SKIN DIAGNOSING DEVICE

A skin diagnosing device includes a main body provided with an input interface for operation; and a head connected to one end of the main body, the head includes: a front cover forming a contact surface with of a user and including an opening; a cover window covering the opening; a plurality of ultraviolet light sources and a plurality of visible light sources, which are disposed behind the front cover and face the opening; at least one camera which is disposed behind the plurality of ultraviolet light sources and the plurality of visible light sources, and faces the opening; and a laser light source which is disposed behind the at least one camera and faces the opening.

TECHNICAL FIELD

The present invention relates to a skin diagnosing device.

BACKGROUND ART

The skin care is aimed at maintenance of blemish-free, clean, and smooth skin, and in particular, the greatest interest has been in caring the facial skin among the body parts. Therefore, people try to keep their clean skin by receiving massage, applying a functional cosmetic product, or using various cleaning products to care for the facial skin.

The people's skin is largely classified into dry, neutral, and oily, and specifically, since the people's skin is variously classified according to conditions such as oil and moisture, color tone, elasticity, etc., the use of appropriate products or skin care methods according to respective types may be required.

In the case of various skin diagnosing devices or systems according to the related art, most of the skin diagnosing devices or systems are large and expensive products, and as the skin diagnosing devices or systems require use by experts, there is a limitation in providing the skin diagnosing devices or systems at limited places such as hospitals.

Thus, in general, since people select a product or skin care method by determining a skin type based on their subjective judgment, a problem of worsening skin conditions may occur due to misuse of the product or incorrect skin care.

DISCLOSURE OF THE INVENTION

Technical Problem

An object of the present invention is to provide a skin diagnosing device having a compact size while having various components for diagnosing a skin condition.

Another object of the present invention is to provide a skin diagnosing device capable of uniformly measuring and diagnosing a skin diagnosis area while having a compact size.

Technical Solution

A skin diagnosing device according to an embodiment of the present invention includes a main body provided with an input interface for an operation and a head connected to one end of the main body, wherein the head includes a front cover configured to form a contact surface and including an opening, a cover window configured to cover the opening, a plurality of ultraviolet light sources and a plurality of visible light sources, which are disposed behind the front cover and face the opening, at least one camera which is disposed behind the plurality of ultraviolet light sources and the plurality of visible light sources and faces the opening, and a laser light source which is disposed behind the at least one camera and faces the opening.

The skin diagnosing device may further include a first inner body in which the plurality of ultraviolet light sources are provided and which is coupled to a rear side of the front cover and a second inner body in which the plurality of visible light sources are provided and which is coupled to a rear side of the first inner body, wherein the first inner body may include an opening formed in an area including a center the first inner body, and each of the plurality of ultraviolet light sources may be spaced a first distance from the center of the first inner body.

Each of the plurality of visible light sources may be spaced a second distance greater than the first distance from a center of the second inner body, the opening of the first inner body may include a main opening formed in an area including the center and a plurality of sub openings formed outside the main opening, and a radius of the main opening may be less than the second distance.

In an embodiment, each of the plurality of sub openings may be formed as an area between the two ultraviolet light sources adjacent to each other.

In an embodiment, the second distance is a distance for avoiding provision of light reflected from the cover window in light emitted from the plurality of visible light sources to a diagnosis area that is preset within an image acquired through the at least one camera.

The second inner body may include a camera opening formed in the area including the center and a laser light source opening formed in an area between the laser light source and the cover window on an area between the camera opening and an edge of the second inner body.

The skin diagnosing device may further include a polarization assembly including a first polarizing film formed in front of some of the plurality of visible light sources and a second polarizing film formed in front of the rest of the plurality of visible light sources.

Any one of the first polarizing film and the second polarizing film may be formed in front of any one camera of the at least one camera.

