KR102243332B1 - Apparatus for purpil inspection using mobile terminal - Google Patents

Abstract

According to the present invention, provided is an apparatus for pupil examination using a mobile terminal. The apparatus includes: a camera; an infrared light emission part placed in the vicinity of the camera to emit infrared light towards pupils of an examinee who is a subject; an examination light emission part for emitting red light and/or blue light towards the subject; an infrared band pass filter located in a front part of the camera to pass only an infrared wavelength; a wing cover formed to come in tight contact with surroundings of the eyes of the examinee, while surrounding the infrared light emission part, the examination light emission part and the infrared band pass filter, to make dark the surroundings of the eyes of the examinee; and a control part controlling the examination light emission part such that the examination light emission part takes an infrared image of the pupils of the examinee by using the infrared light emission part and the camera after emitting the light to the subject. Therefore, the present invention has an advantage of managing patients with glaucoma.

Description

Pupil inspection device using mobile terminal {APPARATUS FOR PURPIL INSPECTION USING MOBILE TERMINAL}

The present invention relates to a pupil inspection apparatus using a mobile terminal for examining the pupil of the subject by irradiating light of various wavelengths to the pupil of a subject using a mobile terminal and measuring the size of the pupil that changes accordingly.

The pupil is a circular hollow space located in the center of the iris. To maximize visual perception, the amount of light reaching the retina is adjusted and the depth of focus is increased to increase chromatic aberration (when an image is formed through a lens, the color of the object is It plays a role in reducing the position and ratio of the image formed according to the phenomenon) and spherical aberration (all aberrations other than chromatic aberration).

These pupils are expanded and contracted by the control action of the pupil sphincter and pupil dilator.If the amount of light entering the eye from the outside through the pupil is large, the amount of light reaching the retina is reduced to make a clearer image appear. The pupil is constricted, and on the contrary, when the amount of light entering the eye is small in a dark place, the pupil expands to accommodate a large amount of light.

Pupil sphincter and pupillary sphincter are under the control of the autonomic nervous system, so if there is a problem with the autonomic nervous system, the pupil cannot dilate and contract properly, and this phenomenon can lead to early detection of nervous system damage and ophthalmic diseases. It can be used as an important indicator.

Conventionally, there has been a device for examining the pupil using a fixed medical device in ophthalmic treatment, but this diagnosed ophthalmic diseases by measuring the change in the size of the pupil by irradiating light to the patient's eye and adjusting the amount of light.

On the other hand, technology for measuring the pupil size of a patient as a subject using a mobile terminal other than the above fixed type has been disclosed, but these remain in controlling the amount of light irradiated to the eyeball and measuring the change in the size of the pupil accordingly. , There is a problem with limitations in the diseases that can be screened.

In the end, there is an urgent need for a way to easily solve such a problem, and in addition, there is an increasing demand for technology that can target patients in environments or regions where access to medical services is difficult.

KR 10-1369565 B1

An object of the present invention is to provide a pupil inspection apparatus using a mobile terminal capable of irradiating light of various wavelengths to the pupil of a subject and measuring the pupil size change accordingly.

In order to solve the above problem, the present invention provides a camera, an infrared light emitting unit disposed around the camera to emit infrared light toward the pupil of the subject, which is a subject, and an inspection for emitting red light and/or blue light toward the subject. An infrared light emitting part, an infrared band pass filter positioned in front of the camera to transmit only infrared wavelengths, surrounding the infrared light emitting part, the inspection light emitting part and the infrared band pass filter, and in close contact with the eye area of the subject After the wing cover is formed so as to make a dark room around the eye of the subject, and the inspection light emitting unit irradiates light to the subject, an infrared image of the pupil of the subject is photographed using the infrared light emitting unit and the camera. It provides a pupil inspection apparatus using a mobile terminal including a control unit to control to.

According to an embodiment, in order to transmit and receive data to and from the mobile terminal, the mobile terminal further comprises a communication unit configured to communicate with the mobile terminal to enable communication, wherein the mobile terminal comprises: a pupil of the subject that changes with time from the photographed infrared image You can measure the size.

