Patent Description:
In general, spectral imaging and spectral image analysis techniques can obtain information on a target, such as a tissue, non-invasively, and thus are useful in diagnosing and analyzing various characteristics of the target. For spectroscopic imaging to obtain information on a target, light beams from a plurality of light sources have to pass through a filter, and then the light beams from the filter have to pass through a polarizing film to be focused on a location of the target. In this case, in order to simultaneously obtain various information on the same target, such a plurality of light sources are required, and light beams from the plurality of light sources need to be focused to one focal point. In addition, in order to more broadly diagnose and analyze the characteristics of the target, it is necessary to provide various types of sensors.

As a related technology, <CIT> discloses a "MULTIBIOMETRIC MULTISPECTRAL IMAGER"
The <CIT> discloses a skin analysis device for attachment to an electronic device of a human user, the electronic device having at least one skin characteristic measurement device, the skin analysis device comprising an enclosure comprising an enclosure body, configured to be removably connected to the electronic device and one or more skin characteristic measurement assisters, connected to the enclosure and configured to assist one or more skin characteristic measurement devices take a skin characteristic sample of a skin characteristic of the human user. The Japanese Patent Application Publication No. <CIT> discloses a medical imaging device including an imaging device body having a first light source, a second light source, an imaging element, and lens groups located on an optical axis OA connecting the imaging element and a subject, and is configured so that at least the first light source is adopted as a light source for irradiating the subject with light in the first imaging state, and at least the second light source is adopted as a light source for irradiating the subject with light in the second imaging state. An irradiation direction L2 of the second light source is set to a direction which is different from an irradiation direction L1 of the first light source, and approaches the optical axis OA.

Accordingly, the present disclosure has been made keeping in mind the above problems occurring in the related art, and an objective of the present disclosure is to provide an image acquisition device for easily diagnosing and analyzing a state of a target.

Another objective according to an embodiment is to provide an image acquisition device for easily measuring characteristics such as temperature, oil/moisture, or elasticity of a target.

Another objective according to an embodiment is to provide an image acquisition device for adjusting an angle of light sources during assembly so that light paths of the light sources intersect with each other toward one focal point.

Another objective according to an embodiment is to provide an image acquisition device that is free from time or location restrictions in diagnosing, measuring, and analyzing a state or characteristic of a target.

Another objective according to an embodiment is to provide an image acquisition device that can be mounted on a portable terminal.

Another objective according to an embodiment is to provide an image acquisition device capable of simultaneously measuring various characteristics of a target through one contact part.

Objectives to be achieved in the embodiments are not limited to those mentioned above, and other objectives not mentioned will be clearly understood by those skilled in the art from the following description.

In order to accomplish the above objectives, an image acquisition device according to an embodiment may include the features as specified in claim <NUM>.

A method of manufacturing an image acquisition device according to an embodiment may include the features as specified in claim <NUM>.

According to an aspect, the method may further include: providing a film receiving part on the light source angle forming part and fastening the film receiving part to the lower part of the body together with the light source angle forming part and the substrate.

An image acquisition device according to another embodiment may include the features as specified in claim <NUM>.

According to an aspect, the measurement module may include: a base fixed to the body; a contact member passing through the base and configured to make direct contact with the target and having a first sensor therein; an elastic member having a first end coupled to a lower end of the contact member; and a support member having a first end coupled to a second end of the elastic member and having a second end in contact with a second sensor. The first sensor may measure the temperature or the oil/moisture of the target, and the second sensor may measure the elasticity of the target from pressure transmitted through the support member when the contact member makes contact with the target.

According to an aspect, the measurement module may include: a base fixed to the body; a first measuring part mounted to the base and configured to measure the temperature of the target; a second measuring part mounted to the base, disposed adjacent to the first measuring part, and configured to measure the oil/moisture of the target; and a third measuring part mounted to the base, disposed adjacent to the first measuring part or the second measuring part, and configured to measure the elasticity of the target. Each of the first measuring part, the second measuring part, and the third measuring part may measure the characteristic of the target by making contact with the target.

