KR20190056785A - Nondestructive quality measurement equipment using near-infrared spectroscopy - Google Patents

Abstract

The present invention relates to a non-destructive quality measuring device using a near-infrared spectroscopy comprising: a light source part for irradiating near-infrared lights to an object to be measured; the detector part for receiving the light reflected from the object by the near-infrared lights irradiated from the light source part; and a mounting unit on which the object is mounted and whose lower shape changes according to a weight of the object. Therefore, an objective of the present invention is to provide the non-destructive quality measuring device using the near-infrared spectroscopy which measures an accurate quality characteristic of the object by irradiating light to the object by including a mounting unit and a cover unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a non-destructive quality measuring apparatus using near-infrared spectroscopy,

The present invention relates to a non-destructive quality measuring apparatus using near-infrared spectroscopy.

For high value-added agricultural products, it is necessary to select the harvested agricultural products by quality grade. Conventionally, most of the quality of agricultural products during the post-harvest processing process has been selected by weight or color, but these sizes and colors often fail to adequately represent the quality of agricultural products, and the accuracy of grading is also subjective. Research is underway on a system for measuring internal quality of agricultural products in a non-destructive manner for objective and accurate grading. The non-destructive quality measuring device uses the principle of absorbing light of a specific wavelength within the agricultural product such as sugar content, acidity, etc., and mainly measures the light amount of the light of the light which transmitted the near infrared rays through agricultural products, The quality is measured.

The non-destructive quality measuring apparatus can be largely classified into a combat over-feed type, a transflective type, and a reflection type depending on the arrangement of the light emitting portion and the light receiving portion. The combat overeating is a method in which the light emitting portion and the light receiving portion are arranged opposite to each other with the agricultural product disposed therebetween, and the light emitted from the light emitting portion is transmitted through the agricultural product and received in the light receiving portion in the opposite direction. The light emitting part and the light receiving part are disposed at the same position, and the light reflected from the light emitting part is transmitted through the agricultural product and returns to the light receiving part. In the light receiving part, It is a way to accept.

In general, a near-infrared spectroscopic analysis technique for measuring the sugar content of fruits in a non-destructive manner includes a light-emitting portion having a broad-band wavelength, which is a means for irradiating light inside the fruit, and a light- Use a sugar content meter. The correlation between the fruit sugar content and the absorbed wavelength spectrum obtained from this is made by regression analysis, Math Preprocessing, and Calibration Model Equation using the correction formula to destroy fruit or juice The physical and chemical properties of fruits such as sugar content, acidity, and internal defects can be measured nondestructively. The prior art relating to a spectroscopic analyzer for measuring the sugar content of fruits is disclosed in the Japanese Patent Laid-Open No. 10-2004-0015157.

Conventional near-infrared spectroscopic techniques have been problematic in that the measurement result is inaccurate because light is not blocked from the outside, and the measured value of total sugar content, acidity, etc., And there is a problem such as laceration of the skin caused by strong direct irradiation of the lamp.

An object of the present invention is to provide a non-destructive quality measuring apparatus using a near-infrared spectroscopic method for measuring the accurate quality characteristic of a subject by irradiating light on the subject by including a seat unit and a cover portion do.

The technical object of the present invention is not limited to the above-mentioned technical objects and other technical objects which are not mentioned can be clearly understood by those skilled in the art from the following description will be.

In order to achieve the above object, the apparatus for measuring non-destructive quality using near-infrared spectroscopy according to the present invention comprises a light source unit for irradiating a near infrared ray to a subject, a light source unit for receiving near infrared rays irradiated from the light source, A detector unit, and a seat unit on which the subject is seated and whose lower shape changes depending on the weight of the subject.

The light source unit may be located below the seating unit, and may be positioned symmetrically on both sides of the detector unit.

Wherein the seating unit includes a cylindrical portion having a larger diameter toward the upper portion and an elastic portion integrally formed with the side portion and extending in a hemispherical shape upward from the lower end of the inner surface of the side portion and including a circular hole at the center, The elastic portion may be deformed downward according to the size or weight of the subject in contact with the subject.

