KR101775639B1 - Apparatus for Analyzing Lipid Layer in Tear Film - Google Patents

Abstract

The present invention relates to a device for analyzing a lipid layer in a tear film. More specifically, the present invention relates to a device for analyzing a lipid layer in a tear film, which irradiates a cornea with light emitted from a panel type light emitting part, captures an interference pattern image generated by reflection or scattering on the lipid layer in the tear film of a cornea surface, and analyzes the thickness of the lipid layer in the tear film of the cornea surface by analyzing a color in the captured interference pattern image. According to the present invention, the device for analyzing the lipid layer in the tear film comprises: the surface light emitting part irradiating an eyeball with light; a camera part capturing the interference pattern image generated from the lipid layer in the tear film of the eyeball by the light of the surface light emitting part; and a lipid layer analyzing part analyzing the thickness of the lipid layer of the tear film according to the color in the interference pattern image.

Description

{Apparatus for Analyzing Lipid Layer in Tear Film}

The present invention relates to a tear film oil layer analyzing apparatus, and more particularly, to a tear film oil layer analyzing apparatus that irradiates light emitted from a panel type lighting device to a cornea, The present invention relates to a device for analyzing the thickness of an oil layer existing in a tear film on the surface of a cornea by photographing an image and analyzing color in the captured interference fringe image.

Fig. 1 is a diagram illustrating the structure of an eyeball.

Referring to FIG. 1, a tear film 20, a cornea 30, a pupil 40, an iris 50, and a shape muscle 60, which are present on the surface of the cornea, , And a lens 70 are present.

The cornea 30 is composed of an epithelial layer, Bowman's membrane, parenchyma, descemet's membrane, and endothelial layer, and a tear film 20 is present on the surface of the cornea.

Tear (Lacrimal fluid) is wetting the cornea to lubricate and supply oxygen and nutrients to the cornea. In addition, tears can prevent infection by cleaning and antibacterial action of foreign substances, and provide a smooth and transparent optical surface to the cornea to ensure good vision. These tears are weakly alkaline at pH 7.4 and are an isotonic solution of 0.9% sodium chloride (NaCl). The major component is 98.2% water, protein, lipid, mineral and mucin.

The tear film 20 is a liquid layer that is thinly spread on the surface of the cornea, that is, the corneal epithelial cell layer, and consists of the oil layer 21, the aqueous layer 22, and the mucous layer 23.

The lipid layer (21) is the outermost layer of the tear film. It is composed of various kinds of lipids. The oil is secreted from the Meibomian grand. Lipid means an organic compound having properties such as oil or wax, and various lipids constituting the oil layer are wax ester, cholesterol ester, phospholipid, fatty acid, sterol and the like. This oil layer prevents the evaporation of the aqueous layer to maintain the tear film, lubrication between the cornea and the eyelid, and prevents friction.

When the tears evaporate when the eyes are opened, the surface of the cornea will dry, and the corneal epithelium and the tears in the conjunctiva are concentrated, and the difference in the concentration causes the cornea to absorb water.

Dry eye syndrome is one of the most common ophthalmologic diseases, and it is a disease that feels stiffness, foreign body sensation, discomfort, and dizziness. Dry eye syndrome is classified as dry eye syndrome (tear-free dry eye syndrome), tear is normally secreted, but tear is caused by excessive evaporation (dry eye syndrome). In the case of dry eye with evaporation type dry eye syndrome, the oily layer is thin because oily secretion is not well done in my spring spring, and ocular dryness is caused by excessive evaporation of tears. Therefore, taking an oily layer of the tear film and measuring the thickness is a very important test for diagnosing and diagnosing dry eye syndrome, and for determining the treatment method.

Korean Patent Application No. 10-2003-0013775 discloses a Meyer pattern for measuring an accurate curvature of a subject's cornea by easily grasping the exact center of a Meyer pattern formed on an eye cornea of a subject and a method of measuring the corneal curvature using the Meyer pattern .