According to an aspect, the first measuring part may include a first contact member protruding to outside of an upper part of the body and configured to make direct contact with the target, and the first contact member may be provided with a temperature sensor to measure the temperature of the target.

According to an aspect, the second measuring part may include: a second contact member protrudes to outside of an upper part of the body by passing through the base and configured to make direct contact with the target; an elastic member having a first end coupled to a lower end of the second contact member; and a support member to which a second end of the elastic member is coupled. The second contact member may be provided with an oil/moisture sensor to measure the oil/moisture of the target.

According to an aspect, the third measuring part may include: a third contact member protruding to outside of an upper part of the body by passing through the base and configured to make direct contact with the target; an elastic member having a first end coupled to a lower end of the third contact member; and a support member having a first end coupled to a second end of the elastic member and a second end in contact with a pressure sensor. The elasticity of the target may be measured from pressure generated when the third contact member makes contact with the target is transmitted to the pressure sensor through the support member.

According to an image acquisition device according to an embodiment, it is possible to easily diagnose and analyze a state of a target.

According to the image acquisition device according to the embodiment, it is possible to easily measure characteristics of a target, such as temperature, oil/moisture, elasticity, or the like.

According to the image acquisition device according to the embodiment, it is possible to adjust an angle of light sources during assembly so that light paths of the light sources intersect with each other toward one focal point.

According to the image acquisition device according to the embodiment, it is possible to diagnose, measure, and analyze a state or characteristic of a target without time or location restrictions.

According to the image acquisition device according to the embodiment, it is possible to mount the device on a portable terminal.

According to the image acquisition device according to the embodiment, it is possible to simultaneously measure various characteristics of a target through one contact part.

Effects of the image acquisition device according to the embodiment are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

The accompanying drawings illustrate a preferred embodiment of the present disclosure and, together with the description, serve to explain the principles of the disclosure. Accordingly, the scope of the present disclosure should not be construed as being limited to the embodiment illustrated in the drawings.

Hereinafter, embodiments will be described in detail with reference to exemplary drawings. Like reference numerals are used to identify like elements throughout different drawings. Further, in the following description, if it is decided that the detailed description of known function or configuration related to the disclosure makes the subject matter of the disclosure unclear, the detailed description is omitted.

Further, when describing the components of the present disclosure, terms such as first, second, A, B, (a), or (b) may be used. Since these terms are provided merely for the purpose of distinguishing the components from each other, they do not limit the nature, sequence or order of the components. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or be connected to or coupled to another element, having the other element intervening therebetween.

Elements performing identical functions to elements, which are included in any one exemplary embodiment, will be referred to using the same names in other exemplary embodiments. Unless otherwise specified, the descriptions provided in any one exemplary embodiment may be applicable to exemplary embodiments to be described hereinafter, and repeated descriptions will be omitted.

An image acquisition device <NUM> according to an embodiment is a device that enables a portable terminal to acquire information on a target.

For example, the target may be skin, and an image of the target may be transmitted through an optical device, such as a camera, which may be provided in the portable terminal.

In the present specification, a description will be given of the image acquisition device <NUM> that enables the camera of the portable terminal to acquire an image of the skin condition, i.e., the skin, from light radiated to the skin as the target, and diagnoses and analyzes the characteristics of the skin measured through a sensor by making direct contact with the skin.

<FIG> is a perspective view illustrating the image acquisition device <NUM> according to the embodiment.

Referring to <FIG>, the image acquisition device <NUM> according to the embodiment may include a body <NUM> and a terminal mounting attachment <NUM>.

The body <NUM> may be a part that is in contact with the surface of the target to measure the state or characteristics of the target.

The terminal mounting attachment <NUM> may be compatibly attached to various types of portable terminals, and may allow the body <NUM> to be detachably coupled thereto.

