CN101953675A - Novel hand-held portable fundus camera device - Google Patents

Abstract

The invention discloses a novel handheld portable fundus camera device, which comprises an illumination part, a focusing part, an optical imaging part, a CCD (or CMOS) image sensor, a CPU, an image data processing module, an LCD display screen, a driving part, a wireless transmission part, an image storage part, an operation circuit, a USB interface circuit, a power part, etc.; and all devices are arranged in the same shell. The device has compact and light structure and is convenient to carry; the illumination light is completely consistent with the optical axis of a lens; the brightness and size of a light spot can be regulated so that the light spot can enter the fundus easily; during examination, an examiner observes directly from the LCD display screen on the front surface without lowering head to get close to a patient, and therefore the operation is convenient, comfortable and sanitary; the image is clear and amplified to facilitate observation; the observation image can be seen by multiple people at different places through wireless transmission, which is convenient for teaching; the video and image files can be stored in multiple formats; and the device is connected with a personal computer (PC) for editing and arranging information, inserting the electronic medical records of the patients or transmitting over internet conveniently. Moreover, typical fundus patterns of various diseases are stored, which can be called for reference and comparison.

Description

Novel handheld portable optical fundus camera head

Technical field

The present invention relates to field of medical, particularly a kind of handheld portable optical fundus camera head.

Background technology

One of important means of diagnosis ophthalmic diseases is not only in examination of ocular fundus, and is usually used in anxious critical illness and department of neurology patient.The doctor usually need check to patient at bedside.The eyes that the examiner need press close to patient though the hand-held ophthalmofundoscope of Shi Yonging in the past is easy to carry about with one are observed, not only inconvenience but also unhygienic and can not stay objective record.Some Fundus photographies and picture pick-up device are also arranged now, and CN02143503.0 reports as patent, but such equipment volume is big, needs can check in the special diagnosis room of ophthalmology.Therefore also lack in the clinical position now be easy to carry about with one, easy to use, can stay and see visitor's record so that relatively change of illness state and therapeutic effect, real practical examination of ocular fundus apparatus.In addition, because examination of ocular fundus operation and observation are all inconvenient, therefore also there is not at present the teaching demonstration equipment of this respect.

The present invention designs in order to satisfy above demand.

Summary of the invention

The purpose of this invention is to provide a kind ofly be easy to carry about with one, easy to use, the examination of ocular fundus device that can direct observation can take pictures and make a video recording again and retain record, can also carry out demonstration teaching.

In order to realize that above-mentioned purpose the present invention has adopted some following technical schemes:

Novel handheld portable optical fundus camera head partly is made up of illumination, focusing, optical imagery, CCD (or CMOS) imageing sensor, CPU and image data processing module, LCD display and driving, wireless transmit, image storage, function circuit, usb circuit, power supply etc.It is characterized in that: all devices of handheld portable optical fundus shooting dress all place same portable shell.

Described illumination section is made up of the knob and the circuit of shade, hot spot adjustable plate, light source installing plate, light emitting diode and adjusting brightness.It is characterized in that: an observation port is all arranged at the top of shade and light source installing plate, and the aligned in position of these two observation ports and camera lens is on the same horizontal line; One hot spot adjustable plate is arranged between shade and light source installing plate, a plurality of hot spot adjustment holes that vary in size are arranged on it, the hot spot adjustable plate is fixed in an end of central shaft, central shaft is fixed on the shade and can rotates, the other end of central shaft connects rotating disk, rotating disk is positioned at outside the shell, stirs rotating disk and can send out the hot spot adjustable plate is rotated within the specific limits, thereby different hot spot light adjustment holes can be forwarded on camera lens-shade observation port axis; Light emitting diode has two, the pipe box that light-collecting lens is housed is being overlapped in the outside, be contained in the both sides of light source installing plate observation port respectively, the light beam that is sent is thrown from both sides and is shone on hot spot adjustment hole and the shade observation port, quite send by the light beam behind the observation port from observation port, thereby make that the optical axis of illuminating ray and camera lens is in full accord, and the brightness of illumination light and spot size can be regulated.

Described focusing part is formed by adjusting the little eyeglass of diopter, zoom plate-like gear, travelling gear and outer casing underpart dioptric display window.At the periphery of zoom plate-like gear different dioptric little eyeglasses are installed, when zoom plate-like gear rotate in place, observation port on the little eyeglass of adjustment diopter, shade and the light source installing plate of topmost, hot spot adjustment hole, camera lens all on same horizontal line, are and observe the position this moment.Travelling gear and zoom plate-like gear are joined and are given prominence to shell, stir travelling gear and just drive the rotation of zoom plate-like gear, thereby forward the dioptric eyeglass of difference to observation place, and the compound camera lens that constitutes different focal is realized zoom.

