KR20220148457A - Apparatus for visual stress test - Google Patents

Abstract

The present invention relates to a visual stress test apparatus. More specifically, the present invention relates to a visual stress test apparatus which is able to form a sample by arranging black square characters apart from each other in a transversal direction and a longitudinal direction on a white background, form the strokes forming each of the square characters by combinations of dots apart from each other, amplify noise generated on the borders between black and white, which falls under a blur, and allow a subject to be able to easily distinguish colors with increasing visual stress from colors with decreasing visual stress. According to the present invention, the visual stress test apparatus comprises: a housing having an inner space and having a test window on one side unit; a sample mounted in the inner space of the housing for checking through the test window; a lighting unit arranged in the inner space of the housing and emitting light of various color wavelengths; and a lighting control unit variably controlling the color wavelengths of the light emitted by the lighting unit. The sample has black square characters arranged apart from each other in a transversal direction and a longitudinal direction on a white background, and the strokes forming each of the square characters are formed by combinations of dots arranged apart from each other.

Description

Visual stress test device {APPARATUS FOR VISUAL STRESS TEST}

The present invention relates to a visual stress test apparatus, and in particular, a target is formed such that rectangular characters formed in black on a white background are horizontally and vertically spaced apart from each other, wherein the strokes forming each of the rectangular characters are spaced apart from each other By forming a combination of dots, the noise generation corresponding to the blurring phenomenon at the boundary line between black and white can be amplified, and through this, the visual stress increasing color and the decreasing color can be easily distinguished by the subject. It relates to a stress test device.

Visible light refers to electromagnetic waves in the visible region of the human eye. Visible light generally refers to electromagnetic waves having a wavelength from 400 nm to 700 nm, but it is known that some people sense visible light with a wavelength of up to 380 nm to 800 nm.

Among visible light, visible light of a transparent color, often called white light, is light having continuous energy over the entire wavelength range of visible light like sunlight. In other words, it can be said that white light is made by mixing all visible rays of the above wavelength range.

This transparent light, that is, white light, visually gives a general or average stimulus to all people, and this universal stimulus can be applied to many individuals depending on the distribution of each person's photoreceptor cells, optic crossover, which is the binocular visual recognition pathway, and the brain's response. manifested in other symptoms.

An example of visual stress caused by universal stimuli is a situation in which a person feels glare when going out after being indoors on a clear and sunny day. In this situation, people show actions such as covering their eyes or closing their eyes to reduce the stimulation of light. These visual stimuli may result from an overall excessive amount of light or from a particularly sensitive response to light in a specific wavelength range. In other words, because light in a range other than the current wavelength of light (color) enters my eyes, visual avoidance may occur, which can be viewed as a temporary visual stress situation.

In particular, modern people often use devices including displays that use light sources such as computers, smartphones, and TVs, and bright lights are densely installed in streets and parks at night, and visual displays using colorful lights are also used in amusement parks and commercial facility signboards. As more and more effect devices are installed, they are exposed to excessive light and are subjected to serious visual stress. In many cases, such visual stress can be overcome by the individual's resistance and adaptability, but in some people, it develops into new diseases such as photosensitivity syndrome, Irlen syndrome, and dyslexia.

On the other hand, when white light is irradiated on an object, some wavelengths of light are absorbed by the object and other wavelengths are reflected according to the optical properties of the object. When white light that gives a universal visual stimulus is irradiated to a person without color vision abnormality such as color blindness by dividing the wavelength range from 380 nm to 800 nm into each specific region, each divided region is a specific color to the human eye. appear in the light of

A person may be more stimulated by light in a specific wavelength range and feel more uncomfortable, and conversely, may feel relatively comfortable with light in another specific wavelength range, and the specific wavelength range of such light may vary from person to person.

Therefore, if you can know the color of light that relieves visual stress for each individual, you can reduce visual stress by applying this color to a device that can filter the wavelength range of light entering the human eye, such as glasses, sunglasses, and sports goggles. can be mitigated or minimized.

