KR101901573B1 - Light guide device for photometric imaging - Google Patents

Abstract

The present invention relates to a light guiding apparatus for photographing a photometric image, and more particularly, to a light guiding apparatus for photographing a photographic image by providing a light emitted from a conventional optical head unit to an object at an angle of 90 degrees, By providing a light guide device including a light tunnel injection part capable of securing a light path of less than 90 degrees by improving the problem that shape and texture can not be provided, it is possible to acquire an image providing a fine surface shape and texture in a three- The present invention relates to a light guide apparatus for photographing a photometric image.

Description

[0001] The present invention relates to a light guide device for photometric imaging,

The present invention relates to a light guiding apparatus for photographing a photometric image, and more particularly, to a light guiding apparatus for photographing a photographic image by providing a light emitted from a conventional optical head unit to an object at an angle of 90 degrees, By providing a light guide device including a light tunnel injection part capable of securing a light path of less than 90 degrees by improving the problem that shape and texture can not be provided, it is possible to acquire an image providing a fine surface shape and texture in a three- The present invention relates to a light guide apparatus for photographing a photometric image.

The three-dimensional shape extraction technique is a digital technology for extracting a three-dimensional shape of an object existing in a real world. In the case of a method of presenting a three-dimensional shape of a target object by hand based on conventional computer graphics, It is time-consuming to produce a three-dimensional model by hand, and there are disadvantages in that there are many differences in quality depending on the skill of a designer. In the case of modeling an object existing in the real world,

In order to solve such a problem, a three-dimensional shape extraction technique has already been used in many applications.

In the case of the contact-type three-dimensional shape extraction, a three-dimensional coordinate system is measured in a state in which the measurement area of the object to be restored is in contact with the measuring sensor. In this case, Although measurement data can be obtained, it is not possible to measure in the case of a deformed object or a high temperature object when a pressure is applied. As an alternative to this, a noncontact 3D shape extraction technique is proposed.

Non-contact 3D shape extraction technology is a method of extracting three-dimensional shape using light reflected or transmitted from an object. In many industrial fields, the product itself or the three-dimensional shape of the surface is extracted in real- The development of the technology for the system that can be used is continuously required.

The Phometric Stereo technique is a technique that sequentially applies multiple lights to a target object and extracts the three-dimensional shape of the object using at least three images acquired through the camera. The more the number of lights, the more reliable The three-dimensional shape of the object can be extracted.

In recent years, a three-dimensional image has been applied to three images obtained by simultaneously illuminating an RGB camera and three different wavelength bands of R (red), G (green), and B (blue) A technique for extracting information has been developed.

On the other hand, as interest in skin beauty increases, many users check the condition of the skin through various routes such as a skin care room, a massage shop, and a dermatologist, and manage the skin by using appropriate cosmetics or medicines.

People's skin condition varies greatly according to the seasons, and individual differences are so severe that accurate diagnosis is the most important for proper prescription.

In order to diagnose the skin condition, specialist medical equipments are provided in the dermatologist's clinic and the clinic, and the diagnosis act such as photographing the enlarged pores is possible.

However, due to the increased interest in skin care, the level of knowledge about the skin of the user has also increased, and users have been wishing to know more about their skin condition or skin condition changes.

Nevertheless, it is very troublesome to regularly visit the clinic in order to monitor the condition of the skin and to understand the change in the use of beauty products.

Therefore, it is necessary to provide a method for enabling users to easily check and diagnose their skin condition while carrying it.

In addition, a camera, a sensor, and the like, which provide comprehensive information about the conventional skin, are merely manually contacted by the operator to photograph the skin and obtain information.

In addition, when measuring the approximate state of the face skin, a 2D image is acquired and analyzed using a high-resolution camera. In order to obtain comprehensive information on the facial skin, a contact- There was a hassle to re-shoot.

In such a case, there has been a problem in that a face is separated from the device after the facial skin photographing in front of the high-resolution camera, and then the contact type local photographing camera is manually brought into close contact with the photographer.

Meanwhile, recently, cosmetics stores, dermatologists, and skin care shops have been able to measure and diagnose their own skin conditions to make it easier to select cosmetics that match their skin condition, or to find problems in their skin conditions and to find solutions There are various types of skin diagnostic devices that can help you find.

