Parasite inspection device and parasite inspection method

Abstract

To enable inspection of parasites without damaging the freshness of an inspection object.SOLUTION: The parasite inspection device 1 is an inspection device for inspecting a parasite that parasitizes an inspection object 100, and includes a mounting section 17 on which the inspection object 100 is placed, and a light source 2 that emits light of 250 nm to 400 nm. The light source 2 is an LED light-emitting device installed above the mounting section 17, and the 1 / 2 luminous intensity distribution angle of at least one cross section of the light emitted from the light source 2 is 55° or larger, and 90% or more of the emitted light is emitted below a horizontal plane including the light source.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a parasite inspection device and a parasite inspection method. [Background technology]

[0002] Conventionally, inspection devices using a light source that emits ultraviolet light have been proposed for inspecting parasites present in the bodies of fish. For example, Patent Document 1 discloses an inspection device that uses a discharge lamp equipped with a ballast and a discharge tube. In recent years, damage such as food poisoning caused by Anisakis, a type of parasite that infects fish, has become apparent, and there is a demand for the detection and removal of Anisakis before fish are processed for consumption. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] WO2017 / 018111 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in an inspection device that uses a discharge lamp equipped with a ballast and a discharge tube, the lighting device becomes complicated, and the radiating surface becomes hot, reducing the freshness of the object being inspected (fish). Furthermore, frequent turning off and on of the lamp during inspection shortens the life of the light source, resulting in frequent replacement of the light source. It is desirable to have a simpler configuration for a parasite inspection device that uses ultraviolet light, preventing the deterioration of the freshness of the object being inspected, and enabling a longer life of the light source even when the lamp is frequently turned on and off. [Means for solving the problem]

[0005] The parasite inspection device (1) according to the present disclosure is for inspecting a parasite that is infesting an inspection object (100), and comprises a mounting portion (17) on which the inspection object (100) is placed, and a light source (2) that emits light of 250 nm to 400 nm, the light source (2) being an LED light-emitting device installed above the mounting portion (17), characterized in that the 1 / 2 luminous intensity distribution angle of at least one cross section of the light emitted from the light source (2) is 55° or more, and 90% or more of the light emitted from the light source (2) is emitted below a horizontal plane including the light source.

[0006] The parasite inspection method according to the present disclosure is for inspecting a parasite that is infesting an inspection object (100), and includes an emission step of emitting light of 250 to 400 nm from a light source (2) onto the inspection object (100), wherein the light source (2) is an LED light-emitting device, and the emission step is characterized in that the 1 / 2 luminous intensity distribution angle of at least one cross section of the emitted light from the light source (2) is set to 55° or more, and 90% or more of the emitted light from the light source (2) is emitted downward below a horizontal plane including the light source. [Effects of the Invention]

[0007] The parasite inspection device and parasite inspection method according to the present disclosure enable parasite inspection without compromising the freshness of the object being inspected, and also simplify the device structure and extend the life of the light source. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a diagram schematically illustrating a parasite inspection device according to an embodiment; [Figure 2] 1 is a block diagram showing a schematic configuration of a parasite inspection device that is an example of an embodiment. [Figure 3] 1 is a flowchart corresponding to a parasite inspection method according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, with reference to the drawings, an example of an embodiment of a parasite inspection device and a parasite inspection method according to the present disclosure will be described in detail. Note that the scope of the present disclosure includes configurations that selectively combine the components of the multiple embodiments and variations described below. In the description of the embodiment, for convenience of explanation, the direction in which the camera is positioned relative to the object to be inspected is referred to as "up."

[0010] The main body of the device of the present disclosure includes a computer. The computer executes a program to realize the functions of the main body of the device of the present disclosure. The computer includes, as its main hardware configuration, a processor that operates according to the program. The type of processor is not important as long as it can realize the above functions by executing the program. The processor is composed of one or more electronic circuits, including an integrated circuit (IC) or a large-scale integrated circuit (LSI). The multiple electronic circuits may be integrated into a single chip or may be provided on multiple chips. The multiple chips may be integrated into a single device or may be provided on multiple devices. The program is stored in a non-transitory storage medium, such as a computer-readable ROM, optical disk, or hard disk drive. The program may be pre-stored in the storage medium or may be supplied to the storage medium via a wide area communication network, including the Internet.