An example of an apparatus and method for estimating an optimal color capable of alleviating a visual stress situation is disclosed in Korean Patent Registration No. 10-0999000 (hereinafter referred to as "prior art literature").

The prior art document suggests a visual aid means for alleviating visual stress that can help reduce the effects of dyslexia, migraine headaches, symptoms related to visual stress and optical disorders, and a test method for selecting the color of the visual aid means, have.

However, the prior art document requires relatively expensive equipment, and the method is also complicated and difficult, such as requiring sophisticated measurement, so it is difficult to widely disseminate for visual stress relief of ordinary people, and the color (color (color) giving visual stress) There is a disadvantage in that it is not easy to distinguish between a color (wavelength) and a color (color wavelength) that is not.

Republic of Korea Patent No. 10-0999000 (Announcement Date: October 26, 2010, Title of Invention: Method and Apparatus for Providing Color Overlay Relieving Visual Stress)

The present invention has been devised to solve the problems of the prior art as described above, and the mark is formed such that rectangular characters formed in black on a white background are spaced apart in the horizontal and vertical directions to form each of the rectangular characters. Strokes are formed by a combination of points spaced apart from each other, so that noise generation corresponding to blurring at the boundary line between black and white can be amplified, and through this, the examinee can easily increase the visual stress and reduce the color. An object of the present invention is to provide a visual stress test device that can be distinguished.

In addition, the present invention forms the points forming the stroke of the rectangular character constituting the target in a circular or rectangular shape, and forms the same size and density, and forms the spacing between the rectangular characters spaced apart and the rectangular character. By forming the thickness of the stroke to be the same, and by forming the distance between the dots forming the stroke and the length of the dots to be the same, it is possible to generate uniform noise as a whole for the color (color wavelength) that generates visual stress, It is an object of the present invention to provide a visual stress test apparatus capable of further maximizing noise generation, and consequently allowing a subject to more easily distinguish between a color increasing and a color decreasing in visual stress.

The constituent means constituting the visual stress test apparatus according to the present invention proposed to solve the above problems includes a housing having an internal space and an inspection window provided on one side thereof, and the interior of the housing so that it can be checked through the inspection window. A target mounted in a space, a lighting unit provided in the inner space of the housing to emit light of various color wavelengths, and a lighting control unit for variably controlling the color wavelength of the light emitted from the lighting unit, wherein the target is white It is characterized in that the rectangular characters formed in black are arranged to be spaced apart from each other in the horizontal and vertical directions, and the strokes forming the respective rectangular characters are formed by a combination of dots that are spaced apart from each other.

Here, the points forming the stroke have the same size and concentration, and are characterized in that they are formed in a circular or rectangular shape.

In addition, it is characterized in that the spacing between the spaced apart rectangular characters and the thickness of the strokes forming the rectangular characters are formed to be the same, and the spacing between the dots forming the strokes and the length of the dots are formed to be the same.

According to the visual stress test apparatus of the present invention having the above problems and solutions, the target is formed such that rectangular characters formed in black on a white background are spaced apart in the horizontal and vertical directions to form each of the rectangular characters. Since the stroke is formed by a combination of points spaced apart from each other, noise generation corresponding to blurring at the boundary line between black and white can be amplified, and through this, the subject can easily increase the visual stress and reduce the color. The advantage is that it can be distinguished.

In addition, according to the present invention, the dots forming the stroke of the rectangular character constituting the target are formed in a circular or rectangular shape, the size and concentration are formed to be the same, and the spacing between the rectangular characters spaced apart and the rectangular character are formed. Since the thickness of the stroke forming the stroke is the same, and the distance between the dots forming the stroke and the length of the dots are formed to be the same, it is possible to generate uniform noise as a whole for the color (color wavelength) that generates visual stress. In addition, noise generation can be further maximized, and as a result, an effect of enabling the subject to more easily distinguish between a color increasing and a color decreasing in visual stress occurs.

