CN1089123A

CN1089123A - Eye imaging system

Info

Publication number: CN1089123A
Application number: CN93114602A
Authority: CN
Inventors: 伯纳德·C·西塞; 艾伦·林·默弗里; 史蒂文·尤金·勒斯蒂; 詹姆斯·A·伯里斯
Original assignee: RESEARCH DEVELOPMENT FOUDATION
Current assignee: RESEARCH DEVELOPMENT FOUDATION; Research Development Foundation
Priority date: 1992-11-06
Filing date: 1993-11-06
Publication date: 1994-07-13
Also published as: ZA938193B; TW286275B; AU5593994A; IL107403A0; WO1994010900A1

Abstract

A kind of eye imaging system, this system has a handhold portable image pick-up device, and it is linked to each other with control station by a cable.Described handhold portable image pick-up device comprises that a light sends the fibre system of eyes to, imaging and focusing system, an iris and a ccd imager.Described control station provides a power supply, a light source, all filter lenss, camera monitor, control key and an outscriber.

Description

Eye imaging system

Eye imaging system of the present invention is that design is used for taking the image that people's camera oculi posterior structure comprises any structure in retina and the vitreous body same area.Photographed to eyes with the fundus camera that uses the 35mm film in the past.But such photographing unit has all restrictions, and the technology of having relatively high expectations during operation is restricted in the use.This camera system provides the super Radix Rumicis ken on optical fundus, has the ability of the shooting of colored optical fundus, fluorescein angiographic and stereo camera shooting.This camera system is distinguishable amphiblestroid about 80%, and can take the image with digital quality sequacious.Clearly digital resolution for for before diagnosis or the treatment and the state of an illness medical history that provides the patient after the treatment particularly the series record in one long period be very important.This camera system provides shot digital images, can observe immediately on monitor screen and study, and the storage of work numeral is provided with the back inspection and compares, and/or prints the hard copy medical history data through printer, or transmits by telephone wire through modem.

The present invention aim to provide have charged source, the eye imaging system of the control station of light source, light filter, observation monitor, control key and outscriber.One portable mobile imaging device is connected in control station by connection cord, and it comprises that one is sent to the optical fibers of eyes, imaging and focusing block, iris and a charge-coupled imaging device with light.Described connection cord has a control line, a feed cable and the optical cable that light source is provided.

Another object of the present invention provides an optical system that comprises removable optically focused and basic cornea camera lens.

A further object of the present invention provides a Goldran attachment lens and makes the usefulness of angle of anterior chamber imaging to substitute original corneal lens.

Another purpose of the present invention provides one and comprises that one 40/150 spend the imaging system of variable lenses.

A further object of the invention provides a viewfinder that comprises an electron focusing.

Another purpose of the present invention provides a recorder that comprises digital memory.

A further object of the present invention provides one and comprises that a coaxial optical fiber port is to install the usefulness of light pipe work through the illumination of sclera transmission.

Another object of the present invention provides a control station, and this control station comprises a tungsten light source, be connected to an optical cable and connection cord optical fiber port, and a rotatable wheel between tungsten lamp and optical fiber port, this wheel comprises a plurality of filter lenss.

A further object of the present invention provides an optic fibre light path system, and this optic fibre light path system is the outside of extend through image pick-up device and optical system longitudinally.

Other and further purpose, characteristics and advantage of the present invention are considered to the description that preferred embodiment done in conjunction with the accompanying drawings at present and will become very obvious the present invention is several by following, described embodiment is only as the example of enumerating, for explanation the present invention's usefulness, the present invention is not limited to embodiment described here.

Fig. 1 is the front view of eye imaging system of the present invention.

Fig. 2 is the top view of Fig. 1 system.

Fig. 3 is the side view of Fig. 1 system.

Fig. 4 is the shooting loop diagram of the parts of Fig. 1 system.

Fig. 5 is the control loop figure of Fig. 1 system.

Fig. 6 is the power circuit diagram of Fig. 1 system.

Fig. 7 is the cutaway view of the portable image pick-up device of the present invention.

Fig. 8 is the exploded view of portable image pick-up device parts.

Fig. 9 is the sectional schematic diagram that image pick-up device places lens different adjustment position when last.

Figure 10 is the cross-sectional view of the connection cord between control station of the present invention and the portable image pick-up device.

Figure 11 provides the schematic cross-section of the lens of 40 ° of videos of ophthalmic.

Figure 12 is similar to Figure 11, the sketch map of 150 ° of videos of demonstration ophthalmic.

Figure 13 is the original lens combination of portable image pick-up device of taking away, loads onto the schematic cross-section of Goldman lens.