Among them, a skin diagnosis apparatus using a diagnostic lamp for diagnosing a skin condition by analyzing a specific fluorescence color represented by the skin irradiated with light of a specific wavelength to the skin and irradiating the skin with the light ray is often used.

An ultraviolet lamp is mainly used as the diagnostic lamp.

In a conventional skin diagnostic apparatus using an ultraviolet lamp, it is necessary to darken the surroundings when ultraviolet rays are irradiated so that ultraviolet rays can be efficiently irradiated to a desired skin region.

Accordingly, in particular, a facial skin condition diagnosis apparatus, which is commonly found in a cosmetics shop, is equipped with a diagnosis lamp in a box opened in the front face, and a cylindrical black cloth in which light is not transmitted well along the outer peripheral face of the open front face of the box A subject who wants to undergo diagnosis of the skin condition surrounds the cloth with his / her head and brings his / her face close to the box equipped with the diagnostic lamp so as to darken the surroundings so as to measure and diagnose the skin condition.

In such a conventional skin diagnosis apparatus, there is a possibility that measurement and diagnosis can not be efficiently performed due to insufficient assurance of darkening, and since the subject has to wear a cloth around his / her head as described above, Or it can be a hassle for such a process.

Further, when the cloth is torn or dirty, there is a need to frequently replace it.

On the other hand, as shown in Fig. 1, a light guiding apparatus to be attached to a conventional skin diagnosis apparatus is shown.

As shown in FIG. 1, the conventional light guide device 10 is used. For example, even when one LED is lit, light is transmitted through the light guide device to the adjacent surface to obtain a three- Optical section (group) control for photometry imaging was not possible.

Therefore, it was impossible to acquire images providing a fine three-dimensional surface shape and texture.

That is, it is impossible to acquire a directional image, so that it is impossible to express a three-dimensional fine surface shape and texture. For example, when applied to a human body, it is impossible to analyze the fine surface shape and texture of skin texture or wrinkles.

In summary, it is impossible to express the shape and texture of the three-dimensional micro-surface because it removes the fine surface shape due to diffuse reflection or total reflection.

Accordingly, in the present invention, by providing a light guide device in which a plurality of light tunnel injection parts are formed at regular intervals, it is possible to control the light section for photometry imaging and to perform photometry imaging that provides a fine three- And to provide a light guide device for the light guide.

(Patent Document) Korean Patent Laid-Open Publication No. 10-2014-0131152

SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a method and apparatus for providing light to a subject at an angle of 90 degrees from a conventional optical head, It is possible to provide a light guide device including a light tunnel emission portion formed with a plurality of regular intervals capable of securing an optical path of less than 90 degrees by solving the problem that a fine surface shape and texture can not be provided in a dimensional shape, So as to obtain an image providing a fine surface shape and texture.

The second object of the present invention is to provide a lower hole 120 having a smaller diameter than the upper hole 110 formed on the upper side and a lower hole 120 having a smaller diameter than the upper hole 110 formed on the upper side, And a light tunneling unit (200) for providing a light path for emitting the light irradiated from the optical head unit to the surface of the object from the formed horizontal surface (130) to the outer peripheral surface (125) of the lower hole, The light irradiated toward the object in the head portion is prevented from totally reflecting or diffusing out the light irradiated toward the object in the optical head portion out of the light tunnel emitting portion 200, So as to obtain an image providing a fine three-dimensional surface shape and texture.

That is, by providing a light guide device for guiding light by a light tunnel emitting unit so as to obtain three-dimensional surface image information of a target object by using various wavelength ranges and various light paths in acquiring image information, And acquire the micro-contour information of the characteristic and the object, and to provide it in a three-dimensional shape.

In order to accomplish the object of the present invention, there is provided a photometric imaging apparatus for inserting an optical head unit 10 for providing light onto a surface of a target object according to the first embodiment of the present invention, The light guide device 100 for the light-

A lower hole 120 having a diameter smaller than that of the upper hole 110 formed on the upper side is formed on the lower side,

And a light tunnel emission unit 200 for providing a light path for emitting the light emitted from the optical head unit to the surface of the object from the horizontal surface 130 formed on the outer surface 115 of the upper hole to the outer peripheral surface 125 of the lower hole.

