CN103040433A - Tilt-shift tomography eye scanning system and method thereof - Google Patents
Tilt-shift tomography eye scanning system and method thereof Download PDFInfo
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- CN103040433A CN103040433A CN2011103115802A CN201110311580A CN103040433A CN 103040433 A CN103040433 A CN 103040433A CN 2011103115802 A CN2011103115802 A CN 2011103115802A CN 201110311580 A CN201110311580 A CN 201110311580A CN 103040433 A CN103040433 A CN 103040433A
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- sighting target
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Abstract
The invention discloses a tilt-shift tomography eye scanning system and a method thereof, relates to the field of optical instruments for the ophthalmology, and aims at solving the problem of eye fixation during focusing. The scanning system comprises a light source (1), a fracture diaphragm (2), a projecting mirror group (3), a color-separating reflective device (4), eye forepart tissues (5), an eye (6), tilt-shaft imaging lenses (7), tilt-shift cameras (8), focusing lenses (9), focusing cameras (10), a fixed support assembly (11), and a rotary disc assembly (12). A focusing sighting mark optical path device (13) is further arranged; can comprise a focusing sighting mark light source (14), a focusing sighting mark projection lens (15) and a color-separating reflective mirror (16); is installed on the fixed support assembly (11); and provides gaze sighting marks for the eye (6) to enable the eye forepart tissues (5) to be basically fixed. The tilt-shift tomography eye scanning system and the method thereof are mainly used for examining eye forepart tissues.
Description
Technical field
The present invention relates to the opticianry instrument field, be specifically related to a kind of axle tomography eye scanning system and method thereof of moving.
Background technology
The following concrete defective of the present axle tomography eye scanning system that moves ubiquity:
1. in the situation without the focusing sighting target, the sight line of the measured does not have definite direction, and eyeball easily rotates, and affects check result.
2. abroad also have and adopt the focusing sighting target, but what generally adopt is that mode at projecting light path eyeglass portrayal symbol realizes, if the focusing sighting target that this mode provides is too little, patient's eye be difficult for to be sought, if the scope that too large patient stares may be excessive, not only stares effect not so good, and easily upset and lose light, affect illumination, thereby affect the shooting effect of camera, and then affect measurement result; The position adjustment of sighting target of focusing in addition is also inconvenient.
3. announced in 15th such as JIUYUE in 2010, publication number provides " a kind of tilt-shift fault scanning device " for the Chinese invention patent of CN 101828900 A, realized well the rotation sweep camera function, its claim 1 been has clearly has been recorded and narrated " center of rotation of rotating disk (1-18) coincides with the focusing light path center of focusing light path equipment ", its claim 3 been has clearly has been recorded and narrated " being provided with 2～4 red light emitting diodes at Amici prism (1-6) ", but in the technology that the red light that the red diode that adopts the light path center is sent is used for focusing, if patient's eye is take red diode as the sighting target light source, patient's axis oculi is over against whole device, red diode is positioned at the centre of Amici prism, must block the crack projecting light path on the main optical path, rotation is taken a picture and focusing can not imaging near taking a picture in the middle of the taken image, whole device can not be finished the stereo image-forming function near the position axis oculi well; And red diode is when being positioned at the edge of Amici prism, if adopt a plurality of diodes that described eyes can not be stared because staring the target dispersed and distributed, therefore in these cases whole device can not finish align fully stare the focusing shoot function.
In addition, the mode of " focusing light path equipment is located at rotating disk (on the 1-18) " also clearly recorded and narrated in its claim 1 can make the service cable of " focusing light path equipment " such as " red light emitting diodes " rotate with rotating disk (1-18), so but limited the rotating cycle of rotating disk (1-18), and cable is frequently torn, easily damage, even realize the rotation power supply by carbon brush, carbon brush also easily breaks down or damages, and always needs frequent.