However, the prior art can only measure the curvature of the cornea and can not measure the thickness of the tear film or the thickness of the oil layer present on the surface of the cornea. A technique is needed to accurately measure the thickness of the tear film layer in diagnosing and diagnosing dry eye syndrome and determining the treatment method.

SUMMARY OF THE INVENTION A problem to be solved by the present invention is to irradiate light emitted from a planar light emitting portion to a cornea, to capture an interference fringe image generated by reflection from a tear film oil layer, and to analyze the color of an interference fringe And a device for analyzing the thickness of the oil layer present in the corneal tear film.

Another object of the present invention is to provide an image pickup apparatus and an image pickup apparatus which are capable of moving the camera section and the surface light emitting section together in the X, Y and Z directions, And to provide a device capable of obtaining a pattern shape.

According to an aspect of the present invention, there is provided a light emitting device comprising: a planar light emitting unit for emitting light to an eyeball; A camera unit for photographing an interference fringe image generated in the tear film oil layer of the eye by the light of the surface light emitting unit; And an oil layer analyzer for analyzing the thickness of the tear film oil layer according to the color of the interference fringe image.

Preferably, the planar light emitting portion includes a flat support portion; A plurality of light emitting diodes arranged on the support portion; And a flat light diffusing plate disposed over the plurality of light emitting diodes.

Preferably, the light diffusing plate may include a white acrylic plate.

Preferably, the light diffusing plate includes an upper acrylic plate on which lower unevenness is formed and a lower acrylic plate on which upper unevenness is formed to be engaged with the lower unevenness, and the upper acrylic plate and lower acrylic include a light diffusing agent, The light diffusing plate may have a light diffusivity exceeding 70% and a haze value exceeding 99%.

Preferably, the light diffusing agent may comprise organic particles, inorganic particles and hollow particles.

Preferably, a space of 5 mm to 15 mm may be further provided between the light diffusion plate and the plurality of light emitting diodes.

Preferably, a dimmer capable of adjusting a color temperature and a brightness may further be connected to the planar light emitting portion.

Preferably, the display device may further include a transport unit for moving the planar light emitting unit and the camera unit in the forward, backward, left, right, up and down directions.

Preferably, the transfer unit includes a first direction transfer table for transferring the planar light emitting unit and the camera unit in a first direction; A second direction transfer table for transferring the first direction transfer table in a second direction perpendicular to the first direction; And a third direction transfer table for transferring the second direction transfer table in a third direction perpendicular to the first direction and the second direction.

Preferably, the first directional transfer table is coupled onto a first directional transfer rail provided on the second directional transfer table, and the second directional transfer table is coupled onto a second directional transfer rail installed on the third directional transfer table And the third direction transfer table can be coupled to the third direction transfer lead screw.

Preferably, the oil layer analyzer may acquire the color of the tear film oil layer of the eyeball by acquiring the color of the captured interference fringe image and comparing the obtained color with the color distribution table of each thickness.

According to the present invention, the cornea is irradiated with light emitted from the planar light emitting portion, the interference pattern generated by interference between the light reflected at the interface between the air and the oil layer and the light reflected at the interface between the oil layer and the aqueous layer is photographed, The thickness of the oil layer in the corneal tear film can be quantitatively analyzed by analyzing the color of the interference pattern on the image.

Further, according to the present invention, since the camera portion and the area light emitting portion are provided on the conveying portion of the cavity which can move in the X, Y and Z directions, the center of the irradiation region by the area light emitting portion always coincides with the image center of the camera portion, The thickness of the oil layer can be accurately analyzed.

Fig. 1 is a diagram illustrating the structure of an eyeball.
FIG. 2A is a side view showing a mechanical structure of a tear film oil layer analyzer according to an embodiment of the present invention, and FIG. 2B is a schematic view showing an electrical / optical structure.
3B is a side view showing a planar light emitting unit, and FIG. 3C is a plan view of a light emitting diode of a planar light emitting unit according to an embodiment of the present invention. And FIG. 3D is a cross-sectional view showing an example of a light diffusion plate.
FIG. 4 is a schematic view showing a transferring part of an oil layer analyzer of a tear film according to an embodiment of the present invention.
FIG. 5 is a block diagram showing an oil layer analyzer in an oil layer analyzer of a tear film according to an embodiment of the present invention.
6 is a photograph showing an eye image taken by an oil layer analyzer of a tear film according to an embodiment of the present invention.