The seat unit is formed of a silicone material that blocks light and is elastic and is integrally formed with the side portion and extends from an outer circumferential surface of the side portion corresponding to the engagement position of the elastic portion and the side portion to form a circular rim And a seat bottom portion integrally formed with the side surface portion and extending downward from a lower end of the side surface portion.

The side portion may include two side holes, and the side holes may be coupled with an electrode pad that measures the fading of the subject.

The non-destructive quality measuring apparatus using near-infrared spectroscopy according to the present invention further includes a support unit for supporting the seating unit, wherein the supporting unit includes a ring-shaped receiving unit coupled to the seating unit and including a plurality of holes, And a plurality of posts supporting the support portion.

The apparatus for measuring non-destructive quality using near-infrared spectroscopy according to the present invention comprises a housing part for accommodating the light source part and the detector part, and an outer part for contacting the lower part of the seat unit and for illuminating the inside of the housing part, And a blocking unit for blocking light.

Wherein the blocking portion is integrally formed with the disc portion and has an upper portion coupled to a lower portion of the seating unit and having a hollow, and a lower portion coupled to the inner circumferential surface of the disc portion and a lower portion contacting the housing portion And a cylindrical portion of a cylindrical shape whose upper and lower portions are opened.

The non-destructive quality measuring apparatus using the near-infrared spectroscopy according to the present invention may further include a load cell located below the light source unit and the detector unit and measuring the weight of the inspected object.

The non-destructive quality measuring apparatus using near-infrared spectroscopy according to the present invention includes a control unit for controlling the light source unit and the detector unit, receiving a signal transmitted from the detector unit, analyzing and analyzing the signal, and a touch- And a display unit for receiving data from the control unit and visualizing the data.

An apparatus for measuring non-destructive quality using near-infrared spectroscopy according to the present invention includes a body part, and a light receiving part for receiving the light source part, the detector part, the seating unit, and the inspected object, Wherein the cover unit includes a first cover unit having one side hinged to the body unit, and a second cover unit coupled to the first cover unit to shield the light source unit, the detector unit, the seating unit, And a second cover part hinged to the other part to be opened and closed in a direction different from the first cover part, wherein the first cover part is bent in a U- And a handle that hinges and opens and closes the first cover part on the other side bent. The second cover part may be formed in a rectangular parallelepiped shape having two open sides.

In the present invention, near infrared rays are irradiated from a light source unit, light reflected from a subject placed on a seat unit is received by a detector unit, and the sugar content, acidity and moisture of the subject are measured, You can find out.

The seat unit can be deformed according to the weight and size of the subject.

The side portion, the elastic portion, the housing, the blocking portion, and the cover portion cut off external light, and the characteristics of the subject can be accurately measured through the irradiation of the light source portion.

(Freshness) of the subject can be measured by measuring the permittivity flowing through the subject by flowing a current through the subject through the electrode pad.

1 is a schematic perspective view of a cover of a non-destructive quality measuring apparatus using near-infrared spectroscopy according to the present invention.
2 is a perspective view of a light source part, a seating unit, a blocking part, and a supporting part of an embodiment of a non-destructive quality measuring device using near-infrared spectroscopy according to the present invention.
FIG. 3 is an exploded perspective view of FIG. 2. FIG.
4 is a cross-sectional view of a light source unit, a detector unit, a seating unit, a blocking unit, a supporting unit, and a load cell according to an embodiment of the apparatus for measuring non-destructive quality using near infrared spectroscopy according to the present invention.
FIG. 5 is a use state diagram of a seating unit of an embodiment of a non-destructive quality measuring apparatus using near-infrared spectroscopy according to the present invention.
6 is a perspective view of an electrode pad of an embodiment of a non-destructive quality measuring apparatus using near-infrared spectroscopy according to the present invention.
7 is a schematic perspective view showing a closed portion of a non-destructive quality measuring apparatus using a near-infrared spectroscopic method according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The invention, which is set forth below, may be embodied with various changes and may have various embodiments, and specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Also, the terms first, second, etc. may be used to distinguish between various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