Do not see yet in the market and overcome above defective, the focusing sighting target not only can be provided, and the focusing effect comprehensively, stare effect better, higher, the rotating cycle of image quality can be unrestricted, equipment dependability is higher moves axle tomography eye scanning system and method.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide never see on a kind of market can overcome these defectives, the focusing sighting target can be provided, and the focusing effect comprehensively, stare effect better, higher, the rotating cycle of image quality can be unrestricted, equipment dependability is higher moves axle tomography eye scanning system and method.
The present invention adopts following technical proposals:
System comprises light source 1, crack diaphragm 2, projectoscope group 3, the reflective device 4 of color separation, eyes leading portion tissue 5, eyes 6, moves imaging shaft camera lens 7, moves camera shaft 8, focus lens 9, focusing camera 10, m 11, rotary disk assembly 12.
Its creationary technical characterictic is:
Also be provided with focusing sighting target light path equipment 13; Described focusing sighting target light path equipment 13 is arranged on the m 11, stares sighting target for described eyes 6 provide, and makes described eyes leading portion tissue 5 substantially fixing.
The optical axis of described focusing sighting target light path equipment 13 can be vertical with the central shaft of described rotary disk assembly 12 or overlaps; Correspondingly, described focusing camera 10 optical axises can overlap with the central shaft of described rotary disk assembly 12 or be vertical.
Described focusing sighting target light path equipment 13 can all or part ofly comprise focusing sighting target light source 14, focusing sighting target projection lens 15, color separation illuminator 16.
When the optical axis of described focusing sighting target light path equipment 13 vertical with the central shaft of described rotary disk assembly 12, and the optical axis of described focusing camera 10 is when overlapping with the central shaft of described rotary disk assembly 12, described color separation illuminator 16 can be arranged on described focus lens 9, between the focusing camera 10 or be arranged on described focus lens 9, between the reflective device 4 of color separation, so that the light reflection that described focusing sighting target light source 14 is sent makes described eyes 6 stare motionless and focus for described eyes 6, and the light that described eyes leading portion tissue 5 is reflected again transmission finish the photograph of focusing to described focusing camera 10.
When the optical axis of described focusing sighting target light path equipment 13 overlaps with the central shaft of described rotary disk assembly 12, and the central shaft of the optical axis of described focusing camera 10 and described rotary disk assembly 12 is when vertical, described color separation illuminator 16 can be arranged on described focus lens 9, between the focusing camera 10 or be arranged on described focus lens 9, between the reflective device 4 of color separation, so that the light transmission that described focusing sighting target light source 14 is sent makes described eyes 6 stare motionless and focus for described eyes 6, and the light that described eyes leading portion tissue 5 reflects reflected to described focusing camera 10 again finish the photograph of focusing.
The light that described focusing sighting target light source 14 sends can adopt the luminous ray with key lighting light different wave length.
When described light source (1) adopted the blue visible light source, preferably, described focusing sighting target light source (14) can adopt red visible light source.
The effect of the reflective device 4 of described color separation is light that described light source 1, focusing sighting target light source 14 are sent through being incorporated into together, and the reverse reflected light of the described eyes leading portion of transmission tissue 5.
The present invention is different from the technical scheme that contrasts patent, beneficial effect is also different, focusing light path equipment no longer is located on the rotating disk, but " being arranged on the m 11 ", can realize powering with attached cable, cable can not followed rotating disk and be rotated, thus the revolution number of turns of rotating disk can be more therefore and limited; The sighting target that provides can be with suitable size shape, and single-point ground is present in the center of slit of illumination background, makes described eyes stare well this center sighting target, to realize good focusing shooting effect.
The significant advantage of the present invention and beneficial effect are embodied in the following aspects:
1. in measuring process, can allow the measured stare the focusing sighting target, so the concordance of repeatedly measuring increases substantially.
2. in measuring process, sighting target does not block or upsets crack, visual field light, can photograph better near the position of axis oculi, and shooting effect increases substantially.
3. because the present invention has adopted the illumination of independent focusing sighting target, guarantee can not reduce the illumination of key lighting light path, make the picture of shooting more clear, thus Effective Raise certainty of measurement.
