CN202078293U - Portable fundus camera - Google Patents
Portable fundus camera Download PDFInfo
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- CN202078293U CN202078293U CN2011201650028U CN201120165002U CN202078293U CN 202078293 U CN202078293 U CN 202078293U CN 2011201650028 U CN2011201650028 U CN 2011201650028U CN 201120165002 U CN201120165002 U CN 201120165002U CN 202078293 U CN202078293 U CN 202078293U
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- lens
- objective lens
- fundus camera
- illumination objective
- camera
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Abstract
The utility model relates to a portable fundus camera, which is structurally characterized in that a spectroscope is further arranged between an illuminating objective III and an illuminating objective II and fixed to a spectroscopic holder, a central axis of the spectroscope and axes of the illuminating objective III and the illuminating objective II coincide one another, an aberration compensator cylinder is further arranged at the horizontal lateral end of the spectroscopic holder, an aberration compensator is mounted inside the aberration compensator cylinder, a substrate is arranged on the other side of the aberration compensator and fixed to a casing of the fundus camera, and a rectangular slit, a double-wedge, a collimator objective and a laser source are sequentially fixed onto the substrate. The camera adopts optical wedges to split light for imaging fundus, the optical wedge component is directly mounted inside the fundus camera, and thereby operation time of plugging and unplugging stick lenses is omitted. Further, a light circuit design of the fundus camera is optimized, and the size of the camera is reduced, so that the camera is convenient to carry.
Description
Technical field
This utility model relates to a kind of portable fundus camera, and particularly a kind of fundus camera that has for optical fundus blur-free imaging and photograph belongs to the ophthalmic medical apparatus field.
Background technology
Fundus camera principle in the past: adopt illuminating bundle with light beam projecting in the optical fundus; Viewing optical system will guide to imaging and observation system from the reflected light on above-mentioned optical fundus, as everyone knows, such fundus camera has the light path bar-shaped eyeglass midway that can plug in above-mentioned lamp optical system, to be divided into the focus sighting target projection optical system of two-part focus sighting target optical projection by above-mentioned bar-shaped eyeglass and above-mentioned lamp optical system, reach the focusing purpose in above-mentioned optical fundus.This fundus camera focusing system complexity, not easy to operate, and also equipment volume is excessive, is not suitable for carrying in mobile operational process.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of portable fundus camera, adopt wedge spectroscopic imaging optical fundus, the wedge parts are directly installed on fundus camera inside, saved and inserted the operating time of getting bar-shaped eyeglass, this fundus camera has been optimized light path design simultaneously, dwindled the size of camera, can be convenient for carrying.
For overcoming the above problems, concrete technical scheme of the present utility model is as follows: a kind of portable fundus camera, comprise and connect the order object lens, the hollow illuminator, aperture diaphragm, the Amici prism II, photographic lens, imaging CCD, viewing objective, observe and use CCD, the illumination objective lens III, the illumination objective lens II, illuminator, the illumination objective lens I, annular diaphragm, Amici prism, the condenser lens II, xenon lamp, the condenser lens I, lamp, reflector I and reflector II, between described illumination objective lens III and illumination objective lens II, also be provided with spectroscope, spectroscope is fixed on the beam split mirror holder, the dead in line of its central axis and illumination objective lens III and illumination objective lens II, horizontal side at the beam split mirror holder also is provided with the aberration compensation lens barrel, the aberration compensation mirror is housed in it, opposite side at the aberration compensation mirror is provided with substrate, this substrate and fundus camera casing are fixed, fixing rectangular slot successively on substrate, two wedges, collimator objective and LASER Light Source.
Described lamp is the infrared LED lamp, and described LASER Light Source is an infrared laser light source.
Portable camera adopts said structure, make LASER Light Source pass through collimator objective, two wedge, rectangular slot and aberration compensation mirror, after refraction on the spectroscope, reflect through the hollow illuminator more then, enter human eye, by regulating the distance of photographing unit and human eye, described imaging is shown the optical fundus clearly with CCD with CCD and observation.
Described lamp is the infrared LED lamp, and described LASER Light Source is an infrared laser light source, i.e. adopt Infrared when monitoring and accurate focusing, has avoided the infringement of high light to human eye.
Description of drawings
Fig. 1 is the structured flowchart of portable fundus camera.
Fig. 2 is the theory diagram of portable fundus camera.
Fig. 3 is the outline drawing of two wedges.