[0011] Fig. 1 is a diagram schematically showing a parasite-detecting device 1 according to an embodiment of the present invention, and Fig. 2 is a block diagram showing a schematic configuration of the parasite-detecting device 1.

[0012] As shown in FIGS. 1 and 2, the parasite-inspection device 1 includes an inspection box 10 and a control unit 30. The inspection box 10 includes a box housing 11, a mounting unit 17 on which an inspection target 100 is placed, and a light source 2. The mounting unit 17 and the light source 2 are installed inside the box housing 11. Furthermore, a camera 20 for photographing the inspection target 100 placed on the mounting unit 17, and an auxiliary light source 3 are installed inside the box housing 11. By using the light emitted from the light source 2 or the auxiliary light source 3, it becomes possible to easily find parasites such as Anisakis present on the surface or inside the inspection target 100.

[0013] 1 and 2, a fish is illustrated as the inspection object 100, but the inspection object 100 is not limited to fish. The inspection object 100 may be, for example, seafood such as firefly squid, Japanese flying squid, or Alaska pollock, or meat such as pork. In this embodiment, the inspection object 100 will be described taking a fish as an example.

[0014] The parasite inspection device 1 further includes a monitor 40, an operation terminal 41, and a switch 42. The monitor 40, the operation terminal 41, and the switch 42 are provided outside the inspection box 10. The monitor 40 is a display device that can output an image of the inspection object 100 photographed by the camera 20. The operation terminal 41 is connected to the control unit 30 by wire or wirelessly, and is an input device for inputting information necessary for controlling the control unit 30. The switch 42 is a main power supply operation unit for starting up the parasite inspection device 1. The switch 42 is provided on the side surface 13 of the box housing 11, and is electrically connected to the control unit 30.

[0015] The control unit 30 is composed of a computer equipped with a processor 31, memory 32, and an input / output interface. The control unit 30 includes a first processing unit 33 that controls the light source 2 and the auxiliary light source 3, and a second processing unit 34 that controls the camera 20. Based on the operation of an operation terminal 41, the control unit 30 controls the camera 20, the light source 2, and the auxiliary light source 3, and outputs images captured by the camera 20 to a monitor 40. The processor 31 realizes the functions of the above processing units by reading and executing a control program. The memory 32 includes non-volatile memory such as a ROM, HDD, or SSD that stores the control program, various setting information, etc., and volatile memory such as a RAM.

[0016] The monitor 40 and the operation terminal 41 may be a terminal device integrated with the control unit 30. In this case, examples of the terminal device include a smartphone, a tablet, a laptop computer, etc. Alternatively, at least some of the functions of the control unit 30 may reside in a server connected via a wide area communication network such as the Internet.

[0017] As described above, the inspection box 10 includes the light source 2, the auxiliary light source 3, the mounting portion 17, and the camera 20, which are provided inside the box housing 11. The box housing 11 is a box having a substantially rectangular parallelepiped shape including a top surface 12, side surfaces 13, and a bottom surface 14. The box housing 11 has three side surfaces 13, and an opening 15 is formed in a portion of the side surface. This opening 15 allows access to the inside of the box housing 11, and the inspection target 100 can be placed on the mounting portion 17. The box housing 11 is also provided with a lid 16 that can open and close the opening 15. The box housing 11 and the lid 16 are made of a material that does not transmit the light emitted from the light source 2. In other words, when the lid 16 is closed, the light emitted from the light source 2 is blocked by the box housing 11.

[0018] The light source 2 is installed above the mounting section 17 on which the inspection object 100 is placed, and emits light having a wavelength range of 250 nm to 400 nm from above toward the inspection object 100. The camera 20, like the light source 2, is installed above the mounting section 17, and photographs the inspection object 100 receiving the light emitted by the light source 2. The camera 20 outputs the photographed image of the inspection object 100 to a monitor 40 via a control section 30. In this embodiment, inside the box housing 11, the auxiliary light source 3 and the mounting section 17 are arranged on the bottom surface 14, and the camera 20 is attached to the top surface 12. As will be described in detail later, the light source 2 is an elongated LED light-emitting device, and both ends of the light source 2 in the longitudinal direction are attached to two opposing side surfaces 13.