The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprising" or "having ", and the like, are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

In the present invention, the light emitted from the planar light emitting portion is irradiated to the cornea, the interference pattern generated by the light reflected at the interface between the air and the oil layer and the light reflected at the interface between the oil layer and the aqueous layer is photographed, The present invention relates to a device for quantitatively analyzing a change in thickness of an oil layer present in a corneal tear film according to time by analyzing the color of an interference fringe in an image. Further, since the camera and the plane light emitting portion are provided on the conveying portion of the cavity which can move in the X, Y and Z directions, the center of the irradiation region by the plane light emitting portion always coincides with the center of the image of the camera portion, So that the thickness of the oil layer can be accurately analyzed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Like reference symbols in the drawings denote like elements.

FIG. 2A is a side view showing a mechanical structure of an apparatus 100 for analyzing oil layers of a tear film according to an embodiment of the present invention, and FIG. 2B is a schematic view showing an electrical / optical structure.

2A and 2B, an apparatus 100 for analyzing an oil layer of a tear film according to the present invention includes a tear film analyzer 100 arranged opposite to a subject 10 to detect an image of a conjunctiva of the subject 10, A field emission unit 120 for providing light to the subject 10, a magnification control unit 130 for controlling an image magnification of the subject 10, A camera unit 150 for capturing an eye image distributed by the beam splitter 140, a lens unit 110, a planar light emitting unit 120, And a camera unit 150 are integrally transported in X, Y, and Z directions.

Here, the transfer unit 160 can transfer the lens unit 110, the planar light emitting unit 120, the camera unit 150, and the like integrally in the X, Y, and Z directions, And the center of the irradiated image by the surface light emitting unit 120 are made to coincide with each other at all times, so that the camera unit 150 can obtain an optimum subject image. Further, light may be irradiated to the subject 10 in various directions and angles in accordance with the rotation of the reflecting mirror 103.

When the subject faces the forehead attaching portion 101 and the shoulder attaching portion 102 respectively by the user's forehead and jaw, the examiner uses the conveying portion 160 to irradiate the cornea 20 of the eye 10 of the examinee with light, The camera unit 150, and the planar light emitting unit 120 to adjust the position of the eyeball image of the subject to be centered on the screen.

The surface light emitting unit 120 may be configured to emit light to the subject 10 through the reflector 103. The light emitted from the surface light emitting unit 120 may be directly incident on the subject 10 by adjusting the angle of the surface light emitting unit 120, It should be understood that the present invention is not limited thereto.

The configuration of the lens unit 110, the magnification control unit 130, the beam splitter 140, the camera unit 150, the reflector 103 and the like uses the configuration adopted in general slit- A detailed description thereof will be omitted.

The light emitting unit 120 and the transfer unit 160 of the tear film oil layer analyzer 100 according to the present invention are attached to a slit lamp microscope for ophthalmology which is widely used in an ophthalmologic hospital, It is a device that can observe and analyze the oil layer of the membrane.

Particularly, in the present invention, a planar light emitting portion 120 is used as a light emitting body rather than a point or a line light emitting portion, and a dimmer 121 is provided in the planar light emitting portion 120 so that the color temperature and brightness of the planar light emitting portion 120 can be adjusted . Of course, the power supply unit 122 is connected to the dimmer 121. The present invention further includes a transfer unit 160 capable of transferring the lens unit 110, the planar light emitting unit 120, the camera unit 150, and the like in the X, Y, and Z directions. Furthermore, in the present invention, the thickness of the oil layer is measured and analyzed by the oil layer analyzer 170 from the oil layer image of the eye taken by the camera unit 150.