As described above, since the image acquisition device <NUM> is attached to the portable terminal in a form in which the body <NUM> and the terminal mounting attachment <NUM> are coupled to each other, an image of the target is acquired through the camera provided in the portable terminal. In addition, the image acquisition device <NUM> may make direct contact with the skin to diagnose and analyze the characteristics of the skin measured through the sensor, and transmit this information to the portable terminal.

Therefore, a user using the image acquisition device <NUM> can diagnose, measure, and analyze the state or characteristic of the target without time or location restrictions.

<FIG> is an exploded view illustrating the body <NUM> of the image acquisition device <NUM>.

Referring to <FIG>, the body <NUM> may include an upper body part <NUM>, a lower body part <NUM>, a substrate <NUM>, a light source angle forming part <NUM>, a film receiving part <NUM>, and a measurement module <NUM>.

In addition, each of the upper body part <NUM>, the lower body part <NUM>, the substrate <NUM>, the light source angle forming part <NUM>, and the film receiving part <NUM> may have an opening in the center thereof. These respective openings may be arranged to form a concentric circle when assembling each component. This may be a passage for a light beam to enter a camera lens provided in the portable terminal.

The upper body part <NUM> and the lower body part <NUM> may be referred to as a housing constituting the exterior of the body <NUM>, and may be detachably coupled to each other.

A first opening that allows a light beam to be emitted from a light source to the outside through the first opening or to pass through a transparent material through the first opening may be formed in the vicinity of the center of the upper body part <NUM>.

Therefore, the light beam from the light source may be directly exposed to the target, and may be reflected from the target and directed to the camera lens.

A second opening that allows a portion of the measurement module <NUM> to be coupled to the second opening to protrude to the outside from the second opening may be formed in the vicinity of the first opening of the upper body part <NUM>.

Therefore, the portion of the measurement module <NUM> may make direct contact with the target.

The lower body part <NUM> may be fixedly coupled to the upper body part <NUM>.

In addition, a plurality of fixing elements may be provided at a side portion of the lower body part <NUM> to allow the body <NUM> to be mounted to the terminal mounting attachment <NUM> by the fixing elements. For example, the plurality of fixing elements may be hooks or tension protrusions.

A seat part <NUM> that allows the substrate <NUM> to be placed thereon may be formed on the lower body part <NUM>. A plurality of seat parts <NUM> may be provided and may be configured as a plurality of triangular ribs.

The substrate <NUM> is provided with a plurality of light sources <NUM>. Each of the light sources <NUM> may be seated on an associated one of the seat parts <NUM> formed on the lower body part <NUM>.

The light source angle forming part <NUM> may be assembled on the substrate <NUM> so that light paths of the plurality of light sources <NUM> provided on the substrate <NUM> intersect with each other.

The film receiving part <NUM> may be assembled on the light source angle forming part <NUM>, and may receive a polarizing film therein.

An image acquisition module of the image acquisition device <NUM> according to the embodiment, which will be mentioned below, refers to a configuration including the seat parts <NUM>, the substrate <NUM>, and the light source angle forming part <NUM>, and structural and functional features thereof will be described in detail with reference to <FIG> and <FIG>.

The measurement module <NUM> may be fixed to the front of the lower body part <NUM> at a position inside the body <NUM>. In addition, a portion of the measurement module <NUM> may be coupled to the second opening of the upper body part <NUM> to protrude to the outside from the second opening.

Structural and functional features of the measurement module <NUM> will be described in detail below with reference to <FIG> and <FIG>.

<FIG> is a partial exploded view illustrating the image acquisition module.

The image acquisition module may be a part for measuring the state of the target.

The image acquisition module may be a configuration including the seat parts <NUM>, the substrate <NUM>, and the light source angle forming part <NUM>.

The seat parts <NUM> may be the plurality of ribs formed on the lower body part <NUM>. Each of the ribs may be formed at a position corresponding to an associated one of the plurality of light sources <NUM> of the substrate <NUM>.