According to an embodiment, the mobile terminal calculates the change in the pupil size of the subject over time by using the infrared image photographed by the camera when the blue light is emitted from the inspection light emitting unit. , Using the change in pupil size, the average value of the intraday fluctuation and the accumulated size change over a certain period of time may be calculated, from which the glaucoma disease of the subject may be managed.

According to an embodiment, the camera is provided in the mobile terminal, and the inspection light emitting unit is located in front of one light source, and the red light band pass filter and the blue light band pass filter provided around a rotation axis rotate to rotate the light source. Including a rotating plate to be placed in front of the, the light source may be a flash for providing illumination for photographing the camera provided in the mobile terminal.

The apparatus for examining a pupil using a mobile terminal according to the present invention can irradiate light of various wavelengths to the pupil of a subject, and measure a change in pupil size accordingly.

Specifically, since it can utilize the function of retina ganglion cells that sensitively reacts to blue light to regulate pupil response, it can have an advantage in managing patients with glaucoma disease.

Further, since the apparatus for pupil examination according to an embodiment of the present invention can be implemented as a portable device, it is possible to diagnose ophthalmic diseases for patients in an environment or area where access to medical services is difficult.

1 is a block diagram of a pupil inspection apparatus using a mobile terminal according to an embodiment of the present invention.
2 is a view showing a head-mounted pupil inspection apparatus according to an embodiment of the present invention.
3 is a view showing a pupil inspection apparatus that can be mounted on a mobile terminal according to an embodiment of the present invention.
FIG. 4 is a view showing the appearance of the apparatus for examining the pupil shown in FIG. 3.
5 is a graph showing changes in pupil size measured during a predetermined period according to an embodiment of the present invention.

Hereinafter, exemplary embodiments disclosed in the present specification will be described in detail with reference to the accompanying drawings, but identical or similar elements are denoted by the same reference numerals regardless of reference numerals, and redundant descriptions thereof will be omitted. The suffixes "module" and "unit" for constituent elements used in the following description are given or used interchangeably in consideration of only the ease of preparation of the specification, and do not have meanings or roles that are distinguished from each other by themselves. In addition, in describing the embodiments disclosed in the present specification, when it is determined that a detailed description of related known technologies may obscure the subject matter of the embodiments disclosed in the present specification, the detailed description thereof will be omitted. In addition, the accompanying drawings are for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the accompanying drawings, and all changes included in the spirit and scope of the present invention It should be understood to include equivalents or substitutes.

When a component is referred to as being "connected" or "connected" to another component, it is understood that it may be directly connected or connected to the other component, but other components may exist in the middle. It should be. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it should be understood that there is no other component in the middle.

Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the present specification, terms such as "comprises" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

1 is a block diagram of a pupil inspection apparatus using a mobile terminal according to an embodiment of the present invention.

As shown in FIG. 1, the apparatus 100 for pupil examination according to an embodiment of the present invention is disposed around the camera 140 and the camera 140 to face the pupil e of the subject, which is a subject. Infrared light emitting units 110a to 110d for emitting infrared light, inspection light emitting units 120a and 120b for emitting red light and/or blue light toward the subject, and infrared rays located in the front of the camera 140 The infrared band pass filter 130 for transmitting only the wavelength, the infrared light emitting units 110a to 110d, the inspection light emitting units 120a and 120b, and the infrared band pass filter 130 are surrounded, but in close contact with the eye area of the subject After the wing cover 101 is formed so as to make a dark room around the eyes of the subject, and the inspection light emitting units 120a and 120b irradiate light to the subject, the infrared light emitting units 110a to 110d and the camera 140 Including the control unit 150 for controlling to capture an infrared image of the pupil of the subject by using, it is possible to irradiate light of various wavelengths to the pupil of the subject, and measure the pupil size change accordingly.

However, since the components shown in FIG. 1 are not essential, a pupil examination apparatus having more or fewer components than that may be implemented.

Hereinafter, each component will be described.

The camera 140 is a means for photographing a subject projected through a lens, and the camera 140 (or lens) according to an embodiment of the present invention may take an image of the pupil of the subject, which is a subject.