Hereinafter, a non-destructive quality measuring apparatus 1200 using near-infrared spectroscopy according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic perspective view of an apparatus for measuring non-destructive quality 1200 using near-infrared spectroscopy according to an embodiment of the present invention, and FIG. 2 is a perspective view of a non-destructive quality measuring apparatus using near-infrared spectroscopy 2 is a perspective view of the light source unit 100, the seating unit 300, the blocking unit 650 and the supporting unit 500 of the embodiment. FIG. 3 is an exploded perspective view of FIG. Apparatus 1200 for measuring non-destructive quality using spectroscopy A sectional view of a light source unit 100, a detector unit 200, a seating unit 300, a blocking unit 650, a supporting unit 500, and a load cell 700 in one embodiment And FIG. 5 is a view illustrating a state of use of the non-destructive quality measuring apparatus 1200 using the near-infrared spectroscopic method according to the present invention, FIG. 6 is a view showing an apparatus 1000 for measuring a non-destructive quality using the near- 7 is a perspective view of an electrode pad 400 of one embodiment, Invention a schematic perspective view of a near-infrared spectroscopy, non-destructive quality measuring unit 1200, in one embodiment the cover portion 1100 using a closed according to.

An apparatus 1000 for measuring non-destructive quality using near infrared spectroscopy according to an exemplary embodiment of the present invention includes a light source unit 100, a detector unit 200, a mount unit 300, an electrode pad 400, a support unit 500, 650, a load cell 700, a control unit 800, a display unit 900, a body unit 1000, a cover unit 1100, and the like.

An apparatus for measuring non-destructive quality using near-infrared spectroscopy 1200 includes a light source unit 100 for irradiating a near infrared ray to a subject 10, a detector 130 for receiving near-infrared rays irradiated from the light source unit 100, And a seat unit 300 on which the subject 10 is placed and whose lower shape changes depending on the weight of the subject 10. The light source unit 100 may be positioned below the mount unit 300 and may be symmetrically positioned on both sides of the detector unit 200. The mount unit 300 may include a side portion 310 having a cylindrical shape with a larger diameter, And an elastic part 320 integrally formed with the side part 310 and extending in a hemispherical shape upward from the lower end of the inner peripheral surface of the side part 310 and including a circular hole 321, 320 may be in contact with the subject 10 and deformed downward depending on the size or weight of the subject 10. The seat unit 300 is formed of a silicone material that blocks light and is formed of an elastic material and is integrally formed with the side portion 310 and has a side portion 310 corresponding to the engagement position of the elastic portion 320 and the side portion 310 310 and a cylindrical seating bottom portion 340 integrally formed with the side surface portion 310 and extending downward from the lower end of the side surface portion 310, . The side surface portion 310 includes two side surface holes 311 and an electrode pad 400 for measuring the fringing of the test object 10 may be coupled to the side surface hole 311.

The light source unit 100 serves to irradiate the subject 10 with near-infrared rays. As shown in the example of FIG. 4, the light source unit 100 is disposed on the lower side of the inspected object 10, As shown in FIG. The detector unit 200 serves to receive the light reflected from the subject 10 by the near-infrared rays emitted from the light source unit 100. As shown in the example of FIG. 4, And is located at the center between the two light sources 100, so that the light emitted from the light source 100 can more efficiently receive the light reflected from the subject 10.

The seat unit 300 is a place where the subject 10 to which the light of the light source unit 100 is irradiated is seated. As shown in the example of FIG. 5, And may include a side portion 310, an elastic portion 320, a rim portion 330, and a seat bottom portion 340. In addition, 2 to 4, the side surface portion 310 may have a cylindrical shape having a larger diameter toward the upper side, may be in contact with the side surface of the subject 10 to seat the subject 10 And may include side holes 311. The elastic part 320 is integrally formed with the side part 310 and extends in a hemispherical shape upward from the inner circumferential surface at the lower end of the side part 310 to make contact with the lower part of the subject 10 to seat the subject 10 can do. 5, the elastic part 320 includes a circular hole 321 in the center thereof and is in contact with the subject 10 to form a hemispherical shape according to the size or weight of the subject 10 The convex portion is deformed downward to accommodate the subject 10 in the seat unit 300 irrespective of the size and weight of the subject 10. For example, the seating unit 300 prevents light from being transmitted from the outside to the light source unit 100 or the detector unit 200 by blocking the transmission of light, and is resilient and independent of the size and weight of the subject 10 The body 10 may be made of a silicone material.

