WO2017018111A1

WO2017018111A1 - Inspection apparatus

Info

Publication number: WO2017018111A1
Application number: PCT/JP2016/068868
Authority: WO
Inventors: 雅近藤; 友厚谷口; 誠中谷
Original assignee: 株式会社イシダ
Priority date: 2015-07-29
Filing date: 2016-06-24
Publication date: 2017-02-02
Also published as: JP6830254B2; JPWO2017018111A1

Abstract

This inspection apparatus is provided with: a light irradiation unit that irradiates an object placed in a predetermined area for inspection with excitation light; a shade that forms, within the predetermined area, an inspection area shaded against indoor light; and a filter plate that permits light emitted as a result of the irradiation of a parasite included in the object by the excitation light to pass therethrough.

Description

Inspection device

The present invention relates to an inspection apparatus for inspecting mainly whether seafood has parasites.

It is known that various parasites are lurking in seafood. For example, parasites such as Anisakis and Pseudoterranova parasitize internal organs and muscles such as salmon, salmon, cod, and hockey, and these raw foods cause food poisoning such as Anisakiasis. Therefore, sufficient heating or freezing at −20 ° C. or lower for 24 hours or longer is indispensable for preventing food poisoning. However, recently, since seafood delivered directly from the production area can be obtained easily, there is an increasing demand for raw food without heating and freezing. Along with this, in a cooking place such as a supermarket, parasites are forced to be removed at the stage of cooking fish.

[To date, the removal of parasites relies on visual inspections that are carried out by workers after visual confirmation. However, since the parasite penetrates not only into the surface of the muscle but also into the muscle, it is difficult to find out if it is a small parasite, and it is a great burden on the workers. Therefore, there is a demand for an inspection apparatus that can easily detect and remove such parasites.

As devices capable of detecting parasites, for example, devices described in

Patent Documents

1 and 2 below are known. The apparatus described in Patent Document 1 is an inspection apparatus that utilizes the fact that parasites emit blue light in the visible wavelength range when fish fillets are irradiated with ultraviolet rays. Moreover, the apparatus described in Patent Document 2 is an apparatus that detects fluorescence excited by irradiating a parasite with visible light.

JP H01-312533 JP 2007-286041 A

These inspection devices are basically used in a dark room (see, for example, “Food Hygiene Inspection Guidelines”, Microorganism bias, page 562, 2004 edition, supervised by the Ministry of Health, Labor and Welfare). However, this requires large-scale facilities, and there is a problem that it cannot be introduced into a small kitchen such as a supermarket.

Therefore, it is conceivable that the worker puts the fish into the inspection apparatus and looks into the apparatus from the outside to inspect for the presence of parasites. However, such an apparatus has a problem that workability is poor because an operator has to put it in and out of the inspection apparatus every time a fish is cooked. In addition, even if an operator finds a parasite, the parasite cannot be removed unless the fish body is taken out of the apparatus.

The present invention has been developed in view of these problems, and an object of the present invention is to provide a new inspection apparatus that can perform inspection for the presence or absence of parasites and removal of parasites as part of cooking.

An inspection apparatus according to an aspect of the present invention includes a light irradiation unit that irradiates an inspection object disposed in a predetermined area with excitation light, a shade that forms an inspection region that is shaded from room light in the predetermined area, and an inspection target And a filter plate that transmits light emitted by the parasite contained in the object when irradiated with the excitation light.

According to the present invention, the operator can inspect the presence or absence of parasites and remove the parasites on the spot while cooking the fish body. It becomes possible. Moreover, since the cook (worker) can perform cooking, inspection and removal in a flow-oriented manner, even if a new inspection process is introduced in the kitchen, the effect of not placing an excessive burden on the cook There is.

FIG. 1 is a conceptual diagram for explaining an inspection apparatus according to the first embodiment. FIG. 2 is an explanatory diagram when making a shadow from room lighting with a shade. FIG. 3 is an external perspective view of the inspection apparatus according to the second embodiment. FIG. 4 is a photograph when the anisaki of the cocoon is detected using the inspection apparatus of FIG. FIG. 5 is an external perspective view of an inspection apparatus according to another embodiment.