[0019] The light emitted from the light source 2, which includes a wavelength range of 250 nm to 400 nm, improves the visibility of parasites that are present on the surface or inside the inspection object 100, making it easier to find them. However, there is a concern that light with a short wavelength of 250 nm to 400 nm may cause damage to the human eye if exposed to it. For this reason, the parasite inspection device 1 is equipped with a box housing 11 and a camera 20.

[0020] The mounting section 17 is a mounting table installed so as to form a gap with respect to the bottom surface 14 of the box housing 11, and the auxiliary light source 3 is installed in this gap so as to radiate light upward. That is, the auxiliary light source 3 radiates light from below the inspection object 100. Like the light source 2, the auxiliary light source 3 radiates light including a wavelength range of 250 nm to 400 nm. The mounting section 17 is made of a material that transmits radiated light in the 250 nm to 400 nm range. Alternatively, the mounting section 17 may be formed in a mesh shape, and may have holes for passing the radiated light.

[0021] The inspection object 100 can receive short wavelength light of 250 nm to 400 nm from above and below by the light source 2 and the auxiliary light source 3. By using the auxiliary light source 3 in combination with the light source 2, parasites infesting the inspection object 100 can be found more effectively than when only the light source 2 is used.

[0022] A lid 16 is installed on the front of the inspection box 10 so that the opening 15 can be opened and closed. As described above, the lid 16 is made of a light-blocking material. Therefore, when the lid 16 is closed, it is possible to prevent direct exposure of the human eyes to the light emitted from the light source 2 and the auxiliary light source 3. The lid 16 may be made of a material that blocks short-wavelength light having a wavelength of 400 nm or less and transmits light having a wavelength of more than 400 nm. In this case, even if short-wavelength light is emitted from the light source 2 with the lid 16 closed, it is possible to prevent exposure to short-wavelength light that is harmful to the human eyes while ensuring visibility of the inside of the inspection box 10, including the inspection target 100.

[0023] The lid 16 may also function as a safety device. For example, when the lid 16 is open, even if an instruction to turn on the light source 2 is issued from the operation terminal 41 to the light source 2 or the auxiliary light source 3, the emission of short-wavelength light of such high intensity that it may have a harmful effect on the human eye is prohibited. In other words, only when the lid 16 is closed can the light source 2 and the auxiliary light source 3 emit short-wavelength light of such high intensity. For example, a sensor (not shown) that detects whether the lid 16 is open or closed is installed in the inspection box 10, and the detection information is sent to the control unit 30.

[0024] It is also possible to implement control such that when at least one of the light source 2 and the auxiliary light source 3 is emitting strong radiation output, the strong radiation output is switched to weak radiation output or the light is turned off when the lid 16 is opened. Alternatively, it is also possible to implement control such that a locking device for locking the lid 16 is provided in the inspection box 10, and when at least one of the light source 2 and the auxiliary light source 3 is emitting strong radiation output, an attempt to open the lid 16 is made to mechanically lock it, thereby restricting the opening operation.

[0025] The characteristics of light source 2 will be described in detail below. Light source 2 is an LED light-emitting device capable of outputting light with a short wavelength component spanning the blue-violet region of visible light and the ultraviolet region of invisible light. The light emitted from light source 2 includes a wavelength component of 250 nm to 400 nm. By irradiating the inspection target 100 with radiant light of this wavelength component, parasites such as Anisakis become more visible. However, there is a concern that the short wavelength component of 250 nm to 400 nm may cause damage to the eyes. Parasite inspection device 1 solves the problem of using radiant light with a high power that includes a short wavelength component to more effectively visualize parasites, while at the same time eliminating the risk of hazard to human eyes.