3 to 5, the rim portion 330 is integrally formed with the side portion 310 and includes a side portion 310 corresponding to the engagement position of the elastic portion 320 and the side portion 310, And extends outwardly from the outer circumferential surface of the side part 310 to form a disc shape, and can be coupled with the support unit 500 described later. The seat bottom part 340 is integrally formed with the side surface part 310 and is formed in a cylindrical shape extending downward from the lower end of the side surface part 310. The seat bottom part 340 is inserted into the support unit 500, And the unit 500 can be coupled. 2 or 4, the rim portion 330 is seated on the upper portion of the receiving portion 510, which will be described later, and the lower receiving portion 340 is inserted into the receiving portion 510, 300 and the support unit 500 in a structurally stable manner.

6, the electrode pad 400 is located in two side holes 311 located in the side surface portion 310, and a current is supplied to the test object 10 to cause the test object 10 ) Can be measured. For example, the electrode pad 400 can measure the amount of electric current (permittivity) flowing through the apple by flowing a current of 15 V to the apple to determine the degree of fuss contained in the apple.

For example, Table 1 below shows the comparison of the permittivities of fresh apples and stored apples. The apples were placed on a mounting unit (300), and the appliances were measured for voltage for about 2 seconds at 15 V, And the difference in the permittivity of fresh apples.

Apologies for 2015 Fresh apples in 2015 2016 fresh apples range 0.01 to 0.16 V 0.5 to 1.70 V 1.16 to 3.70 V Average 0.06 V 1.0 V 2.27 V

The non-destructive quality measuring apparatus 1200 using near-infrared spectroscopy further includes a support unit 500 for supporting the mount unit 300. The support unit 500 is coupled to the mount unit 300 and includes a plurality of holes 511 And a plurality of pillars 520 for supporting the receiving part 510. The housing part 510 may include a light source part 100 and a housing part 500 for receiving the detector part 200. [ (600), and a blocking portion (650) for blocking external light that is coupled to the lower portion of the seating unit (300) and the lower portion contacts the housing portion (600) to illuminate the inside of the housing portion (600) The blocking portion 650 is formed integrally with the disc portion 651 and a disc portion 651 of a disc shape having an upper portion coupled to the lower portion of the seating unit 300 and having a hollow 655, Shaped cylindrical portion 652 which is coupled to the inner circumferential surface of the housing 651 and whose lower portion is in contact with the housing portion 600 and whose upper and lower portions are open, And a load cell 700 positioned below the detector unit 200 and measuring the weight of the inspected object 10.

The supporting unit 500 is positioned below the seating unit 300 and supports the seating unit 300 and may include a receiving unit 510 and a column 520. [ 3 and 4, the receiving portion 510 is formed in a ring shape including a plurality of holes 511, and the lower seating portion 340 of the seating unit 300 is formed in a ring shape And the lower portion of the rim 330 can be seated on the upper portion of the ring-shaped receiving portion 510. [0053] As shown in FIG. The pillars 520 are formed in a plurality of pillars, and can support the pillars 510. For example, the post 520 can be coupled with the receiving portion 510 by screwing through the hole 511 of the receiving portion 510.

The housing part 600 accommodates the light source part 100 and the detector part 200 and can block the light so that external light can not shine the light source part 100 or the detector part 200. For example, as can be seen in the example of FIG. 2 or FIG. 4, the housing portion 600 may be located inside the plurality of posts 520 of the support unit 500.

3 and 4, the upper portion of the blocking portion 650 is engaged with the lower portion of the seating unit 300, and the lower portion of the blocking portion 650 is in contact with the housing portion 600 so that external light is incident on the housing portion 600, And may include a disc portion 651 and a cylindrical portion 652. The disc portion 651 may have a circular shape. The disc portion 651 may be coupled with the lower portion of the seating unit 300 in the form of a disc having a hollow 655 at the center thereof. The cylindrical portion 652 is integrally formed with the disc portion 651 and has an upper portion coupled to the inner circumferential surface of the disc portion 651 and a lower portion brought into contact with the housing portion 600, As shown in FIG. The cylindrical portion 652 includes a hollow communicating with the inner hollow 655 of the disk portion 651 and housing the housing portion 600 and has a shape conforming to the external shape of the housing portion 600, It is possible to prevent the light from being irradiated into the housing part 600.