Hereinafter, an embodiment of an inspection apparatus according to one aspect of the present invention will be described with reference to the drawings. The following embodiments do not limit the technical scope of the present invention.
[First Embodiment]

FIG. 1 is a conceptual diagram for explaining an inspection apparatus according to the first embodiment. In this figure, the operator arranges the inspection device D above the area (predetermined area) BA of the cooking table C, and arranges the inspection object M (fish fillet) stored in the tray T on the right side. Then, the inspection object M is sent to the area BA to inspect for the presence of parasites.

As shown in FIG. 1, the inspection apparatus D includes a light irradiation unit E that irradiates an inspection object M arranged in an area BA with excitation light B, and an indoor light (an indoor illumination L that is a light source) in the area BA. A shade S that forms an inspection region R that is a shadow from light emitted, light inserted from a window, etc.), and a filter plate F that transmits light emitted by irradiation of excitation light B by a parasite included in the inspection object M. Prepare. The filter plate F is provided on the shade S so that an operator can look into the inspection region R from the outside of the inspection device D through the filter plate F. Below the shade S, an opening OP for inserting and removing the inspection object M with respect to the inspection region R is provided.

The parasite of the inspection object M differs depending on the fish species, and the wavelength at which the parasite emits light also varies depending on the type of the parasite. Therefore, as the light irradiation part E, the light source which irradiates the excitation light B which light-emits a parasite is selectively used. For example, when anisakis is detected, a light source that irradiates ultraviolet rays having a wavelength of 300 to 400 nm is used. Moreover, when there are a plurality of fish species to be inspected, a plurality of light sources for emitting the respective parasites are used, and these are selectively lit. Alternatively, a broadband wavelength light source is used, and a filter that selectively transmits the excitation light B acting on the parasite to be detected is used. Therefore, the light irradiation part E here is comprised with the light source which irradiates the excitation light B, the light source which irradiates the light of a broadband wavelength, and the filter which selectively permeate | transmits the excitation light B from the light. Including.

The shade S forms an inspection region R that is shaded from room light in an area BA where the inspection object M is arranged, that is, an area BA where the excitation light B is irradiated from the light irradiation unit E. That is, the shade S forms an inspection region R that is dark enough to visually recognize the light emission of the parasite in the area BA.

Generally, the brightness on the table is inversely proportional to the square of the distance from the light source. Therefore, in the case where a plurality of light sources having the same luminous intensity are arranged on the ceiling, assuming that the illuminance on the table when the light source is directly above is 1, the illuminance from the light source irradiated at an incident angle of 60 degrees is 3/4. The illuminance from the light source irradiated at an incident angle of 45 degrees is reduced to ½. Therefore, as shown in FIG. 2, the light from all the room lights L irradiated from the range A at least at an incident angle of 45 degrees or more around the room light L immediately above the shade S is shaded. As shown in FIGS. 1 and 2, if the shadow inspection region R is secured as shown in FIGS. 1 and 2, the darkness of the inspection region R can be made dark enough to allow the light emission of the parasite to be visually recognized. Has been confirmed by experiments.

However, the area of the shadow inspection area R decreases as the shade S moves away from the cooking table C, and the brightness of the shadow increases conversely. Therefore, the area of the shadow inspection region R is the area surrounded by the lower edge of the shade S that makes the shadow (if a part is cut off, the part is complemented by a straight line). On the other hand, it was confirmed by an experiment how much% or more the darkness was such that the luminescence of the parasite could be visually recognized in the shadow inspection region R. In the experiment, it is confirmed that if there is a shadow inspection region R having an area ratio of about 50% or more on a table of 1000 lux, the light emission of the parasite can be visually recognized in the shadow inspection region R. That is, the area of the inspection region R is preferably 50% or more with respect to the area surrounded by the lower edge of the shade S forming the region.

In addition, since the brightness of the kitchen is required to be 50 lux or more, the illuminance in the laboratory is too bright. Further, when the area 50% in this case is represented by the length ratio of one side, the length of one side of the shadow is about 0.7 with respect to the length 1 of one side of the lower end edge of the shade S. That is, it is sufficient that the length of one side of the shadow inspection region R is approximately 70% or more with respect to the length of one side of the lower edge of the shade S making the shadow.