[0026] The light source 2 is preferably a device capable of controlling the radiation intensity stepwise or continuously. For example, when the maximum irradiance at the mounting portion 17 is 3 mW / cm 2 More than 20mW / cm 2 and a weak output of less than 20 mW / cm 2 The above strong output can be selectively controlled. As will be described in detail later, when the maximum irradiance is high, the lid 16 of the inspection box 10 is closed to prevent exposure to the human eye, while images are acquired by the camera 20. Then, when the maximum irradiance is low, the lid 16 is opened, and the object 100 to be inspected is inspected directly with the naked eye, while comparing the acquired images to check for the presence or absence of parasites. This makes it possible to easily find parasites.

[0027] The lower limit of the weak output in the mounting portion 17 is 5 mW / cm 2 It is preferable that the lower limit is 10 mW / cm because it is easier to check for the presence or absence of parasites. 2 It is more preferable that the upper limit of the weak output in the mounting portion 17 is 16 mW / cm. 2 The upper limit is preferably 12 mW / cm because this reduces the risk of exposure to the human eye. 2 is more preferable because it further reduces the risk of exposure to human eyes and enables safe handling.

[0028] The strong output at the mounting portion 17 is 30 mW / cm 2 This is preferable because it allows the camera 20 to capture images in which the parasites are more easily visible. 2 A power of 100 mW / cm or more is more preferable because it makes it possible to visually identify parasites even in thicker test objects. 2 is.

[0029] The light source 2 is an LED light-emitting device, which can effectively suppress thermal damage to the inspection object 100 compared to conventional discharge lamps. If the inspection object 100 is raw fish, heat load will reduce its freshness, which is undesirable. For this reason, when inspecting for parasites, it is necessary to inspect it using a method that minimizes heat exposure. The parasite inspection device 1 uses an LED light-emitting device that emits little heat, which is far more preferable in terms of preserving freshness than devices that use conventional discharge lamps.

[0030] Furthermore, when the parasite inspection device 1 is used for fresh fish, it is assumed that the inspection process is often carried out in a warehouse where temperatures are low. In this case, the lower the temperature, the harder it is for a discharge lamp to light up and the lower its luminous efficiency. However, the lower the temperature, the higher the luminous efficiency of an LED light-emitting device. In other words, in terms of luminous efficiency in a low-temperature environment, an LED light-emitting device is preferable to a system using a conventional discharge lamp.

[0031] Furthermore, it is expected that light source 2 will be turned on and off frequently. In this case, if a discharge lamp were used, the filament would scatter when it was turned on, which would, in principle, result in a very short lifespan (compared to normal continuous lighting). However, if an LED light-emitting device is used as light source 2, it is theoretically impossible for turning the light on and off to accelerate deterioration of its lifespan. In other words, from this perspective as well, it can be said that using an LED light-emitting device has a significant advantage over systems that use conventional discharge lamps.

[0032] Additionally, systems using LED light-emitting devices are superior to conventional discharge lamps in terms of adjusting output intensity. Discharge lamps need to maintain an AC plasma discharge state to maintain stable output, and a complex control power supply is required to vary the light output. On the other hand, with LED light-emitting devices, stable increase / decrease control of light output is relatively easy by controlling the current value of the DC power supply.

[0033] In other words, it can be seen that LED light-emitting devices have a much greater advantage than is generally recognized compared to conventional discharge lamps when it comes to the purpose of more effectively detecting parasites in fresh fish.

[0034] For example, an elongated LED light emitting device is used as the light source 2. When the inspection object 100 is a fish, since fish are generally elongated, using an elongated light source makes it possible to more effectively irradiate light onto the entire inspection object 100. In other words, it is possible to improve the visibility of parasites while using power as efficiently as possible.

[0035] The half luminous intensity distribution angle in at least one cross section of the light source 2 is 55° or more. For example, in an elongated light source 2, the half luminous intensity distribution angle in a cross section perpendicular to the axial direction is 60°. This allows the inspection object 100 to be irradiated more uniformly, improving the visibility of parasites over the entire inspection object 100.