According to the present invention, there is provided a light guide apparatus for photographing a photometric image,

The light emitted from the conventional optical head unit is provided to the object at an angle of 90 degrees to improve the problem that it is impossible to provide a fine surface shape and texture within the three-dimensional shape due to the image photographing, It is possible to acquire an image providing a fine surface shape and texture in a three-dimensional shape by providing a light guide device including a light tunnel injection portion that can be used for a light source.

A lower side hole 120 having a diameter smaller than that of the upper side hole 110 formed on the upper side is formed on the lower side and a horizontal plane 130 formed on the outer peripheral side surface 115 of the upper side hole is formed. And a light tunneling unit (200) for providing the light path for emitting the light irradiated from the optical head unit to the surface of the object from the outer surface (125) of the lower hole to the object side It is possible to control the light section (group) for photographing the photometric image by preventing the light radiated to the object from the optical head unit from being totally reflected or diffused out of the light tunnel emission unit 200, It is possible to acquire an image providing a three-dimensional surface shape and texture.

That is, by providing a light guide device for guiding light by a light tunnel emitting unit so as to obtain three-dimensional surface image information of a target object by using various wavelength ranges and various light paths in acquiring image information, Characteristics and the micro-contour information of the object are obtained, and it is possible to provide the three-dimensional shape.

Therefore, the present invention can be utilized in various industrial fields for obtaining accurate surface image information.

Also, in acquiring the image information by mixing the stereo camera and the photometric stereo, it is possible to acquire the three-dimensional surface image information of the object using various light paths by the light tunnel injection part, Can be obtained.

As an embodiment, if the object is a human face, a more accurate skin condition can be diagnosed, thereby making it possible to prevent skin diagnosis errors.

In addition, since a light guiding device having a simple structure is provided, illumination is provided so as to obtain an image for diagnosis of a surface of a target object, skin troubles and conditions can be confirmed at various wavelength ranges, and minute surface information So that it is possible to check the condition such as fine lines and spots.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a photograph showing a light guide device mounted on a conventional skin diagnosis device. FIG.
FIG. 2A is a perspective view of a light guide apparatus for photographing a photometric image according to a first embodiment of the present invention, FIG. 3A is a bottom perspective view,
FIG. 2B is a perspective view of a light guide apparatus for photographing a photometric image according to a second embodiment of the present invention, and FIG. 3B is a bottom perspective view.
FIG. 4 is a side view of a light guide apparatus for photographing a photometric image according to an embodiment of the present invention, FIG. 5 shows reflection coating on an outer circumferential surface or an inner circumferential surface of a light tunnel injection unit, 6 is an exemplary view showing that the optical path is not totally or irregularly reflected out of the light tunnel exit portion, and FIG. 7 is an exemplary view showing a light path that is emitted during section control of the optical head for photographing a photometric image.
8 is a conceptual diagram of a light guide device for photographing a photometric image according to a second embodiment of the present invention.

The following merely illustrates the principles of the invention. Therefore, those skilled in the art will be able to devise various apparatuses which, although not explicitly described or illustrated herein, embody the principles of the invention and are included in the concept and scope of the invention.

Furthermore, all of the conditional terms and embodiments listed herein are, in principle, only intended for the purpose of enabling understanding of the concepts of the present invention, and are not to be construed as limited to such specifically recited embodiments and conditions do.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a light guiding apparatus for photographing a photometric image according to an embodiment of the present invention will be described in detail.

FIG. 2A is a perspective view of a light guide apparatus for photographing a photometric image according to a first embodiment of the present invention, FIG. 3A is a bottom perspective view,

FIG. 2B is a perspective view of a light guide apparatus for photographing a photometric image according to a second embodiment of the present invention, and FIG. 3B is a bottom perspective view.

As shown in FIGS. 2A to 3B, a light guide device for photographing a photometric image according to a first embodiment of the present invention includes an optical head 10 for providing light to a surface of a target, As shown in FIG.

In order to provide the function as described above, the light guide device 100 of the present invention is formed in such a shape that the diameter becomes narrower toward the lower part, and the lower hole (120) having a smaller diameter than the upper hole ).

The shape having a smaller diameter toward the lower part means various shapes such as a hemisphere, a cone, a triangle, and a quadrangle, and is preferably formed in a hemispherical shape as shown in the example of the present invention.