The plurality of seat parts <NUM> may be circumferentially arranged adjacent to each other around the opening formed in the lower body part <NUM>. The seat parts <NUM> may be disposed to extend in a circumferential direction from the center of the opening when viewed in a plan view, and have a triangular cross-section when viewed in a side view. In other words, the seat parts <NUM> have a shape that increases in height from the center to the periphery. The angle of the light sources <NUM> may be adjusted in response to the amount of change in the height of the seat parts <NUM>.

The substrate <NUM> may include a first substrate and a second substrate that are each provided in the form of a planar plate and are electrically connected to each other.

Specifically, the first substrate may be provided with a control element, and the second substrate may be provided with the plurality of light sources <NUM> on an outer peripheral portion thereof at uniform or non-uniform intervals. In this case, the light sources <NUM> may be LEDs.

The light sources <NUM> may be provided on the second substrate so that respective light paths thereof are parallel to each other.

In addition, the first substrate and the second substrate may be disposed at respective positions inside the main body <NUM>. The first substrate may be disposed vertically with respect to the lower body part <NUM>, and the second substrate may be disposed on the seat parts <NUM> provided on the lower body part <NUM>.

In this case, the outer peripheral portion of the second substrate may be in contact with the seat parts <NUM> so that each of the light sources <NUM> is disposed at a position corresponding to an associated one of the seat parts <NUM>.

The light source angle forming part <NUM> may include an inclined surface <NUM> and a through-hole <NUM>.

Inclined surfaces <NUM> may be circumferentially formed in a chamfered shape on a lower portion of the light source angle forming part <NUM>.

Specifically, the angle of each of the inclined surfaces <NUM> of the light source angle forming part <NUM> may correspond to an angle formed by an inclined plane of each of the seat parts <NUM>. The angle of the second substrate may be adjusted by the inclined surfaces <NUM>.

A plurality of through-holes <NUM> may be provided, and may be circumferentially arranged adjacent to each other along an outer peripheral portion of the light source angle forming part <NUM> around the opening formed in light source angle forming part <NUM>.

Specifically, each of the through-holes <NUM> of the light source angle forming part <NUM> may be formed at a position corresponding to an associated one of the seat parts <NUM> or the light sources <NUM>. Therefore, the light source angle forming part <NUM> may be coupled to the substrate <NUM> so that the light sources <NUM> passes through the through-holes <NUM> while the light paths of the light sources are not blocked by the light source angle forming part <NUM>.

In this case, each of the through-holes <NUM> may be formed to have a size that allows each of the light sources <NUM> to pass through but prevents each outer peripheral portion <NUM> of the substrate <NUM> from passing through. Therefore, the respective outer peripheral portions <NUM> of the substrate <NUM> may be fixed between the light source angle forming part <NUM> and the seat parts <NUM>.

The image acquisition module may further include the film receiving part <NUM>.

As in the case of the light source angle forming part <NUM>, the film receiving part <NUM> may have a plurality of through-holes formed along an outer peripheral portion of the film receiving part <NUM>. In addition, a polarizing film may be received in an upper portion of the film receiving part <NUM>.

Each of the through-holes may be formed at a position corresponding to an associated one of the light sources <NUM>. Therefore, the film receiving part <NUM> may be mounted on the light source angle forming part <NUM> so that the light beams from the light sources <NUM> pass through the polarizing film through the through-holes while the light paths of the light sources <NUM> are not blocked.

Hereinafter, a method of assembling the image acquisition module of the image acquisition device <NUM> according to the embodiment will be described in detail with reference to <FIG>.

<FIG> illustrates that the lower body part <NUM>, the substrate <NUM>, and the light source angle forming part <NUM> are provided to assemble the image acquisition module of the image acquisition device <NUM> according to the embodiment.