In an embodiment, a distance between a central axis of the head in a front and rear direction and the at least one camera may be less than that between the central axis and the laser light source. In this case, the laser light source may be disposed to be inclined at a predetermined angle with respect to the front and rear direction of the head.

A radius of an inner circumferential surface of the front cover corresponding to the opening may be less than each of the first distance and the second distance.

The radius of the inner circumferential surface of the front cover may gradually decrease toward the contact surface of the front cover.

In an embodiment, the head may be formed to extend from one end of the main body at an obtuse angle.

Advantageous Effects

According to an embodiment of the present invention, the various components such as the ultraviolet light source, the visible light source, the camera, and the laser light source may be provided in the head of the skin diagnosing device to provide the various diagnosis information related to the user's skin condition.

In addition, the skin diagnosing device may implement the head having the compact size by disposing the laser light source at the position that is furthest from the front cover and disposing the remaining components between the laser light source and the front cover based on the optical characteristics.

In addition, the visible light source provided in the skin diagnosing device may be disposed to avoid the reflected light from being provided to the diagnosis area in the image acquired by the camera to acquire more accurate diagnosis information about the skin.

In addition, the chamfer structure may be formed on the inner circumferential surface of the front cover to minimize the shaded area generated inward from the edge of the opening. Therefore, since the shaded area is provided on the diagnosis area in the image acquired by the camera, the possibility of generating the inaccurate diagnosis information may be prevented in advance.

MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments disclosed in this specification is described with reference to the accompanying drawings, and the same or corresponding components are given with the same drawing number regardless of reference number, and their duplicated description will be omitted. Furthermore, terms, such as a “module” ad a “unit”, are used for convenience of description, and they do not have different meanings or functions in themselves. Moreover, detailed descriptions related to well-known functions or configurations will be ruled out in order not to unnecessarily obscure subject matters of this specification. However, this does not limit this specification within specific embodiments and it should be understood that the present disclosure covers all the modifications, equivalents, and replacements within the idea and technical scope of this specification.

It will be understood that although the ordinal numbers such as first and second are used herein to describe various elements, these elements should not be limited by these numbers. The terms are only used to distinguish one component from other components.

It will also be understood that when an element is referred to as being “'connected to” or “engaged with” another element, it can be directly connected to the other element, or intervening elements may also be present. It will also be understood that when an element is referred to as being ‘directly connected to’ another element, there is no intervening elements.

The terms of a singular form may include plural forms unless referred to the contrary.

In this application, the terms “comprises” or “having” are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

FIG.1is a perspective view of a skin diagnosing device when viewed from one side according to an embodiment of the present invention, andFIG.2is a perspective view of the skin diagnosing device when viewed from the other side according to an embodiment of the present invention.

Referring toFIGS.1and2, a skin diagnosing device1according to an embodiment of the present invention may be a device for acquiring various data related to user's skin conditions. The skin diagnosing device1may include a head10connected to a main body20and the main body20for user's gripping.

The user allows the head10to be in contact with the user's skin while holding the main body20so that the skin diagnosing device1acquires various data related to the skin conditions. In order to allow the head10to be in easily contact with the sink by the user while holding the main body20, the head10may be formed to extend from one end of the main body20at a predetermined angle R (e.g., an obtuse angle). For example, the angle R may be 120°, but is not limited thereto.

The head10may include a front cover101that forms a contact surface with the skin. In addition, the head10may include a side cover102that covers a side surface.

Components for acquiring the data related to the skin conditions may be provided in an inner space of the head10, which is formed by the front cover101and the side cover102.

An opening103through which light emitted from a light source disposed in the front cover101is irradiated to the skin to acquire an image of the skin by a camera disposed in the front cover101may be formed in the front cover101. That is, the skin diagnosing device1may acquire image data for skin diagnosis through the light source and the camera.

The front cover101and the opening103may generally have a circular shape, but is not limited thereto.