[0036] More than 90% of the light emitted from the light source 2 is emitted downward from a horizontal plane including the light source 2. This makes it possible to improve the visibility of the inspection target 100 while using power efficiently. In LED light-emitting devices for general use such as home use, it is often desirable to ensure a certain amount of radiation on the opposite side to the direction where the radiation intensity is maximum in order to widely illuminate the back of the light source. However, in this embodiment, since there is no object to be irradiated other than the inspection target 100, it is desirable to radiate as much as possible downward.

[0037] An example of a parasite inspection method will be described below with reference to the flowchart of FIG.

[0038] An example of a parasite inspection method is a method for inspecting an inspection object 100 for parasites infesting the inspection object 100, and includes an emission step of emitting light of 250 to 400 nm from a light source 2 onto the inspection object 100. As described above, the light source 2 is an LED light-emitting device, and in the emission step, the half luminous intensity distribution angle of at least one cross section of the light emitted from the light source 2 is set to 55° or more, and 90% or more of the emitted light is emitted downward from a horizontal plane including the light source 2. An example of a specific inspection method is as follows.

[0039] 3, an example of a parasite inspection method includes the steps of emitting and stopping the emission of high-power UV light and low-power UV light, and outputting an image of the inspection object 100 to the monitor 40. The example of a parasite inspection method also includes the step of removing parasites found from the inspection object 100. Here, the high-power UV light refers to UV light that includes a short wavelength component of 250 nm to 400 nm and has a maximum irradiance of, for example, 20 mW / cm on the mounting portion 17. 2 The low-power UV light is radiation that includes a short wavelength component of 250 nm to 400 nm and has a maximum irradiance of, for example, 3 mW / cm on the mounting portion 17. 2 More than 20W / cm 2 It is radiation light that is less than

[0040] In step 1, the inspection object 100 is set in the inspection box 10. A mounting portion 17 and an auxiliary light source 3 are installed in advance on the bottom surface 14 of the inspection box 10. By placing the inspection object 100 on the mounting portion 17, the inspection object 100 can be irradiated from below with short wavelength components of 250 nm to 400 nm from the auxiliary light source 3. After the inspection object 100 is set in the inspection box 10, the lid 16 is closed.

[0041] As described above, both the light source 2 and the auxiliary light source 3 are capable of selectively outputting at least two types of radiation light, namely, light with a weak radiation output and light with a strong radiation output, which contain wavelength components of 250 nm to 400 nm. Here, the light with a weak radiation output is the low-power UV light described above, and the light with a strong radiation output is the high-power UV light described above.

[0042] The lower limit of the low-power UV light, i.e., the weak output at the placement section 17, is 5 mW / cm as described above. 2 The lower limit of low-power UV light is 5 mW / cm or more. 2 It is preferable that the lower limit is 10 mW / cm because it is easier to check for the presence or absence of parasites. 2 It is more preferable that the upper limit of low-power UV light is 16 mW / cm because it allows for easier and more efficient inspection. 2 The upper limit is preferably 12 mW / cm because this reduces the risk of exposure to the human eye. 2 is more preferable because it further reduces the risk of exposure to human eyes and allows safe handling. A suitable example of the maximum irradiance of low-power UV light is 3 mW / cm 2 More than 20W / cm 2 Less than or equal to 5mW / cm 2 ~16W / cm 2 , or 5mW / cm 2 ~12W / cm 2 , or 10 mW / cm 2 ~16W / cm 2 , or 10 mW / cm 2 ~12W / cm 2 is.

[0043] The high-power UV light, i.e., the strong output at the mounting portion 17, is 30 mW / cm as described above. 2 The lower limit of high-power UV light is 30 mW / cm or more. 2 This is preferable because it allows the camera 20 to capture images in which the parasites are more easily visible. Furthermore, the lower limit of the high-power UV light is 40 mW / cm 2A power of 100 mW / cm or more is more preferable because it makes it possible to visually identify parasites even in thicker objects to be inspected. 2 is.

[0044] If the inspection object 100 is a thin-fleshed fish, the necessary inspection can be performed using only the light source 2, but if the fish is thick, it may be difficult to sufficiently visualize the parasites using only the light source 2. In this case, by using the auxiliary light source 3 to also emit light from below the inspection object 100, the light necessary to inspect the entire inspection object 100 can be secured.

