KR102010487B1 - Skin diagnosis apparatus - Google Patents

Abstract

The skin diagnosis apparatus may include a camera unit capable of photographing a face image of a subject; First and second light sources disposed around the camera unit in up, down, left and right directions; And a second light source unit disposed outside the first light source unit, wherein the first light source unit includes a plurality of light emitting devices that emit white light, wherein the plurality of light emitting devices include: a front surface in a direction of a face of a subject; It is characterized in that it is mounted to emit light in a lateral direction forming a right angle.

Description

Skin diagnosis device {SKIN DIAGNOSIS APPARATUS}

The present invention relates to a skin diagnosis apparatus, and more particularly, to a skin diagnosis apparatus capable of suppressing a saturated portion of an image photographed by a camera.

In Korean Patent Registration No. 10-0760709 (Skin Observation Device Using Multiple Light Sources, hereinafter 'Prior Art'), there is no need to replace the device for each light source, and the change according to the light source can be observed easily and accurately, and the filter A skin observing apparatus is disclosed that can significantly reduce the reduction rate of light reaching the sensor by reducing the number of s, and can easily observe the degree of enrichment of porphyrin or melanin emitted by ultraviolet light.

1 shows a representative view of the prior art.

However, in the prior art, when observing the skin by the first light source unit 100, there is a problem that a large number of saturated portions of the image photographed by the camera occur. In addition, in the prior art, since the UV blocking polarization filter 141 is always positioned in front of the detection unit, it is difficult to obtain a clear image when the skin is observed by the first light source unit 100.

The present invention has an object to solve the above technical problem, a skin diagnosis apparatus capable of suppressing the saturation of the captured image when the skin is observed in a white light environment, and can obtain a clear image The purpose is to provide.

In addition, an object of the present invention is to provide a skin diagnosis apparatus that can more easily observe a phenomenon such as wrinkles by using parallel polarized light.

The skin diagnosis apparatus of the present invention includes a camera unit capable of capturing an image of a subject's face; First and second light sources disposed around the camera unit in up, down, left and right directions; And a second light source unit disposed outside the first light source unit.

Specifically, the first light source unit may include a plurality of light emitting devices emitting white light, and the plurality of light emitting devices may be mounted to emit light in a lateral direction perpendicular to the front surface of the subject's face. The plurality of light emitting devices of the first light source unit may emit light in a lateral direction perpendicular to the front surface of the subject's face and then be reflected by an inner wall formed in the skin diagnosis apparatus. In addition, the first light source unit, the number of light emitting elements disposed on the left side of the camera unit and the number of light emitting elements disposed on the right side of the camera unit is the same, the number of light emitting elements disposed above the camera unit is the camera unit It is characterized by more than the number of light emitting elements arranged on the left side. In addition, the number of light emitting devices disposed above the camera unit may be less than the number of light emitting devices disposed below the camera unit.

Preferably, the second light source unit includes: a 2-1 light source unit disposed above the first light source unit disposed above the camera unit; A 2-2 light source unit disposed below the first light source unit disposed below the camera unit; A second light source unit 2-3 disposed at a left side of the first light source unit disposed at the left side of the camera unit; And a 2-4 light source unit disposed on the right side of the first light source unit disposed on the right side of the camera unit. The 2-1 light source unit, the 2-2 light source unit, the 2-3 light source unit, and the 2-4 light source unit may each include a white light emitting element and a polarization filter disposed in front of the white light emitting element. It is preferable.

In addition, the axis of the polarization filter included in the 2-1 light source unit and the axis of the polarization filter included in the 2-2 light source unit are parallel to each other, the axis of the polarization filter included in the 2-3 light source unit and the second 2-4 The axes of the polarization filters included in the light source unit are characterized in that they are parallel to each other.

In addition, the skin diagnosis apparatus of the present invention, the light emitting element disposed in the rear end of the polarization filter included in the 2-1 light source unit and the light emitting element disposed in the rear end of the polarization filter included in the 2-2 light source unit emits light. First filter mode; And a second filter mode in which a light emitting element disposed at a rear end of the polarization filter included in the second light source unit and a light emitting element disposed at a rear end of the polarization filter included in the 2-4 light source unit emit light. have. The axis of the polarization filter included in the second light source unit and the axis of the polarization filter included in the second light source unit may cross each other.