In case of hemispherical shape, it is the most optimal shape for mass production because it is manufactured as one body.

And a light tunnel injection unit 200 for providing a light path for outputting the light irradiated from the optical head unit to the surface of the object from the horizontal surface 130 formed on the outer surface 115 of the upper hole to the outer peripheral surface 125 of the lower hole .

That is, as shown in FIGS. 2A to 3B, in the case of the upper hole, it is formed to be larger than the diameter of the lower hole, so that the light can be focused.

The upper hole is a space in which a camera for photographing an image is located.

In the case of the light tunnel injection part 200, a tube filled with an elongated shape such as a cylindrical shape or a tube not filled with the inside can be used. However, it is preferable to use a light tunnel injection hole .

At this time, the light tunnel injection part for providing the light path can be modified into various forms using a material or shape, and even if a light guide device including any light tunnel injection part is formed, it will be within the scope of the present invention.

However, the most preferred embodiment is to provide a light path through the light tunnel injection hole as shown in the drawing.

In addition, the light tunnel injection unit 200 may include:

One side is formed at a position of the horizontal plane 130 parallel to the position of each light source 15 formed in the optical head part, and at least two or more are formed at predetermined intervals.

As shown in FIG. 2A, a plurality of light sources 15 are formed at a predetermined interval in the optical head, and a plurality of light sources 15 are arranged parallel to the light source on a horizontal plane 130, At least two or more of the light tunnel injection parts 200 are formed at a predetermined spacing.

In the lower hole 120,

The angle of the light emitted from the light tunnel exit part 200 to the surface of the object is determined according to the angle of the outer circumferential surface 125.

As shown in FIG. 3A, it can be seen that the outer circumferential surface 125 of the lower hole is formed at a certain angle, and the end of the light tunnel injection portion is formed at the same angle on the outer circumferential surface.

For example, it is formed at an angle of less than 90 degrees. If the lower hole is inclined at an angle of 45 degrees, the outer circumferential surface is inclined at an angle of 45 degrees.

Therefore, by providing a light angle of less than 90 degrees as shown in FIG. 4, a fine shape or texture of the surface of the object can be provided at the time of imaging.

Conventionally, as shown in FIG. 1, light is guided by a light source in a vertical direction (90 degrees) to provide a fine three-dimensional surface shape and texture because shadows and the like are not properly displayed I can not.

That is, it is impossible to acquire a directional image, so that it is impossible to express a three-dimensional fine surface shape and texture. For example, when applied to a human body, it is impossible to analyze the fine surface shape and texture of skin texture or wrinkles.

However, as described above, when the diameter and the light tunnel are reduced toward the bottom, the angle of the light finally emitted through the outer circumferential surface 125 is less than 90 degrees, so that a shadow is formed and a directional image can be obtained .

Meanwhile, in accordance with an additional aspect, the light tunnel injection portion 200 may include:

Reflective coating 250 is performed.

That is, as shown in FIG. 5, reflection coating can be performed on the outer circumferential surface or the inner circumferential surface of the light tunnel injection portion 200.

For example, if the light tunnel injection part is formed of a transparent tube, reflection coating can be applied to the inner circumferential surface or the outer circumferential surface, and if the light tunnel injection part is formed as a light tunnel injection hole, reflection coating is performed on the outer circumferential surface of the light tunnel injection hole.

Therefore, when the light tunnel emitting portion is treated with the reflective coating, the light provided by the optical head portion is not transmitted toward the other light tunnel emitting portion, that is, no total reflection or diffuse reflection occurs, So that diffuse reflection or total reflection does not occur.

The material of the reflective coating may be any material that is generally used in the optical field.

According to another aspect of the present invention, there is provided a light guiding apparatus for photographing a photometric image,

A plastic material, a silicon material, and a material having a transmittance of 40% or more.

That is, the light guide device of the present invention is most preferably a plastic material or a silicon material in order to provide an injection method capable of mass production, but it is possible to use a material having a transmittance of 40% or more, for example, glass or synthetic resin Is also irrelevant.

On the other hand, in the light guide device of the present invention,

It is possible to control the light section (group) for photometry imaging by making the light emitted from the optical head unit 10 not to be totally reflected or diffusedly reflected off the light tunnel emission unit 200, It is possible to acquire an image providing shape and texture.