[0045] In step 2, the control unit 30 starts the test by receiving an operation signal from the switch 42. The switch 42 is a mechanical switch that is operated by the user's hand. However, the instruction to start the test to the control unit 30 may be given by a wireless signal using a remote control (not shown) or the like, instead of a mechanical switch like the switch 42.

[0046] The first processing unit 33 of the control unit 30 controls the light source 2 and the auxiliary light source 3 when it receives an operation signal from the switch 42 or when it receives an operation signal from the operation terminal 41. Furthermore, the second processing unit 34 of the control unit 30 controls the camera 20, for example, in response to an instruction from the operation terminal 41. As will be described in more detail below, the first processing unit 33 instructs the light source 2 to emit high-power UV light, and at this time, the second processing unit 34 instructs the camera 20 to capture an image of the inspection object 100.

[0047] In step 3, the first processing unit 33 controls the light source 2 to emit high-power UV light from the light source 2. At this time, if the UV light from the light source 2 alone is insufficient, such as when the inspection object 100 is a thick-fleshed fish, the first processing unit 33 also emits high-power UV light from the auxiliary light source 3.

[0048] When the inspection object 100 is exposed to the high-power UV light, parasites present on the surface and inside the inspection object 100 are easily visible. While the high-power UV light continues to be emitted, in step 4, the second processing unit 34 controls the camera 20 to capture an image of the inspection object 100. The captured image is stored in the memory 32.

[0049] After the camera 20 captures an image of the inspection object 100, in step 5, the emission of high-power UV light from the light source 2 is stopped. If high-power UV light is also being emitted from the auxiliary light source 3, the emission from the auxiliary light source 3 is also stopped.

[0050] The timing of turning on and off the light source 2 and the auxiliary light source 3, adjustment of the radiation output, and instructions to capture an image of the inspection object 100 by the camera 20 may be performed manually, but some or all of these may be performed automatically by instructions from the control unit 30. In this case, a program for executing predetermined operations is installed in the memory 32 in advance.

[0051] In step 6, the image of the inspection object 100 stored in the memory 32 is displayed on the monitor 40.

[0052] In step 7, low-power UV light is emitted from light source 2. At this time, control may be executed to automatically emit low-power UV light after detecting that lid 16 is open, or low-power UV light may be emitted when an operation is performed via operation terminal 41 after lid 16 is opened. Furthermore, low-power UV light may be emitted only from light source 2, or low-power UV light may also be emitted from auxiliary light source 3.

[0053] In step 8, the parasite removal work is performed. At this time, the operator can directly visually check the inspection object 100 irradiated with low-power UV light alongside the image of the inspection object 100 irradiated with high-power UV light displayed on the monitor 40. In other words, the operator can directly visually confirm the location of the parasites on the monitor 40 adjacent to the inspection box 10.

[0054] This makes it possible to easily determine where the parasites are present and to efficiently remove the parasites. In other words, it becomes possible to efficiently remove the parasites that are infesting the inspection object 100 while suppressing the risk of safety caused by exposure of the human eye to short wavelength light.

[0055] When the parasite removal operation is completed, switch 42 is turned OFF in step 9. This stops the emission of low-power UV light from light source 2 and the output of images to monitor 40 in step 11. When control unit 30 receives an operation signal to turn switch 42 OFF, it stops the operation of light source 2, etc. Furthermore, if auxiliary light source 3 is operating, it also stops the operation of auxiliary light source 3. The above is an example of a series of inspection methods.

[0056] Another example of the embodiment will be described below.

[0057] A parasite inspection device as another example of an embodiment may include a movable mounting unit. The parasite inspection device includes, for example, a movable mounting table inside the inspection box 10. The movable mounting table on which the inspection object 100 is placed irradiates the inspection object 100 with high-power UV light within the inspection box 10, and after the camera 20 captures an image of the inspection object 100, moves the inspection object 100 to the outside of the inspection box 10. Thereafter, the inspection object 100 irradiated with low-power UV light is directly observed with the naked eye while checking the captured image on the monitor 40.