The opening103may be formed in an area including a center of the front cover101, and the front cover101may be in close contact with the skin. Thus, it is possible to prevent the light emitted from the light source from leaking to the outside or prevent external light from being introduced to prevent an inaccurate image of the skin from being acquired.

A sensor hole106(seeFIG.3) through which one end of a moisture measuring sensor155disposed inside the head10is exposed may be formed in the front cover101. The skin diagnosing device1may acquire sensing data related to a moisture level of the skin as the moisture measuring sensor155is in contact with the skin.

According to an embodiment, when the contact of the front cover101with the skin is detected based on the sensing data of the moisture measuring sensor155, the skin diagnosing device1may drives the light source and the camera, which are disposed therein, acquire the data (image data and/or sensing data of the moisture measuring sensor) related to the skin conditions. Thus, it is possible to prevent side effects due to the irradiation of internal ultraviolet light or laser light to the user's eyes or the like from occurring.

The main body20may include a case201that forms an outer appearance. The case201is formed to have a substantially cylindrical shape so that the user easily grasps the case201by his/her hands.

Although not shown, a main board on which components (processor, memory, etc.) for controlling driving of the components provided in the head10or controlling power supply are mounted may be provided inside the main body20.

At least one input interface (e.g., buttons202aand202b) for turning on/off the skin diagnosing device1or setting an operation mode may be provided on one surface of the case201. Also, an indicator203(e.g., the light source) for notifying a power state or an operation state of the skin diagnosing device1may be provided on one surface of the case201.

A connection terminal connected to other electronic devices (tablet PC, smart phone, PC, etc.) may be formed in a lower portion of the main body20. In this case, the skin diagnosing device1may be driven by receiving power from an electronic device connected through the connection terminal and may transmit data (image data and/or sensing data of the moisture measuring sensor) acquired in relation to the skin conditions to the electronic device. That is, a separate battery may not be provided inside the main body20, and thus a weight of the skin diagnosing device1may be minimized.

In this case, the data acquired by the skin diagnosing device1may be analyzed by the electronic device connected to the skin diagnosing device1. That is, the electronic device may acquire and provide user's skin diagnosis information based on the data (such as image data and/or sensing data of the moisture measuring sensor) acquired from the skin diagnosing device1.

However, a battery may be provided inside the main body20according to an embodiment.

Hereinafter, various embodiments related to the head10of the skin diagnosing device1will be described with reference toFIGS.3to12b.

FIG.3is an exploded perspective view illustrating a head of the skin diagnosing device.

In the following drawings, a direction in which the front cover101is disposed with respect to the second light source assembly130is defined as a front side of the head10, and a direction in which the laser light source assembly170is disposed is defined as a rear side of the head10.

Referring toFIG.3, the head10may include the front cover101, a first light source assembly120disposed behind the front cover101, a second light source assembly130disposed behind the first light source assembly120, a plurality of cameras140aand140b(seeFIG.7a) disposed behind the second light source136, and a laser light source assembly170disposed behind the plurality of cameras140aand140b.

The front cover101may cover a front surface of the head10and form a contact surface with the skin. As described with reference toFIGS.1to2, the opening103may be formed in the front cover101.

As the opening103is formed, there is a risk that external dust, foreign matters, moisture, etc. may be penetrated into the inside of the head10through the opening103. To prevent this, the head10may include a cover window104that covers the opening103to block the inside and the outside of the head10.

The cover window104may be coupled to a rear side of the front cover101or fixed between the front cover101and a front inner body110.

The cover window104may be made of a material such as transparent glass or plastic. Thus, the light emitted from the light source provided inside the head10may pass through the cover window104and then be irradiated to the skin, and light reflected from the skin may pass through the cover window104and then be incident into the cameras140aand140b.

The head10may further include a gray card105formed to correspond to a partial area of the opening103.