In order to measure the size of the subject's pupil by using the image acquired through the camera 140 according to an embodiment of the present invention, it is preferable to photograph only the pupil portion of the subject, or to take an enlarged photograph by emphasizing only the pupil portion. For example, a convex lens having a predetermined aperture and a predetermined focal length may be used so that the camera 140 can enlarge and photograph only a part of the pupil of the subject.

In order to increase the measurement accuracy when measuring the change in the size of the pupil using the pupil image of the subject acquired through the camera 140, the shooting environment of the camera 140 is preferably in a dark room with a dark surrounding. It is preferable that the subject's pupil image is an infrared image photographed using infrared illumination.

To this end, according to an embodiment of the present invention, an infrared band pass filter 130 may be disposed in front of the lens of the camera 140 so that only light of an infrared (IR) wavelength can be transmitted. In addition, the infrared light emitting units 110a to 110d may provide infrared illumination toward the pupil of the subject so that the camera 140 may acquire an infrared image of the pupil of the subject in the dark room.

The apparatus 100 for pupil examination according to an embodiment of the present invention may include one or more infrared light emitting units 110a to 110d installed toward the pupil of the subject, wherein the infrared light emitting units 110a to 110d are It may include a light emitting device such as a light emitting diode (LED) capable of emitting light having a wavelength in an infrared region out of the visible region.

As described above, the apparatus 100 for examining the pupil according to an embodiment of the present invention so that the infrared light emitting units 110a to 110d irradiate infrared rays to the pupil of the subject and the camera 140 obtains an infrared image. The infrared light emitting portion (110a ~ 110d), the inspection light emitting portion (120a, 120b), and surrounding the infrared band pass filter 130, the edge of the wing cover 101 formed to be in close contact with the eye around the subject It may include.

When the pupil examination device 100 according to an embodiment of the present invention is worn around the eye of the subject, the edge of the wing cover 101 is in close contact with the eye of the subject, so that outside light does not flow into the inside. , The inside of the wing cover 101 may be a dark room.

For this purpose, the wing cover 101 is preferably made of a silicone material having elasticity that does not cause skin irritation and changes shape easily by external force, but is not easily damaged and can be restored to its original shape, but is not particularly limited.

In addition, the control unit 150 according to an embodiment of the present invention may determine whether the shooting conditions are satisfied by forming a dark room in advance before capturing an infrared image using the camera 140. You can take a test video.

Specifically, the camera 140 photographs a test image in a state in which the inspection light emitting units 120a and 120b and the infrared light emitting units 110a to 110d do not emit light, and the controller 150 takes an image of the captured test image. By determining whether there is an inflow of light from inside or outside the image through processing, it is possible to determine whether a darkroom is formed by the wing cover 101.

If the control unit 150 determines that the darkroom is not formed by the wing cover 101, the operation of the infrared light emitting units 110a to 110d and/or the inspection light emitting units 120a, 120b is limited, and the subject It is desirable not to irradiate unnecessary light into your eyes.

Meanwhile, the inspection light emitting units 120a and 120b may emit light having a wavelength within the visible light region toward the pupil of the subject, which is a subject. In this case, the inspection light emitting units 120a and 120b may emit red and/or blue light according to the wavelength of the emitted light.

The inspection light emitting units 120a and 120b may also include light emitting devices such as LEDs (Light Emitting Diode) capable of emitting red light and/or blue light, like the infrared light emitting units 110a to 110d.

That is, the examination light emitting units 120a and 120b according to an embodiment of the present invention irradiate light having various wavelengths toward the pupil of the subject, and photograph the pupil that changes accordingly using the camera 140, It measures changes in pupils that respond to light of various wavelengths, and uses the results to diagnose or follow-up with various eye diseases compared to the prior art.

The control unit 150 is a means for controlling the overall operation of the pupil examination apparatus 100 according to an embodiment of the present invention, and can perform various operations or process various information, thereby driving various pre-stored programs. Or you can control it.

As described above, the control unit 150 drives the inspection light emitting units 120a and 120b to irradiate red light and/or blue light to the eyeball of the subject, and then, the infrared light emitting units 110a to 110d and the camera 140 By driving sequentially or simultaneously, infrared images of the subject may be obtained.

