CN104473613A - Endoscope optical system and manufacture device and method thereof - Google Patents
Endoscope optical system and manufacture device and method thereof Download PDFInfo
- Publication number
- CN104473613A CN104473613A CN201410745487.6A CN201410745487A CN104473613A CN 104473613 A CN104473613 A CN 104473613A CN 201410745487 A CN201410745487 A CN 201410745487A CN 104473613 A CN104473613 A CN 104473613A
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- Prior art keywords
- optical fiber
- flange
- camera lens
- plastic optical
- face
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/0011—Manufacturing of endoscope parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00131—Accessories for endoscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0676—Endoscope light sources at distal tip of an endoscope
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C45/14221—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14549—Coating rod-like, wire-like or belt-like articles
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Radiology & Medical Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Endoscopes (AREA)
Abstract
The invention provides an endoscope optical system comprising a plastic optical fiber and an entire lens formed by resin molding. One end of the plastic fiber is coaxial to the lens and extends into the rear end of the lens integrally, and the end surface of the plastic optical fiber extending into the lens is perpendicular to the optical axis of the lens. The invention further provides a manufacture device of the endoscope optical system; a flange is fixed to the plastic optical fiber out of the end surface of the flange; a lens die is connected to the end surface of the flange, the end surface of the flange seals the die cavity, used for forming the lens by resin molding, of the lens die, the plastic optical fiber coaxial to the die cavity extends into the rear end of the die cavity, and the wall of the die cavity corresponding to the plastic optical fiber extending into the die cavity radially is provided with an injection port for resin injection. A manufacture method of the endoscope optical system includes using the manufacture device, and connecting the lens die to the end surface of the flange with the fixed plastic optical fiber; after injecting the resin into the die cavity through the injection port, cooling and forming, and removing the flange and the lens die.
Description
Technical field
The present invention relates to the optical system of endoscope, the optical system of especially cheap endoscope and preparation facilities thereof and method.
Background technology
Endoscope is indispensable instrument in the treatment of disease early diagnosis, the Reusability such as to be carried out disinfection by various mode from present situation because endoscope self price is high, therefore.In order to the prevention of avoiding infection of 100%, careful cleaning and sterilization etc. also become indispensable part, must be equipped with the medical apparatus and instruments such as endoscope cleaning instrument for this reason.On-the-spot in medical treatment, although by suitable regulation implement sterilization operation, present situation to carry out sterilizing completely.
Therefore, because the handling implement sterilization of endoscope is insufficient, the case of infection is caused also to have report by blood, saliva, the content of digestive organs extraction, the attachment etc. of tissue.
From present situation, a lot of medical apparatus such as scalpel, syringe, in order to ensure safety, is just directly thrown away after using.But, see Fig. 1, the optical fibers 1 must made with superfine imaging quartz glass due to endoscope with load in lens barrel 2, have multiple eyeglass 3 through grinding in lens barrel 2, and the end face 11 of optical fibers 1 grinds with special abrasive working appts.The manufacturing cost of this optical system not only optical element is high, assembling also needs very high technology, therefore have the ability to manufacture the production firm of endoscope is limited and manufacturing cost is very high, so endoscope's price is very high, thus hospital has to, and to carry out Reusability be exactly present truth to endoscope.
In view of this situation, in order to ensure the nonrecoverable high health of endoscope, reliability and safety, just must seek the exploitation of the endoscope optical system of low cost.
Summary of the invention
The object of this technology is to provide a kind of endoscope optical system of low cost.
The endoscope optical system of this technology, the overall camera lens that it comprises plastic optical fiber and is formed with resin injection moulding, one end of plastic optical fiber is coaxial and stretch into the rear end of camera lens and form one with camera lens with described camera lens, and the end face stretching into the plastic optical fiber one end in camera lens is vertical with camera lens optical axis.
Above-mentioned low cost endoscope optical system, described resin is silicones.The resin of acrylic resin, Merlon or cyclenes system class is used in general molded lenses, but the micro structure of these resins is transcribable may not be abundant, do not possess and biocompatible and zygosity, generally believe and use such a ordinary resin to be very difficult to manufacture the small-sized one-body molded property eyeglass of endoscope-use yet.Silicones is very well transcribable due to the low thus micro structure of viscosity, is suitable for manufacturing micro parts relative to common resin, and silicones and biocompatible and zygosity fine.