The gray card105may be provided to acquire more accurate image data by correcting camera deviations of the skin diagnosing devices. The skin diagnosing device1or a processor of the electronic device connected to the skin diagnosing device1may correct a color deviation with respect to the image on other areas (skin diagnosis area), based on the image on an area corresponding to the gray card105among the images acquired through the cameras140aand140b.

The gray card105may be disposed in front of the cover window104to minimize a distance from the skin, thereby enabling more accurate correction of the image. However, the gray card105may be disposed behind the cover window104according to an embodiment.

The first light source assembly120may be disposed behind the front cover101. A front inner body110through the light is uniformly irradiated to the areas of the skin by securing a sufficient separation distance between the cover window104and the first light source123may be provided the front cover101and the first light source assembly120.

The front inner body110may be formed in a ring shape having a predetermined length in a front and rear direction. Thus, the sufficient separation distance may be formed between the front cover101and the first light source assembly120. In addition, light emitted from the internal light sources may pass through the opening of the front inner body110, and light reflected from the skin may be incident into the camera. The front inner body110may be coupled to the front cover101through a coupling member such as a screw.

The first light source assembly120may be coupled to a rear side of the front inner body110.

The first light source assembly120may include a middle inner body121, a first light source mounting plate122coupled to a front side of the middle inner body121, and a plurality of first light sources123mounted on a front side of the first light source mounting plate122.

The middle inner body121may be coupled to the front inner body110to fix the first light source mounting plate122and the plurality of first light sources123.

Each of the middle inner body121and the first light source mounting plate122may have a ring shape. Thus, an opening124amay be formed in an area including a center of each of the middle inner body121and the first light source mounting plate122.

Light emitted from the second light source136and the laser light source172disposed behind the first light source assembly120may pass through the cover window104through the opening124aand then be irradiated to the skin. In addition, light reflected from the skin may be incident into the cameras140aand140bthrough the opening124a.

According to an embodiment, a plurality of sub openings124b(seeFIG.9) may be further formed outside the opening124a.In this case, the opening124amay be defined as a main opening124a.Contents related to the main opening124aand the sub opening124bwill be described later with reference toFIGS.6ato10.

The plurality of first light sources123may be disposed to face the front cover101. For example, the plurality of first light sources123may be implemented as ultraviolet light sources emitting ultraviolet light. The ultraviolet light source may include a UV-LED that emits light having a UV-A wavelength.

According to an embodiment, since the plurality of first light sources123are spaced regular intervals from each other to minimize a deviation for each area of the light irradiated to the skin.

The second light source assembly130may be coupled to a rear side of the first light source assembly120.

The second light source assembly130may include rear inner bodies131aand131b,a second light source mounting plate133coupled to a front side of each of the rear inner bodies131aand131b,a plurality of second light sources136mounted on the second light source mounting plate133, and a polarization assembly150coupled to a front side of the second light source mounting plate133.

The rear inner bodies131aand131bmay include a plate mounting body131aforming a mounting surface of the second light source mounting plate133and a camera accommodating body131bextending to a rear side of the plate mounting body131ato form an accommodating space that accommodates the cameras140aand140b.

The plate mounting body131amay have a substantially disk shape. A camera opening132aformed to correspond to the cameras140aand140band a laser light source opening132bformed to correspond to the laser light source172may be formed in the plate mounting body131a.

As illustrated in the drawings, at least one camera opening132amay be formed to correspond to each of at least one camera140aand140b,but this is not always limited thereto, and one opening may be formed regardless of the number of cameras.

The laser light source opening132bmay be formed to correspond to the opening161bformed in a laser light source fixing body160to be described later.

The second light source mounting plate133may be mounted in front of the plate mounting body131a.A first opening133a(seeFIG.8) corresponding to the camera opening132aand a second opening133b(seeFIG.8) corresponding to the laser light source opening132bmay be formed in the second light source mounting plate133. For example, a surface area of the first opening133amay be equal to or greater than that of the camera opening132a,and a surface area of the second opening133bmay be equal to or greater than that of the laser light source opening132b,but are limited thereto.