4, the load cell 700 is positioned below the light source unit 100 and the detector unit 200 and can measure the weight of the test object 10. [ For example, the load cell 700 is positioned below the seating unit 300, the supporting unit 500, the light source unit 100, and the detector unit 200 and includes a seating unit 300, a supporting unit 500, a light source unit 100 After measuring the weight of the detector unit 200 and the weight of the detector unit 200, the weight of the seat unit 300, the support unit 500, the light source unit 100, the detector unit 200, (10) can be measured.

The non-destructive quality measuring apparatus 1200 using the near-infrared spectroscopy method includes a control unit 800 for controlling the light source unit 100 and the detector unit 200, receiving signals transmitted from the detector unit 200, And a display unit 900 for receiving data from the control unit 800 and visualizing the received data. The body unit 1000, the light source unit 100, the detector unit 200 The cover unit 1100 further includes a mount unit 300 and a cover unit 1100 that receives the light to be irradiated from the light source unit 100 and shields external light by receiving the inspected object 10, A first cover part 1110 whose one side is hinged to the body part 1000 and a second cover part 1110 which is coupled with the first cover part 1110 to form a light source part 100, a detector part 200, a seating unit 300, And a second cover which is hinged to the body part (1000) so as to cover the specimen (10) and open and close in a direction different from the first cover part (1110) The first cover part 1110 includes a first cover part 1110 bent in a U-shaped bent form and hinged to the body part 1000, and a first cover part 1110 And a second cover portion 1120 may be formed in a rectangular parallelepiped shape having two open sides.

The control unit 800 controls the light source unit 100 to turn the light source on and off. The control unit 800 can control the detector unit 200 and receive signals transmitted from the detector unit 200 to analyze and quantify the signals.

1, the display unit 900 includes a touch screen that can be operated by a touch, and can receive data from the control unit 800 and visualize the received data. For example, the display unit 900 may visualize the sugar content, acidity, moisture content, and the like of the subject 10 using numerical values or graphs using the data received from the control unit 800.

1 or 7, the body part 1000 is a body of the non-destructive quality measuring apparatus 1200 using the near-infrared spectroscopy and includes a control unit 800, a display unit 900, a support unit 500, a cover portion 1100 described later, and the like may be combined. The cover unit 1100 accommodates the light source unit 100, the detector unit 200, the seating unit 300, the support unit 500, and the test object 10, And may include a first cover part 1110 and a second cover part 1120. The first cover part 1110 and the second cover part 1120 may be formed of a transparent material. For example, the inner surface of the cover part 1100 may be black to prevent reflection of light emitted from the light source part 100 and effectively absorb light. 1 and 7, the first cover part 1110 is folded in the form of a U-shaped bent plate, and one side of the first cover part 1110 is coupled to the body part 1000 by a hinge, And may include a handle 1130. The handle 1130 may include a handle 1130, The handle 1130 is positioned on the bent side of the first cover part 1110 and may serve to open and close the first cover part 1110. The second cover part 1120 has a rectangular parallelepiped shape having two open sides and the other side of the first cover part 1110 which is different from the hinge direction of the first cover part 1110 is opened and closed in a direction different from the first cover part 1110, And may be hinged to be coupled with the first cover part 1110 to shield external light. For example, the second cover portion 1120 may also include a handle.

The non-destructive quality measuring apparatus 1200 using the near-infrared spectroscopy method irradiates near infrared rays from the light source unit 100 and receives light diffused and reflected by the test object 10 placed on the mount unit 300 from the detector unit 200, The characteristics of the subject 10 can be determined without destroying the subject 10 by measuring the sugar content, acidity, moisture and the like of the subject 10. For example, the subject 10 may include fruit or other agricultural products. The elastic unit 320, the housing unit 600, the blocking unit 650, and the cover unit 1100 can be deformed in accordance with the weight and size of the test body 10, So that the characteristics of the subject 10 can be accurately measured. It is possible to measure the fading (freshness) of the subject 10 by measuring the permittivity flowing through the subject 10 by flowing a current through the subject 10 using the electrode pad 400.