1 is a diagram illustrating an application of a visual stress test apparatus according to an embodiment of the present invention.
2 is a block diagram of a visual stress test apparatus according to an embodiment of the present invention.
3 is a first exemplary diagram of a table applied to the present invention.
4 is a second exemplary diagram of a table applied to the present invention.
5 is a partial enlarged view for explaining the relationship between the spacing between the rectangular characters constituting the mark applied to the present invention and the thickness of the strokes forming the rectangular characters, and the relationship between the spacing between the points forming the strokes and the length of the dots. it is do
6 shows a comparative table applied in the prior art as opposed to the table applied to the present invention.
7 is a result table showing the results of a visual stress test using a target and a comparison table applied to the present invention.

Hereinafter, a preferred embodiment of a visual stress test apparatus according to the present invention having the above problems, solutions and effects will be described in detail with reference to the accompanying drawings.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and a method for achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when described with reference to the drawings, the same or corresponding components are given the same reference numerals, and the overlapping description thereof will be omitted. .

In the following embodiments, terms such as include or have means that the features or components described in the specification are present, and the possibility that one or more other features or components may be added is not excluded in advance.

In the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

FIG. 1 is an application diagram of a visual stress test apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic configuration diagram of a visual stress test apparatus according to an embodiment of the present invention.

1 and 2 , the visual stress test apparatus 100 according to an embodiment of the present invention includes a housing 110 including an inspection window 111 , a lighting unit 120 , a target 130 and lighting. It is configured to include a control unit (140).

Specifically, the visual stress test apparatus 100 according to the embodiment of the present invention basically includes a housing 110 having an internal space and an inspection window 111 provided on one side thereof, and the inspection window 111 . A target 130 mounted in the inner space of the housing 110 so as to be confirmed through It is configured to include a lighting control unit 140 for variably controlling the color wavelength of the light emitted from (120).

The visual stress test apparatus 100 according to the present invention has an inspection window 111 that is closed to the outside so that light does not leak to the outside, but is opened to the outside so that light can pass only on the side where the subject A is located. It is configured so that light can be emitted toward the subject's eyes. That is, the visual stress test apparatus 100 according to the present invention forms an exterior through the housing 110, the housing 110 has an internal space, and the subject A sees the internal space with his eyes on one side. An inspection window 111 for viewing is provided.

In summary, the housing 110 has an internal space, and an inspection window 111 through which a predetermined area of one side is formed is formed. The housing 110 mounts or mounts the target 130 corresponding to the reading sample in an internal space, and includes the inspection window 111 so that the target 130 can be viewed from the outside, and the inspection window Except for (111), it is preferable that the outside is not visible. This is to prevent the gaze from being focused on the environment other than the target 130 corresponding to the reading sample during the reading test.

The inspection window 111 is simply formed as an open part through which the inside and outside communicate in order to prevent unnecessary visual stimulation and distortion of the target or color distortion, and it is preferable not to attach a transparent window material such as glass or acrylic.

A lighting unit 120 capable of emitting or emitting light of various colors corresponding to light of various color wavelengths is provided in the inner space of the housing 110 . That is, the lighting unit 120 is provided in the inner space of the housing 110 to emit light of various color wavelengths.

The lighting unit 120 is a light source, configured to illuminate light of various color wavelengths on the target 130. In order to prevent unnecessary visual stimulation for the subject A, the examinee ( It is preferable to be disposed at a position out of the viewing angle of A). That is, the lighting unit 120 is preferably installed inside or near the edge of the inspection window 111 at a position where light does not directly reach the eye of the subject A.

The lighting unit 120 is provided in the inner space of the housing 110 , and emits light of various colors, ie, of various color wavelengths, according to a control signal of the lighting control unit 140 . The lighting unit 120 may be provided in the form of a module to which a plurality of LED lamps are connected, and a plurality of LED modules may be provided. In addition, the lighting unit 120 may be a color lighting device composed of a plurality of LED bulbs, and in this case, the plurality of LED bulbs may be continuously arranged at regular intervals along the inner surface of the edge of the inspection window 111 . have.