Referring to <FIG>, the image acquisition module may be assembled in the order of the lower body part <NUM>, the substrate <NUM>, and the light source angle forming part <NUM>. In addition, the film receiving part <NUM> may be assembled on the light source angle forming part <NUM>.

As described above, the lower body part <NUM> may be provided with the triangular-shaped seat parts <NUM>.

Although omitted from the substrate <NUM> illustrated in <FIG>, the plurality of light sources <NUM> may be provided on the outer peripheral portions <NUM> of the planar plate-shaped substrate <NUM>.

The light source angle forming part <NUM> may have the inclined surfaces <NUM> and the through-holes <NUM> on the lower portion thereof.

<FIG> illustrates that the planar plate-shaped substrate <NUM> is provided on the seat parts <NUM> formed on the lower body part <NUM>.

Referring to <FIG>, the substrate <NUM> may be provided on the lower body part <NUM> so that the outer peripheral portions thereof are in contact with the seat parts <NUM>. In this case, the substrate <NUM> may be disposed on the seat parts <NUM> so that the light paths of the light sources <NUM> are vertical.

<FIG> illustrates that the outer peripheral portions of the substrate <NUM> are bent by the seat parts <NUM> and the light source angle forming part <NUM>.

Referring to <FIG>, after the light source angle forming part <NUM> is disposed on the substrate <NUM>, the light source angle forming part <NUM> may be coupled to the substrate <NUM> so that the entire lower portion thereof, i.e., even the inclined surfaces <NUM>, is in contact with the substrate <NUM>.

Specifically, the substrate <NUM> may be made of a material that is deformable by pressure. The light source angle forming part <NUM> may change the angle of the substrate <NUM> initially provided in the form of a planar plate by pressing the substrate <NUM> with respect to the seat parts <NUM>. The outer peripheral portions of the substrate <NUM> positioned between the seat parts <NUM> and the inclined surfaces <NUM> may be bent according to the inclination of the seat parts <NUM> or the inclined surfaces <NUM>. In other words, the angle of the outer peripheral portions <NUM> of the substrate <NUM> may be adjusted by pressure in response to the angle of the seat parts <NUM> or the inclined surfaces <NUM>, thereby adjusting the angle of the light sources <NUM> provided on the outer peripheral portions <NUM>.

In addition, although not illustrated in <FIG>, the film receiving part <NUM> may be disposed on the light source angle forming part <NUM> and coupled to the lower body part <NUM> together with the substrate <NUM> and the light source angle forming part <NUM>.

Specifically, at least two fastening holes may be formed in the film receiving part <NUM>. Fastening holes may also be formed in each of the lower body part <NUM> and the light source angle forming part <NUM> at positions corresponding to the at least two fastening holes.

Fixing bolts provided from the lower portion of the lower body part <NUM> may be fastened to the fastening holes formed in the film receiving part <NUM> by passing through the fastening holes formed in the lower body part <NUM> and the light source angle forming part <NUM>.

As a result, the angle of the light sources <NUM>, which are initially provided on the substrate <NUM> so that the light paths thereof are parallel to each other, may be adjusted so that the light paths of the light sources <NUM> intersect with each other toward one focal point while the outer peripheral portions <NUM> are bent inward by the seat parts <NUM> or the light source angle forming part <NUM>. In addition, the angle of the light sources may be maintained in an adjusted state by fastening the fixing bolts from the lower body part <NUM> to the film receiving part <NUM>.

Finally, the upper body part <NUM> may be coupled to the lower body part <NUM>, thereby completing the assembly of the body <NUM>. Therefore, the light beams from the light sources <NUM> may pass through the polarizing film received in the film receiving part <NUM> and then be focused toward the first opening formed in the upper body part <NUM>.