Fig. 4 is the outline drawing of rectangular slot.
Fig. 5 is the schematic diagram of light by two wedges and rectangular slot.
Fig. 6 is the location drawing of LASER Light Source.
Fig. 7 is the image of LASER Light Source on the optical fundus of normal eye.
Fig. 8 is the image of LASER Light Source on presbyopic optical fundus.
Fig. 9 is the image of LASER Light Source on bathomorphic optical fundus.
The specific embodiment
As shown in Figure 1, a kind of portable fundus camera, comprise and connect order object lens 2, hollow illuminator 3, aperture diaphragm 4, Amici prism II 6, photographic lens 7, imaging CCD8, viewing objective 9, observe and use CCD10, illumination objective lens III 11, illumination objective lens II 13, illuminator 14, illumination objective lens I 15, annular diaphragm 16, Amici prism 17, condenser lens II 18, xenon lamp 19, condenser lens I 20, lamp 21, reflector I 22 and reflector II 23, between described illumination objective lens III 11 and illumination objective lens II 13, also be provided with spectroscope 12, spectroscope 12 is fixed on the beam split mirror holder 12a, the dead in line of its central axis and illumination objective lens III 11 and illumination objective lens II 13, horizontal side at beam split mirror holder 12a also is provided with aberration compensation lens barrel 23b, aberration compensation mirror 23 is housed in it, opposite side at aberration compensation mirror 23 is provided with substrate 5, this substrate 5 is fixed with the fundus camera casing, fixing rectangular slot 24 successively on substrate, two wedges 25, collimator objective 26 and LASER Light Source 27, the light that LASER Light Source 27 sends reflects through spectroscope 12, the paths merge of the light that its path and lamp 21 send after illuminator 14 refractions.
Described lamp 21 is the infrared LED lamp, and described LASER Light Source 27 is an infrared laser light source.
The operation principle of this portable camera is: as shown in Figure 2, launch infrared light through 22 reflections of reflector I by infrared LED 21, again through condenser lens I 20, reflect after annular diaphragm 16 and illumination objective lens I 15 through Amici prism 17, pass through illumination objective lens II 13, spectroscope 12 and illumination objective lens III 11 again by illuminator 14 refractions then, again through after hollow illuminator 3 refraction by connecing on the retina that order object lens 2 shine human eye, reach the purpose of infrared illumination.
The infrared light that infrared laser light source 27 sends (as Fig. 6), through collimator objective 26, two wedges 25, rectangular slot 24 and aberration compensation mirror 23, reflect after over-illumination object lens III 11 through spectroscope 12, pass through hollow reflecting mirror 3(edge reflector segment again) refraction back enters eyes imaging to retina by connecing order object lens 2, cursor on the retina is through human eye, connect order object lens 2, hollow space in the middle of the hollow reflecting mirror 3(), aperture diaphragm 4, the refraction of Amici prism 6, (viewing objective 9 is lens I 9a to pass through viewing objective 9 again, balsaming lens I 9b, balsaming lens II 9c, lens II 9d is arranged in order composition) be imaged onto imaging with on the CCD10, infrared CCD 10 is defeated by display system with the signal repeated transmission of gathering, display system meeting display highlighting state (as Fig. 7～9), rectangular slot and human eye retina are positioned on the conjugate planes, two wedges will be divided into two parts through the light of rectangular slot, rectangular slot can be regarded as, between the optical propagation direction of following two halves bar slit individual angle is arranged, corner dimension is by the angle of wedge decision of wedge.To emmetropia, rectangular slot can form a complete rectangle speck on the optical fundus like this.Judged whether out of focus by the distribution of observing two rectangle specks on the monitoring system, if out of focus is arranged, can judge the character and the size of out of focus by observing rectangle speck direction of separating and the distance of separating, by the mobile fundus camera of integral body, two orthogonal specks are transferred to overlap into a sensing and realize accurate focusing.
At last, fast gate control xenon lamp 19 sends visible light, through 23 reflections of reflector II, through condenser lens II 18, Amici prism I 17, annular diaphragm 16 and illumination objective lens I 15, through illuminator 14 refraction after illumination objective lens II 13, spectroscope 12, illumination objective lens III 11, hollow reflecting mirror 3(edge reflector segment) and connect order object lens 2 and enter human eye and shine on the retina, reach the purpose on rapid illumination optical fundus.Then, the light on optical fundus is arranged in order composition through connecing order object lens 2, hollow reflecting mirror 3 (hollow space), aperture diaphragm 4, Amici prism 6, photographic lens 7(photographic lens 7 for lens III 7a, balsaming lens III 7b, balsaming lens IV 7c, lens IV 7d) image on the imaging CCD 8, CCD8 is transferred to computer or display with image, finishes the purpose of photograph.
