imaging system |
| CN107584207A (en) * | 2017-10-25 | 2018-01-16 | 广州镭码标识设备有限公司 | Laser marker and its light modulating device |
| CN207613785U (en) * | 2017-04-24 | 2018-07-17 | 北京新创恒远科技发展有限公司 | A kind of fundus imaging device based on mobile device |
| CN108535932A (en) * | 2018-05-30 | 2018-09-14 | 中国工程物理研究院激光聚变研究中心 | The debugging apparatus and adjustment method of a kind of nearly far field light path simultaneously |
| CN209518854U (en) * | 2018-12-28 | 2019-10-22 | 中山联合光电科技股份有限公司 | A kind of new structure of fundus imaging camera lens |
-
2018
- 2018-12-28 CN CN201811617435.5A patent/CN109431459B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2079479T3 (en) * | 1990-07-12 | 1996-01-16 | Montes Juan Dominguez | INTEGRATED METHOD AND OPTICAL SYSTEM FOR CAPTURING, COPYING AND PLAYING THREE-DIMENSIONALLY STATIC AND MOVING IMAGES. |
| JPH08256987A (en) * | 1995-03-24 | 1996-10-08 | Canon Inc | Fundus camera |
| WO2009106298A1 (en) * | 2008-02-28 | 2009-09-03 | Carl Zeiss Meditec Ag | Ophthalmologic apparatus and method for the observation, examination, diagnosis, and/or treatment of an eye |
| DE102008011836A1 (en) * | 2008-02-28 | 2009-09-03 | Carl Zeiss Meditec Ag | Ophthalmological device and method for observation, examination, diagnosis and / or therapy of an eye |
| CN102188231A (en) * | 2011-05-23 | 2011-09-21 | 中国科学院光电技术研究所 | A Zoom Multi-channel Human Eye Retina Microscopic Imaging System |
| CN102283633A (en) * | 2011-07-19 | 2011-12-21 | 中国科学院光电技术研究所 | An Adaptive Optics Micro Perimeter |
| CN103393401A (en) * | 2013-08-06 | 2013-11-20 | 中国科学院光电技术研究所 | Double wavefront corrector living body human eye retina high-resolution imaging system |
| CN207613785U (en) * | 2017-04-24 | 2018-07-17 | 北京新创恒远科技发展有限公司 | A kind of fundus imaging device based on mobile device |
| CN107584207A (en) * | 2017-10-25 | 2018-01-16 | 广州镭码标识设备有限公司 | Laser marker and its light modulating device |
| CN108535932A (en) * | 2018-05-30 | 2018-09-14 | 中国工程物理研究院激光聚变研究中心 | The debugging apparatus and adjustment method of a kind of nearly far field light path simultaneously |
| CN209518854U (en) * | 2018-12-28 | 2019-10-22 | 中山联合光电科技股份有限公司 | A kind of new structure of fundus imaging camera lens |
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| Publication number | Publication date |
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| CN109431459A (en) | 2019-03-08 |
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