The light beams passing through the first opening may be reflected after reaching the surface of the target. The light beams reflected back to the inside of the body <NUM> again pass through sequentially the openings centrally provided in the film receiving part <NUM>, the light source angle forming part <NUM>, the substrate <NUM>, and the lower body part <NUM> to finally be incident on the camera lens provided in the portable terminal. The camera may acquire an image of the target by the incident light beams. The acquired image may be output to a screen of the portable terminal, so that the user can check the state of the target through the acquired image.

<FIG> is an exploded view illustrating the measurement module <NUM>.

<FIG> is a sectional view illustrating a third measuring part <NUM>.

The measurement module <NUM> may be a part for measuring various characteristics such as temperature, oil/moisture, and elasticity of the target. As described above, the measurement module <NUM> may be disposed on the front of the lower body part <NUM> at a position inside the body <NUM>, and a portion of the measurement module <NUM> may protrude outward through the second opening of the upper body part <NUM> in order to measure various characteristics of the target.

Specifically, the measurement module <NUM> may include a base <NUM>, a first measuring part <NUM>, a second measuring part <NUM>, and the third measuring part <NUM>.

The base <NUM> may support the first measuring part <NUM>, the second measuring part <NUM>, and the third measuring part <NUM>, with a lower end thereof fixed to the body.

The base <NUM> may have an upper portion coupled to the second opening formed in the upper body part <NUM>. In addition, at least one coupling hole may be formed in the upper portion of the base <NUM>, so that a contact member of each of the first measuring part <NUM>, the second measuring part <NUM>, and the third measuring part <NUM> may protrude to the outside of the body <NUM> through the coupling hole.

The first measuring part <NUM>, the second measuring part <NUM>, and the third measuring part <NUM> may make direct contact with the target to measure the characteristics of the target.

The first measuring part <NUM> may measure the temperature of the target, and may be mounted to the base <NUM> through as associated one of a plurality of coupling holes formed in the base <NUM>.

Specifically, the first measuring part <NUM> may include a first contact member and a temperature sensor.

The first contact member may protrude to the outside of the upper body part <NUM> by passing through the base <NUM> and may make direct contact with the target. In this case, the first contact member may be formed in a dome shape with a smooth surface.

The temperature sensor may be located on the surface or inside of the first contact member, and may measure the temperature of the target. In this case, the first contact member may be made of a material having high thermal conductivity for accurate temperature measurement of the temperature sensor.

The second measuring part <NUM> may measure the oil/moisture of the target, and may be mounted to the base <NUM> through an associated one of the coupling holes of the base <NUM> so as to be disposed adjacent to the first measuring part <NUM>.

Specifically, the second measuring part <NUM> may include a second contact member, an oil/moisture sensor, an elastic member, and a support member.

The second contact member may protrude to the outside of the upper body part <NUM> by passing through the base <NUM> and may make direct contact with the target. The second contact member may also be formed in a dome shape with a smooth surface.

The oil/moisture sensor may be located on the surface or inside of the second contact member, and may measure the oil/moisture of the target.

The elastic member may have a first end coupled to a lower end of the second contact member and a second end coupled to an upper end of the support member.

The support member may have an upper portion coupled to a lower end of the elastic member, and a lower portion in contact with the lower body part <NUM>.

Referring to <FIG>, the third measuring part <NUM> may measure the elasticity of the target, and may be mounted to the base <NUM> through an associated one of the coupling holes of the base <NUM> so as to be disposed adjacent to the first measuring part <NUM> or the second measuring part <NUM>.

Specifically, the third measuring part <NUM> may include a third contact member <NUM>, an elastic member <NUM>, a support member <NUM>, and an elasticity sensor <NUM>.

The third contact member <NUM> may protrude to the outside of the upper body part <NUM> by passing through the base <NUM> and may make direct contact with the target. The third contact member <NUM> may also be formed in a dome shape with a smooth surface.

The elastic member <NUM> may have a first end coupled to a lower end of the third contact member <NUM> and a second end coupled to an upper end of the support member <NUM>.

The support member <NUM> may have an upper portion coupled to a lower end of the elastic member <NUM>, and a lower portion in contact with the elasticity sensor <NUM>.