The communication unit 160 is for connecting to the mobile terminal 200 to enable direct or indirect communication via wired or wireless, and the pupil examination device 100 transmits and receives data to and from the mobile terminal 200 through the communication unit 160. I can.

Accordingly, the apparatus 100 for pupil examination according to an embodiment of the present invention transmits an infrared image photographed by the camera 140 to the mobile terminal 200 or transmits a control command from the mobile terminal 200 to the mobile terminal. In accordance with the received and received control command, the controller 150 controls the operation of the infrared light emitting units 110a to 110d, the examination light emitting units 120a and 120b, and the camera 140 to provide an infrared image of the pupil of the subject. Can be obtained.

Meanwhile, although not shown in the drawings, a power supply unit (not shown) may be included to apply or supply power required for the operation of each component in the apparatus 100 for pupil examination according to an embodiment of the present invention. .

Depending on the implementation, the power supply unit may store power and supply the stored power to each component, or otherwise receive power from an external mobile terminal 200 and transmit the power to each component.

Meanwhile, the mobile terminal 200 includes, for example, a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a personal digital assistant (PDA), a portable multimedia player (PMP), a navigation system, and a slate PC ( slate PC), tablet PC, ultrabook, wearable device. Implemented in the form of a multimedia device with complex functions, it may refer to a terminal capable of executing various programs. As long as it is implemented to perform the functions described in the present specification, the form is not particularly limited.

The mobile terminal 200 according to an embodiment of the present invention may measure the pupil size of the subject from the infrared image captured by the camera 140. A method of extracting the pupil from the infrared image by the mobile terminal 200 and measuring the size (diameter) of the extracted pupil may be by a known method, and the present invention is not particularly limited thereto. Normally, as for adults, the pupil diameter of a normal person may have a value of 2 to 4 mm in case of a light reaction and 4 to 8 mm in case of a cancer reaction.

Furthermore, the mobile terminal 200 according to an embodiment of the present invention continuously measures the pupil size of the subject that changes according to time, using a plurality of infrared images continuously or discontinuously acquired over time. The history can be tracked and managed.

In addition, the apparatus 100 for pupil examination according to an embodiment of the present invention, as described above, emits light of various wavelengths using the examination light emitting units 120a and 120b, and according to the change of the wavelength, and It is possible to continuously measure the pupil size of the subject that changes with time and track the history.

Retina ganglion cells, which make up the retina of the eye, decrease in number and function in glaucoma, and it is known that retinal ganglion cells respond sensitively to blue light to regulate pupil response.

Therefore, using the infrared image captured by the camera 140 when the inspection light emitting units 120a and 120b emit blue wavelength light, the mobile terminal 200 changes the pupil size of the subject over time. Can be calculated.

Since the apparatus 100 for pupil examination according to an embodiment of the present invention is connected to be able to communicate with the mobile terminal 200 but is portable, it is possible to continuously collect information on the change in the pupil size of the subject. . Therefore, using this, the mobile terminal 200 can store the pupil size measured for a predetermined period, as shown in FIG. 5, and determine whether the pupil size changes (Δ) for a predetermined period or calculate the amount of change. In addition, it is possible to calculate the arithmetic mean or weighted average of the pupil size for a predetermined period of time.

In particular, using an infrared image captured by a camera when blue light is emitted, as shown in Fig. 5, whether or not the subject's pupil size changes during the day, the amount of change during the day, and for a certain period For example, it is possible to calculate the average value of the cumulative size change in a number of days (3-5 days), weekly, monthly, etc., from which glaucoma disease of the subject can be managed.

On the other hand, since the mobile terminal 200 has a mobile communication module capable of transmitting and receiving data on a mobile communication network established according to technical standards or communication methods for mobile communication, or a wireless Internet module for wireless Internet access, this By transmitting the collected information on the above-described change in pupil size to a medical management server (not shown) operated or managed by a medical practitioner remotely, it is possible to enable relatively accurate remote medical treatment compared to the prior art.