3A is a photograph showing the planar light emitting unit 120 and the dimmer 121 in the apparatus 100 for analyzing the oil layer of the tear film according to the embodiment of the present invention and Figure 3B is a side view showing the planar light emitting unit 120 FIG. 3C is a plan view showing a plurality of light emitting diodes 124 and a light diffusion plate 125 in the planar light emitting unit 120, and FIG. 3D is a cross-sectional view illustrating an example of the light diffusion plate 125.

3A, the planar light emitting portion 120 is formed in a substantially rectangular parallelepiped shape to provide a white light. The planar light emitting portion 120 is provided with a dimmer 121 so that the color temperature and brightness can be adjusted. . Accordingly, the inspector adjusts the color temperature and / or brightness of the planar light emitting unit 120 using the dimmer 121 according to circumstances, thereby obtaining an optimal eyeball image.

3B and 3C, the planar light emitting portion 120 includes a support portion 123, a plurality of light emitting diodes 124 arranged on the support portion 123, and a plurality of light emitting diodes 124 disposed on the light emitting diodes 124, And a light diffusion plate 125.

The support 123 is in the form of a substantially flat rectangular plate, which includes four side walls 123a projecting upwardly from the perimeter.

The plurality of light emitting diodes 124 are arranged in a rectangular area defined by the supporting part 123 and the side wall 123a, which are arranged as closely as possible in a matrix form. The plurality of light emitting diodes 124 may be arranged with a pitch of approximately 100 mm to 10000 mm.

The light diffusing plate 125 is disposed on the plurality of light emitting diodes 124, which is in the form of a substantially flat rectangular plate. Particularly, the light diffusion plate 125 is coupled to the side wall 123a with a predetermined distance from the plurality of light emitting diodes 124, so that a gap between the light diffusion plate 125 and the plurality of light emitting diodes 124 is approximately 5 mm To 15 mm. The spatial part 126 makes the brightness of the light diffusion plate 125 of the planar light emitting part 120 uniform, and improves the light diffusivity and the haze value. For example, if the spacing distance between the light diffusion plate 125 and the light emitting diode 124 is too close, the brightness of the light diffusion plate 125 may become uneven and the light diffusion rate and the haze value may decrease .

On the other hand, the light diffusion plate 125 may include a white acrylic plate having a thickness of approximately 1 mm to 4 mm. Such a white acrylic plate basically has excellent light diffusivity and haze value by refracting and diffracting light in various directions.

For example, the planar light emitting unit 120 manufactured in the present invention has a light emitting diode 124 having a width of 60 mm × 120 mm, a space distance 126 of 10 mm, and a thickness of 2 mm, The color temperature of the planar light emitting unit 120 was 6500 K, and the maximum power (when the brightness was maximized) was 22 W. In addition,

3D, the optical diffusing plate 125 may include an upper acrylic plate 127 having a lower unevenness 127a and a lower acrylic plate 127 having upper unevenness 128a to be engaged with the lower unevenness 127a, The upper acrylic plate 127 and the lower acrylic may further include a light diffusing agent 129 on one side thereof.

Here, the pitch of the concavities and convexities 127a and 128a is preferably within a range of approximately 50 mu m to 3000 mm. More preferably, the pitch of the projections and depressions 127a and 128a is preferably in the range of approximately 0.5 to 3,000 mm, more preferably approximately 1 to 1,000 mm, in which mechanical properties such as durability and warpage and processability are improved. In particular, when the pitches of the concavities and convexities 127a and 128a are approximately 50 μm to 500 μm, mechanical properties and luminance uniformity are improved at the same time. The height of the concavities and convexities 127a and 128a is not particularly limited, but is preferably about 1 to 80% of the thickness of the upper acrylic plate 127 and the lower acrylic plate 128.