Described optical imaging system comprises: the little eyeglass of adjustment diopter and the camera lens of extreme higher position on the shade observation port that is arranged in order, hot spot adjustment hole, light source installing plate observation port, the zoom plate-like gear, and their position is alignment one by one all, is on same the horizontal line.Described camera lens is the pinhole lens of fixed focal length, and it and CCD (or CMOS) imageing sensor closely are fitted together.Imageing sensor is connected to CPU and image data processing module, and the latter is connected with LCD driving and display panel module, wireless transmitter module, image storage, function circuit, usb circuit again.The feature of its optical imaging system and circuit structure is: shade observation port, hot spot adjustment hole, light source installing plate observation port, the little eyeglass of adjusting diopter, camera lens are arranged in order; LCD display and shade observation port place forward and backward of shell upper housing respectively.

Described power pack is made up of lithium battery and charging circuit, and places the handle of shell.

By writing software, the setting operation menu; Can preserve and play the image file of multiple form; The prestore optical fundus collection of illustrative plates of various diseases can call reference in case of necessity.

The present invention compares its positive effect with prior art: compact conformation, all devices are packed in the same shell, and volume is very little to be carried easily; The optical axis of illuminating ray and camera lens is in full accord, and the size of hot spot and brightness can be regulated, and sees the optical fundus easily clearly; By LCD display direct viewing eye fundus image, rotate travelling gear and just can realize zoom very easily, the examiner needn't bow and be close to the patient, easy to operate, comfortable, health; Clear picture also can be preserved with multiple form, both has been fit to set up electronic health record, can transmit on the net again and be convenient to remote medical consultation with specialists; Prestore the optical fundus collection of illustrative plates of various diseases so that comparison, reference; The image of observing can show for many people through wireless transmit, reception in real time to be watched simultaneously, therefore is particularly suitable for teaching.

Description of drawings

Fig. 1 is a front elevational schematic of the present invention.

Fig. 2 is horizontal side-looking generalized section of the present invention.

Fig. 3 is a schematic rear view of the present invention.

Fig. 4 is a circuit structure block diagram of the present invention.

Fig. 1,2,3, in, 1. horizontal 2. connectingportion 3. handle 4.LCD display screens 5.travelling gears 6. brightness regulation knobs 7. on and offswitch 8. operation push-button 9.USB sockets 10. charging sockets 11.pinhole lens 12. zoom plate-like gears 13. are adjusted little eyeglass 14. light emitting diodes ofdiopter 15. lightsource installing plates 16. light source installingplate observation ports 17.shade observation ports 18. hot spot adjustment holes 19. rotating disks 20. hot spot adjustable plates 21. zoom plate-like rotary gear axis 22. diopter display windows 23.shades 24. travellinggear turning cylinders 25. brightness regulation knob axles

The specific embodiment

Further specify as follows below in conjunction with drawings and Examples:

Fig. 1,2,3 is structural representation of the present invention.The top of novel handheld portable optical fundus camera head is to be flat 1 box-like horizontal portion, and the bottom is 3 handles of garden cylindricality, and the centre is 2 connecting portions.The front of 1 horizontal portion is 23 shades, and it is 18 shade observation ports about 6mm that there is a diameter its top.At 23 shade rears 20 hot spot adjustable plates are arranged, a plurality of 18 hot spot adjustment holes that vary in size are arranged on it, be connected with 23 shades and can change merit by central shaft 20 hot spot adjustable plates, the other end of central shaft 19 rotating disks outer with being positioned at shell fix, and stirring 19 rotating disks can forward 18 hot spot light adjustment holes of different sizes on camera lens-shade observation port axis to.15 light source installing plates be fixed on the 21 zoom plate-like rotary gear axis, but itself can not rotate.16 light source installing plate observation port both sides of 15 light source installing plates top are installed 14 light emitting diodes respectively, are set with the pipe box of light-collecting lens outward.The light that 14 light emitting diodes send shines on 18 hot spot adjustment holes and the 17 shade observation ports from both sides respectively, forms light beam and hot spot at 17 shade observation port dead aheads.6 brightness regulation knobs protrude in shell, scalable hot spot brightness during turn; Rotate 19 rotating disks and can change spot size

There are 12 zoom plate-like gears at the rear of 15 light source installing plates, and there are 21 zoom plate-like rotary gear axis at its center, also plays fixation except that supporting rotation.The periphery of 12 zoom plate-like gears is installed a series of little eyeglasses of different dioptric 13 adjustment diopters that have, when 12 zoom plate-like gears rotate in place, 13 adjust the little eyeglass of diopter, 16 light source installing plate observation ports, 18 hot spot adjustment holes, 17 shade observation ports and 11 pinhole lens all is on the same horizontal line, so the optical axis of image-forming block and illuminating bundle overlap fully.12 zoom plate-like gears and 5 travelling gears are joined, and 5 travelling gears partly protrude from shell, and there are 24 travelling gear turning cylinders at the center, rise fixing and the support turning effort.Stirring 5 teeth of passing on Gong just drives 12 zoom plate-like gears and rotates, just can adjust the place ahead that the little eyeglass of joint diopter forwards 11 pinhole lens to difference dioptric 13, thereby the real zoom of compound camera lens of forming different focal makes the different patient's of ophthalmic refractive the optical fundus can both blur-free imaging.

