CN201840465U - Front ring-shaped illuminating system with digital lens for fundus examination - Google Patents
Front ring-shaped illuminating system with digital lens for fundus examination Download PDFInfo
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- CN201840465U CN201840465U CN201020555280XU CN201020555280U CN201840465U CN 201840465 U CN201840465 U CN 201840465U CN 201020555280X U CN201020555280X U CN 201020555280XU CN 201020555280 U CN201020555280 U CN 201020555280U CN 201840465 U CN201840465 U CN 201840465U
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Abstract
The utility model discloses a front ring-shaped illuminating system with a digital lens for fundus examination, which comprises a sleeve. The head end of the sleeve is provided with a ring-shaped light guide plate. The tail end of the sleeve is provided with a light emitting device. The inner wall of the sleeve is provided with a built-in optical fiber. One end of the built-in optical fiber is optically connected to the end part of the ring-shaped light guide plate. The other end of the built-in optical fiber is optically connected onto the light emitting device. The light emitting device comprises a cold light source and an external optical fiber for conducting light emitted by the cold light source to the built-in optical fiber. The external optical fiber is optically connected with the built-in optical fiber. The utility model provides the front ring-shaped illuminating system with the digital lens for fundus examination.
Description
[technical field]
The present invention relates to a kind of optical system, is a novel medical examination apparatus, is mainly used in the optical system of taking premature infant, infant optical fundus.
[background technology]
Retinopathy of prematurity is the blind main causes of the child of developed country eyes.Progress along with Chinese economic development, society, this trend that has presented obvious rising in the common disease of developed country in China, 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, emphasize 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 of this disease, and it is blind to cause rare 2～30,000 children every year, and the case of generation inpairment of vision is countless.Cause occurring such result, except the particularity of this disease itself, most important reason is that present China lacks the most effective inspection of this disease and diagnostic device, has caused that most of patient fails to pinpoint a disease in diagnosis, mistaken diagnosis, has lost the chance of treatment.Premature infant, infant are owing to its own particularity, and common adult's fundus photography equipment can not be suitable for.
At present, China premature infant, infant examination of ocular fundus mainly are that the doctor passes through traditional direct ophthalmoscope or indirect ophthalmoscopy patient's optical fundus with eyes, complicated operation, the bad grasp of examination scope, add that premature infant, infant can not cooperate, caused and checked difficulty, its result is influenced by subjective factors very also easily simultaneously, and can only carry out writing record with examiner's subjective description, there is not objective image inspection record, can not carry out the reading image 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 and effective method are to use Radix Rumicis high definition optical fundus digital imaging system, 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, the objective basis of diagnosis, treatment is provided for the clinician, 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, atraumatic.Such solution has met that modern medicine is accurate, objective to check result, safety, science requirement.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 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 appear, brightness must be adjusted to and meet photographing request, illumination and camera lens connect must be accurate, and the diameter of the two will be controlled at 7mm becomes the optical fundus digital imaging system application of restriction Radix Rumicis high definition always with interior or the like these factors a technical difficult problem.
[summary of the invention]
The present invention has overcome the deficiencies in the prior art, and a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band is provided.
In order to solve the technical problem of above-mentioned existence, the present invention adopts related art scheme:
A kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band, be characterised in that and include sleeve, be provided with annular LGP at the sleeve head end, be provided with light-emitting device at telescopic tail end, be provided with built-in optical fiber at sleeve lining, one end light of built-in optical fiber is connected to annular LGP end, and the other end light of built-in optical fiber is connected on the light-emitting device.
Aforesaid a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band, be characterised in that described 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, external optical fiber is connected with built-in optical fiber light.
Aforesaid a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band is characterised in that the diameter of described built-in optical fiber is 0.5mm-0.75mm, is located at no more than 100 of the built-in number of fibers of sleeve lining.
Aforesaid a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band, be characterised in that described annular LGP is a similar conical sleeve, annular LGP point diameter is that 7.2mm, rear end diameter are that 17mm, length are that the thickness of 5mm-7mm, wall is that 0.5mm-1.0mm, tapering are 15 °; The rear end face of annular LGP is parallel with front end face, and the front end of annular LGP, rear end are transparent, then are coated with reflective membrane in the interior outside of annular LGP.