In addition, the projections and depressions 127a and 128a may be a prism shape, a triangle shape, a pyramid shape, a trapezoid shape, a lenticular shape, a microlens shape, or a random shape. Air may be interposed between the upper acrylic plate 127 and the lower acrylic plate 128, or an adhesive may be interposed therebetween.

In addition, the light diffusing agent 129 may comprise organic particles 129a, inorganic particles 129b and / or hollow particles (not shown). Specifically, the organic or inorganic particles may be selected from the group consisting of silicone, acrylic, styrene, methacrylate methyl styrene copolymer, polycarbonate, olefin crosslinked or uncrosslinked fine particles, silica, talc, calcium carbonate, barium sulfate, titanium dioxide Can be used. The hollow particles are preferably composed of a silicon compound containing air or a vacuum and specifically include siloxane compounds such as silica, glass and silicon and silane compounds such as chlorosilane, alkoxysilane, aminosilane and fluoroalkylsilane , Especially silica or glass. The hollow particles described above can exhibit a high light diffusivity and a total light transmittance even in a small amount, and can solve the problems of durability and heat resistance of the planar light emitting portion 120. The organic particles 129a, the inorganic particles 129b, and the hollow particles may have a particle size of about 1 占 퐉 to 100 占 퐉.

The upper acrylic plate 127 and the lower acrylic plate 128 may contain an ultraviolet absorber, a light stabilizer, an antioxidant, an antioxidant, an antioxidant, , An antistatic agent, a fluorescent whitening agent, an antistatic agent, and the like, so that discoloration and durability do not deteriorate even after a long period of time.

In addition, since the upper acrylic plate 127 is further provided with a plurality of prism-shaped condensing layers 127b on its upper surface, not only the luminance becomes more uniform, but also the light diffusivity and haze can be further improved.

In this way, the light diffusing rate of the planar light emitting part 120 according to the present invention to the light diffusion plate 125 may exceed approximately 70% and the haze value may exceed approximately 99% A high-quality eye image can be obtained. Here, the light diffusivity may be a value measured using a goniometer (GC-5000L, Nippon Denshoku), and the haze value may be a value measured using a haze meter (HRM-150, Murakami).

FIG. 4 is a schematic view showing a transfer unit 160 in an apparatus 100 for analyzing oil layers of a tear film according to an embodiment of the present invention.

4, the transfer unit 160 includes a first direction transfer table 161, a second direction transfer table 162, and a third direction transfer table 163.

The lens unit 110, the beam splitter 140, the camera unit 150 and the planar light emitting unit 120 are connected to the first directional transfer table 161 by a link 106 so that X Direction. The second direction transfer table 162 transfers the first direction transfer table 161 in a second direction perpendicular to the first direction, for example, the Y direction. The third direction transfer table 163 transfers the second direction transfer table 162 in a third direction perpendicular to the first and second directions, for example, the Z direction. Therefore, the lens unit 110, the camera unit 150, and the planar light emitting unit 120 can be integrally transferred / moved in the first, second, and third directions, e.g., X, Y, and Z directions.

More specifically, the first direction transfer table 161 is coupled to the first direction transferring rail 162a provided on the second direction transfer table 162, so that the first direction transferring table 161 is moved along the first direction transferring rail 162a, For example, it can be transported in the X direction. The second directional transfer table 162 is coupled to the second directional transferring rail 163a provided on the third directional transfer table 163 so that the second directional transferring table 162 is moved along the second directional transferring rail 163a, Lt; / RTI > The third direction transfer table 163 is coupled to the third direction transfer lead screw 164a so that it can be transferred in the Z direction, for example, in accordance with the rotation of the third direction transfer lead screw 164a. Here, the third direction transfer table 163 may be installed in a third direction transferring rail (not shown) vertically installed instead of the third direction transferring lead screw, and may be transferred / moved in the Z direction.

The first, second, and third transfer tables 161, 162, and 163 may be manually moved by an inspector / user or automatically moved by a separate electric motor or cylinder. In Fig. 4, for example, the third direction feeding lead screw 164a is coupled to the electric motor 164b by a belt 164c and is rotated.