The second light source mounting plate133may be implemented as a circuit board, but this is not necessarily limited thereto. When the second light source mounting plate133is the board, the second light source mounting plate133may be integrally formed with connection boards134and135or may be connected to the connection boards134and135. The connection boards134and135may be connected to the main body20to transmit signals or power to the first light source123, the second light source136, the cameras140aand140b,the moisture measuring sensor155, and the laser light source.

A plurality of second light sources136disposed to face the front cover101may be mounted on a front surface of the second light source mounting plate133. For example, the plurality of second light sources136may be implemented as a visible light source (e.g., white light source) emitting visible light. The white light source may be implemented as an LED emitting white light.

According to an embodiment, the above-described first light source123may be implemented as the visible light source, and the second light source136may be implemented as the ultraviolet light source.

Since the plurality of second light sources136are spaced regular intervals from each other to minimize a deviation for each area of the light irradiated to the skin.

The cameras140aand140bmay be accommodated in the camera accommodating body131band disposed to face the front cover101.

For example, the skin diagnosing device1may include two cameras140aand140barranged side by side. In this case, a camera polarizing film154to be described later may be disposed in front of any one camera.

The polarization assembly150may be provided in front of the rear inner bodies131aand131b.The polarization assembly150may include a polarizing body151and an upper polarizing film152and a lower polarizing film153, which are fixed to both surfaces of the polarizing body151, respectively.

The polarizing body151may have a shape generally corresponding to the second light source mounting plate133. That is, openings corresponding to the first openings133aand the second openings133bmay be formed in a center of the polarizing body151.

In addition, a plurality of light source grooves formed at positions corresponding to the plurality of second light sources136may be formed in an edge of the polarizing body151. The upper polarizing film152or the lower polarizing film153may be disposed in each of the plurality of light source grooves.

The upper polarizing film152and the lower polarizing film153may transmit polarized light obtained by filtering any one of a vertical component and a horizontal component of the light emitted from the second light source136.

The upper polarizing film152and the lower polarizing film153may be implemented as different types of polarizing films. For example, the upper polarizing film152may be implemented as a horizontal polarizing film, and the lower polarizing film153may be implemented as a vertical polarizing film. That is, some of the plurality of second light sources136may be implemented to radiate horizontally polarized light to the skin, and others may be implemented to radiate vertically polarized light to the skin.

The lower polarizing film153(or the upper polarizing film152) may extend to an area corresponding to the front of any one of the at least one camera140aor140bto form the camera polarizing film154. In this case, any one of the cameras (e.g., the second camera140b) may function as a polarizing camera.

The skin diagnosing device1may acquire various images of the skin through the plurality of second light sources136and the cameras140aand140b.That is, the skin diagnosing device1or the processor (not shown) of the electronic device connected to the skin diagnosing device1may drive some of the plurality of second light sources136based on types of skin diagnosis information to be acquired and may drive any one of the first camera140aand the second camera140b(assuming a polarizing camera).

According to an embodiment, the moisture measuring sensor155may be provided in front of the plate mounting body131a.The moisture measuring sensor155may be partially exposed to the front side of the front cover101through the sensor hole106. For example, the moisture measuring sensor155may be implemented as a current sensor that measures current when being in contact with the skin, and in this case, the sensing data may correspond to a current measurement value. As an amount of moisture in the skin increases, the current measurement value may increase.

The laser light source assembly170may be disposed behind the second light source assembly130. For example, the laser light source assembly170may be fixed to a rear side of the second light source assembly130through a laser light source fixing body160.

The laser light source fixing body160may include a laser light source accommodating part161athat forms an accommodating space of the laser light source172and an opening161bformed in front of the laser light source accommodating part161a.

The laser light source assembly170may include a coupling body171for coupling the laser light source172to the laser light source fixing body160. The coupling body171may be coupled to a rear side of the laser light source fixing body160.