Above-mentioned endoscope optical system, described plastic optical fiber is simultaneously as lighting fiber and imaging fibre (illumination and imaging use same optical fiber), and optical fiber end arranges the divided beams device that illumination path and imaging optical path are separated.Endoscope's number of fibers common in a lot of situation is abundant, independently can have lighting fiber.Therefore the degree of freedom that lighting condition is relative is higher.But in order to reduce costs further, the quantity of the optical fiber in this patent is limited, be thus difficult to guarantee the special optical fiber that throws light on.So illuminator described in this patent and imaging system must pass through coaxial optical fiber, and optical fiber end arranges the divided beams device that illumination path and imaging optical path are separated.Illumination light can not enter in imaging optical path, therefore can not affect image contrast.
Above-mentioned endoscope optical system, its reflective illuminator in asymmetrical beam hurdle also for throwing light on to optical fiber.In order to ensure the function of endoscope, the optical system of dirty survey is necessary.Built-in reflective formula illuminator in downstream side optical system, in reflective illuminator, arrange asymmetrical beam hurdle can change illumination condition, plays great role to the improvement of visibility.
This technology does not re-use traditional grind spectacle lens, but adopts the overall camera lens formed with resin injection moulding; This technology does not re-use the optical fibers that quartz glass is made yet simultaneously, but adopts plastic optical fiber to carry out throwing light on and transmission information.These all greatly reduce the cost of low cost endoscope optical system, make the single use of endoscope become possibility.
This technology provides the preparation facilities of a kind of structure endoscope optical system simple, easy to use simultaneously, and the endoscope optical system cost prepared with this preparation facilities is low, and can ensure its quality.
The preparation facilities of the endoscope optical system described in this technology, flange fixedly exceeds the plastic optical fiber of end face of flange; Camera lens mould is connected with end face of flange, end face of flange is cavity closed camera lens mould being formed camera lens for resin by injection, the plastic optical fiber coaxial with die cavity stretches into die cavity rear end, with stretch in die cavity cast gate plastic optical fiber die cavity wall diametrically had for resin injection.
The preparation facilities of above-mentioned endoscope optical system, cast gate has multiple, plastic optical fiber axisymmetrical.
The beneficial effect of the preparation facilities of the endoscope optical system described in this technology: fixed plastics fiber on flange, serves positioning action to plastic optical fibre, prevents the movement of plastic optical fibre.In this preparation facilities, cast gate is opened with in plastic optical fiber die cavity wall diametrically, and like this, the rising head on moulding (overall camera lens) will be looped around the surrounding of plastic optical fiber, when causing moulding surface to have a damage when remove feeders, can not the image quality of camera lens impact.
This technology additionally provides a kind of simple to operate, and can ensure the preparation method of the endoscope optical system of the endoscope optical system quality prepared.
The preparation method of the endoscope optical system of this technology, uses above-mentioned preparation facilities, and camera lens mould is connected with the end face of flange being fixed with plastic optical fiber; After resin is injected die cavity from cast gate, cooling forming, removes flange and camera lens mould.
The preparation method of above-mentioned endoscope optical system, had the following steps before camera lens mould is connected with the end face of flange being fixed with plastic optical fiber: fixing head is contacted with end face of flange and fixes, the plastic optical fiber exceeding end face of flange extend in the hole equal with plastic optical fiber external diameter that fixing head leaves, then the end face of fixing head is cut, the end face of plastic optical fiber is also cut.
The beneficial effect of the preparation method of the endoscope optical system described in this technology: the optical fiber of conventional imaging generally uses quartz glass etc. to manufacture, its end face grinds with special abrasive working appts.But in this patent, be the plastic optical fiber of the material making of plastic series because of optical fiber communication, lapping mode processing in the past can not be adapted to.Therefore, this technology have employed the end face that special ultraprecise processing method carrys out processing plastic optical fiber, namely prior wait with the fixing head fixing with flange locate, fixed plastics optical fiber, then the end face of fixing head is cut, make the end face of the plastic optical fiber under the state be fixed also by precision cutting, improve the fineness of plastic optical fiber end face, and working (machining) efficiency is high.
Accompanying drawing explanation
Fig. 1 is existing endoscope optical system schematic diagram;
Fig. 2 is the endoscope optical system schematic diagram of this technology;
Fig. 3 is illumination for endoscope and imaging optical path figure;
Fig. 4 is the preparation facilities schematic diagram of endoscope optical system;
Fig. 5 is fixing head with end face not by schematic diagram that the flange etc. of milling is connected;
Fig. 6 is the schematic diagram that fixing head is connected by the flange etc. after milling with end face;
Fig. 7 is the preparation facilities schematic diagram of the endoscope optical system after injection moulding.
