KR20190036394A - Fundus photography system using infrared pre-illumination - Google Patents

Abstract

The present invention relates to a fundus photography system using an infrared pre-lighting that replaced a pre-lighting required for focusing a digital camera for photographing a fundus with an infrared ray that cannot be detected by a human body, instead of visible light for causing glare, thereby improving patient convenience and practicality of screening and, more particularly, capable of photographing without restriction of time and place through a mobile terminal having a photographing function.

Description

{Fundus photography system using infrared pre-illumination}

The present invention relates to an fundus photographing system, and in particular, it relates to a fundus photographing system in which a pre-illumination necessary for focusing a digital camera for photographing a fundus is replaced with an infrared ray not detectable by a human body, And more particularly, to an eye fundus photographing system using infra-red pre-illumination capable of photographing without restriction of time and place through a portable terminal capable of improving practicality of the examination.

The fundus is a part of the eye that looks inside the eye through the pupil and is composed of the retina and retinal vessels, the optic nerve head, and the choroid (choroid)黄斑) and the optic nerve head, including the posterior pole (equatorial part), the equatorial part, is divided into the periphery.

Each of these tissues is in a functional and anatomically close relationship and in a pathological condition that has a mutually influential relationship.

The fundus examination includes bleeding, exudates, turbidity, degeneration, proliferative tissue, and changes in the blood vessels themselves. The detailed examination is indispensable for diagnosis and treatment. As a direct examination of the fundus, There are direct image mirrors, observer mirrors, and funduscopic imaging.

In recent years, digital cameras have been incorporated into almost all smart phones since early 2010, replacing existing film cameras with the technology of electronically digitizing optical signals using charge coupled device (CCD) image sensors.

In using this digital camera for fundus photography, a digital camera usually implements a focusing process in order to obtain a clear image before receiving data values from the image sensor, and a minimum light that can distinguish the object in order to focus However, in the funduscopic photographing of the inside of the patient's retina, when the light is supplied with such a minimum light, the patient feels glare and the iris is closed due to a lot of light in the diagnosis process.

As a result, it has been considered to apply infrared rays without any glare as a preliminary light. However, it is inconvenient for the time and place restrictions for the fundus photography because it is not possible to carry or carry a photographing device capable of focusing through infrared rays at home There was no.

Published Japanese Patent Application No. 10-1999-0075162 (Oct. 15, 1999)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and an object of the present invention is to provide an apparatus and a method for detecting iris glare, which is a disadvantage of a conventional visible light ray, And an infrared fundus photographing system using the infrared ray pre-illumination capable of preventing an inconvenience.

Another object of the present invention is to provide an eye fundus photographing system using infrared pre-illumination that can be easily combined with accurate fundus photographing without restriction of time and place as it can be combined with a terminal having a digital photographing function.

According to another aspect of the present invention, there is provided an eye fundus photographing system including: a terminal having a CCD, a backside camera, and illumination, and performing an imaging operation by implementing an auto focus algorithm of an image projected on the camera; A main module having a fixing part formed on both sides of the terminal so as to surround the side of the terminal from the backside and being detachable to the backside of the terminal and having a first main penetrating part for exposing the camera and the illumination to the back side; A first space formed at a position corresponding to the illumination and having a first auxiliary penetration portion for discharging light emitted from the illumination to the backside; an infrared lamp; a power source for supplying power to the infrared lamp; And a second main penetration portion communicating with the first main penetration portion so that the camera is exposed at the back surface, and a second main penetration portion communicating with the middle module, which is coupled to the back surface of the main module, ; A cylindrical lens module having a focusing lens, an eyepiece which is in contact with a user's eye on the rear surface, and a light output portion that emits the applied light toward a user's eye, the lens module being connected to the second main penetrating portion, ; A first optical fiber unit for transmitting light emitted from the first space to the optical output unit and a second optical fiber unit for transmitting infrared rays emitted from the second space to the optical output unit; .

The light transmitting portion includes a hollow connector coupled to the first space and the second space outside and two points outside the lens module, a connector at a location outside the first space, And an optical fiber cable connecting the outside of the second space and the connector at another point of the lens module, respectively.

In addition, a protrusion protruding along the second main penetration portion is formed on the front surface of the middle module, a receiving portion for receiving and supporting the protrusion on the back surface of the main module, It is preferable that a tuck is formed.

In addition, a coupling protrusion is formed on a front surface of the lens module, and an engaging groove is formed on a rear surface of the middle module so that the coupling protrusion can be inserted and supported.

By using the pre-illumination of the IR (infrared) wavelength which can not be detected by the human body but can be detected by various digital cameras, the present invention can prevent dramatically the iris closing phenomenon .