The opening OP is a portion where the inspection object M is taken in and out of the inspection region R which is a shadow. In the inspection apparatus D shown in FIG. 1, the shade S is floated from the cooking table C, and the gap is an opening OP for taking in and out the inspection object M. In this case, for example, the light irradiation unit E and the shade S are suspended from the ceiling, or the light irradiation unit E and the shade S are suspended from the horizontal arm at the top of the stand attached to the edge of the cooking table C. To do. Thereby, since the cooking table C below the shade S can be widely opened, there is an advantage that even if the inspection device D is arranged on the narrow cooking table C, it does not get in the way. In addition, since the operator can inspect the inspection object M by feeding it from the side below the shade S, the operator can inspect the operation one after another in conjunction with cooking and inspection.

Further, instead of such a configuration, the shade S may be arranged on the cooking table C. In that case, an opening OP is formed on one side surface of the shade S or two opposite side surfaces, and each of the remaining three side surfaces (for example, the lower end portion of each side surface) leaving the back surface, and the opening OP is interposed therebetween. Thus, the inspection object M may be inserted into and removed from the shade S.

Such an opening OP is set to a height and a width at which the inspection object M stored in the tray T can be taken in and out freely. If it does so, since the tray T inserted in the opening part OP will block | close the opening part OP at the time of a test | inspection and will shield light to some extent, a parasite will become easier to be detected.

In addition, since the opening OP serves as an entrance for inserting a hand or arm (at least a worker's hand) from when the parasite is removed, the opening OP has a size or a shape that enables such an operation. In the inspection apparatus D shown in FIG. 1, the filter plate F on the front side is configured to be flipped up so that hands and arms can be inserted from the front side. Further, when the height of the inspection object M varies greatly depending on the fish species, the shade S is preferably configured to be movable up and down, and the height of the opening OP can be freely adjusted. Then, the height position of the shade S can be adjusted depending on the fish species. Furthermore, if the shade S is lowered, the shadow inspection region R can be darkened. Therefore, if the parasite is difficult to see, the shade S can be lowered to carefully examine the hard-to-see parasite.

The filter plate F acts to transmit light emitted by the parasite. For example, since Anisakis emits blue fluorescence, a filter that transmits blue visible light is used. Accordingly, the reflected light that is easily confused with the light emission of the parasite can be attenuated, and the light emission of the parasite can be detected more clearly. In addition, when the excitation light B is ultraviolet light, a filter plate F having a UV cut function for blocking the excitation light B is used. Thereby, an operator's eyes can be protected. That is, the filter plate F is a filter plate in which the transmittance of light emitted from anisakis is larger than the transmittance of ultraviolet rays. The filter plate F may include a combination of a plurality of filters having different characteristics, and may be a filter plate in which the light transmittance in the fluorescence wavelength region of the parasite Anisakis is larger than the light transmittance in other wavelength regions. .

Also, when the wavelength of light emission varies depending on the parasite, a filter plate F corresponding to each wavelength is prepared and used selectively. Further, when it is necessary to frequently replace the filter plate F, the filter plate F may be configured as follows. For example, filter plates F having different transmission wavelengths are disposed on the side surfaces of the shade S, and each filter plate F is covered with a light-shielding screen. And the shade S is comprised so that rotation in a horizontal direction is possible, and it is comprised so that the filter board F to be used can always be moved to the front surface of the person who test | inspects. Thus, the operator moves the corresponding filter plate F to the front according to the parasite to be detected, opens the light shielding screen, and looks into the inspection region R. Then, even if there are multiple types of parasites to be detected, it can be efficiently inspected.

Further, the filter plate F is disposed at a position where the operator can look into the inspection region R from the outside of the inspection device D via the filter plate F. For example, a window is formed on one side of the shade S, and a filter plate F is attached to the window so that the inspection region R can be seen from there. In the inspection apparatus D shown in FIG. 1, one side surface of the shade S is opened, and a filter plate F is attached thereto. As described above, when the filter plate F is attached to the shade S, the light from the room light L passes through the filter plate F and enters the shade S. However, when inspecting, the operator looks into the filter plate F. Therefore, the worker acts as a shade. Therefore, for example, when a window is formed on the upper surface of the shade S of FIG. 1 and the filter plate F is attached thereto, the filter plate F is hidden by the head of the peeping operator. Small size. Further, when the filter plate F is disposed on one side surface of the shade S, the room illumination L is shielded to some extent, unlike the case where it is disposed on the upper surface. However, when the light shielding is incomplete, the half mirror may be superimposed on the front surface of the filter plate F so that the light of the room illumination L is reflected by the half mirror and the light in the shade S is transmitted as it is. . Thereby, the test | inspection area | region R can be maintained at appropriate darkness.