Thus, according to the present invention, since the camera unit 150 and the planar light emitting unit 120 are installed on the cavity transferring unit 160 which can move in the X, Y and Z directions, the image center of the camera unit 150 The center of the irradiated area by the area light emitting part 120 is always matched with the area of the oil layer 120. Therefore, an optimum interference fringe shape can be obtained and the thickness of the oil layer can be analyzed accurately.

5 is a block diagram showing an oil layer analyzer 170 in an apparatus 100 for analyzing oil layers of a tear film according to an embodiment of the present invention.

5, the oil layer analysis unit 170 includes a color analysis unit 171, a comparison analysis unit 172, a thickness acquisition unit 173, a comparison storage unit 174, a quantification analysis unit 175, . ≪ / RTI >

The color analyzer 171 analyzes the pixels of the interference fringe image generated in the tear film oil layer to acquire color information. By analyzing the color values with respect to the pixels of the interference fringe image, it is possible to obtain the color values in each part. Of course, the color value may be analyzed for each pixel of the interference fringe image, but the interference fringing image may be divided into the analysis area having a predetermined confined area, and the average color value in the divided analysis area may be obtained.

The comparative analysis unit 172 compares the color value of each pixel in the interference fringe image acquired by the color analysis unit 171 or the average color value in the analysis area to the table storage unit 1741 of the comparison storage unit 174 And obtains data that matches the color value or the average color value in the interference fringe image.

An example of the correspondence relationship between the color distribution and the oil layer thickness in the interference fringing image generated in the oil layer is as follows. : (10) White (estimated lipid layer thickness 30 nm), (20) Gray / white (45 nm), (3) Gray (60 nm), (4) Gray / 6) Yellow / brown (105nm), 7) Brown / yellow (120nm), (8) Brown (135nm), (9) Brown / blue (150nm) ) Blue (180 nm).

The relationship between the color distribution and the oil layer thickness is not limited to the above example, and can be appropriately adjusted according to the individual age, sex, race, body weight, and the like.

The thickness obtaining unit 173 analyzes the obtained matching data to obtain information on the tear film oil layer thickness in each part of the cornea, and stores the obtained information in the history storing unit 1742 of the comparison storing unit 174 .

Of course, since the interference fringe image may be a continuous still image or a moving image photographed according to time order, the color analysis unit 171, the comparative analysis unit 172, and the thickness obtaining unit 173 may calculate the thickness of the tear film oil layer The information on the thickness of the tear film oil layer can be acquired for each time and for each position of the cornea by acquiring the change of color according to the time change in the interference fringe image in the tear film oil layer by analyzing the interference fringe image of the tear film oil layer.

The quantification analysis unit 175 analyzes the change in the thickness of the tear film oil layer obtained at each time and at each position, thereby determining the thickness of the tear film oil layer at each position of the cornea, the thickness change with time, and the blinking moment Quantitative information on the thickness variation of the tear film oil layer at each position of the cornea can be obtained before and after.

Of course, the quantification analysis unit 175 compares the history data recorded in the past with the current data analyzed according to the currently captured interference fringe image for each subject, thereby not only short time blinking but also long-term tear film oil layer Can be obtained.

Also, the quantification analyzer 175 may analyze and convert the information about the thickness change of the tear film oil layer obtained at each time to generate a graph image of the thickness change of the tear film oil layer with time. By displaying the time variation on the x-axis and the oil layer thickness on the y-axis in the graphical image, the inspector can intuitively perceive the change in oil layer thickness.

The comparison storage unit 174 stores test data of each subject and includes a table storage unit 1741 and a history storage unit 1742.

The table storage unit 1741 stores a color distribution table for each thickness corresponding to the color distribution of the interference pattern and the thickness of the tear film oil layer. The history storage unit 1742 stores the color distribution table for each thickness of the interference pattern image And result data according to past and present inspections. The result data according to the inspection means information obtained by analyzing the interference fringe image and quantified by the time and position of the thickness of the tear film oil layer obtained.