The cameras140aand140bmay be disposed in front of the laser light source172, and the cameras140aand140bmay be disposed adjacent to a central axis of the head10in the front and rear direction. Thus, the laser light source172may be disposed on an edge area spaced apart from the central axis and may be disposed to be inclined at a predetermined angle with respect to the front and rear direction of the head10in order to irradiate the laser light to the cover window104.

The laser light source172may include a laser diode that emits laser light.

According to an embodiment of the present invention, the skin diagnosing device1may emit any one of the ultraviolet light, the visible light (white light), and the laser light, which corresponds to the skin diagnosis information to be acquired and may acquire the skin diagnosis information based on the image data acquired through any one camera. That is, the skin diagnosing device1is implemented to acquire diagnosis information on various skin indicators (oil, skin tone, pores, wrinkles, pigmentation, elasticity, sebum, etc.).

Specifically, when it is desired to acquire the diagnosis information on the oil, the skin tone, the pores, and the wrinkles of the skin, the skin diagnosing device1may turns on the plurality of second light sources136and acquire image data through a general camera (e.g., the first camera140a).

In addition, when it is desired to acquire the diagnosis information on the skin pigmentation, etc., the skin diagnosing device1may turn on the second light sources disposed behind the vertical polarizing film among the plurality of second light sources136to acquire vertically polarized image data.

In addition, the skin diagnosing device1may turn on the laser light source172to acquire diagnosis information on the elasticity of the skin and also turn on the ultraviolet light source123to acquire the diagnosis information on the sebum of the skin.

FIG.4is a cross-sectional view illustrating the head of the skin diagnosing device, andFIG.5is a view illustrating a light irradiation area of a laser light source and a skin diagnosis area in an image acquired by a camera, which are disposed according to the embodiment ofFIG.4.

Referring toFIGS.4and5, when the front cover101is in contact with the skin, skin diagnosis information on an area500corresponding to the opening103may be acquired.

In order to acquire accurate diagnosis information on the skin, data (image data) on an area having a predetermined size or more (hereinafter, referred to as a ‘diagnosis area’) of the area500may be required. In addition, image data for a correction area510corresponding to the gray card105may be required to correct a deviation of the light sources or a deviation of the cameras between products.

In the case of the ultraviolet light source (e.g., the first light source123) and the visible light source (e.g., the second light source136), a plurality of light sources may be provided, and since straightness of light is relatively low, the light may be evenly irradiated to the area500.

On the other hand, in the case of the laser light source172, since straightness of the laser light is relatively higher than that of the ultraviolet light source and the visible light source, a distance from the skin (or the cover window104) has to be long to evenly irradiate the light to the diagnosis area and the correction area510.

However, in order to implement the skin diagnosing device1having a compact size, a length of the head10may be limited within a predetermined length.

Based on this, the laser light source172may be disposed to be maximally spaced apart from the cover window104based on the structure, length, or size of the head10. For example, when the laser light source172is disposed to have a predetermined distance H4from the cover window104, a laser light irradiation area520to which the laser light is uniformly irradiated may be formed. Thus, a diagnosis area540for acquiring the diagnosis information of the skin may be secured.

The cameras140aand140bmay be spaced a predetermined distance H3from the cover window104to form a photographing area530including the correction area510and the diagnosis area540.

Based on the positions of the cameras140aand140b, the plurality of first light sources123and the plurality of second light sources136may be disposed between the cameras140aand140band the cover window104to minimize an increase in size of the skin diagnosing device and minimize a decrease in amount of light due to the increase in separation distance.

That is, the distance H4between the laser light source172and the cover window104may be greater than a distance H1between the first light source123and the cover window104, a distance H2between the second light source136and the cover window104, and a distance H3between each of the cameras140aand140band the cover window104.