Further, the filter plate F may be provided not only on one side surface of the shade S but also on the opening OP below the shade plate S, or attached across one side surface of the shade S and the opening OP below the shade S. May be. In the inspection apparatus D shown in FIG. 1, the front side of the shade S is opened and the filter plate F is attached thereto, but the invention is not limited to this.

In use, the inspection apparatus D is installed on the cooking table C. At that time, when strong light is inserted into the area BA from the window, the installation location and the installation direction of the inspection apparatus D can be changed. When this is not possible, a shade S that blocks light from the window is provided separately. Then, the height of the opening OP is adjusted to a height at which the tray T accommodating the inspection object M can be freely taken in and out, and the excitation light B is irradiated from the light irradiation unit E. Then, the operator feeds the inspection object M stored in the tray T into the inspection region R and looks into the filter plate F. If there is a parasite in the inspected object M, it emits light. Therefore, the operator reaches out from the opening OP and removes the detected parasite using tweezers or a suction nozzle. When that is finished, the operator pulls out the tray T from the inspection region R and finishes.
[Second Embodiment]

FIG. 3 is an external perspective view of the inspection apparatus according to the second embodiment. In the following description, in FIG. 3, the side with the filter plate 7 is defined as the front side, and the opposite side is defined as the back side.

The inspection device 10 shown in FIG. 3 is designed to be waterproof with a stainless steel plate as a device for detecting anisakis. The inspection apparatus 10 includes an L-shaped support frame 1, a first light shielding plate 3 projecting forward like a ridge from the upper part of the back side plate 2 of the support frame 1, and both left and right side surfaces of the first light shielding plate 3. The second

light shielding plates

4, 5 attached to the front side of the first light shielding plate 3, the filter plate 7 attached to the front side of the first light shielding plate 3 via the torque hinge 6, and the inner side of the first light shielding plate 3. And two black lights 8 attached to the ceiling surface. However, the support frame 1, the back side plate 2, the first light shielding plate 3, and the second

light shielding plates

4 and 5 may be formed of a synthetic resin or the like instead of the stainless steel material.

A plurality of mounting holes 4 a are provided in the vertical direction at the edge on the back side of the second light shielding plate 4. The height of the opening 12a between the second light shielding plate 4 and the horizontal plate 9 can be adjusted by changing the positions of the mounting holes 4a. Similarly, a plurality of mounting holes (not shown) are provided in the vertical direction on the edge of the second light shielding plate 5 on the back side. By changing the positions of the mounting holes, the height of the opening 12a between the second light shielding plate 5 and the horizontal plate 9 can be adjusted.

The black light 8 corresponds to the light irradiation part E of the inspection apparatus D shown in FIG. 1, and irradiates the excitation light B of FIG. That is, in the inspection apparatus 10, the black light 8 is a light irradiation unit that irradiates the inspection object disposed in a predetermined area with excitation light. In particular, the black light 8 irradiates ultraviolet rays including excitation light B that emits anisakis. As an example, a 10 watt straight tube type black light manufactured by NEC is used for the black light 8. The black light 8 includes a ballast and a lighting tube. Further, in order to avoid exposure of the black light 8, an optical filter 80 is attached immediately below. The optical filter 80 transmits a wavelength in a band centered at 338 nm for emitting anisakis. A power switch 11 is disposed on the top surface of the first light shielding plate 3. The black light 8 is connected to an outlet via a power cable (not shown).

The shade S of the inspection device D shown in FIG. 1 is constituted by the back side plate 2, the first light shielding plate 3, and the second

light shielding plates

4 and 5 of the support frame 1. That is, in the inspection apparatus 10, the back side plate 2, the first light shielding plate 3, and the second

light shielding plates

4 and 5 of the support frame 1 are shades that form an inspection region that is shaded from room light in a predetermined area. . Therefore, in the second embodiment, the front surface of the shade S is open. The first light shielding plate 3 has a quadrangular shape in accordance with the tray T (see FIG. 1). For this reason, the shadow inspection region R (see FIG. 1) is formed on the horizontal plate 9 in the second embodiment. Further, an opening 12 a for taking in and out the tray T is provided between the lower edge of the second

light shielding plates

4 and 5 and the horizontal plate 9. That is, in the inspection apparatus 10, the opening 12a for taking in and out the inspection object with respect to the inspection area is provided in the shade. The height of the opening 12a is slightly higher than the height of the tray T so that the tray T can be easily put in and out. Further, the front lower end portions of the second

light shielding plates

4 and 5 are cut obliquely. Thereby, an operator's hand and arm can be inserted from the cut opening 12b.