6 is a photograph showing an eye image taken by an oil layer analyzer of a tear film according to an embodiment of the present invention.

As shown in FIG. 6, according to the eye image photographed by the present invention, light emitted from the planar light emitting portion is irradiated to the eyeball, whereby light reflected at the interface between the air and the oil layer and light reflected at the interface between the oil layer and the aqueous layer An interference pattern caused by interference of reflected light is captured and the thickness of the oil layer present in the tear film of the eye can be analyzed accurately by analyzing the color of the interference pattern.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Accordingly, the scope of protection of the present invention should be construed in accordance with the following claims, and all technical ideas within the scope of equivalents and equivalents thereof should be construed as being covered by the scope of the present invention.

100: oil layer analyzer 101; Forehead attachment
102; A jaw attaching portion 103; Reflector
110; A lens unit 120; The surface-
121; Dimmer 122; Power supply
123; A supporting portion 123a; Side wall
124; A light emitting diode 125; Light diffusing plate
126; Space 127; Upper acrylic plate
127a; Lower unevenness 127b; Upper prism
128; A lower acrylic plate 128a; Upper unevenness
129; Light diffusing agent 129a; Organic particles
129b; Inorganic particles 130; The magnification-
140; Beam splitter 150; Camera part
160; A transfer unit 161; The first-
162; A second direction transfer table 162a; The first direction-
163; A third direction transfer table 163a; The second direction-
164a; Third-direction feed lead screw
170; Oil layer analyzer 171: color analyzer
172: comparison and analysis unit 173: thickness obtaining unit
174: comparison storage unit 1741: table storage unit
1742: history storage unit 175: quantification analysis unit

Claims (11)

A planar light emitting portion for emitting light to the eyeball;
A camera unit for photographing an interference fringe image generated in the tear film oil layer of the eye by the light of the surface light emitting unit; And
And an oil layer analysis unit for analyzing the thickness of the tear film oil layer according to the color in the interference fringe image,
And a dimmer capable of adjusting a color temperature and a brightness is connected to the planar light emitting unit. The method according to claim 1,
The planar light-
A flat support;
A plurality of light emitting diodes arranged on the support portion; And
And a flat light diffusing plate disposed on the plurality of light emitting diodes. 3. The method of claim 2,
Wherein the light diffusing plate comprises a white acrylic plate. 3. The method of claim 2,
Wherein the light diffusing plate comprises an upper acrylic plate on which lower unevenness is formed and a lower acrylic plate on which upper unevenness is formed to be engaged with the lower unevenness, and the upper acrylic plate and lower acrylic include a light diffusing agent, Wherein the light diffusing rate of the plate exceeds 70% and the haze value exceeds 99%. 5. The method of claim 4,
Wherein the light diffusing agent comprises organic particles, inorganic particles, and hollow particles. 3. The method of claim 2,
Wherein a gap of 5 mm to 15 mm is further provided between the light diffusion plate and the plurality of light emitting diodes. delete The method according to claim 1,
Further comprising a transfer unit for moving the planar light emitting unit and the camera unit in the forward, backward, left, right, up, and down directions. 9. The method of claim 8,
The conveying portion
A first direction transfer table for transferring the planar light emitting portion and the camera portion in a first direction;
A second direction transfer table for transferring the first direction transfer table in a second direction perpendicular to the first direction; And
And a third direction transfer table for transferring the second direction transfer table in a third direction perpendicular to the first direction and the second direction. 10. The method of claim 9,
Wherein the first directional transfer table is coupled onto a first directional transfer rail provided on the second directional transfer table and the second directional transfer table is coupled onto a second directional transfer rail provided on the third directional transfer table, Wherein the three-way transfer table is coupled to the third directional transfer lead screw. The method according to claim 1,
Wherein the oil layer analyzing unit comprises:
Wherein the color of the tear film oil layer is acquired by obtaining the color of the captured interference fringe image and comparing the obtained color with the color distribution table of each thickness.

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