CN102334976A - Lighting device of digital camera of imaging system for infant eye ground - Google Patents
Lighting device of digital camera of imaging system for infant eye ground Download PDFInfo
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- CN102334976A CN102334976A CN2011101868319A CN201110186831A CN102334976A CN 102334976 A CN102334976 A CN 102334976A CN 2011101868319 A CN2011101868319 A CN 2011101868319A CN 201110186831 A CN201110186831 A CN 201110186831A CN 102334976 A CN102334976 A CN 102334976A
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Abstract
The invention discloses a lighting device of a digital camera of an imaging system for infant eye ground, which is especially used for shooting retinas of eye grounds of a premature infant and an infant. The lighting device comprises an inner sleeve, an outer sleeve, a plurality of light-guide fibres and at least one light source assembly, wherein the inner sleeve is sleeved in the outer sleeve, one ends of the light-guide fibres are densely arranged in the periphery of a gap formed between the inner sleeve and the outer sleeve and fixed by using filling silica gel, and the other ends of the light-guide fibres are abutted against with the light source assembly for realizing light conduction. The lighting device disclosed by the invention can be used for directly reflecting the light source to the front end of a lens of the digital camera, and has the characteristics of simple and compact structure, large photometric brightness, uniform light rays, clear imaging, safety, sanitation and the like.
Description
[technical field]
The present invention relates to a kind of medical examination apparatus, relevant with a kind of digital image-forming equipment that is used for examination of ocular fundus, refer to a kind of illuminator of taking digital camera in premature infant, the infant optical fundus retina imaging system that is specifically designed to especially.
[background technology]
Retinopathy of prematurity also is the blind one of the main reasons of the child of developed country eyes.Along with the progress of Chinese economic development, society, thisly demonstrated the trend of obvious rising in China in the common disease of developed country, China's Ministry of Public Health was issued " premature infant treats with oxygen and retinopathy guideline of prevention and treatment " in 2004 for this reason; Stress premature infant, low birthweight infant in hospital's production; The oxygen uptake history is particularly arranged, all must carry out examination of ocular fundus, with the early discovery retinopathy of prematurity; The early treatment reduces premature infant's blinding and disability rate.Analysis, China is because this disease causes rare 2～30,000 children every year and receives blind threat, and the case of generation inpairment of vision is countless.Cause such result's appearance, except the particularity of this disease itself, most important reason is that China lacks at present the diagnostic device that this disease is effectively checked, has caused that most of patient fails to pinpoint a disease in diagnosis, mistaken diagnosis, has lost best therapy apparatus meeting.
China premature infant, neonate examination of ocular fundus at present mainly is that the doctor passes through traditional direct ophthalmoscope or indirect ophthalmoscopy patient's optical fundus with eyes; The operation more complicated; The bad grasp of examination scope; Add that premature infant, neonate can not cooperate, so premature infant's examination of ocular fundus is compared with traditional direct or indirect ophthalmofundoscopy and advanced eyeground imaging system; Not only technology falls far short; The inspection operation is also relatively more difficult; Its result is influenced by subjective factors very also easily, and can only carry out writing record with examiner's subjective description, does not have objective image check result to supply to read or the consultation of doctors; Be easy to fail to pinpoint a disease in diagnosis and mistaken diagnosis, also be difficult to objective information filing management.