[0058] In this case, the inspection object 100 is irradiated with high-power UV light from a light source 2 at a position before movement, and is irradiated with low-power UV light from a different light source 2 at a position after movement. The movable mounting table is, for example, a belt conveyor. The inspection box 10 has a hole in its side surface 13 so that the inspection object 100 can be moved to the outside of the box housing 11 by the movable mounting table.

[0059] The above embodiment can be appropriately modified in design without impairing the purpose of the present disclosure. For example, in the above embodiment, instructions to start the inspection (step 1) and end the inspection (step 11) are issued via switch 42, but similar instructions may be issued via operation terminal 41. Also, in the above embodiment, the captured image is stored in memory 32 inside control unit 30, but memory 32 may be present in a server located away from the external device, or may be present in an external cloud. [Explanation of symbols]

[0060] 1. Parasite testing equipment 2 light source 3 Auxiliary light source 10 Inspection Box 11 Box Enclosure 12 Top side 13 Side 14 Bottom 15 Opening 16 Lid 17 Placement section 20 Camera 30 Control Unit 31 processors 32 memory 33 First Processing Section 34 Second Processing Section 40 monitors 41 Operation terminal 42 Switch 100 Inspection object

Claims

1. A parasite inspection device for inspecting a parasite that is infesting an inspection object, comprising: a placement section on which the inspection object is placed; a light source that emits light in the range of 250 nm to 400 nm; Equipped with the light source is an LED light-emitting device installed above the placement section, a ½ luminous intensity distribution angle of at least one cross section of light emitted from the light source being 55° or more, and 90% or more of the emitted light being emitted downward from a horizontal plane including the light source; Parasite testing equipment.

2. The parasite testing device of claim 1, The inspection apparatus further includes an auxiliary light source that emits light from below the mounting portion toward the inspection object.

3. The parasite inspection device according to claim 1, The maximum irradiance on the mounting portion is 3 mW / cm ２ That's all.

4. The parasite inspection device according to claim 1, The maximum irradiance on the mounting portion is 20 mW / cm ２ That's all.

5. The parasite inspection device according to claim 4, a camera for photographing the inspection object; a monitor capable of outputting images captured by the camera; Further provided are:

6. The parasite inspection device according to claim 5, The inspection device further includes an inspection box that contains the inspection object and has an openable and closable lid.

7. The parasite testing device according to claim 6, The mounting section is a movable mounting table that is disposed inside the inspection box.

8. The parasite testing device according to any one of claims 1 to 7, The light source is an elongated LED light emitting device.

9. A parasite inspection method for inspecting a parasite that is parasitic on the inspection object, comprising: A radiation step of radiating light of 250 to 400 nm from a light source to the inspection object, the light source is an LED light emitting device, In the emitting step, a half luminous intensity distribution angle of the radiated light from the light source in at least one cross section is set to 55° or more, and 90% or more of the radiated light is radiated downward from a horizontal plane including the light source. Parasite testing methods.

10. The parasite detection method according to claim 9, While irradiating the inspection object with light of 250 to 400 nm, the inspection object is photographed to acquire an image; enabling the parasite to be treated using the image; Parasite testing methods.

11. The parasite detection method according to claim 9, The irradiating step includes: The maximum irradiance of the radiation surface of the inspection object is 20 mW / cm ２ a first irradiation step of irradiating the inspection object with first light of 250 to 400 nm so that the above-mentioned The maximum irradiance of the radiation surface is 3 mW / cm ２ Above, 20mW / cm ２ a second irradiation step of irradiating the inspection object with second light of 250 to 400 nm so that the wavelength is less than Including, In the first irradiating step, the inspection object is photographed while the first light is irradiated onto the inspection object to obtain an image; The parasites can be processed while comparing the image with the object that has received the second light in the second irradiation step. Parasite testing methods.

12. The parasite detection method according to claim 11, In the first irradiating step, the first light is irradiated onto the inspection object with a lid of an inspection box containing the inspection object closed.

Images