In the inspection apparatus 10, the filter plate 7 transmits the light emitted by the parasite included in the inspection object when irradiated with the excitation light. In the inspection apparatus 10, the filter plate 7 is provided on the shade so that an operator can look into the inspection area through the filter plate 7 from the outside of the inspection apparatus.

As the filter plate 7 on the front side, a translucent resin plate that transmits blue visible light and attenuates the ultraviolet light of the black light 8 is used. Specifically, the filter plate 7 is a resin plate having a transmittance in the wavelength region of 400 to 500 nm of 50% or more and a transmittance in the ultraviolet region of less than about 20%. In addition to this, the inspection apparatus 10 shown in FIG. 3 uses SUMPEX ST-300 (Sumitomo acrylic sales) having a transmittance of 590 to 655 nm of less than 30%. This selectively transmits 400-500 nm around the Anisakis fluorescence wavelength peak (anisakis fluorescence wavelength region) and attenuates other wavelength regions (wavelength regions other than the anisakis fluorescence wavelength region) as much as possible. This is to make it easier to visually recognize the fluorescence from Anisakis. As for ultraviolet rays, the ultraviolet rays are attenuated to protect the eyes and skin. As the resin plate, a filter having a low transmittance in a wavelength region other than 400 to 500 nm, for example, less than 30%, may be employed. Other ways to achieve this include a combination of filters or a combination of coatings. For example, a filter whose transmittance rises from around 365 nm, is 85% or more in the wavelength region of 400 nm or more, and 15% or less in the wavelength region of 365 nm or less, and is 85% or more and 300 nm in the wavelength region of 350 to 600 nm. And a filter having a transmittance of 30% or less in a wavelength region of less than 800 nm or more, the transmittance in the wavelength region of 400 to 600 nm is 50% or more, 365 nm or less, and the transmittance in the wavelength region of 800 nm or more. A filter that is 10% or less can be obtained. That is, in the inspection apparatus 10, the filter plate 7 includes a combination of a plurality of filters having different characteristics, and the light transmittance in the fluorescence wavelength region of the parasite Anisakis is larger than the light transmittance in other wavelength regions. It is a filter plate. In other words, the filter plate 7 includes a combination of a plurality of filters having different characteristics, selectively transmits the fluorescence wavelength region of anisakis, and attenuates other wavelength regions. In the inspection apparatus 10, the filter plate 7 has a transmittance of 50% or more in the wavelength region of 400 to 500 nm.

Also, the periphery of the filter plate 7 is reinforced by overlapping frame-shaped stainless steel plates. And the filter board 7 can be flipped up centering | focusing on the torque hinge 6 attached to the upper part. The torque hinge 6 holds the flipped up filter plate 7 at that angle regardless of the inclination angle. This is because the filter plate 7 is held at an inclination angle that matches the operator's line of sight, and when removing the parasite, it is flipped up to facilitate the work. The inspection apparatus 10 is designed so that the filter plate 7 does not come into contact with the horizontal plate 9 even if the filter plate 7 is suspended vertically.

The inspection apparatus 10 is designed such that the shadow inspection area R (see FIG. 1) is approximately 65 to 70% of the area of the first light shielding plate 3. The inspection apparatus 10 is designed such that when the tray T containing the inspection object is inserted from the opening 12a, the tray T is substantially closed except for the opening 12b on the near side. Yes.

Further, when the inspection device 10 is placed on the cooking table C (see FIG. 1), there is a step corresponding to the height of the horizontal plate 9, so that in some cases, as shown in FIG. In addition, the plate 13 having the same thickness may be laid so as to eliminate the step. In this way, the tray T can be easily taken in and out of the inspection region R. Further, instead of such a configuration, the horizontal plate 9 is eliminated, and instead of this, a clamp is provided at the lower end of the back side plate 2 so as to sandwich the edge of the cooking table C up and down, and the first light shielding plate 3 is secured by the clamp. It may be kept horizontal. Further, when the tray T is not inserted, ultraviolet rays leak from the

openings

12a and 12b to the outside. Therefore, a coating that absorbs ultraviolet rays is applied to the horizontal plate 9 and the back side plate 2 or a surface treatment that does not reflect ultraviolet rays is applied. You may give it. Alternatively, a sensor for detecting the intrusion of the tray T is provided on the back side plate 2, and when the tray T does not enter by the detection signal, the lighting of the black light 8 is stopped and the tray T enters, You may comprise so that it may light.