4. before focusing sighting target light source, increase focusing sighting target projection lens, improved the utilization rate of focusing sighting target light source.
5. the equipment such as focusing sighting target light source has been realized with the attached cable power supply, and the reliability of electrical connection improves, and the rotary disk rotation can be therefore not limited again.
Description of drawings
Fig. 1 is the schematic diagram of first embodiment of the invention.
Fig. 2 is the schematic diagram of second embodiment of the invention.
Fig. 3 is the schematic diagram of third embodiment of the invention.
Fig. 4 is the schematic diagram of fourth embodiment of the invention.
Among Fig. 1-4: light source 1, crack diaphragm 2, projectoscope group 3, the reflective device 4 of color separation, eyes leading portion tissue 5, eyes 6, move imaging shaft camera lens 7, move camera shaft 8, focus lens 9, focusing camera 10, m 11, rotary disk assembly 12, focusing sighting target light path equipment 13, focusing sighting target light source 14, focusing sighting target projection lens 15, color separation illuminator 16.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further elaborated again:
Among Fig. 1, native system comprises light source 1, crack diaphragm 2, projectoscope group 3, the reflective device 4 of color separation, eyes leading portion tissue 5, eyes 6, moves imaging shaft camera lens 7, moves camera shaft 8, focus lens 9, focusing camera 10, m 11, rotary disk assembly 12.
Also be provided with focusing sighting target light path equipment 13; Described focusing sighting target light path equipment 13 is arranged on the m 11, stares sighting target for described eyes 6 provide, and makes described eyes leading portion tissue 5 substantially fixing.
The optical axis of described focusing sighting target light path equipment 13 can be vertical with the central shaft of described rotary disk assembly 12; Correspondingly, described focusing camera 10 optical axises can overlap with the central shaft of described rotary disk assembly 12.
Described focusing sighting target light path equipment 13 has comprised focusing sighting target light source 14, focusing sighting target projection lens 15, color separation illuminator 16.
Described color separation illuminator 16 is arranged between described focus lens 9, the focusing camera 10, so that the light reflection that described focusing sighting target light source 14 is sent makes described eyes 6 stare motionless and focus for described eyes 6, and the light that described eyes leading portion tissue 5 is reflected again transmission finish the photograph of focusing to described focusing camera 10.
The light that described focusing sighting target light source 14 sends can adopt the luminous ray with key lighting light different wave length.When described light source (1) adopted the blue visible light source, preferably, described focusing sighting target light source (14) can adopt red visible light source.
The effect of the reflective device 4 of described color separation is light that described light source 1, focusing sighting target light source 14 are sent through being incorporated into together, and the reverse reflected light of the described eyes leading portion of transmission tissue 5.
Its implementation process of finishing the rotation sweep photograph is as follows:
In the described eyeball leading portion tissue 5 substantially actionless situations in described eyes 6, the light that described light source 1 sends is behind described crack diaphragm 2, form narrow slit light, through described projectoscope group 3 projections, reflect to described eyeball leading portion tissue 5 through the reflective device 4 of described color separation again.The light of described eyes front end tissue 5 reflections arrives described focusing camera 10 after the reflective device 4 of described color separation, focus lens 9,10 pairs of described eyeball leading portion tissues 5 of described focusing camera carry out positive taking pictures, as basic reference picture.
The light of described eyes front end tissue 5 reflections also through described move imaging shaft camera lens 7 after, arrive the described camera shaft 8 that moves, finish once photo taking.
Described rotary disk assembly 12 drives and move imaging shaft camera lens 7, moves camera shaft 8 can be around the main optical path rotation of the reflective device 4 of described color separation with described eyes front end tissue 5, finish repeatedly and take pictures, the image of repeatedly taking pictures can synthesize the stereo-picture of described eyes front end tissue 8.