At present retinopathy of prematurity checks that science is an application Radix Rumicis high definition optical fundus digital imaging system with effective method; This system not only can carry out the premature infant, the infant optical fundus is comprehensive takes pictures, records a video; In time find position, character, the degree of pathological changes; For the clinician provides the objective basis of diagnosis, treatment, and the image of taking can be read, the consultation of doctors, teaching, information filing, sets up case retrieval etc.This inspection is non-invasion property, atraumatic.Such solution has met that modern medicine is accurate, objective to check result, the requirement of safety, science.This be traditional direct ophthalmoscope and indirectly between ophthalmoscope can't accomplish.Radix Rumicis high definition optical fundus digital imaging system is mainly by Radix Rumicis high definition optical fundus digital camera, middle control computer, systems soft ware, and the compositions such as optical fundus digital camera illuminator that are complementary.Because the particularity of eyeball structure; Radix Rumicis high definition optical fundus digital camera has special requirement to the illumination of taking: the angle of illumination must with shooting angle one to or greater than shooting angle; Reflected light and other veiling glares can not occur, brightness must be adjusted to and meet photographing request, and illumination and camera lens connect must be accurate; The diameter of the two will be controlled at 8mm with interior etc., and these factors become the technical difficult problem that restriction Radix Rumicis high definition optical fundus digital imaging system is used always.
The patent of Chinese in addition Granted publication CN201840465U discloses a kind of forward type annular illumination system with digital camera lens; Include sleeve; Be provided with annular LGP at the sleeve head end, be provided with light-emitting device, be provided with built-in optical fiber at sleeve lining at telescopic tail end; One end light of built-in optical fiber is connected to annular LGP end; The other end light of built-in optical fiber is connected on the light-emitting device, and light-emitting device includes cold light source and the light that cold light source sends is transmitted to the external optical fiber of built-in optical fiber, and external optical fiber is connected with built-in fiber optic, light.Design not only complex structure like this, assembly difficulty is big, and optical fiber is not firm at the sleeve internal fixation, becomes flexible easily, fractures even come off; And the light source of fiber optic conduction scatters out after will passing through LGP, will certainly cause the loss of light, to such an extent as to it is inhomogeneous to arrive the light on optical fundus, the dark space can appear in the part, influences imaging effect.
[summary of the invention]
In order to overcome light source causes light source in conducting indirectly loss and decay; To such an extent as to it is inhomogeneous to arrive the light on optical fundus; The dark space can appear in the part, influences imaging effect and complex structure, deficiency that assembly difficulty is big, the object of the present invention is to provide a kind of illuminator of infant eyeground imaging system digital camera; It is not only simple in structure, compact, and can be directly with the illuminator of source reflection to digital camera camera lens front end.
The objective of the invention is to realize like this; Design the illuminator that a kind of door is used to take premature infant, infant optical fundus retina imaging system digital camera; This illuminator comprises inner sleeve, outer sleeve, some optical fiberss and at least one light source assembly; Wherein inner sleeve is set in the outer sleeve; Interior also filling gel was fixed around optical fibers one end was clouded in the gap that forms between the inner and outer sleeves, and optical fibers other end fasciculation docks with light source assembly in order to realize the conduction of light.
In order better to understand goal of the invention, the present invention also further has:
Described inner sleeve and outer sleeve are conical sleeve, and the gap is filled in that the silica gel in the gap is medical silica-gel between the inside and outside sleeve around forming between inner sleeve and the outer sleeve between 0.1mm～1mm.Wherein single optical fibers diameter is 30-50 μ, and quantity is no less than 1000.
Described light source assembly is provided with in order to regulate the actuator of light-source brightness, also is equipped with some in order to change the filter of light wave in addition at the light source assembly front end.Wherein the light source of light source assembly transmission is a Medical Cold Light Source.
Illuminator of the present invention mainly is made up of with relevant accessory light source assembly, optical fibers and inner and outer sleeves; Thisly be clouded in the gap that forms between the inner and outer sleeves by some tiny optical fibers one ends; Adopt to fill and solidify with medical silica-gel; Thereby formed forward type ring light corral around digital camera optical lens front end, optical fibers front end and device slitless connection and polishing smooth around first piece of optical lens of inner sleeve front end.Form an optical fibre ring bundle at the camera lens periphery, the size of inside and outside sleeve, length and angle can decide according to the size and the angle of digital camera.