Preferably, in the first filter mode or the second filter mode, a polarizing filter is disposed at the front end of the camera unit, and the polarizing filter disposed at the front end of the camera unit is the polarization filter included in the 2-1 light source unit. It is characterized in that the parallel to the axis.

In addition, the first distance, which is a distance between the center of the camera unit and the first light source unit, is preferably ½ times or less of a second distance, which is a distance from the first light source unit to an inner side wall of the skin diagnosis apparatus case.

According to the skin diagnosis apparatus of the present invention, the saturation portion of the photographed image can be suppressed when the skin is observed in the white light environment, and the phenomenon such as wrinkles can be more easily observed using parallel polarization.

1 is a representative view of the prior art.
2 is a block diagram of a skin diagnosis apparatus according to an embodiment of the present invention.
Figure 3a is a front view of the skin diagnostic device according to an embodiment of the present invention.
Figure 3b is a perspective view of a skin diagnostic device according to an embodiment of the present invention.
4 is a front explanatory diagram of a skin diagnosis apparatus;
5 is an operation explanatory diagram of the first light source unit.
6 is an exemplary view of the configuration of a second light source unit.
7A and 7B are explanatory views of parallel polarization and cross polarization, respectively.
8 is an exemplary view of a camera filter unit of the present invention.

Hereinafter, a skin diagnosis apparatus according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The following examples of the present invention are intended to embody the present invention, but not to limit or limit the scope of the present invention. From the detailed description and examples of the present invention, those skilled in the art to which the present invention pertains can easily be interpreted as belonging to the scope of the present invention.

First, Figure 2 shows a block diagram of a skin diagnosis apparatus 200 according to a preferred embodiment of the present invention. 3A and 3B respectively show a front view and a perspective view of a skin diagnosis apparatus 200 according to an exemplary embodiment of the present invention.

As can be seen from FIGS. 2, 3A and 3B, the skin diagnosis apparatus 200 according to an exemplary embodiment of the present invention may include a camera unit 210, a first light source unit 220, and a first light source unit mounting unit ( 230, a second light source unit 240, a second light source unit mounting unit 250, a camera filter unit 260, and a control unit 270.

The camera unit 210 may be disposed at the center of the skin diagnosis apparatus 200 to capture a face image of a subject.

The first light source unit 220 includes a 1-1 light source unit 221, a 1-2 light source unit 222, a 1-3 light source unit 223, and a 1-4 light source unit 224. In addition, the first-first light source unit 221, the first-second light source unit 222, the first-third light source unit 223, and the first-fourth light source unit 224 are disposed up, down, left, and right around the camera unit 210. do.

4 is a front explanatory diagram of the skin diagnosis apparatus 200. 5 is an operation explanatory diagram of the first light source unit 220.

As can be seen from FIGS. 4 and 5, the first light source unit 220 is mounted on the side of the first light source unit mounting unit 230, which is a housing surrounding the outside of the camera unit 210, and the mounting state thereof appears to the outside. Do not. The first light source unit 220 includes a plurality of light emitting devices L, and the plurality of light emitting devices L is mounted to emit light inside the housing in a lateral direction perpendicular to the front surface of the subject's face. do. In other words, the plurality of light emitting elements L of the first light source unit 220 do not emit light toward the front of the subject's face, but the inside of the second light source unit mounting unit 250, which is a housing for the second light source unit 240. After the light is emitted to the side through the empty space, the light is reflected from the inner wall W formed in the second light source unit mounting part 250 to be irradiated to the face of the examinee. That is, the inner wall W is provided around the first light source unit 220 by the second light source unit mounting unit 250, and light from the light emitting element L emits light into an empty space to the inner wall W in the lateral direction. After that, the light is reflected by the inner wall W and output to the outside. Therefore, it can be said that the first light source unit 220 adopts an indirect irradiation method instead of direct irradiation to the examinee.