Figure 13 A is the sketch map of the light path of light when passing through the Goldman lens of Figure 13.

Figure 14 is the schematic cross-section when having removed the original lens of portable image pick-up device and being used for the outside imaging of eye.

Figure 15 removes the schematic cross-section that original lens combination has been loaded onto the portable hand held image pick-up device of the present invention when light pipe is made indirect lighting.

Figure 16 is the schematic cross-section of light source and filter lens parts in the control station.

Figure 17 is the end-view of Figure 16 device.

See also accompanying drawing now.Numbering 10 general references eye imaging system of the present invention among the figure.It consists essentially of portable mobile imaging device 12, one control stations 14 and a connection cord 16.

See also Fig. 1 now to Fig. 6.This control station 14 consists essentially of a power supply 18, one light sources 20, all filter lenss 22, and control key 24, one image monitors 26, one outscribeies are a printer 28, one digital laser floppy disks 32 for example, and/or-VHS recorder 30.

Image pick-up device 12 comprises a fibre system 34, one imaging and focusing system 36 and a digital image device 38, this digital image device is for example 0.5 charge-coupled image sensor of a charge-coupled image sensor, it obtains image to send monitor 26 to by electronics method, printer 28, video cassette recorder (VCR) and floppy disk recorder 32.This charge-coupled device 38 comprises an automatic exposure pick off and an electron focusing device.

Now see also Fig. 7,8 and Fig. 9.This image pick-up device comprises charge-coupled image sensor 38, from the optical cable 40 of connection cord 16, imaging and focusing system, this system comprises a collecting lens 42, one basic cornea contact (pasting eye) lens 44, and basic lens 46, all these are total is referred to as basic lens combination, represent an iris 50 and a variable lens 52 with numbering 48 among the figure, basic lens combination 48 is connected on the image pick-up device 12 removably and can takes off, and this point will fully be narrated below.Iris 50 can be adjusted to the best that obtains the relevant state of an illness on the position of one of 5 F f-stop positions from F/4 to F/16 with the control depth of field and show one's color and imaging.Variable lens can be controlled at effectively imaging on the charge-coupled image sensor 38 the ken and can be by being regulated at the manual focusing knob of viewfinder 12 outsides or by shake control from keyboard control key 24.As seen from Figure 7, the light that comes out from optical cable 40 enters people's eyes by the coaxial optical fiber light path system 54 around the basic optical lens 48.

Now see also Figure 10, the connection cord 16 among the figure comprises quartzy optical cable 40, one feed cables 54 and a remote control cable 56.

Figure 11 and Figure 12 show the effect of variable lens 42.In Figure 11, this variable lens 42 has contracted then provides 150 ° the wide ken so that 40 ° the ken of human eye 11 to be provided in Figure 12.Though the 35mm photographing unit of prior art also can provide 148 ° the wide ken, it is crucial that the present invention can widen 150 ° to the ken, for example finds tumor in the eye because it helps to seek out other state of an illness.

See also Figure 13 and 13A now.Wherein original lens combination 48 has been taken off and has been replaced Goldman camera lens 60, and Goldman camera lens 60 has its mirror lens 62, and it can carry out near angle imaging as for example room within the eye of lesion detection device.

In Figure 14, lens combination is originally taken off and is replaced handhold portable image pick-up device 12 so that eyes are carried out outside imaging.

See also Figure 15 now.Optical cable mouth among the figure has a co-axial plug 64, can load onto a hard light pipe 66 and provide trans-scleral transillumination with the outside of giving eye in this optical cable socket.Its indirect lighting that provides.This for example suffers from cataract to taking the eyes of adult patients, and perhaps the relatively poor adult patients of eyes expansion capability is useful.

Now see also Figure 16 and 17.Clearly show that illumination filter lens system among the figure, have a tungsten lamp 20 and to replace lamp 20a in this system.One filter lens wheel 70 is driven by a motor 72, contains a plurality of

filter lenss

74,76,78 and 80 in this optical filtering mirror wheel 70.When wheel rotated between a tungsten lamp 20 and an optical fiber socket, the light that filters color was seen off by connection cord 16 and optical cable 40.There is the filter lens of many types can be with here, yellow T for example, orange, red, xanchromatic, fluorescein or green filter lens can be used.

The interior zone of eyes 11 passes through the cornea direct lighting by the light that places the image pick-up device 12 on the eye, by using intrinsic filter lens, the operator can select the spectrum composition that throws light on, carry out common black and white imaging or carry out colour imaging, the optical fundus is not had the observation or the imaging of red light, and the avy blue excitation of perhaps using fluorescein is to carry out imaging or fluorescein angiography.The illuminance of light can be by to the adjusting of the electric current that flows through tungsten lamp 20 or iris and regulated.