The operation principle of illuminator of the present invention: the Medical Cold Light Source of light source assembly emission is a visible light; Form pencil and dock through being no less than 1000 optical fibers rear ends with it; Cold light source is conducted to the optical fibre ring bundle of optical fibers front end with the form of total reflection, go out through the optical fibre ring beam again, because the ejaculation angle of optical fiber is different; Form an effective hot spot, thereby with the omnibearing first piece of camera lens scope in the place ahead that be covered in of light.According to the requirement of photo environment, can regulate brightness of illumination through the actuator of light source assembly.The selection of the light wave of different wave length can realize through the filter that is placed in the light source assembly front end.Around the present invention is directly transferred to digital camera optical lens front end with light source from light source assembly through fibre-optic total reflection mechanism; Avoided the loss of light to greatest extent; Its illumination range is greater than the imaging scope; Because the reflected light that light source without the optical glass of imaging optical path, has avoided optical glass to produce makes its brightness even; The light source assembly actuator can satisfy the lighting requirement of the clear optical fundus of Radix Rumicis digital camera fully according to the needed brightness of the different adjustment of environment for use in addition.
Have following characteristics owing to adopted technique scheme, illuminator prior art of the present invention to compare:
1, practical: illuminator volume of the present invention is little, easy to use, and optical lens can be installed in the fibre bundle easily, compares the paraxonic illumination and reduces very big space.
2, brightness is big: illuminator of the present invention, its light source transmit and have adopted the optical fiber mode of going directly, and the brightness of throwing light on is guaranteed in the loss of the light of having avoided taking place in the indirect transport process; Owing to light modulating device is arranged, can regulate the brightness of light according to actual needs.
3, light is even: according to actual needs, select the different fibers orientation angle during laying optical fiber, it is even to reach light, local dark space can not occur.
4, imaging is clear: in use light sees through aqueous humor, crystalline lens and vitreous body through producing certain refraction behind the cornea, is projected on equably on the retina, covers the imaging scope, and illuminating effect is near coaxial light source.Owing to be non-coaxial light source, the flare of having avoided the coaxial light source optical glass to produce is fully guaranteed the fundus imaging quality.
5, safety and sanitation: used bonding its end of optical fiber of solidifying of medical silica-gel to polish smooth, convenient for cleaning and general chemical agent sterilization, safety and sanitation.
[description of drawings]
Fig. 1 is the vertical section structure sketch map of the embodiment of the invention;
Fig. 2 is that inner sleeve of the present invention is set in the perspective view in the outer sleeve;
[specific embodiment]
Below in conjunction with the accompanying drawing and the specific embodiment native system is described in further detail:
With reference to figure 1 and Fig. 2; The present invention is a kind of illuminator of taking premature infant, infant optical fundus retina imaging system digital camera that is specifically designed to; This illuminator comprises that inner sleeve 2, outer sleeve 1, optical fibers 3 reach to light source assembly 4; The present invention in an embodiment; Inner sleeve 2, outer sleeve 1 are designed to two conical sleeves that vary in size, and according to the needs of the quantity design of the requirement of light-source brightness and optical fibers 3, the about 0.2～0.3mm of wall thickness of its inner sleeve 2, outer sleeve 1 is good; The small sleeve front inner diameter is that 3.5～6.5mm is good; The big big 4.0～7.0mm of sleeve is good, and inner sleeve 2 is set in the gap of the latter two formation in the outer sleeve 1 or 8 is that 0.3～6.0mm is good at interval, and holds handle 7 with the interior handss that are provided with many group optical glasss and is connected and fixes; Optical fibers 3 one ends hold that handle 7 medial walls arrive two sleeves, 1,2 formed gaps or at interval in 8 and in around being clouded in along hands; It is fixing after reserving optical fibers 3 directions, to adopt the perfusion medical silica-gel to solidify optical fibers 3, forms an optical fibre ring bundle at last, optical fibers 3 front ends and device slitless connection and polishing smooth around first piece of optical lens 6 of inner sleeve 2 front ends.Certain telescopic size, length and angle can decide according to the size and the angle of digital camera lens.