The two-way light of described eyes 6 reflections is arranged to fixed angle α, described sensor plane and described input path of moving camera shaft of moving camera shaft 8 is arranged to fixed angle β, the incident primary optical axis that described sensor plane of moving camera shaft 8 is extended with described eyes 6 meets at a bit, angle α, angle β, intersection point field depth and the image quality that can improve fault imaging be set.
The whole axle tomography eye scanning system that moves can finish focusing photograph and rotating scan imaging function to described eyes leading portion tissue 5 better thus, and upset gear crack illuminating ray because the focusing sighting target is fixedly installed and does not hide in position, middle, visual field, make to check that the picture quality of taking is higher.
Among Fig. 2, implement principle and process and Fig. 1 basic identical, the optical axis of described focusing sighting target light path equipment 13 is vertical with the central shaft of described rotary disk assembly 12, and described focusing camera 10 optical axises can overlap with the central shaft of described rotary disk assembly 12, its difference is, described color separation illuminator 16 is arranged on described focus lens 9, between the reflective device 4 of color separation, the light reflection that still can send described focusing sighting target light source 14 makes described eyes 6 stare motionless and focus to described eyes 6, and the light that described eyes leading portion tissue 5 is reflected again transmission finish the photograph of focusing to described focusing camera 10.
Among Fig. 3, the optical axis of described focusing sighting target light path equipment 13 overlaps with the central shaft of described rotary disk assembly 12, and the optical axis of described focusing camera 10 is vertical with the central shaft of described rotary disk assembly 12, described color separation illuminator 16 is arranged between described focus lens 9, the focusing camera 10, the light transmission that can send described focusing sighting target light source 14 makes described eyes 6 stare motionless and focus to described eyes 6, and the light that described eyes leading portion tissue 5 reflects reflected to described focusing camera 10 again finishes the photograph of focusing.
Among Fig. 4, the optical axis of described focusing sighting target light path equipment 13 overlaps with the central shaft of described rotary disk assembly 12, and described focusing camera 10 optical axises are vertical with the central shaft of described rotary disk assembly 12, described color separation illuminator 16 is arranged between described focus lens 9, the reflective device 4 of color separation, the light transmission that also can send described focusing sighting target light source 14 makes described eyes 6 stare motionless and focus to described eyes 6, and the light that described eyes leading portion tissue 5 reflects reflected to described focusing camera 10 again finishes the photograph of focusing.
Claims (7)
1. one kind is moved axle tomography eye scanning system and method thereof, system comprises light source (1), crack diaphragm (2), projectoscope group (3), the reflective device of color separation (4), eyes leading portion tissue (5), eyes (6), moves imaging shaft camera lens (7), moves camera shaft (8), focus lens (9), focusing camera (10), m (11), rotary disk assembly (12), it is characterized in that
Also be provided with focusing sighting target light path equipment (13);
Described focusing sighting target light path equipment (13) is arranged on the m (11), stares sighting target for described eyes (6) provide, and makes described eyes leading portion tissue (5) substantially fixing.
2. axle tomography eye scanning system and the method thereof of moving according to claim 1 is characterized in that, the optical axis of described focusing sighting target light path equipment (13) can be vertical with the central shaft of described rotary disk assembly (12) or overlaps; Correspondingly, described focusing camera (10) optical axis can overlap with the central shaft of described rotary disk assembly (12) or be vertical.
3. axle tomography eye scanning system and the method thereof of moving according to claim 2, it is characterized in that, described focusing sighting target light path equipment (13) can all or part ofly comprise focusing sighting target light source (14), focusing sighting target projection lens (15), color separation illuminator (16).
4. axle tomography eye scanning system and the method thereof of moving according to claim 2, it is characterized in that, when the optical axis of described focusing sighting target light path equipment (13) vertical with the central shaft of described rotary disk assembly (12), and the optical axis of described focusing camera (10) is when overlapping with the central shaft of described rotary disk assembly (12), described color separation illuminator (16) can be arranged on described focus lens (9), between the focusing camera (10) or be arranged on described focus lens (9), between the reflective device of color separation (4), so that the light reflection that described focusing sighting target light source (14) is sent makes described eyes (6) stare motionless and focus for described eyes (6), and the light that described eyes leading portion tissue (5) is reflected again transmission finish the photograph of focusing to described focusing camera (10).