Detailed description of the invention
Embodiment 1: endoscope optical system
Endoscope optical system shown in Figure 2, the overall camera lens 2 that it comprises plastic optical fiber 1 and is formed with resin injection moulding, the left end of plastic optical fiber is coaxial and stretch into the rear end of camera lens and form one with camera lens with described camera lens, and the end face 11 stretching into the plastic optical fiber left end in camera lens is vertical with camera lens optical axis.
Shown resin can be poly-alkyl organic resin (as poly-methyl silicon resin, poly-ethyl silicones), poly-aryl organic siliconresin or polyoxyethylene alkyl aryl base organic siliconresin (as polymethyl-benzene base organic siliconresin, polyphenylethyl base organic siliconresin).Plastic optical fiber (POF) is if polystyrene (PS), polymethyl methacrylate (PMMA) or Merlon (PC) are as core material by high transparency polymer, PMMA or fluoroplastics etc., as a type optical fiber (optical fibers) of cortical material, belong to prior art.
In the downstream side optical system of optical fiber connector, built-in reflective formula illuminator 7, throws light on same path with imaging optical fiber.Asymmetrical beam hurdle is set in reflective illuminator and can changes illumination condition, great role is played to the improvement of visibility.See Fig. 3, the light that reflective illuminator 7 sends enters optical fiber through divided beams device 9, penetrate illumination subject 8 through overall camera lens 2 again, the light that subject 8 reflects through the imaging of overall camera lens 2 laggard enter optical fiber, then arrive photo-sensitive cell 10 through divided beams device 9.
Embodiment 2: the preparation facilities of endoscope optical system
The preparation facilities of endoscope optical system shown in Figure 4, flange 3 fixedly exceeds the plastic optical fiber 1 of end face of flange; Camera lens mould 5 is connected with end face of flange 31, end face of flange is closed for the die cavity 51 of resin by injection formation camera lens on camera lens mould 5, the plastic optical fiber 1 coaxial with die cavity stretches into die cavity rear end, plastic optical fiber die cavity wall diametrically having two cast gates 52 for resin injections with stretching in die cavity.Two cast gates are with plastic optical fiber axisymmetrical.
Embodiment 3: the preparation method of endoscope optical system
Adopt the preparation facilities described in embodiment 2.First plastic optical fiber 1 is fixed on the center of flange 3, see Fig. 5, the plastic optical fiber exceeding end face of flange extend in the hole 61 equal with plastic optical fiber external diameter that fixing head 6 leaves, fixing head 6 is contacted with end face of flange 31 and fixes, then carry out milling with the end face 62 of milling machine to fixing head, certainly, the end face of plastic optical fiber is also by milling, see Fig. 6, then pull down fixing head.The flange 3 being fixed with plastic optical fiber 1 is fixedly linked with camera lens mould 5, see Fig. 7, end face of flange 31 closes die cavity 51, and plastic optical fiber 1 stretches into die cavity 51 rear end again.After silicones is injected die cavity from cast gate, cooling forming forms overall camera lens 2.Remove flange 3 and camera lens mould 5 again, obtaining the overall camera lens 2 with plastic optical fiber shape all-in-one-piece, then removing the rising head 4 because watering interruption-forming.
Claims (8)
1. endoscope optical system, it is characterized in that: the overall camera lens that it comprises plastic optical fiber and is formed with resin injection moulding, one end of plastic optical fiber is coaxial and stretch into the rear end of camera lens and form one with camera lens with described camera lens, and the end face stretching into the plastic optical fiber one end in camera lens is vertical with camera lens optical axis.
2. endoscope optical system as claimed in claim 1, is characterized in that: described resin is silicones.
3. endoscope optical system as claimed in claim 1, is characterized in that: described plastic optical fiber is simultaneously as lighting fiber and imaging fibre, and optical fiber end arranges the divided beams device that illumination path and imaging optical path are separated.
4. endoscope optical system as claimed in claim 1, is characterized in that: its reflective illuminator in asymmetrical beam hurdle also for throwing light on to optical fiber.