The pencil of forming optical fibers 3 other ends adopts a sleeve 5 that it is sheathed fixing, docks with the light emitted mouth of light source assembly 4 in its end, in order to realize the conduction of light; And form a complete optical fiber illuminating system.
In order to reach better illuminance, reduce the loss of light, optical fibers 3 is selected glass optical fiber for use in an embodiment, and it is good that diameter is selected 30-50 μ for use, and optical fibers 3 total amounts are advisable at 3000 or 4000.According under the wiring and the insufficient situation of energy of light source of optical fibers 3 in conical sleeve, can solve in addition through installing a plurality of light source assemblies 4 additional.
The Medical Cold Light Source that the light source assembly 4 of illuminator of the present invention is produced conducts to its form with total reflection through optical fibers 3 the ring optical fiber bundle of optical fibers 3 front ends; Go out through the ring optical fiber beam again; Because the difference of the ejaculation angle of fibre-optic bundle; Form an effective hot spot, thereby with omnibearing first piece of optical lens 6 scope in the place ahead that are covered in of light.According to the requirement of photo environment, can regulate brightness of illumination through the actuator of light source assembly 4.The selection of the light wave of different wave length can realize through the filter that is placed in light source assembly 4 front ends.Around the total reflection mechanism of the present invention through optical fibers 3 is directly transferred to first piece of optical lens 6 front end of digital camera with Medical Cold Light Source from light source assembly 4; Avoided the loss of light to greatest extent; Its illumination range is greater than the imaging scope; Because Medical Cold Light Source has been avoided catoptrical generation without the optical glass of imaging optical path, makes its brightness even; Light source assembly 4 actuators can satisfy the lighting requirement of the clear optical fundus of Radix Rumicis digital camera fully according to the needed brightness of the different adjustment of environment for use in addition.
More than to the illuminator of a kind of infant eyeground imaging system digital camera provided by the present invention; And introduce, to have used concrete embodiment among this paper the present invention has been set forth, the explanation of above embodiment is just in order to help to understand core concept of the present invention; For one of ordinary skill in the art; According to thought of the present invention, the part that on the specific embodiment and range of application, all can change, this description should not be construed as limitation of the present invention in sum.
Claims (7)
1. the illuminator of an infant eyeground imaging system digital camera; Comprise inner sleeve, outer sleeve, some optical fiberss and at least one light source assembly; It is characterized in that: described inner sleeve is set in the outer sleeve; Interior also filling gel was fixed around described optical fibers one end was clouded in the gap that forms between the inner and outer sleeves, and described optical fibers other end fasciculation docks with light source assembly in order to realize the conduction of light.
2. the illuminator of infant eyeground imaging system digital camera according to claim 1 is characterized in that: the gap is between 0.1mm～1mm around forming between described inner sleeve and the outer sleeve.
3. the illuminator of infant eyeground imaging system digital camera according to claim 1 and 2 is characterized in that: described inner sleeve and outer sleeve are conical sleeve, are filled in that the silica gel in the gap is medical silica-gel between the two.
4. the illuminator of infant eyeground imaging system digital camera according to claim 1 is characterized in that: described optical fibers diameter is 30-50 μ, and quantity is no less than 1000.
5. the illuminator of infant eyeground imaging system digital camera according to claim 1 is characterized in that: described light source assembly is provided with in order to regulate the actuator of light-source brightness.
6. the illuminator of infant eyeground imaging system digital camera according to claim 1 is characterized in that: described light source assembly front end also is equipped with some in order to change the filter of light wave.