Aforesaid a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band, internal face and first piece of eyeglass front end of digital camera lens of being characterised in that described annular LGP coincide, adopt medical silica-gel bonding and make it to form seamless link between the internal face of first piece of eyeglass and annular LGP, the curvature of annular LGP is identical with the curvature of first piece of eyeglass.
The present invention compared with prior art has the present invention following advantage is arranged:
Illuminator of the present invention mainly is made up of light-emitting device, built-in optical fiber, LGP and related accessory.This forward type annular illumination system illumination range is greater than the imaging scope, because light source has been avoided catoptrical generation without the eyeglass of imaging optical path, brightness is even, scalable, has satisfied the lighting requirement that Radix Rumicis high definition optical fundus digital camera is taken fully.It has its volume little, and the inboard and first eyeglass seamless combination of digital camera lens of the front end of annular LGP is continuous arcuate structure, and be identical with camera lens curvature.The outside is slick and sly, in use can not produce mechanical injuries to the eyes cornea.
Make this illuminator have following advantage by above structure:
1, this lighting system structure compactness, volume is little, engages the back diameter with first eyeglass of digital camera lens about 7mm, under the situation of the abundant mydriasis of tested eye, can satisfy the lighting requirement that the comprehensive multi-angle in optical fundus is taken.
2, this forward type annular illumination system, illuminating effect can cover the imaging scope near coaxial-illuminating, and light sees through aqueous humor, crystalline lens and vitreous body through producing certain refraction behind the cornea, is projected on equably on the retina, does not have dark angle.And the eyeglass reflection veiling glare of having avoided coaxial-illuminating to cause fully.
3, this forward type annular illumination system has adopted external optical fiber and built-in optical fiber to transmit, and guarantees the brightness and the directivity of throwing light on, and can adjust the brightness optical wavelength different with selection of illumination as required.
4, this forward type ring illumination, owing to used non-coaxial light source, the flare of having avoided the light path lens front end to produce is fully guaranteed the fundus imaging quality.
[description of drawings]
Fig. 1 is a cut-away view of the present invention;
Fig. 2 is a partial perspective view of the present invention.
[specific embodiment]
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
A kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band, it comprises and includes sleeve 1, be provided with annular LGP 2 at sleeve 1 head end, tail end at sleeve 1 is provided with light-emitting device 4, also also be provided with the multiple lens group in the sleeve 1, be three groups of lens groups in the present embodiment, it is respectively first lens group 5, second lens group 6, the 3rd lens group 7.
Be provided with built-in optical fiber 3 at sleeve 1 inwall, in the present embodiment, the diameter of described built-in optical fiber 3 is 0.5mm-0.75mm.Be located at no more than 100 of built-in optical fiber 3 quantity of sleeve 1 inwall, built-in optical fiber 3 is distributed in around the inwall of sleeve 1.One end light of described built-in optical fiber 3 is connected to annular LGP 2 ends, and the other end light of built-in optical fiber 3 is connected on the light-emitting device 4.
Specifically, described light-emitting device 4 includes cold light source and the light that cold light source sends is transmitted to the external optical fiber 41 of built-in optical fiber 3, and external optical fiber 41 is connected with built-in optical fiber 3 light.The luminous light that goes out of cold light source is transmitted to light on the built-in optical fiber 3 through external optical fiber 41, and light is transmitted on the annular LGP 2 by built-in optical fiber 3.
As the optimal way of present case, described annular LGP 2 is similar conical sleeves, and annular LGP 2 point diameters are that 7.2mm, rear end diameter are that 17mm, length are that the thickness of 5mm-7mm, wall is that 0.5mm-1.0mm, tapering are 15 °.The rear end face of annular LGP 2 is parallel with front end face, and the front end of annular LGP, rear end are transparent, then are coated with reflective membrane in the interior outside of annular LGP.Described sleeve 1 is with built-in optical fiber and LGP is fixing and protection.
The light of built-in optical fiber 3 vertically passes LGP in annular LGP rear end, and from the front end ejaculation of LGP, the light of ejaculation is inwardly most of, and small part is disperseed, and forms a surround relatively uniformly, forms the effective surround of similar round forwardly.And owing to then be coated with reflective membrane outside in the LGP, light end-fire in the past goes out, and can not leak from the interior outside.
Have again, first piece of eyeglass 51 front end of the internal face of described annular LGP 2 and digital camera lens first lens group 5 coincide, adopt medical silica-gel bonding and make it to form seamless link between the internal face of first piece of eyeglass 51 and annular LGP 2, the curvature of annular LGP is identical with the curvature of first piece of eyeglass.