According to the arrangement illustrated inFIG.4, the skin diagnosing device1may acquire and provide the image data of the diagnosis area540to which the uniform amount of light is irradiated to provide accurate skin diagnosis information while having the compact size.

FIGS.6ato7bare exemplary views for explaining an arrangement of the second light source for preventing reflected light from being provided to the skin diagnosis area of the image acquired by the camera.

Referring toFIG.6a, a plurality of second light sources136(e.g., a white light source) may be disposed on a front surface of the second light source mounting plate133. When the second light source136is turned on to emit light, a portion of the emitted light may pass through the cover window104and be irradiated to the skin of the area500corresponding to the opening103. On the other hand, the rest of the emitted light may be reflected by the cover window104and be irradiated into the head10.

Based on this, when the plurality of second light sources136are disposed to be spaced a predetermined distance (e.g., a first distance D1) from the center of the second light source mounting plate133, light reflected from an area corresponding to the diagnosis area540of the cover window104may be incident into the camera (e.g., the second camera140b).

In this case, as illustrated inFIG.6b, at least one reflected light RL may be provided in the diagnosis area540on images acquired by the second camera140bhaving a predetermined photographing area530.

As the at least one reflected light RL is provided in the diagnosis area540, there is a possibility that erroneous diagnosis information on the user's skin may be provided.

Referring toFIG.7a, the plurality of second light sources136according to an embodiment of the present invention may be spaced a second distance D2from the center of the second light source mounting plate133to avoid the generation of the reflected light within the diagnosis area540.

When the plurality of second light sources136are spaced a second distance D2from the center, the plurality of second light sources136may be disposed closer to an edge than a center of the second light source mounting plate133(or the second light source assembly130).

Also, although not shown, the second distance D2may be greater than a radius of the area500formed by the opening103.

In this case, as illustrated inFIG.7a, since the light reflected from the area corresponding to the diagnosis area540is irradiated to the outside of the second camera140b,the reflected light. may not be provided on the diagnosis area540of the image acquired by the second camera140b.

Although not shown, when the plurality of second light sources136are spaced the second distance D2from the center, the light reflected from the outer area of the diagnosis area540may be irradiated to the second camera140b.In this case, at least one reflected light RL′ may be provided in the image acquired by the second camera140b. However, since the at least one reflected light RL′ is provided outside the diagnosis area540, it may not have any effect in a process of acquiring the diagnosis information.

That is, according to an embodiment illustrated inFIGS.6ato7b, the plurality of second light sources136may be disposed to be spaced a predetermined distance from the center of the second light source assembly130to avoid the provision of the reflected light on the diagnosis area540, which is previously defined within the image acquired by the cameras140aand140b.Thus, an erroneous diagnosis of the skin conditions due to the reflected light being provided in the diagnosis area540may be prevented from occurring.

FIG.8is a front view of the second light source assembly including the second light source disposed according toFIGS.7ato7b, andFIG.9is a front view of the first light source assembly disposed in front of the second light source assembly.

Referring toFIGS.8to9, as described above inFIGS.7ato7b, the plurality of second light sources136may be spaced the second distance D2from the center of the second light source mounting plate133(or the second light source assembly130) and be disposed adjacent to an edge of the second light source assembly130to prevent the reflected light from being provided to the diagnosis area540.

The first light source assembly120is disposed in front of the second light source assembly130. In addition, the plurality of first light sources123may be disposed to be spaced a third distance D3from the center of the first light source assembly120.

The third distance D3may be less than or equal to the second distance D2. When the third distance D3is greater than the second distance D2, the first light sources123are excessively disposed at the edge. Thus, a shaded area may occur within the area500of theFIG.5due to the thickness of the front cover101.

When the first light sources123are spaced the third distance D3from each other, since a radius D4of the opening124ais formed to be less than the third distance D3, the radius D4may be less than the second distance D2. Thus, when the plurality of second light sources136disposed behind the first light source assembly120emit light, a portion of the emitted light may not pass through the opening124aand be blocked by the rear surface of the first light source assembly120.