7. the illuminator of infant eyeground imaging system digital camera according to claim 1 is characterized in that: the light source of described light source assembly emission is a Medical Cold Light Source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101868319A CN102334976A (en) | 2011-07-05 | 2011-07-05 | Lighting device of digital camera of imaging system for infant eye ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101868319A CN102334976A (en) | 2011-07-05 | 2011-07-05 | Lighting device of digital camera of imaging system for infant eye ground |
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| Publication Number | Publication Date |
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| CN102334976A true CN102334976A (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101868319A Pending CN102334976A (en) | 2011-07-05 | 2011-07-05 | Lighting device of digital camera of imaging system for infant eye ground |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9814385B2 (en) | 2013-05-07 | 2017-11-14 | London School Of Hygiene And Tropical Medicine | Ophthalmoscope |
| CN107468208A (en) * | 2017-09-10 | 2017-12-15 | 广州市视加医疗仪器设备有限公司 | A kind of special imaging system of portable eye diagnosis |
| CN109740540A (en) * | 2019-01-04 | 2019-05-10 | 北京七鑫易维信息技术有限公司 | Light-guiding type eyeball tracking equipment, eyeball tracking method and headset equipment |
| CN115342912A (en) * | 2021-05-14 | 2022-11-15 | 华中科技大学 | Digital camera-based accurate light brightness measuring device and detection method |
Citations (5)
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| CN1101249A (en) * | 1994-06-24 | 1995-04-12 | 中国科学院上海技术物理研究所 | Real time collecting for eyeground picture and processing method and its apparatus |
| CN2662267Y (en) * | 2003-08-28 | 2004-12-08 | 南京春辉科技实业有限公司 | Multi-ring shaped optical fibre illuminator |
| CN2676828Y (en) * | 2003-09-02 | 2005-02-09 | 南京春辉科技实业有限公司 | Optical fiber illuminating iris image gathering derice |
| CN201814611U (en) * | 2009-10-26 | 2011-05-04 | 北京中法派尔特医疗设备有限公司 | Anorectal operation instrument and anal dilation device |
| CN202211674U (en) * | 2011-07-05 | 2012-05-09 | 黄立平 | Lighting device for digital camera of fundus imaging system for infants |
-
2011
- 2011-07-05 CN CN2011101868319A patent/CN102334976A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1101249A (en) * | 1994-06-24 | 1995-04-12 | 中国科学院上海技术物理研究所 | Real time collecting for eyeground picture and processing method and its apparatus |
| CN2662267Y (en) * | 2003-08-28 | 2004-12-08 | 南京春辉科技实业有限公司 | Multi-ring shaped optical fibre illuminator |
| CN2676828Y (en) * | 2003-09-02 | 2005-02-09 | 南京春辉科技实业有限公司 | Optical fiber illuminating iris image gathering derice |
| CN201814611U (en) * | 2009-10-26 | 2011-05-04 | 北京中法派尔特医疗设备有限公司 | Anorectal operation instrument and anal dilation device |
| CN202211674U (en) * | 2011-07-05 | 2012-05-09 | 黄立平 | Lighting device for digital camera of fundus imaging system for infants |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9814385B2 (en) | 2013-05-07 | 2017-11-14 | London School Of Hygiene And Tropical Medicine | Ophthalmoscope |
| CN107468208A (en) * | 2017-09-10 | 2017-12-15 | 广州市视加医疗仪器设备有限公司 | A kind of special imaging system of portable eye diagnosis |
| CN107468208B (en) * | 2017-09-10 | 2024-02-20 | 广州市视加医疗仪器设备有限公司 | Portable special imaging system for eye diagnosis |
| CN109740540A (en) * | 2019-01-04 | 2019-05-10 | 北京七鑫易维信息技术有限公司 | Light-guiding type eyeball tracking equipment, eyeball tracking method and headset equipment |
| CN115342912A (en) * | 2021-05-14 | 2022-11-15 | 华中科技大学 | Digital camera-based accurate light brightness measuring device and detection method |
| CN115342912B (en) * | 2021-05-14 | 2024-07-02 | 华中科技大学 | Precise brightness measuring device and method based on digital camera |
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Application publication date: 20120201 |