That is, as shown in Figs. 4 to 5, light irradiated toward the object in the optical head 10 is not transmitted through the light tunnel emission portion 200 (no total reflection or diffuse reflection occurs) , And the diameter of the light decreases toward the lower side, so that the angle of the finally emitted light can be kept less than 90 degrees.

As shown in the drawing, the light is not provided on the upper side, but is provided on the side.

This makes it possible to take directional images.

Specifically, as shown in FIG. 6, when the light tunnel injection portion 200 is formed, most of the light is provided to the object through the injection surface formed on the lower side, that is, the lower outer peripheral surface 125.

As a result, the light irradiated toward the object in the optical head unit 10 is prevented from totally reflecting or diffusing out of the light tunnel emission unit 200, so that light section (group) control for photometry image capturing becomes possible, Dimensional surface shape and texture.

For example, referring to FIG. 7, a light source formed on the optical head 10 is described as an LED. The light source includes an LED group 10A formed in a first section (group) Only the LED group 10B is lit and the LED group 10A formed in the first section (group) is turned on when the LED group 10C formed in the third section and the LED group 10D formed in the fourth section are in the OFF state, The light illuminated by the LED group 10B formed on the second section provides light to the surface of the object by the outer peripheral surface 125C formed on the lower side along the light tunnel emitting portion 200C, Light is provided to the surface of the object by the outer peripheral surface 125D formed on the lower side along the tunnel injection portion 200D.

At this time, since the outer circumferential surface 125 exists in each light tunnel exit part, the light interference, that is, the total reflection or the diffuse reflection does not occur, so that even if one LED, which is a problem of the related art, It is possible to solve the problem that the optical section (group) control for photometry imaging for obtaining a three-dimensional image is impossible.

For example, when section A is turned on for the first time, light is provided to the surface of the object by the outer circumferential surface 125C, and when the B section is turned on after 0.5 seconds, light is emitted to the surface of the object by the outer circumferential surface 125D When the sections A and B are turned on after 1 second, the outer circumferential surface 125C and the outer circumferential surface 125D simultaneously provide light to the surface of the object.

Accordingly, when the illumination control is performed for each section as described above, the optical path is changed, so that the illumination for obtaining the photometric image is provided.

In general, illumination control for each section is essential for photographing a photometric image. However, since conventional beam guide apparatuses can not control illumination for each section and totally diffuse or totally reflect light, when one light source is turned on, I will reveal.

Therefore, in the conventional case, it is impossible to provide illumination for each section according to the section control.

To be more specific, although the conventional light guide apparatus performs light control for each section in the optical head unit, the light provided by the light guide apparatus affects the adjacent region, so that the light guide apparatus can be used in a target object It was impossible.

However, since the photometric image capturing for providing the three-dimensional shape necessarily requires illumination control for each section, the optical guiding apparatus of the present invention has been proposed. Thus, the photometric image capturing according to the section- So that it is possible to acquire more accurate and detailed fine surface images.

Specifically, when the apparatus is configured in the skin diagnosis apparatus, it is possible to grasp the shape of a skin trouble or a condition by acquiring an image in a direction of light according to each section illumination control, that is, a light path is different.

For example, it is possible to acquire the skin contour information such as the shape of the pores such as the pores are dented or the pores are dense, and the skin texture direction, wrinkle shape and acne shape information.

8 is a conceptual diagram of a light guide device for photographing a photometric image according to a second embodiment of the present invention.

Meanwhile, the light guide device for photographing a photometric image according to the second embodiment of the present invention includes a lower hole 120,

The angle of the outer circumferential surface 125 is set to be different for each section so that the angle of the light emitted to the surface of the object from the light tunnel injection portion 200 formed at a certain interval on the outer circumferential surface (the wall surface 125 around the injection hole) .

As shown in FIG. 8, when the light is LED, the horizontal surface 130 formed on the outer peripheral surface 115 of the upper hole on which the optical head is mounted maintains a uniform angle, for example, a horizontal angle. However, If the outer circumferential surface 125 of the narrower lower hole, that is, the wall surface around the injection hole, is formed differently from each other, the outgoing angle is different.

Preferably, when the angles are different for each predetermined section, the angle of emitted light will be different.