In use, the operator turns on the power switch 11, inserts the tray T on which the inspection objects M of FIG. 1 are arranged, through the opening 12 a and looks into the filter plate 7. If there is a parasite in the fish body, it emits light, so that the operator can confirm the lit parasite as in the circled area in the photograph shown in FIG. If confirmed, the operator reaches out from the opening 12b and removes the detected parasite using tweezers or a suction nozzle. Such a process is performed on the inspection apparatus 10 every time the fish body is cooked in a fillet shape. In the photograph shown in FIG. 4, the image seen at the top is the image reflected on the back side plate 2.
[Modification]

As mentioned above, although 1st and 2nd embodiment of this invention was described, this invention is not limited to this, Other structures are employable. For example, when the amount of processing is large, the inspection apparatus 10 is arranged at a place different from the cooking table C, and a space between them is connected by a roller conveyor or the like, and the trays T in which the fillets are stored are carried to the inspection apparatus 10 one after another. You may make it test | inspect. In that case, the horizontal plate 9 is constituted by a roller conveyor.

If the tray T to be used is larger than the inspection region R, the tray T must be repeatedly inserted into the inspection region R while changing the direction of the tray T. In such a case, for example, as shown in FIG. In addition, the second

light shielding plates

4 and 5 are configured to be flipped up around the hinge 31, and flexible fan-shaped

light shielding members

41 and 51 are provided on the front and rear sides of the second

light shielding plates

4 and 5, respectively. The size of the inspection region R may be adjusted by changing the inclination angle of the second

light shielding plates

4 and 5 and the opening degree of the fan-shaped

light shielding members

41 and 51 according to the size of T.

Alternatively, the back plate 2 may be eliminated, and instead the first light shielding plate 3 may be suspended by a support mechanism such as a desk lamp to open the periphery of the inspection region R. In this case, a light shielding plate is also provided on the back side. By so doing, it is possible to inspect efficiently by moving the tray T larger than the inspection region R back and forth and left and right. In addition, the first light shielding plate 3 and the black light 8 are separated and attached to a support mechanism such as a desk lamp so that not only the height of the first light shielding plate 3 but also the height of the black light 8 can be individually varied. In other words, these can be used by adjusting them to optimum positions in accordance with the inspected portions of various sizes and the size of the tray T for storing them.

DESCRIPTION OF SYMBOLS D ... Inspection apparatus, BA ... Area (predetermined area), M ... Inspected object, B ... Excitation light, E ... Light irradiation part, R ... Inspection area | region, S ... Shade, OP ... Opening part, F ... Filter board.

Claims

A light irradiation unit for irradiating the inspection object arranged in a predetermined area with excitation light;
In the predetermined area, a shade that forms an inspection area that becomes a shadow from room light;
An inspection apparatus comprising: a filter plate that transmits light emitted by irradiation of the excitation light by a parasite included in the inspection object.
The excitation light is ultraviolet light that emits the parasite Anisakis,
The inspection apparatus according to claim 1, wherein the filter plate is a filter plate in which a transmittance of light emitted from the anisakis is larger than a transmittance of the ultraviolet rays.
2. The inspection apparatus according to claim 1, wherein the shade is provided with an opening for taking the inspection object into and out of the inspection area.
The inspection apparatus according to claim 3, wherein the opening is an opening into which at least an operator's hand is inserted when the detected parasite is removed.
The inspection apparatus according to claim 1, wherein an area of the inspection region is 50% or more with respect to an area surrounded by a lower end edge of the shade forming the region.
The inspection apparatus according to claim 1, wherein the shade is movable up and down.
The filter plate includes a combination of a plurality of filters having different characteristics, and is a filter plate in which the light transmittance in the fluorescence wavelength region of the parasite Anisakis is larger than the light transmittance in other wavelength regions. Item 2. The inspection apparatus according to Item 1.
The inspection apparatus according to claim 7, wherein the filter plate has a transmittance of 50% or more in a wavelength region of 400 to 500 nm.