The elasticity sensor <NUM> may be provided on the lower body part <NUM>, and may measure the elasticity of the target.

The elasticity sensor <NUM> may receive pressure through the support member <NUM>, the pressure being generated when the third contact member <NUM> makes contact with the target. The elasticity sensor <NUM> may measure the elasticity of the target from the pressure value.

The measurement module <NUM> according to the above-described embodiment has been described as a configuration in which the first measuring part <NUM>, the second measuring part <NUM>, and the third measuring part <NUM> individually measure various characteristics of the target, such as temperature, oil/moisture, and elasticity. However, the measurement module <NUM> may be provided with an integrated third measuring part <NUM> so that one measuring part can simultaneously measure the characteristics of the target that can be measured by the first measuring part <NUM>, the second measuring part <NUM>, and the third measuring part <NUM>.

In such a case, referring back to <FIG>, the third measuring part <NUM> may further include a first sensor <NUM>.

The first sensor <NUM> may be provided on the surface or inside of the third contact member <NUM>, and may make direct contact with the surface of the target. In addition, the first sensor <NUM> may be provided as a temperature and oil/moisture sensor <NUM> to measure the temperature or the oil/moisture of the target.

A second sensor <NUM> may be located at a lower end of the support member <NUM>, and may be provided as an elasticity sensor <NUM>. In addition, the second sensor <NUM> may measure the elasticity of the target from the pressure transmitted to the support member <NUM> when the contact member <NUM> makes contact with the target.

Therefore, the measurement module <NUM> including the integrated measuring part <NUM> has the effect of simultaneously measuring various characteristics of the target through one contact part.

As a result, the image acquisition device <NUM> having the above-described constituent elements can easily diagnose and analyze the state of the target through the image acquisition module, and can easily measure characteristics such as temperature, oil/moisture, or elasticity of the target through the measurement module.

In addition, anyone using the image acquisition device <NUM> can easily diagnose, measure, and analyze the state or characteristic of the target without time or location restrictions.

Claim 1:
An image acquisition device (<NUM>) comprising:
a body (<NUM>);
one or more seat parts (<NUM>) provided on a lower part (<NUM>) of the body (<NUM>);
a substrate (<NUM>) disposed on the one or more seat parts (<NUM>) inside the body (<NUM>) and having a plurality of light sources (<NUM>); and
a light source angle forming part (<NUM>) disposed on the substrate (<NUM>) inside the body (<NUM>),
wherein the one or more seat parts (<NUM>) is formed at a position corresponding to each of the plurality of light sources (<NUM>), and has a triangular cross-section, i. e. the one or more seat parts (<NUM>) have a shape that increases in height from the center of the substrate (<NUM>) to an outer peripheral portion (<NUM>) of the substrate (<NUM>),
wherein the plurality of light sources (<NUM>) are disposed on the outer peripheral portion (<NUM>) of the substrate (<NUM>),
wherein the light source angle forming part (<NUM>) has an inclined surface corresponding to each of the one or more seat parts (<NUM>), and a through-hole allowing each of the plurality of light sources (<NUM>) to pass therethrough, wherein the substrate (<NUM>) is provided on the one or more seat parts (<NUM>) in the form of a planar plate, and the outer peripheral portion (<NUM>) of the substrate (<NUM>) positioned between the one or more seat parts (<NUM>) and the light source angle forming part (<NUM>) is bent according to the inclination of the one or more seat parts (<NUM>) as the light source angle forming part (<NUM>) presses the substrate (<NUM>), so that the light sources (<NUM>) are directed toward one focal point by the one or more seat parts (<NUM>) and the light source angle forming part (<NUM>),
wherein the outer peripheral portion (<NUM>) of the substrate (<NUM>) is bent so that light paths of the light sources (<NUM>) intersect with each other by the one or more seat parts (<NUM>) or the light source angle forming part (<NUM>).