The lighting unit 120 may be fixedly disposed at a predetermined position in the inner space of the housing 110 (eg, the inner surface of the edge of the inspection window), but may be provided so that it can be installed and changed to another position in some cases. have. This is so that it can be used even when the position or angle of the lighting needs to be changed according to the situation. For example, there may be a case in which light needs to be emitted from the front or rear of the target 130 according to circumstances. In addition, when the lighting unit 120 is composed of a plurality of LED modules, each LED module may simultaneously or successively cross and emit light of the same color, but simultaneously or successively cross light of different colors It is also possible to diverge.

At the position where the eye of the subject A is directed through the inspection window 111 , that is, on the opposite side where the inspection window 111 or the lighting unit 120 is formed in the inner space of the housing 110 , characters, letters , a predetermined pattern, at least one of the patterns, the mark 130 formed in black on a white background is disposed. That is, the target 130 is mounted or mounted in the inner space of the housing 110 so that it can be checked through the inspection window 111 .

The mark 130 may be formed of a printed matter in which characters, characters, a certain pattern, or the like are printed on a white base plate made of a material such as paper or plastic. Alternatively, the mark 130 may be formed in a form in which a paper on which characters, characters, a certain pattern, a pattern, etc. are printed is attached to a base plate formed of a material such as paper, plastic, or metal.

The target 130 may be formed in a color display panel such as LCD or OLED, rather than in the form of general paper or plastic. In this case, the lighting unit 120 may be disposed in the place of the target 130 and the target 130 is also displayed through the color display panel. In this case, the effect of continuously changing the color of the lighting unit 120 may be implemented in a form in which the color of the light irradiated or overlaid on the target 130 is continuously changed throughout the color display panel.

The target 130 may be arranged such that two or more targets 130 separated from each other are arranged side by side. It can be configured to print a pattern or pattern.

Since the mark 130 has to be used while replacing the various types, it is preferable to be detachably installed in the housing 110 . For example, the target 130 may be inserted into and removed from the housing 110 through a target insertion slot (not shown) provided on one side of the housing 110 .

The illumination unit 120 emits light of various color wavelengths according to a control signal of the illumination control unit 140 . To this end, the lighting control unit 140 performs an operation of variably controlling the color wavelength of the light emitted from the lighting unit 120 under the control of the computing device 200 connected by wire or wirelessly.

In this way, the lighting control unit 140 controls the lighting color of the lighting unit 120 according to the control of the computing device 200 . In this case, the lighting control unit 140 may variably control the illumination color, that is, the color wavelength of the lighting unit 120 according to the test result received from the computing device 200 . This is to find the optimal lighting color for the user, for example, a color determined to be a color corresponding to a color wavelength without visual stress according to the results of the visual stress test and the color vision test.

The computing device 200 is a concept including a smart device, a mobile device, a tablet, a computer, and the like, and any one of them may be selectively applied. The visual stress test and color vision test according to the present invention can be performed by using the computing device 200 , and the results of the visual stress test and color vision test can be compared to the visual stress test apparatus 100 according to the embodiment of the present invention, specifically It is transmitted to the lighting control unit 140 and a final result, for example, a color having a color wavelength that does not give the most visual stress to the subject may be determined.

A program for managing and controlling the lighting control unit 140 for controlling the lighting unit 120 is installed in the computing device 200, and the lighting unit 120 is turned on, turned off, and a color is changed through operation of the program It is possible to perform an operation of providing a control signal for controlling the operation of the light to the lighting control unit 140 .

In addition, the computing device 200 may form a control signal capable of adjusting the continuously changing color change speed and luminance and provide it to the lighting control unit 140 . In addition, it is possible to receive and store the response of the subject A, and finally, a color corresponding to a color wavelength that alleviates or minimizes the visual stress of the subject A may be determined. According to the operation of the computing device 200 as described above, the lighting control unit 140 receives a corresponding control signal to control the lighting unit 120 .