Especially, digital camera installed in various personal terminals including mobile phone can be used, so it can be taken easily because there is no restriction on time and place, and it is transmitted to the medical staff, so that the medical service can be provided even in a place where activation of remote medical treatment and access to medical facilities is inadequate .

1 is a perspective view of a preferred embodiment of the present invention,
2 is an exploded perspective view according to a preferred embodiment of the present invention,
3 is a partial perspective view showing a structure of a main module according to the present invention,
4 is a partial perspective view showing a structure of a middle module in the present invention,
5 is a partial perspective view showing the structure of a lens module according to the present invention.
6 is a cross-sectional view showing a structure of a lens module according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the configuration of an eye fundus photographing system using infrared pre-illumination according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a preferred embodiment of the present invention, FIG. 2 is an exploded perspective view according to a preferred embodiment of the present invention, The middle module 3, the lens module 4, and the light transmitting portion 5 in the configuration for photographing the user's fundus.

The terminal 1 is a smart phone or a tablet PC as a typical terminal including a camera 11 on the back and a light source such as a CCD for digital photographing. In such a terminal 1, an auto-focus algorithm of an image projected on the camera 11 is basically implemented, and a high-resolution image can be obtained through close-up photography within a certain range. Since the configuration of such a terminal can utilize various products already sold on the market, a detailed description thereof will be omitted in order to prevent blurring of the gist of the present invention.

Fig. 3 is a partial perspective view showing the structure of the main module in the present invention, and Figs. 3 (a) and 3 (b) show the front and rear views of the main module 2, respectively.

The main module 2 is connected to the back surface of the terminal 1 to connect the configuration of the present invention for fundus photographing. The main module 2 has a fixing part (not shown) on both sides of the terminal 1, 21 are formed on the rear surface of the terminal 1 and are detachable.

The fixing part 21 is formed on the upper part of the terminal 1, that is, on the part where the camera 11 and the illuminating part are formed, and covers the side and upper part of the terminal 1, (Not shown).

The main module 2 is formed with a first main penetration portion 22 for exposing the camera 11 and the illumination 12 provided on the rear surface of the terminal 1 with a back surface. The first terminal main body 1 may be provided with one first main penetration portion for exposing the camera 11 and the illumination 12 in close proximity to the back surface thereof, The first main penetration portion may be formed.

Fig. 4 is a partial perspective view showing the structure of the middle module in the present invention, and Figs. 4 (a) and 4 (b) show the front and rear views of the middle module 3, respectively.

The middle module 3 is coupled to the back surface of the main module 2. The middle module 3 has a second main penetration part 22 communicating with the first main penetration part 22, 33, and a first space 31 and a second space 32 for visible light illumination and infrared light illumination are formed, respectively.

The first space 31 is formed at a position corresponding to the illumination 12 in contact with the first main penetrating portion 22 and is provided with a first auxiliary penetration for discharging light emitted from the illumination 12 to the back surface A portion 311 is formed.

An infrared lamp 321 which is not recognized by a human eye but emits infrared rays of a wavelength that can be sensed by the camera 11 of the terminal 1, A power supply unit 322 for supplying power and a second auxiliary penetration unit 323 for discharging the light emitted from the infrared lamp 321 to the backside are formed. At this time, the power source unit 322 includes a small-sized battery and a switch for lighting the infrared lamp 321.

FIG. 5 is a partial perspective view showing the structure of a lens module according to the present invention, and FIG. 6 is a sectional view showing the structure of a lens module according to the present invention.

The lens module 4 is a tubular structure that communicates with the back side of the middle module 3 through the second main penetration part 33 and the photographing range of the camera 11. A focusing lens 41 having an appropriate magnification on the inside and an eyepiece 42 contacting the eyes of the user on the back face are provided for smooth funduscopic imaging, and in particular, from the first space 31 and the second space 32 And a light output unit 43 for emitting light toward the user's eyes.

In the present invention, visible light and ultraviolet light are respectively received from the first space 31 and the second space 32 of the middle module 3 through the optical transmission unit 5 capable of transmitting light, The optical transmission unit 5 includes a first optical fiber unit 51 for transmitting light emitted from the first space 31 to the optical output unit 43, And a second optical fiber unit 52 for transmitting infrared rays emitted from the second space 32 to the optical output unit 43.

The light transmitting portion 5 includes hollow connectors 511 and 511 coupled to the outside of the first space 31 and the second space 32 and outside the two points of the lens module 4, An optical fiber cable 512 connecting a connector 511 coupled to the outside of the first space 31 and a connector 521 at one point of the lens module, And an optical fiber cable 522 connecting a connector 511 'coupled to the outside of the lens module 4 and a connector 521' at another point of the lens module 4, The ends of the optical island view cables 512 and 522 which have passed through the connectors 511 'and 521' are connected to the light output part 43 configured to emit light toward the user's eyes.