Fig. 4 is a circuit block diagram of the present invention.11 pinhole lens and 26CCD (or CMOS) pick off closely is connected as a single entity.During inspection with 17 shade observation ports towards patient, stir 6 brightness regulation knobs and 19 rotating disks, hot spot is transferred to suitable brightness and size.Hot spot is aimed at examinee's pupil, and light shines the optical fundus through pupil.The reflected light of eye fundus image projects on 26CCD (or CMOS) pick off and at this through optical imaging system and changes the signal of telecommunication into, passes to 27CPU and image data processing module immediately.In 27CPU and image data processing module, form picture signal through A/D conversion, coding compression, again through decoding, D/A conversion, outputing to 28LCD drives, show eye fundus image from the 29LCD display screen, stir 5 travelling gears, rotate 13 and adjust the little eyeglass of diopters, obtaining eye fundus image the most clearly, and can see that from 22 diopter display windows gauged 3 adjust the refractive diopter of the little eyeglass of diopters.Analogue signal after decoding, the D/A conversion also can be launched through 31 wireless transmitter modules, can manifest on screens such as TV by eye fundus image behind the wireless receiving, also can be converted to the VGA form and be apparent on the PC.Can push 8 operated keys if preserve image, by 32 function circuits and 27CPU and image data processing module, eye fundus image will be stored in the form of video file or bitmap file in 30 image storages.Silent from the preservation form be MPEG and JPG, but the form that also can change other into is preserved.If check the record of preservation, with the choosing broadcast from menu earlier of 8 operated keys, open video or bitmap file folder and file destination more successively, just show the image of original preservation on the 29LCD display screen; Also can with the 9USB socket novel handheld portable optical fundus camera head be connected with PC by the 33USB interface circuit, in computer, open, edit the eye fundus image of former preservation or be inserted into patient's electronic health record or transmit on the net.Also prestore the optical fundus collection of illustrative plates of various model cases in this external memory, can access in case of necessity compare, with for referencial use.

Claims (7)

1. novel handheld portable optical fundus camera head partly is made up of illumination, focusing, optical imagery, CCD (or CMOS) imageing sensor, CPU and image data processing module, LCD display and driving, wireless transmit, image storage, function circuit, usb circuit, power supply etc., it is characterized in that all devices of handheld portable optical fundus camera head all place among the same portable shell.

2. the principal character of novel handheld portable as claimed in claim 1 optical fundus camera head is: the little eyeglass of adjustment diopter and the camera lens of extreme higher position are arranged in order on shade observation port, hot spot adjustment hole, light source installing plate observation port, the zoom plate-like gear, aligned in position is on same the horizontal line.

3. the principal character of novel handheld portable as claimed in claim 1 optical fundus camera head is: its lighting source is two light emitting diodes, the pipe box that light-collecting lens is housed is being overlapped in the outside, be contained in the both sides of light source installing plate observation port respectively, the light that light emitting diode sent is thrown from both sides and is shone on hot spot adjustment hole and the shade observation port, by the light beam behind the observation port as sending by observation port, thereby the optical axis that guarantees illuminating ray and camera lens is in full accord.

4. the principal character of novel handheld portable as claimed in claim 1 optical fundus camera head is: a travelling gear of joining mutually with zoom plate-like gear is set, and make travelling gear have part to protrude in shell, stir travelling gear and just can drive the rotation of zoom plate-like gear, thereby be installed in zoom plate-like gear periphery, different dioptric little eyeglasses are arranged, turn to the place ahead of pinhole lens one by one, form the compound camera lens of serial different focal with this, thereby realize zoom.

5. the principal character of novel handheld portable as claimed in claim 1 optical fundus camera head is: the shade observation port is installed in relative position, horizontal front and back of shell respectively with LCD display, during inspection the shade observation port is aimed at patient's pupil, LCD display is towards the examiner.

6. the principal character of novel handheld portable as claimed in claim 1 optical fundus camera head is: except that CCD (or CMOS) pick off, also have LCD driving and LCD display, wireless transmitter module, image storage and usb circuit with CPU is connected with image data processing module, when carrying out examination of ocular fundus direct observation eye fundus image, can also recorded video with preserve image, real-time radio emission, be connected PC and image is edited inserted and transmit on the net.

7. the principal character of novel handheld portable as claimed in claim 1 optical fundus camera head is: the optical fundus collection of illustrative plates of the various diseases that prestored in the memorizer, can arbitrarily access make comparisons, reference.

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