The visual stress testing apparatus 100 according to the present invention configured as described above uses the configuration of the target 130 so that a subject can easily select a color corresponding to a color wavelength that is subjected to strong visual stress and not subjected to visual stress. Adopt and apply variable.

Specifically, as shown in FIGS. 3 and 4, the target 130 applied to the present invention is formed by spaced apart horizontally and vertically spaced square characters formed in black on a white background, and each A stroke forming a rectangular character is formed by a combination of dots spaced apart from each other.

The target 130 applied to the present invention basically includes a plurality of square characters formed in black on a white background. The plurality of rectangular characters are arranged adjacent to each other in the horizontal and vertical directions but spaced apart from each other. In addition, when each square character is formed by printing or the like on a white background, it is formed by a combination of dots. That is, the strokes forming the rectangular character are formed by a combination of dots spaced apart from each other.

As shown in FIGS. 3 and 4 , the plurality of rectangular characters constituting the target 130 applied to the present invention configured as described above are not entirely formed in black, but black dots are regular. are arranged to be spaced apart from each other at a predetermined interval.

As described above, when strokes constituting each rectangular character are formed by a combination of black dots that are regularly spaced apart, a white space is additionally formed between the black dots and the black dots. If a color wavelength that gives visual stress to the subject is irradiated with such a configuration adopted and applied, blurring appears around the black for the entire plurality of square characters, but the square is caused by the white space between the black dots and the black dots. The blurring symptom may be amplified around the black color of the character, thereby allowing the examinee to more easily distinguish the visual stress-increasing color and the stress-reducing color.

In addition, since the target 130 applied to the present invention does not apply only one rectangular character, but is formed by arranging black rectangular characters at predetermined intervals in the horizontal and vertical directions, a white space between each rectangular character blank is formed. Accordingly, the blurring phenomenon may be amplified around the black color of the rectangular characters by the white space between the rectangular characters that appear to be black as a whole.

As a result, the target 130 applied to the present invention amplifies the blurring phenomenon by the blank space between the rectangular characters that are horizontally and vertically spaced apart from each other in the horizontal and vertical directions, and in addition to the rectangular characters. By allowing the blurring symptom to be amplified around the black color of the square character by the black dot and the white space between the black dots forming the strokes, the examinee more easily distinguishes the visual stress-increasing color and the stress-reducing color make it possible

In the present invention, when moving from a black region to a white region or from a white region to a black region, the square character constituting the target 130 is horizontally drawn by focusing on the concept that noise that appears blurred by the examinee may increase. and adjacent to each other in the vertical direction and spaced apart from each other, and the stroke of a square character was formed by a combination of black dots. As a result, since the plurality of square characters constituting the target are spaced apart from each other and the black dots constituting the stroke are spaced apart from each other, a plurality of white backgrounds are formed between the adjacent black dots, and through this, a visual When a stressful color wavelength is irradiated, the subject can more easily recognize the amplified noise, thereby more easily distinguishing and determining the visual stress-increasing color and the stress-reducing color.

On the other hand, the target 130 applied to the present invention needs to generate uniform noise as a whole so that the examinee can more easily distinguish and determine the visual stress-increasing color and the stress-reducing color. To this end, it is preferable that the points forming the stroke constituting the rectangular character have the same size and the same density. Here, if the points forming the stroke have the same size and concentration, they may be formed in various shapes. The points forming the stroke in the present invention may be formed in a circular shape as shown in FIG. 3 or may be formed in a square shape as shown in FIG. 4 .

In this way, the points forming the stroke constituting the rectangular character may be formed in a circular or rectangular shape, and the circular or rectangular points may be formed to have the same size and density. That is, when the points forming the stroke are circular, the points are formed to have the same size, that is, the same diameter and the same concentration at the same time, and when the points forming the stroke are rectangular, the points are the same It is formed to have the same size, ie, the same horizontal and vertical lengths, and the same concentration.