When the light emitting device L of the first light source unit 220 emits light toward the front surface, the reflected light reaches a greater portion of the subject's face, such as a convex nose, than the other region, and thus the image photographed by the camera unit 210. A lot of saturated areas may occur in the. That is, when the light emitting device L of the first light source unit 220 emits light toward the front surface, a lot of light is reflected at the inner corner of the case C of the skin diagnosis apparatus 200, so that the camera unit 210 is exposed. ), A lot of saturated areas occur in the captured image. Therefore, in the present invention, indirect light irradiation is realized by light emission inside the housing that is not open side, but side light emission.

In addition, when photographing by the light emission of the first light source unit 220, the camera filter unit 260, it is preferable that the first camera filter portion 261 on which no filter is mounted is located in front of the camera unit 210. .

As the light emitting element L of the first light source unit 220, it is preferable to use a white light emitting diode having a color temperature of 6000K to 10000K. By the first light source unit 220, imaging can be performed in the normal light mode.

The first light source unit 220 includes the number of light emitting elements L disposed in the first to third light source units 223 on the left side of the camera unit 210 and the first to fourth light source units 224 on the right side of the camera unit 210. It is preferable that the number of light emitting elements L arranged in the same) is the same. In addition, the number of light emitting elements L disposed in the first-first light source unit 221 above the camera unit 210 may include the first to third light source units of the left side of the camera unit 210. It is characterized by more than the number of light emitting elements (L) disposed in (223).

In addition, the number of light emitting elements L disposed in the first-first light source unit 221 on the upper side of the camera unit 210 may be equal to the first light source unit 220. It is preferable that the number of the light emitting elements L disposed at 222 is smaller than that.

The number of light emitting elements L arranged according to the position of the first light source unit 220 is different when the same number of light emitting elements L is used due to the influence of the forehead pedestal S1 and the jaw pedestal S2. This is because the amount of reflected light reaching the upper and lower sides is smaller than the left and right sides of the face, so as to prevent the shooting by the uniform reflected light being difficult. In addition, the influence of the jaw pedestal (S2) is greater than the forehead pedestal (S1), the number of light emitting elements (L) disposed on the upper side of the camera portion 210 is the light emitting element (L) disposed below the camera portion (210) It is intended to maintain a uniform amount of reflected light by reducing the number of).

For example, the light emitting element L disposed on the left and right sides of the camera unit 210 of the first light source unit 220, the light emitting element L disposed above the camera unit 210, and the camera unit 210. It is preferable that the ratio of the light emitting element L arrange | positioned below is 3: 4: 6.

The first distance x1, which is the distance between the center of the camera unit 210 and the first light source unit 220, is from the first light source unit 220 to the inner sidewall of the case C of the skin diagnosis apparatus 200. It is characterized by being less than ½ times the second distance (x2) that is the distance.

That is, the first light source unit 220 is located near the center of the camera unit 210, and needs to suppress the light reflected by reaching the edge of the inner sidewall of the case C of the skin diagnosis apparatus 200 as much as possible. . This is because a lot of saturated areas are generated in the image photographed by the camera unit 210 by the light that reaches the edge of the inner sidewall of the case C of the skin diagnosis apparatus 200 and reflects it.

The second light source unit 240 is a 2-1 light source unit 241 disposed above the 1-1 light source unit 221 and a 2-2 light source unit 242 disposed below the 1-2 light source unit 222. ), A second light source 243 disposed on the left side of the first light source 223, and a second light source 244 disposed on the right of the first light source 224. It is preferable.

Unlike the first light source unit 220, the second light source unit 240 emits light toward the front surface of the skin diagnosis apparatus 200. In addition, the second light source unit 240 is mounted on the second light source unit mounting unit 250.

6 illustrates an example of the configuration of the second light source unit 240.

As can be seen from FIG. 6, the 2-1 light source unit 241, the 2-2 light source unit 242, the 2-3 light source unit 243, and the 2-4 light source unit 244 are each of a plurality of light emission. It is preferable to mount the element L. As the light emitting element L of the second light source unit 240, a white light emitting diode having a color temperature of 6000K to 10000K is preferably used.