The operation principle of this forward type annular illumination system is: the visible light that cold light source produces is sent to optical fundus digital camera optical fiber interface (being the access port of built-in optical fiber 3) through external optical fiber, arrive annular LGP rear end through built-in optical fiber again after joining, visible light is penetrated by annular LGP rear end forward end, annular LGP light-emitting window is through optical design, the light major part is assembled to the center, all the other light are scattering, the circular relatively uniformly surround of one of form forwardly, irradiating angle is big, covers optical fundus digital camera coverage fully.The brightness of the light that cold light source sends can be regulated by the brightness of regulating the cold light source bulb.The selection of the light wave of different wave length can realize by the filter that is placed in the cold light source front end.
Claims (5)
1. ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band, be characterised in that and include sleeve (1), be provided with annular LGP (2) at sleeve (1) head end, tail end at sleeve (1) is provided with light-emitting device (4), be provided with built-in optical fiber (3) at sleeve (1) inwall, one end light of built-in optical fiber (3) is connected to annular LGP (2) end, and the other end light of built-in optical fiber (3) is connected on the light-emitting device (4).
2. a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band according to claim 1, be characterised in that described light-emitting device (4) includes cold light source and the light that cold light source sends is transmitted to the external optical fiber (41) of built-in optical fiber (3), external optical fiber (41) is connected with built-in optical fiber (3) light.
3. a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band according to claim 1 and 2, the diameter that is characterised in that described built-in optical fiber (3) is 0.5mm-0.75mm, is located at no more than 100 of built-in optical fiber (3) quantity of sleeve (1) inwall.
4. a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band according to claim 1 and 2, be characterised in that described annular LGP (2) is a similar conical sleeve, annular LGP (2) point diameter is that 7.2mm, rear end diameter are that 17mm, length are that the thickness of 5mm-7mm, wall is that 0.5mm-1.0mm, tapering are 15 °; The rear end face of annular LGP (2) is parallel with front end face, and the front end of annular LGP, rear end are transparent, then are coated with reflective membrane in the interior outside of annular LGP.
5. a kind of ring-like illuminator of forward type that is used for the digital camera lens of examination of ocular fundus band according to claim 4, internal face and first piece of eyeglass front end of digital camera lens of being characterised in that described annular LGP (2) coincide, adopt medical silica-gel bonding and make it to form seamless link between the internal face of first piece of eyeglass and annular LGP (2), the curvature of annular LGP is identical with the curvature of first piece of eyeglass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020555280XU CN201840465U (en) | 2010-09-29 | 2010-09-29 | Front ring-shaped illuminating system with digital lens for fundus examination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020555280XU CN201840465U (en) | 2010-09-29 | 2010-09-29 | Front ring-shaped illuminating system with digital lens for fundus examination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201840465U true CN201840465U (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020555280XU Expired - Lifetime CN201840465U (en) | 2010-09-29 | 2010-09-29 | Front ring-shaped illuminating system with digital lens for fundus examination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201840465U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966076A (en) * | 2010-09-29 | 2011-02-09 | 中山联合光电科技有限公司 | Forward type annular lighting system with digital lens |
| CN106725294A (en) * | 2017-03-03 | 2017-05-31 | 杨勋 | A kind of transparent outer tube endoscope structure |
| CN117706677A (en) * | 2024-01-11 | 2024-03-15 | 江苏富翰医疗产业发展有限公司 | Light guide method and device |
-
2010
- 2010-09-29 CN CN201020555280XU patent/CN201840465U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101966076A (en) * | 2010-09-29 | 2011-02-09 | 中山联合光电科技有限公司 | Forward type annular lighting system with digital lens |
| CN101966076B (en) * | 2010-09-29 | 2012-03-28 | 中山联合光电科技有限公司 | Forward type annular lighting system with digital lens |
| CN106725294A (en) * | 2017-03-03 | 2017-05-31 | 杨勋 | A kind of transparent outer tube endoscope structure |
| CN117706677A (en) * | 2024-01-11 | 2024-03-15 | 江苏富翰医疗产业发展有限公司 | Light guide method and device |
| CN117706677B (en) * | 2024-01-11 | 2024-04-26 | 江苏富翰医疗产业发展有限公司 | Light guide method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110525 Effective date of abandoning: 20120328 |