5. the preparation facilities of endoscope optical system according to claim 1, is characterized in that: plastic optical fiber flange fixedly exceeding end face of flange; Camera lens mould is connected with end face of flange, end face of flange is cavity closed camera lens mould being formed camera lens for resin by injection, the plastic optical fiber coaxial with die cavity stretches into die cavity rear end, with stretch in die cavity cast gate plastic optical fiber die cavity wall diametrically had for resin injection.
6. the preparation facilities of endoscope optical system as claimed in claim 5, is characterized in that: cast gate has multiple, plastic optical fiber axisymmetrical.
7. the preparation method of endoscope optical system according to claim 1, is characterized in that: use the preparation facilities described in claim 3,4, camera lens mould is connected with the end face of flange being fixed with plastic optical fiber; After resin is injected die cavity from cast gate, cooling forming, removes flange and camera lens mould.
8. the preparation method of endoscope optical system as claimed in claim 7, it is characterized in that: had the following steps before camera lens mould is connected with the end face of flange being fixed with plastic optical fiber: fixing head is contacted with end face of flange and fixes, the plastic optical fiber exceeding end face of flange extend in the hole equal with plastic optical fiber external diameter that fixing head leaves, then the end face of fixing head is cut, the end face of plastic optical fiber is also cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745487.6A CN104473613B (en) | 2014-12-09 | 2014-12-09 | Endoscope optical system and preparation facilities, preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410745487.6A CN104473613B (en) | 2014-12-09 | 2014-12-09 | Endoscope optical system and preparation facilities, preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104473613A true CN104473613A (en) | 2015-04-01 |
| CN104473613B CN104473613B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410745487.6A Active CN104473613B (en) | 2014-12-09 | 2014-12-09 | Endoscope optical system and preparation facilities, preparation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167419A (en) * | 2016-12-27 | 2019-08-23 | 德普伊新特斯产品公司 | For providing system, the method and apparatus of illumination in endoscope imaging circumstances |
| CN110604532A (en) * | 2018-06-15 | 2019-12-24 | 圻逸科技股份有限公司 | Manufacturing method of endoscope plastic lens and finished product thereof |
| CN114271774A (en) * | 2022-01-11 | 2022-04-05 | 上海宇度医学科技股份有限公司 | Manufacturing method of hysteroscope head end channel |
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| CN204293119U (en) * | 2014-12-09 | 2015-04-29 | 南京东利来光电实业有限责任公司 | Endoscope optical system and preparation facilities thereof |
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2014
- 2014-12-09 CN CN201410745487.6A patent/CN104473613B/en active Active
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| JPH09108174A (en) * | 1995-10-17 | 1997-04-28 | Olympus Optical Co Ltd | Optical component |
| JP2002160258A (en) * | 2001-11-08 | 2002-06-04 | Olympus Optical Co Ltd | Optical component |
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| US20100253949A1 (en) * | 2007-11-12 | 2010-10-07 | Lightlab Imaging, Inc. | Miniature Optical Elements for Fiber-Optic Beam Shaping |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167419A (en) * | 2016-12-27 | 2019-08-23 | 德普伊新特斯产品公司 | For providing system, the method and apparatus of illumination in endoscope imaging circumstances |
| CN110604532A (en) * | 2018-06-15 | 2019-12-24 | 圻逸科技股份有限公司 | Manufacturing method of endoscope plastic lens and finished product thereof |
| CN114271774A (en) * | 2022-01-11 | 2022-04-05 | 上海宇度医学科技股份有限公司 | Manufacturing method of hysteroscope head end channel |
| CN114271774B (en) * | 2022-01-11 | 2024-06-07 | 上海宇度医学科技股份有限公司 | Manufacturing method of uterine cavity lens end channel |
Also Published As
| Publication number | Publication date |
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| CN104473613B (en) | 2016-04-27 |
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Denomination of invention: Endoscope optical system and manufacture device and method thereof Effective date of registration: 20180815 Granted publication date: 20160427 Pledgee: Bank of Nanjing, Limited by Share Ltd, Nanjing branch Pledgor: Nanjing Donglilai Photoelectric Industrial Co., Ltd. Registration number: 2018320000135 |
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Date of cancellation: 20200805 Granted publication date: 20160427 Pledgee: Bank of Nanjing Limited by Share Ltd. Nanjing branch Pledgor: DOMILIGHT OPTICS & ELECTRONICS ENTERPRISE Co.,Ltd. Registration number: 2018320000135 |