First Example

The apparatus 100 for pupil examination according to an embodiment of the present invention described above is implemented in the form of a head mount that can be worn on the subject's head as shown in FIG. 2 or mounted on a mobile terminal as shown in FIG. 3. It can be implemented in the form of a possible mobile terminal mount.

FIG. 2 is a view showing a head mounted type pupil examination device according to an embodiment of the present invention. As shown in FIG. 2, the pupil examination device 100 is implemented in a form that can be worn on the subject's head. , The pupil image may be photographed using at least one camera 141 and 142 mounted on the inside toward the eyeball of the subject.

Here, the cameras 141 and 142 included in the head-mounted pupil inspection apparatus 100 may be infrared cameras that do not have a filter for removing infrared wavelengths. Reference numerals 131 and 132 shown in FIG. 2 denote infrared band pass filters for transmitting only infrared light so that the cameras 141 and 142 can acquire infrared images, and are arranged around the cameras 141 and 142 Reference numerals 111 and 112 denote an infrared light source for providing infrared illumination to obtain an infrared image in the inner darkroom formed by the wing cover 101.

In addition, reference numerals 121 and 122 shown in FIG. 2 denote a red light source for emitting red light while being installed toward the eyeball of the subject, and reference numerals 123 and 124 are installed toward the eyeball of the subject, but a blue light source for emitting blue light. Points to.

In this pupil examination device 100, cameras 141 and 142 are individually arranged for each left eye and right eye of the subject, and simultaneously measure the change in pupil size for each of the left and right eyes, and use this to measure eye disease. Can be used for management.

Of course, as described above, the pupil examination device 100 is connected to the mobile terminal 200 to enable wireless or wired communication, so that the infrared image captured by the cameras 141 and 142 is transferred to the mobile terminal 200. Transmitting or receiving a control command from the mobile terminal 200, and according to the received control command, the control unit 150 includes infrared light emitting units 110a to 110d, inspection light emitting units 120a, 120b, and camera 140 By controlling the motion of the back, it is possible to obtain an infrared image of the pupil of the subject.

Second Example

3 is a view showing an apparatus for pupil examination that can be mounted on a mobile terminal according to an embodiment of the present invention, and FIG. 4 is a view showing the appearance of the apparatus for pupil examination shown in FIG. 3, shown in FIGS. 3 and 4 As described above, a form that can be mounted on the mobile terminal 200, specifically, is implemented to be positioned in front of the camera lens provided in the mobile terminal 200, so that the pupil inspection apparatus 100 does not have a separate camera and is a mobile terminal ( 200) can be used to take a pupil image of the subject.

If the camera mounted on the mobile terminal 200 By filtering Including the lens to be removed, one of the present invention In the example The apparatus for pupil inspection that can be mounted on the mobile terminal according to the present invention includes an infrared camera that does not block the infrared wavelength, that is, a NoIR camera, and can take an image of an infrared wavelength.

As shown in Figs. 3 and 4, the apparatus 100 for pupil inspection mounted on the mobile terminal 200 includes an infrared band pass filter 130 for transmitting only infrared light in front of the lens of the camera 140. And at least one infrared light source 110a to 110d for providing infrared illumination toward the eyeball of the subject around the camera 140 may be disposed.

Typically, the mobile terminal 200 has a flash 210 that is located around the lens of the camera 140 and provides illumination of visible light for photographing by the camera 140 when the surrounding is dark. Accordingly, the apparatus 100 for pupil examination may implement the examination light emitting units 120a and 120b using the flash 210 provided in the mobile terminal 200 and the rotating plate 170 positioned in front of the flash 210.

The rotating plate 170 may have a substantially circular plate shape, which may rotate clockwise and/or counterclockwise with respect to the central rotation axis 171. At this time, the rotating plate 170 may include at least one red light band pass filter 181 and at least one blue light band pass filter 182 spaced apart from the rotation shaft 171 by a predetermined distance and installed along the circumferential direction.

As a result, as the rotating plate 170 rotates with respect to the central axis 171, any one of the red light band pass filter 181 and the blue light band pass filter 182 is in front of the flash 210 of the mobile terminal 200. When the flash 210 emits light, red light may be emitted toward the eyeball of the subject through the red light band pass filter 181, or blue light may be emitted toward the eyeball of the subject through the blue light band pass filter 182. have.