For example, the portion forming the outer circumferential surface of the A section is formed at an angle of 45 degrees, and the angle of b is formed at an angle of 15 degrees.

Then, C forming the outer circumferential surface of the B section is formed at an angle of 45 degrees, and D is formed at an angle of 15 degrees.

The outer circumference of the C section is formed at an angle of 45 degrees and the angle of 15 degrees.

Then, the angle forming the outer circumferential surface of the D section is formed at an angle of 45 degrees and the angle of 15 degrees.

Therefore, ⓐ, ⓒ, ⓔ, ⓖ will be emitted at 45 degree angle, and ⓑ, ⓓ, ⓕ, ⓗ will be emitted at 15 degree angle.

As described above, the section control is possible, and at the same time, the angle of the light emitted from the corresponding section is varied at the same time, so that various directional images can be obtained.

5, the outer circumferential surface of the A section can be formed at an angle of 45 degrees, and the outer circumferential surface can be formed at an angle of 30 degrees.

Although only two angles are described as an example in the above example, it is obvious that the angle of the exit surface, that is, the outer circumferential surface 125 can be controlled for each section to provide a plurality of angles as required.

For example, each light tunnel injection at 5 degree intervals such as 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, It is possible to form the outer circumferential surface of the periphery of the portion in which the portion is located with a different angle, and it can be formed at an interval of 5 degrees or less and 5 degrees or more.

According to the present invention, it is possible to provide a target object with light emitted from a conventional optical head unit at an angle of 90 degrees, thereby making it impossible to provide a fine surface shape and texture within a three- It is possible to obtain an image providing a fine surface shape and a texture in a three-dimensional shape by providing a light guide device including a light tunnel injection portion capable of securing an optical path of the light.

A lower side hole 120 having a diameter smaller than that of the upper side hole 110 formed on the upper side is formed on the lower side and a horizontal plane 130 formed on the outer peripheral side surface 115 of the upper side hole is formed. And a light tunneling unit (200) for providing the light path for emitting the light irradiated from the optical head unit to the surface of the object from the outer surface (125) of the lower hole to the object side It is possible to control the light section (group) for photographing the photometric image by preventing the light radiated to the object from the optical head unit from being totally reflected or diffused out of the light tunnel emission unit 200, It is possible to acquire an image providing a three-dimensional surface shape and texture.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

100: Light guide device
200: light tunnel injection part

Claims (8)

A light guide apparatus for providing light forward by fitting an optical head unit (10) for providing light to a surface of a target object,
The light guide device (100)
A lower hole 120 having a diameter smaller than that of the upper hole 110 formed on the upper side is formed on the lower side,
And a light tunnel emission unit 200 for providing a light path for emitting the light emitted from the optical head unit to the surface of the object from the horizontal surface 130 formed on the outer surface 115 of the upper hole to the outer peripheral surface 125 of the lower hole. And,
The light tunnel injection unit 200,
Wherein at least one of the plurality of light sources is formed at a position of a horizontal plane (130) parallel to a position of each light source (15) formed in the optical head unit, Device.

delete The method according to claim 1,
In the lower hole 120,
Wherein the angle of light emitted from the light tunnel exit part (200) to the surface of the object is determined according to the angle of the outer circumferential surface (125).
The method according to claim 1,
It is possible to control the light section (group) for photometry image capturing by preventing the light irradiated from the optical head part in the direction of the object to be totally reflected or diffused reflection out of the light tunnel emitting part 200, Wherein the image capturing device is capable of capturing an image providing a photographic image.
The method according to claim 1,
In the lower hole 120,
The angle of the outer circumferential surface 125 is set to be different for each section so that the angle of the light emitted to the surface of the object from the light tunnel injection portion 200 formed at a certain interval on the outer circumferential surface (the wall surface 125 around the injection hole) Wherein the light guide device comprises: The method according to claim 1,
The light guiding device for photographing the photometric image comprises:
Wherein the light guide member is made of any one material selected from the group consisting of a plastic material, a silicon material, and a material having a transmittance of 40% or more.
The method according to claim 1,
The light tunnel injection unit 200,
Wherein a reflective coating (250) is performed.
The method according to claim 1,
The light tunnel injection unit 200,
Wherein the light guiding hole is a light tunnel injection hole.

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