5. axle tomography eye scanning system and the method thereof of moving according to claim 2, it is characterized in that, when the optical axis of described focusing sighting target light path equipment (13) overlaps with the central shaft of described rotary disk assembly (12), and the central shaft of the optical axis of described focusing camera (10) and described rotary disk assembly (12) is when vertical, described color separation illuminator (16) can be arranged on described focus lens (9), between the focusing camera (10) or be arranged on described focus lens (9), between the reflective device of color separation (4), so that the light transmission that described focusing sighting target light source (14) is sent makes described eyes (6) stare motionless and focus for described eyes (6), and the light that described eyes leading portion tissue (5) reflects reflected to described focusing camera (10) again finish the photograph of focusing.
6. according to claim 1,2,3,4 or 5 described axle tomography eye scanning system and the methods thereof of moving, it is characterized in that, the light that described focusing sighting target light source (14) sends can adopt the luminous ray with key lighting light different wave length.
7. according to claim 1,2,3,4 or 5 described axle tomography eye scanning system and the methods thereof of moving, it is characterized in that, when described light source (1) adopted the blue visible light source, preferably, described focusing sighting target light source (14) can adopt red visible light source.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103115802A CN103040433A (en) | 2011-10-14 | 2011-10-14 | Tilt-shift tomography eye scanning system and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103115802A CN103040433A (en) | 2011-10-14 | 2011-10-14 | Tilt-shift tomography eye scanning system and method thereof |
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| CN103040433A true CN103040433A (en) | 2013-04-17 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4187014A (en) * | 1977-01-29 | 1980-02-05 | Tokyo Kogaku Kikai Kabushiki Kaisha | Eye fundus camera |
| CN1143311A (en) * | 1993-12-17 | 1997-02-19 | 路易斯安那Edi公司 | Eye fundus optical scanner system and method |
| CN1194131A (en) * | 1998-03-30 | 1998-09-30 | 华北工学院 | Optical system for objective optometry instrument |
| JP2010148635A (en) * | 2008-12-25 | 2010-07-08 | Topcon Corp | Ophthalmic apparatus for laser medical treatment |
| CN101828900A (en) * | 2010-05-11 | 2010-09-15 | 上海美沃精密仪器有限公司 | Tilt-shift fault scanning device |
| CN201939328U (en) * | 2010-12-09 | 2011-08-24 | 苏州生物医学工程技术研究所 | Eye aberration correction imaging system based on phase difference |
| CN202288246U (en) * | 2011-10-14 | 2012-07-04 | 上海美沃精密仪器有限公司 | Tilt-shift tomography system for eyes |
-
2011
- 2011-10-14 CN CN2011103115802A patent/CN103040433A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4187014A (en) * | 1977-01-29 | 1980-02-05 | Tokyo Kogaku Kikai Kabushiki Kaisha | Eye fundus camera |
| CN1143311A (en) * | 1993-12-17 | 1997-02-19 | 路易斯安那Edi公司 | Eye fundus optical scanner system and method |
| CN1194131A (en) * | 1998-03-30 | 1998-09-30 | 华北工学院 | Optical system for objective optometry instrument |
| JP2010148635A (en) * | 2008-12-25 | 2010-07-08 | Topcon Corp | Ophthalmic apparatus for laser medical treatment |
| CN101828900A (en) * | 2010-05-11 | 2010-09-15 | 上海美沃精密仪器有限公司 | Tilt-shift fault scanning device |
| CN201939328U (en) * | 2010-12-09 | 2011-08-24 | 苏州生物医学工程技术研究所 | Eye aberration correction imaging system based on phase difference |
| CN202288246U (en) * | 2011-10-14 | 2012-07-04 | 上海美沃精密仪器有限公司 | Tilt-shift tomography system for eyes |
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Application publication date: 20130417 |