Claims (2)
1. portable fundus camera, comprise and connect order object lens (2), hollow illuminator (3), aperture diaphragm (4), Amici prism II (6), photographic lens (7), imaging CCD(8), viewing objective (9), observe and use CCD(10), illumination objective lens III (11), illumination objective lens II (13), illuminator (14), illumination objective lens I (15), annular diaphragm (16), Amici prism (17), condenser lens II (18), xenon lamp (19), condenser lens I (20), lamp (21), reflector I (22) and reflector II (23), it is characterized in that: between described illumination objective lens III (11) and illumination objective lens II (13), also be provided with spectroscope (12), spectroscope (12) is fixed on the beam split mirror holder (12a), the dead in line of its central axis and illumination objective lens III (11) and illumination objective lens II (13), horizontal side at beam split mirror holder (12a) also is provided with aberration compensation lens barrel (23b), aberration compensation mirror (23) is housed in it, opposite side at aberration compensation mirror (23) is provided with substrate (5), this substrate (5) and fundus camera casing are fixed, fixing rectangular slot (24) successively on substrate, two wedges (25), collimator objective (26) and LASER Light Source (27).
2. portable fundus camera as claimed in claim 1 is characterized in that: described lamp (21) is the infrared LED lamp, and described LASER Light Source (27) is an infrared laser light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201650028U CN202078293U (en) | 2011-05-23 | 2011-05-23 | Portable fundus camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201650028U CN202078293U (en) | 2011-05-23 | 2011-05-23 | Portable fundus camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202078293U true CN202078293U (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201650028U Expired - Lifetime CN202078293U (en) | 2011-05-23 | 2011-05-23 | Portable fundus camera |
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| CN (1) | CN202078293U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102657514A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Portable retinal imager |
| CN102657515A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Alignment light path device applied to retinal imaging system |
| CN102657516A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Automatic retina imaging system |
| CN102688016A (en) * | 2012-03-07 | 2012-09-26 | 北京理工大学 | Novel mydriasis-free portable fundus camera |
| CN104523221A (en) * | 2014-12-17 | 2015-04-22 | 严俊文 | Eye ground camera imaging system based on liquid lens focusing |
| CN108309228A (en) * | 2017-01-16 | 2018-07-24 | 天津工业大学 | portable fundus camera optical system |
| CN110584591A (en) * | 2019-09-03 | 2019-12-20 | 佛山科学技术学院 | High-precision portable diopter detector |
-
2011
- 2011-05-23 CN CN2011201650028U patent/CN202078293U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102688016A (en) * | 2012-03-07 | 2012-09-26 | 北京理工大学 | Novel mydriasis-free portable fundus camera |
| CN102688016B (en) * | 2012-03-07 | 2015-12-02 | 北京理工大学 | A kind of fundus camera |
| CN102657514A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Portable retinal imager |
| CN102657515A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Alignment light path device applied to retinal imaging system |
| CN102657516A (en) * | 2012-05-10 | 2012-09-12 | 中国科学院长春光学精密机械与物理研究所 | Automatic retina imaging system |
| CN102657515B (en) * | 2012-05-10 | 2014-03-12 | 中国科学院长春光学精密机械与物理研究所 | Alignment light path device applied to retinal imaging system |
| CN102657514B (en) * | 2012-05-10 | 2014-06-18 | 中国科学院长春光学精密机械与物理研究所 | Portable retinal imager |
| CN104523221A (en) * | 2014-12-17 | 2015-04-22 | 严俊文 | Eye ground camera imaging system based on liquid lens focusing |
| CN108309228A (en) * | 2017-01-16 | 2018-07-24 | 天津工业大学 | portable fundus camera optical system |
| CN110584591A (en) * | 2019-09-03 | 2019-12-20 | 佛山科学技术学院 | High-precision portable diopter detector |
| CN110584591B (en) * | 2019-09-03 | 2024-04-30 | 佛山科学技术学院 | High-precision portable diopter detector |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111221 |
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| CX01 | Expiry of patent term |