When the points have a square shape, the square shape may be a rectangle, but is preferably a square. That is, it is preferable that the square-shaped points have the same horizontal and vertical lengths, and have the same horizontal and vertical lengths, respectively. When the square-shaped points are square, noise generating visual stress may be generated more uniformly as a whole.

On the other hand, the target 130 applied to the present invention further maximizes the uniformity of noise generation as a whole and maximizes the noise generation corresponding to the blurring phenomenon due to visual stress at the boundary line between black and white, as shown in FIG. Similarly, the spacing (a) between the square characters and the thickness (b) of the stroke are made the same, and further, the spacing (c) between the dots and the length (d) of the dots are formed to be the same.

That is, the mark 130 applied to the present invention is formed so that the spacing (a) between the square characters spaced apart and the thickness (b) of the strokes forming the square characters are the same, and between the points forming the stroke The interval (c) and the length (d) of the points are formed to be the same.

Here, the length (d) of the point corresponds to the diameter when the point is circular, as shown in FIGS. 3 and 5 (a) and (b), and FIGS. 4 and 5 (c) and ( As shown in d), when the point is a rectangle, specifically, a square, it corresponds to the length of the side.

In this way, the spacing (a) between the square characters and the thickness (b) of the stroke are the same, and the spacing (c) between the dots and the length (d) (diameter or side length) of the dots are By forming the same, noise causing uniform visual stress is generated over the entire target area, and further, the advantage of maximizing noise generation can be exhibited.

According to the visual stress test apparatus of the present invention described above, the target is formed such that rectangular characters formed in black on a white background are horizontally and vertically spaced apart from each other, and the strokes forming each of the rectangular characters are spaced apart from each other. Because it is formed by a combination of dots, the noise generation corresponding to the blurring phenomenon at the boundary line between black and white can be amplified, and through this, the examinee can easily distinguish the color that increases the visual stress and the color that reduces the visual stress. advantages arise.

In addition, according to the present invention, the dots forming the stroke of the rectangular character constituting the target are formed in a circular or rectangular shape, the size and concentration are formed to be the same, and the spacing between the rectangular characters spaced apart and the rectangular character are formed. Since the thickness of the stroke forming the stroke is the same, and the distance between the dots forming the stroke and the length of the dots are formed to be the same, it is possible to generate uniform noise as a whole for the color (color wavelength) that generates visual stress. In addition, noise generation can be further maximized, and as a result, an effect of enabling the subject to more easily distinguish between a color increasing and a color decreasing in visual stress occurs.

Hereinafter, a method of determining a color corresponding to a color wavelength for alleviating or minimizing visual stress through the visual stress test apparatus according to an embodiment of the present invention will be schematically described.

Before performing the inspection method for determining a color for alleviating or minimizing visual stress through the visual stress inspection apparatus according to the present invention, it is preferable to adjust the luminance, that is, the brightness of the lighting unit 120 . This is because sensitivity to light differs from person to person, and exposure to a light source having a luminance exceeding an appropriate range may negatively affect the results of the examination according to the present invention.

Next, in order to smoothly proceed with the visual stress test of the subject, it is preferable to variably control the lighting unit 120 to irradiate the target 130 with continuous color wavelengths to stimulate the target cells of the examinee.

Next, the lighting unit 120 is variably controlled to sequentially change into a plurality of colors and irradiate the target 130 . For example, the lighting unit 120 is sequentially changed to seven or more colors including red, orange, yellow, green, blue, indigo and purple to irradiate the target 130, or red, green , blue, and orange are bundled two by two or four are irradiated to the target 130 at a time to select a color in which a square character or the like is clearly visible with the least noise causing visual stress.

For example, when the lighting unit 120 is divided into seven colors, the wavelength range of each color is, for example, 723 to 647 nm for red, 647 to 585 nm for orange, 585 to 575 nm for yellow, and 575 nm for green. ∼492 nm, blue is 492 to 455 nm, indigo is 455 to 424 nm, and purple is 424 to 397 nm. When the lighting unit 120 is controlled to change the color from one color to the next color, the color is continuously changed. This can be done by splitting time between two adjacent colors and inserting multiple intermediate colors. The more time you break down and the more intermediate colors you insert, the smoother the transition between the two colors can be performed.