It should be noted that the embodiments disclosed in the drawings are merely examples of specific examples for the purpose of understanding, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10: subject 100: light source
200: Detector unit 300: Seat unit
310: side portion 311: side hole
320: elastic portion 321: circular hole
330: rim 340: seat bottom
400: electrode pad 500: support unit
510: receiving portion 520:
600: housing part 650:
651: disk portion 652: cylindrical portion
700: load cell 800:
900: display part 1000: body part
1100: cover part 1110: first cover part
1120: second cover part 1130: handle
1200: Non-destructive quality measuring device using near-infrared spectroscopy

Claims (11)

A light source unit for irradiating the subject with near-infrared rays;
A detector unit for receiving near infrared rays radiated from the light source unit and receiving light reflected from the inspected object; And
And a seat unit on which the subject is seated and whose lower shape is changed according to the weight of the subject, and a non-destructive quality measuring device using near-infrared spectroscopy.
The method according to claim 1,
Wherein the light source unit is positioned below the seating unit and is positioned symmetrically on both sides of the detector unit.
The method according to claim 1,
The seat unit includes:
A side portion in the form of a cylinder having a larger diameter toward the upper portion; And
And an elastic part formed integrally with the side part and extending in a hemispherical shape upward from a lower end of the inner circumferential surface of the side part and including a circular hole at the center,
Wherein the elastic portion is in contact with the body to be deformed downward according to the size or weight of the body.
The method of claim 3,
The seat unit includes:
It is made of silicone material that blocks light and is elastic,
A rim portion integrally formed with the side portion and extending from an outer circumferential surface of the side portion corresponding to a joining position of the elastic portion and the side portion to form a circular rim; And
And a bottom of the cylindrical shape formed integrally with the side portion and extending downward from a lower end of the side portion.
The method of claim 3,
The side portion includes two side holes,
And an electrode pad for measuring the fading of the test object is coupled to the side hole, the non-destructive quality measuring device using near-infrared spectroscopy.
The method according to claim 1,
And a support unit for supporting the seat unit,
The support unit includes:
A ring-shaped receiving unit coupled to the seating unit and including a plurality of holes; And
And a plurality of pillars supporting the support unit. The apparatus for measuring non-destructive quality using near-infrared spectroscopy.
The method according to claim 1,
A housing part accommodating the light source part and the detector part; And
And a blocking unit for blocking external light that is coupled to the bottom of the seating unit and whose bottom is in contact with the housing unit to illuminate the interior of the housing unit.
The method of claim 7,
The cut-
A disk-shaped disk portion having an upper portion coupled to a lower portion of the seating unit and having a hollow; And
And a cylindrical portion integrally formed with the disk portion and having an upper portion coupled to an inner circumferential surface of the disk portion, a lower portion contacting the housing portion, and upper and lower portions being opened, the apparatus being characterized by using a near-infrared spectroscopic method.
The method according to claim 1,
And a load cell positioned below the light source unit and the detector unit and measuring the weight of the inspected object.
The method according to claim 1,
A control unit for controlling the light source unit and the detector unit, receiving a signal transmitted from the detector unit, and analyzing and analyzing the signal; And
And a display unit including a touch screen that can be operated by a touch and receives data from the control unit and visualizes the data by using a near infrared spectroscopy method.
The method according to claim 1,
A body portion; And
And a cover unit for receiving the light source unit, the detector unit, the seating unit, and the body to block external light and absorb the light emitted from the light source unit,
The cover portion
A first cover part hinged to one side of the body part; And
A second cover which is coupled with the first cover part to shield the light source part, the detector part, the seating unit, and the inspected object, the other side of which is hinged to the body part to be opened and closed in a direction different from the first cover part, Comprising:
The first cover part includes a handle that is bent in a U-shaped plate shape and one side of which is hinged to the body part and opens and closes the first cover part on the bent side,
Wherein the second cover is formed in a rectangular parallelepiped shape having two open sides.

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