In addition, the 2-1 light source unit 241, the 2-2 light source unit 242, the 2-3 light source unit 243 and the 2-4 light source unit 244, respectively, in the center of the front of the light emitting element (L) Visible light blocking filter (f1) is mounted so that the ultraviolet image can be taken.

In addition, the 2-1 light source unit 241, the 2-2 light source unit 242, the 2-3 light source unit 243, and the 2-4 light source unit 244 are respectively disposed on the front and rear surfaces of the light emitting element L. The polarization filter is mounted to allow the image to be captured by the polarization mode.

However, the axis of the polarization filter included in the 2-1 light source unit 241 and the axis of the polarization filter included in the 2-2 light source unit 242 are parallel to each other, and the polarization included in the 2-3 light source unit 243. The axis of the filter and the axis of the polarization filter included in the 2-4 light source unit 244 may be parallel to each other.

The skin diagnosis apparatus 200 of the present invention includes a light emitting element L disposed at a rear end of the polarization filter included in the 2-1 light source unit 241 and a rear end of the polarization filter included in the 2-2 light source unit 242. Included in the first filter mode and the second light source 244 disposed at a rear end of the polarization filter included in the second and second light source units 243 and the light emitting element L disposed in the second light source unit 243. The light emitting device L disposed at the rear end of the polarized filter may operate in the second filter mode in which light is emitted.

In addition, the axis of the polarization filter included in the 2-1 light source unit 241 and the axis of the polarization filter included in the 2-3 light source unit 243 preferably cross each other.

In the first filter mode or the second filter mode, the polarization filter is disposed in front of the camera unit 210, and the polarization filter disposed in front of the camera unit 210 includes the polarization filter included in the second light source unit 241. It is characterized in that parallel to the axis of.

7A and 7B are explanatory views of parallel polarization and cross polarization, respectively.

When the axes of the two polarizing filters are parallel to each other as shown in FIG. 7A, the polarization is called parallel polarization. When the axes of the two polarizing filters are perpendicular to each other, as shown in FIG. 7B, the polarization filters are referred to as cross polarization.

The first filter mode of the present invention is a parallel polarization mode. For example, in the first filter mode, the polarization filter of the camera filter unit 260 to be positioned before the camera unit 210, the polarization filter included in the 2-1 light source unit 241, and the second-2 light source unit 242. It is preferable that all the polarization filters contained in use a horizontal polarization filter. In general, however, the wrinkles of the face tend to decrease horizontally, and in order to facilitate the observation of the wrinkles of the horizontal face, the first filter mode using the horizontal polarization filter is the upper and lower polarization filters around the camera unit 210. It characterized by using.

In addition, the second filter mode of the present invention is a cross polarization mode. For example, in the first filter mode, the polarization filter of the camera filter unit 260 to be positioned in front of the camera unit 210 uses a horizontal polarization filter, and the polarization filter and the third polarization filter included in the 2-3 light source unit 243. It is preferable that all the polarization filters included in the 2-4 light source unit 244 use vertical polarization filters.

That is, although the present invention is designed to use both parallel polarization and cross polarization, the horizontal polarization filter is adopted as the upper and lower polarization filters around the camera unit 210 so that the image captured by the parallel polarization can be obtained more clearly. In addition, the horizontal polarizing filter is used as the polarization filter of the camera filter unit 260 to be positioned in front of the camera unit 210.

8 is an exemplary view of the camera filter unit 260 of the present invention.

As can be seen from FIG. 8, the camera filter unit 260 of the present invention comprises a first camera filter portion 261 without a filter and a second camera filter portion 262 with a polarization filter mounted thereon. do. Rotation of the motor allows one of the first camera filter portion 261 and the second camera filter portion 262 to be positioned at the front end of the camera portion 210.

In detail, when photographing by the first light source unit 220, the first camera filter part 261 may be positioned at the front end of the camera unit 210.

In addition, when photographing the first filter mode and the second filter mode of the second light source unit 240, it is preferable that the second camera filter part 262 is positioned at the front end of the camera unit 210.

The controller 270 controls the operations of the first light source unit 220, the second light source unit 240, the camera unit 210, and the camera filter unit 260 so that photography may be performed in various light source modes. . However, the controller 270 may be implemented by installing a computer program driven by a processor in an external terminal instead of being embedded in the main body of the skin diagnosis apparatus 200.