In other words, as the second light sources136are disposed to avoid the provision of the reflected light to the diagnosis area540, a portion of the light emitted from the second light sources136may be blocked by the first light source assembly120to cause a problem in which an amount of light irradiated onto the skin is reduced.

To prevent this, a plurality of sub openings124bformed outside the opening124amay be further formed in the middle inner body121and the first light source mounting plate122of the first light source assembly120. In this case, the opening124amay correspond to the main opening124a.For example, each of the plurality of sub openings124bmay be formed between first light sources123adjacent to each other.

As the plurality of sub openings124bare formed, a blocking rate of the light emitted from the second light sources136disposed behind the first light source assembly120may be effectively reduced, and thus, a sufficient amount of light may be irradiated to the skin to acquire an image having sufficient visibility.

That is, as the plurality of sub openings124bare formed, the second light sources136may be disposed to avoid the provision of the reflected light to the diagnosis area540, and the blocking of the light emitted from the second light sources136by the first light source assembly120may be minimized.

FIG.10is a front view illustrating a state in which the front cover and the side cover of the skin diagnosis device are removed according to an embodiment of the present invention.

Referring toFIG.10, the components in the head10may be formed according to the embodiments described above with reference toFIGS.3to9, and thus, when the head10is viewed from the front side, at least some of the first light source123, the second light source136, the cameras140aand140b,and the laser light source172may be observed.

That is, light (the ultraviolet light, the white light, the laser light) emitted from each of the first light source123, the second light source136, and the laser light source172may be irradiated to the skin through the opening103. In addition, the light reflected from the skin may be incident into the cameras140aand140bthrough the opening103. Thus, the head10having the compact size and provided with the components capable of acquiring the various skin diagnosis information may be provided.

FIG.11ato12bare views for explaining a shape of the front cover for preventing the shaded area is provided on the skin diagnosis area of the image acquired by the camera.

Referring toFIGS.11aand11b, in order to prevent penetration of external light through a gap between the front cover101and the skin or to improve durability of the cover window104, a radius of the opening103may be less than the second distance D2or the third distance D3ofFIG.9.

When a boundary surface of the opening103is formed to be perpendicular to the skin contact surface of the front cover101as illustrated inFIG.11a, or a radius of the boundary surface is formed to gradually increase toward the skin contact surface, a portion of the light emitted to the area including the edge may be blocked by the rear surface of the front cover101.

In this case, as illustrated inFIG.11b, a shaded area1102may be generated on a portion including the edge of the opening103on the images1100acquired by the cameras140aand140b.

When the shaded area1102is provided in the diagnosis area540described above inFIG.5, the accurate diagnosis information may not be acquired due to a difference in brightness within the diagnosis area540.

Referring toFIGS.12ato12b, a chamfered structure101bmay be formed on an inner circumferential surface (the boundary surface of the opening103) of the front cover101according to an embodiment of the present invention in order to solve the above-described problem. That is, a radius of the inner circumferential surface of the front cover101may gradually decrease toward the skin contact surface of the front cover101.

As the chamfer structure101bis formed, the blocking of the light emitted to the area including the edge of the opening103may be minimized, and the shaded area on the image1200acquired by the cameras140aand140bmay be removed, or the surface area of the shaded area may be minimized.

The shaded area may be removed or minimized to prevent the shaded area from being provided on the diagnosis area540, thereby acquiring the accurate diagnosis information.

The above-disclosed subject matter is to be considered illustrative, and not restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments, which fall within the true spirit and scope of the present invention.

Thus, the embodiment of the present invention is to be considered illustrative, and not restrictive, and the technical spirit of the present invention is not limited to the foregoing embodiment.

Therefore, the scope of the present disclosure is defined not by the detailed description of the invention but by the appended claims, and all differences within the scope will be construed as being included in the present invention.