In the process of irradiating while continuously changing the color on the target 130 by the illumination unit 120 according to the control of the illumination control unit 140, the subject A sees the black square characters thin, and at the same time makes the eyes comfortable. identifies the time point and enters this time point. The input may be made through an input device such as a keyboard connected to the computing device 200, or the test executor may input according to the hand signal or voice signal of the subject A.

At this time, the input at the time when the eyes of the subject A is comfortable at the same time that the black square character etc. look thin is at the point of time ( The input is approximated by recording the color closest to the color (of the continuously changing intermediate color), with the selected color being recorded as the 1-1 color.

Alternatively, unlike the color that is continuously changed according to the irradiation of the lighting unit 120 , the display of the computing device 200 includes seven or more of the plurality of colors including the red, orange, yellow, green, blue, indigo, and purple colors. A color corresponding to the corresponding point of time may be selected or displayed, and in this case, the test subject A can directly select the color corresponding to the test subject A directly or according to a signal of the subject A. The same applies to all similar steps to be described later. This completes the first step color selection.

Next, two-step color selection is performed. The second-step color selection verifies whether the color selected in the first-step color selection was an appropriate choice by comparing the color selected in the first-step color selection with two adjacent colors, respectively, and performing a visual stress alleviation or minimization color check.

To this end, according to the light emission order of the predetermined color, the color is continuously changed between the two colors of the 1-0 color and the 1-1 color, which are the colors of the previous order of the 1-1 color. At this time, the subject A inputs a point in time at which the black square characters, etc. appear thin and comfortable for the eyes, and selects a color closer to the color at the point of view among the 1-1 color or 1-0 color as the second -1 Determine the color and record it. In this case, as described above, instead of selecting and inputting a viewpoint to find a color corresponding thereto, a corresponding color may be directly selected and input through the screen of the computing device 200 .

The following is the second step of the two-step color selection, in which the color is continuously changed between the two colors of the first color and the second color, which are the colors of the order after the first color, and the black color At the same time, the examinee inputs a point in time at which the rectangular characters of the text appear thin and the eyes are comfortable, and the color closest to the color at that point in the 1-1 color or 1-2 color is determined and recorded as the 2-2 color. do.

Next, the determined 2-1 color and the 2-2 color are compared, and if the 2-1 color matches the 2-2 color as a result of the comparison, it is determined as the third color and recorded. However, if the 2-1 color and the 2-2 color do not match, the color is continuously changed between the two colors of the 2-1 color and the 2-2 color again, and the black square character, etc. The examinee decides and inputs the time when the eyes become comfortable while looking thin. Among the 2-1 color and the 2-2 color, a color closer to the input time point is determined as the third color and recorded.

In this way, the final determined color that can alleviate or minimize the visual stress of the subject (A), that is, the selection of the third color is completed, and according to the selected third color, lighting, glasses, sunglasses, night driving glasses, and a monitor The visual stress of the subject (A) can be greatly reduced by manufacturing and using safety glasses, a liquid crystal protective film for a smartphone, etc.

Next, a result of performing the visual stress test using the target 130 applied to the present invention and the conventional target shown in FIG. 6 will be described.

In the method of performing the examination, when the visual stress examination apparatus shown in FIGS. 1 and 2 is used and the examination is performed according to the above-described visual stress examination method, the examinee selects the color in which the target (square character, etc.) is most clearly visible. The selection time taken was measured. For the test subject, 30 volunteers were adopted and applied.

As shown in FIG. 6 , the conventional general target compared to the target 130 applied to the present invention includes a target including black letters (refer to (a of FIG. 6 )) and a target including a black circle ( FIG. 6 ). 6 (b)) was applied.