As described above, according to the present invention, when the terminal 1 is connected to the terminal 1 having a photographing function through the main module 2, the main module 2, And it is necessary to replace them as necessary. In other words, in the case of the middle module 3 and the lens module 4, the main module 2 is manufactured in a predetermined standard, but the main module 2 is configured to be detachable according to the standard of the main terminal 1 on the market, .

The main module 2 and the middle module 3 are configured to be detachable so that a protrusion 35 protruding along the second main penetration 33 is formed on the front surface of the middle module 3 A receiving part 23 for receiving and supporting the projecting part 35 and a supporting step 24 for supporting the upper, lower, left and right sides of the middle module 3 are formed on the rear surface of the main module 2 Do.

A coupling protrusion 44 is formed on the front surface of the lens module 4 so that the lens module 4 and the middle module 3 can be separated as required. On the rear surface of the middle module 3, And an engaging groove 34 into which the engaging projection 44 can be inserted and supported is formed.

In the configuration of the present invention, first, the switch of the power source unit 322 is operated to contact the eye of the user with the eyepiece 42 in a state in which the infrared rays of the pre-illumination are emitted through the optical output unit 43, So that the user can perform accurate focusing without glare or pupil reduction. Further, the fundus photographing can be performed smoothly by utilizing the illumination 12 instantaneously in the subsequent photographing.

It is to be understood that the invention is not limited to the disclosed embodiment, but is capable of many modifications and variations within the scope of the appended claims. It is self-evident.

1: Terminal 11: Camera
12: Lighting 2: Main module
21: fixing part 22: first main penetration part
23: receptacle 24: support jaw
3: middle module 31: first space
311: first auxiliary penetration part 32: second space
321: Infrared lamp 322: Power source
323: second auxiliary penetration part 33: second main penetration part
34: engaging groove 35:
4: Lens module 41: Focusing lens
42: eyepiece 43: light output section
44: engaging projection 5: light transmitting portion
51: first optical fiber part 52: second optical fiber part
511, 521: connectors 512, 522: optical fiber cable

Claims (4)

In the fundus photographing system,
A terminal (1) having a CCD (11), a camera (11) on the back, and an illumination (12), in which an automatic focusing algorithm of an image projected on the camera (11)
The camera 11 and the illumination 12 are mounted on the back surface of the terminal 1 so that the camera 11 and the illumination 12 can be separated from the back surface of the terminal 1, A main module 2 having a first main penetration part 22 for exposing the first main penetration part 22;
A first space 31 formed at a position corresponding to the illumination 12 and having a first auxiliary penetration part 311 for discharging the light emitted from the illumination 12 to the back surface, an infrared lamp 321, A second space 32 formed with a power supply unit 322 for supplying power to the infrared lamp 321 and a second auxiliary penetration unit 323 for discharging light emitted from the infrared lamp 321 to the backside, A middle module 3 having a second main penetration part 33 communicating with the first main penetration part 22 so as to expose the camera 11 to the backside and being coupled to the back surface of the main module 2;
An eyepiece 42 which is in communication with the second main penetrating portion 33 and is in contact with the user's eye with the rear surface of the focusing lens 41, A cylindrical lens module 4 having an output section 43;
A first optical fiber unit 51 for transmitting light emitted from the first space 31 to the optical output unit 43 and a second optical fiber unit 51 for transmitting infrared rays emitted from the second space 32 to the optical output unit 43, And a second optical fiber unit (52) for transmitting the second optical fiber unit (52). And an infrared fundus photographing system using infrared pre-illumination.
The method according to claim 1,
The light transmitting portion 5 includes hollow connectors 511, 511 ', and 521 (not shown) coupled to the outside of the first space 31 and the second space 32 and to the outside of two points of the lens module 4, 521 of the lens module 4 and the outer side of the first space 31 and the connectors 511, 521 of the lens module 4 and the outer side of the second space 32, And optical fiber cables (512, 522) connecting the connectors (511 ', 521') at different points, respectively.
The method according to claim 1,
A protrusion 35 protruding along the second main through-hole 33 is formed on the front surface of the middle module 3,
The main module 2 is provided with a receiving portion 23 for receiving and supporting the protrusion 35 and a supporting protrusion 24 for supporting upper, lower, left and right sides of the middle module 3. [ Angiography system using infrared pre-illumination.
The method according to claim 1,
A coupling protrusion 44 is formed on the front surface of the lens module 4,
And an engaging groove (34) is formed in the rear surface of the middle module (3) so that the engaging projection (44) can be inserted and supported.

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