As described above, according to the skin diagnosis apparatus 200 of the present invention, it is possible to suppress the saturation portion of the photographed image when the skin is observed in the white light environment, and more easily the phenomenon such as wrinkles using parallel polarization. It can be seen that it can be observed.

200: skin diagnosis device
210: camera unit 220: first light source unit
230: first light source unit mounting unit 240: second light source unit
250: second light source unit mounting unit 260: camera filter unit
270 control unit
221: 1-1 light source unit 222: 1-2 light source unit
223: 1-3th light source unit 224: 1-4 light source unit
241: 2-1 light source unit 242: 2-2 light source unit
243: 2-3 light source unit 244: 2-4 light source unit
261: first camera filter part 262: second camera filter part
S1: forehead support S2: jaw support
C: Case of skin diagnosis device L: Light emitting element

Claims (12)

In the skin diagnosis device,
A camera unit capable of capturing an image of a subject's face;
First and second light sources disposed around the camera unit in up, down, left and right directions; And
And a second light source unit disposed outside the first light source unit.
The first light source unit includes a plurality of light emitting devices emitting white light,
The plurality of light emitting devices are mounted on the skin diagnostic device, characterized in that to emit light in the lateral direction perpendicular to the front surface of the subject's face. delete The method of claim 1,
A plurality of light emitting elements of the first light source unit,
And a light emitted into an empty space in a lateral direction perpendicular to a front surface of a subject's face, and then reflected on an inner wall formed inside the skin diagnosis apparatus. The method of claim 1,
The first light source unit,
The number of light emitting elements disposed on the left side of the camera unit is the same as the number of light emitting elements disposed on the right side of the camera unit, and the number of light emitting elements disposed on the left side of the camera unit is the number of light emitting elements disposed on the left side of the camera unit. Skin diagnostic device, characterized in that more. The method of claim 4, wherein
The first light source unit,
And the number of light emitting elements arranged above the camera unit is smaller than the number of light emitting elements arranged below the camera unit. The method of claim 1,
The second light source unit,
A 2-1 light source unit disposed above the first light source unit disposed above the camera unit;
A 2-2 light source unit disposed below the first light source unit disposed below the camera unit;
A second light source unit 2-3 disposed at a left side of the first light source unit disposed at the left side of the camera unit; And
And a 2-4 light source unit disposed on the right side of the first light source unit disposed on the right side of the camera unit. The method of claim 6,
The 2-1 light source unit, the 2-2 light source unit, the 2-3 light source unit and the 2-4 light source unit, respectively
And a polarization filter disposed in front of the white light emitting element and the white light emitting element. The method of claim 7, wherein
The axis of the polarization filter included in the 2-1 light source unit and the axis of the polarization filter included in the 2-2 light source unit are parallel to each other,
The axis of the polarizing filter included in the 2-3 light source unit and the axis of the polarizing filter included in the 2-4 light source unit parallel to each other. The method of claim 8,
The skin diagnosis device,
A first filter mode in which a light emitting element disposed at a rear end of the polarization filter included in the 2-1 light source unit and a light emitting element disposed at a rear end of the polarization filter included in the 2-2 light source unit emit light; And
Operable in a second filter mode in which a light emitting element disposed at a rear end of the polarization filter included in the 2-3 light source unit and a light emitting element disposed at a rear end of the polarization filter included in the 2-4 light source unit emit light; A skin diagnostic device, characterized in that. The method of claim 9,
The axis of the polarizing filter included in the 2-1 light source unit and the axis of the polarizing filter included in the 2-3 light source unit intersect each other. The method of claim 10,
In the first filter mode or the second filter mode,
A polarization filter is disposed in front of the camera unit, and the polarization filter disposed in front of the camera unit is parallel to the axis of the polarization filter included in the 2-1 light source unit. The method of claim 1,
A first distance, which is a distance between the center of the camera unit and the first light source unit,
And less than ½ times the second distance, the distance from the first light source to the inner sidewall of the skin diagnostic device case.

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