Here, the rotating plate 170 may be rotated by a driving means such as a motor driven according to a control signal, but is not limited thereto and may be rotated by a user's manual operation.

Similarly in the embodiment shown in FIG. 3, as shown in FIG. 4, surrounding the rotating plate 170 and the infrared band pass filter 130, and the camera 140 and the infrared light emitting units 110a to 110d, Is formed to be in close contact with the eye area of the subject, and may include a wing cover 101 for making the area around the eye area of the subject into a dark room.

The pupil examination apparatus 100 measures the pupil size change according to the change in the emission wavelength of the examination light emitting units 120a and 120b only for one of the left eye and the right eye of the subject and according to the change of time, This can be used to manage ophthalmic diseases.

Of course, the pupil examination apparatus 100 according to the present embodiment is connected to the mobile terminal 200 to enable wireless or wired communication, receives a control command from the mobile terminal 200, and receives a control command according to the received control command. The controller 150 may control operations of the infrared light emitting units 110a to 110d and the examination light emitting units 120a and 120b to obtain an infrared image of the pupil of the subject.

At this time, the apparatus 100 for examining the pupil according to the present embodiment, as shown in FIG. 5, further includes a hook 190 extending outwardly on one side, using the hook 190 By straddling the mobile terminal 200, the apparatus 100 for pupil examination can be easily mounted.

In the above, preferred embodiments of the present invention have been described in detail with reference to the drawings. The description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention.

Therefore, the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning, scope and equivalent concepts of the claims are included in the scope of the present invention. It must be interpreted.

100: device for pupil examination 101: wing cover
110a~110d: infrared light emitting unit 111, 112: infrared light source
120a, 120b: inspection light emitting unit 121, 122: red light source
123, 124: blue light source 130: infrared band pass filter
131, 132: infrared band pass filter 140: camera
141, 142: camera 150: control unit
160: communication unit 170: rotating plate
171: rotating shaft 181: red light band pass filter
182: blue light band pass filter 200: mobile terminal
210: flash e: subject's eye

Claims (4)

A hook over the mobile terminal;
A camera provided in the mobile terminal;
An infrared light emitting unit disposed around the camera to emit infrared light toward the pupil of the subject;
An infrared band pass filter positioned at the front of the camera to transmit only infrared wavelengths;
It is for emitting red light and/or blue light toward the subject, and is located in front of the flash provided in the mobile terminal to provide illumination, and a red light band pass filter and a blue light band pass filter provided around a rotation axis are disposed around the rotation axis. An inspection light emitting unit including a rotating plate which rotates so that one of the red light band pass filter and the blue light band pass filter is positioned in front of the flash;
A wing cover surrounding the infrared light emitting unit, the inspection light emitting unit, and the infrared band pass filter, and formed to be in close contact with the eye area of the subject to make the eye area around the subject's eye a dark room; And
After the inspection light emitting unit irradiates light to the subject, a control unit controlling to capture an infrared image of the pupil of the subject using the infrared light emitting unit and the camera;
Including,
In order to determine whether the photographing area satisfies the photographing condition by forming a dark room before photographing the infrared image using the camera, the control unit performs a test image in a state in which the infrared light emitting unit and the inspection light emitting unit do not emit light. A device for pupil examination using a mobile terminal, characterized in that it photographs and determines whether there is an inflow of external light from the test image through image processing. The method of claim 1,
A communication unit configured to communicate with the mobile terminal to transmit and receive data to and from the mobile terminal;
But further include,
The mobile terminal, a pupil inspection apparatus using a mobile terminal, characterized in that measuring the pupil size of the subject changes over time from the photographed infrared image. The method of claim 2,
The mobile terminal,
When the blue light is emitted from the inspection light-emitting unit, the change in the pupil size of the subject over time is calculated using the infrared image photographed by the camera, and whether or not there is intraday change using the change in the pupil size. And calculating an average value of the accumulated size change over a period of time, and managing glaucoma disease of the subject from this. delete

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