In control station 14, the image signal of exporting from image pick-up device 12 can send out and be presented on the monitor 26 by digital form by connection cord, thereby can make the operator obtain best observation or video.Under operator's instruction, this digital signal form with numeral of can being copied be stored in be provided with on the floppy disk 32 of computer the back with reference to and/or handled by computer, also can on a colorful digital printer 28, print usefulness for the hard copy history file.

Move by suitable craft at last and repeatedly shooting, imager 10 can provide the image of storage to carry out three-dimensional imaging with the structure that the eyes clinical diagnosis is needed.

The handhold portable image pick-up device of eye imaging system 10 of the present invention is useful especially to the patient that is bedridden with a lingering disease and the baby in the premature labor baby calorstat.Charge-coupled image sensor 38 comes favourablely than common 35mm photographing unit, because charge-coupled image sensor can be with low illumination, therefore, the make a video recording brightness in time can be hanged down to inside ofeye.Light is too greatly (phototoxicity) that might damage human eye.In addition, the output of charge-coupled image sensor 38 can directly be presented on the monitor 26, and the eyes picture that therefore can retain and not needing carries out test repeatedly.In addition, digital output can record, prints, and compares, and therefore reprocessing need the thing of storage greatly to reduce.

Eye imaging system of the present invention can write down amphiblestroid image with the ken of 40 ° or 150 ° with colour or black and white, and the super Radix Rumicis retina medical history file that the handhold portable system can make shooting extend to 150 ° becomes possibility, same system just can obtain different observations or video to eyes, the i.e. observation or the video of the outside and the front and back eye-chamber by the camera lens that changes the front simply.The present invention can be to save time and to save spatial mode memory image, also can be in the time in several seconds by the modem in any corner in the world full-color image be sent out.Low white light systems of the present invention does not need to use flash lamp when document image, this is to photophobia or fear that the patient of photic poison is very useful.At last, the present invention can be to by ICU(severe disease monitoring device) the continuous VHS tape of any image of obtaining carries out record, no matter they are chromatic, black and white or fluorescein angiographic.This has improved the explanation ability to medical worker and patient widely.

In camera system 10, can use any suitable components or device.But for the specific description of usefulness as an example is provided, observation or camera monitor 26 can be used the CT-1382-VY type monitor of Panasonic, outscriber 28 can be used the UP5200MD type recorder of Sony company, the AG-2520SQPB type VCR that VCR can use Panasonic company to sell, the AG810 that floppy disk recorder 32 can be sold with Panasonic, charge-coupled image sensor 38 can be with the LX-450A of Optronics company.The VCL-1106XA that variable lens 52 can use Sony company to sell.

Therefore, the present invention can carry out and reach foregoing purpose and other purposes and advantage fully.Though provide the present invention to be considered to preferable several embodiment at present above for example for the purpose of the explanation, but in the claimed range of spirit of the present invention and appended claims, being familiar with those skilled in the art is might make all modifications or change to the structure and the arrangement of parts fully.

Claims

1, a kind of eye imaging system, it comprises:

One control station, it has a power supply, a light source, all light filters, camera monitor, control key and outscriber,

One handhold portable image pick-up device, this image pick-up device have the fibre system that a light sends eyes to, imaging and Focused Optical system, and an iris and a charge-coupled image sensor, and

One connection cord between control station and this camera head, this connection cord has a control line, a feed cable, a light source optical cable.

2, the system as claimed in claim 1 is characterized in that, described optical system comprises removable optically focused and basic corneal contact lens head.

3, system as claimed in claim 2, this system comprises: a Goldman camera lens, in order to replace described optically focused and basic corneal contact lens head.

4, the system as claimed in claim 1, this system comprise 40/150 degree variable lens.

5, the system as claimed in claim 1 is characterized in that, described viewfinder comprises an automatic exposure pick off.

6, system as claimed in claim 5 is characterized in that, described viewfinder comprises an electron focusing device.

7, the system as claimed in claim 1 is characterized in that, described recorder comprises a digital memory.

8, the system as claimed in claim 1 is characterized in that, described image pick-up device comprises that a coaxial optical fiber port is used to install a light pipe to make the usefulness of trans-scleral indirect lighting.

9, the system as claimed in claim 1 is characterized in that, described control station comprises a tungsten lamp, an optical fiber port that links to each other with optical cable in the connecting line, and a rotatable wheel between tungsten lamp and optical fiber port, described wheel comprises a plurality of light filters.

10, the system as claimed in claim 1 is characterized in that, described fibre system longitudinal extension is by the outside of described image pick-up device and optical system.