As described above, in the mark applied to the present invention, in contrast to the conventional general mark shown in FIG. 6, rectangular characters are arranged horizontally and vertically, and the stroke of each rectangular character is circular or square dots are spaced apart. Further, the spacing between the square characters and the thickness of the stroke are the same, and the spacing between the dots and the length of the dots (the diameter of a circle or the length of the side of the square) are formed to be the same.

As a result of performing the test according to these conditions, as shown in FIG. 7, when the target (TEXT target) shown in FIG. The average time was found to be 8.27 seconds, and when the target (circular target) shown in (b) of FIG. 6 was applied, the average time for selecting a color that the target can be seen well by 30 subjects was 8.10 seconds, When the target (square target) adopted in the present invention was applied, it was found that the average time for selecting a color in which the target was easily seen by 30 subjects was 6.77 seconds.

As can be seen from the test results, when the rectangular target adopted in the present invention is applied, the average time to select a color that shows the target is about 15 compared to the case where the existing target (TEXT target, circular target) is applied % faster than it can be seen. Through this, the target 130 applied to the present invention allows the generation of noise corresponding to the blurring phenomenon to be amplified at the boundary line between black and white, and through this, allows the examinee to more easily change the visual stress increase color and decrease color It can be seen that this allows them to be distinguished.

On the other hand, through the above-described visual stress test method, with respect to the distance between the target and the eye (inspection window 111 ), the preferred size of the rectangular character (square character) constituting the target 130 applied to the present invention, the rectangular character Preferred spacing between points (a), preferred thickness of strokes forming a square character (b), preferred spacing between points forming strokes (c), and preferred length of points (diameter for circles, lengths of sides for squares) ) could be confirmed.

Specifically, the distance between the eye and the target: the length of the sides of the rectangular characters: the spacing between the rectangular characters (a): the thickness of the stroke (b): the spacing between the points forming the stroke (c): the length of the dots (diameter) or the length of the side) is preferably 1: 0.0026 to 0.0032: 0.0005 to 0.0007: 0.0005 to 0.0007: 0.00016 to 0.00032: 0.00016 to 0.00032.

As a result of performing the visual stress test within this relationship and range, it was found that the selection time for the rectangular target of the present invention shown in FIG. 7 was the same, and when it was outside the relationship and range, it was confirmed that the selection time was increased did.

Actually, the visual stress test result for the square target shown in FIG. 7 shows that the distance between the eye and the target is 500 mm, the length of each square character constituting the target is 1.3 to 1.6 mm, and the spacing between the square characters is 0.25 to 0.35. mm, the thickness of the stroke is 0.25 to 0.35 mm, the spacing between the points forming the stroke is 0.08 to 0.16 mm, and the length of the points (diameter or length of the side) is 0.08 to 0.16 mm. In such a relationship and range, the selection time of the rectangular target shown in Fig. 7 was the same, and when the relationship and the range were out of the range, the selection time was increased, so through a visual stress test device having the relationship and range It is desirable to perform a visual stress test.

Although the embodiments according to the present invention have been described above, these are merely exemplary, and those of ordinary skill in the art will understand that various modifications and equivalent ranges of embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

100: visual stress test device 110: housing
111: inspection window 120: lighting unit
130: table 140: lighting control unit
200: computing device

Claims (3)

A housing having an inner space and an inspection window provided on one side thereof, a mark mounted in the inner space of the housing so as to be identified through the inspection window, and provided in the inner space of the housing to emit light of various color wavelengths Doedoe configured to include a lighting unit and a lighting control unit for variably controlling the color wavelength of the light emitted by the lighting unit,
The mark is formed by horizontally and vertically spaced rectangular characters formed in black on a white background, and the strokes forming each of the rectangular characters are formed by a combination of points spaced apart from each other. stress test device.
The method according to claim 1,
The points forming the stroke have the same size and concentration, and a visual stress test apparatus, characterized in that it is formed in a circular or rectangular shape.
The method according to claim 1,
Visual stress test, characterized in that the spacing between the spaced apart rectangular characters and the thickness of the strokes forming the rectangular characters are the same, and the spacing between the dots forming the strokes and the length of the dots are the same Device.

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