JP7275199B2 - Protective gear for spectacle wearers - Google Patents

Description

TECHNICAL FIELD The present invention relates to protective equipment for spectacle wearers using a sheet in which a plurality of structures are provided on at least one surface of a flexible transparent base material at a pitch equal to or less than the wavelength of visible light.

Personal protective equipment is often used as a means of preventing occupational infections among healthcare workers. Eye protection, especially to prevent exposure to blood and bodily fluids, is used during examinations and surgeries to help prevent occupational infections with blood-borne pathogens (HIV, HBV, HCV).

Japanese Patent No. 2939627 discloses a face mask and visor in which a transparent visor is connected to the mask. Patent Document 2 (Japanese Utility Model Registration No. 3160039) discloses an eye shield detachably attached to a mask. Patent Document 3 (Japanese Laid-Open Patent Publication No. 3-500497) discloses a face protector having slots for passing the temples of spectacles.

Recently, minimally invasive arthroscopic surgery has been increasing, and 3D endoscopes capable of stereoscopic observation have been developed to compensate for the shortcomings of planar endoscopic images, and have been adopted in actual surgery. There are three major 3D methods: an anaglyph method that uses red and blue color filters, a polarization method that changes the left and right polarization directions, and a method that uses a liquid crystal shutter. Anaglyph has not been adopted because of its color reproducibility, and in consideration of the burden on the operator during long-time surgery, the polarized glasses method, which uses lightweight glasses, is often adopted. Among the polarizing spectacles methods, the circular polarization method, which is less affected by the tilt and posture of the operator's face, is often used.

Japanese Patent No. 2939627 Utility Model Registration No. 3160039 JP-A-3-500497

From the perspective of preventing occupational infections, all persons engaged in surgery and nurses conducting examinations who may be exposed to bodily fluids should wear eye protection such as eye shields. Those who wear corrective spectacles, doctors who wear surgical loupes, and those who wear polarizing spectacles to use a 3D endoscope often use them as protective equipment.

However, corrective glasses, surgical magnifiers, and polarizing glasses generally fulfill their respective functions sufficiently, but from the perspective of preventing infection, it is important to avoid contact with splashed liquids such as blood and bodily fluids from the top or sides of the glasses. This is insufficient as an infection control measure.

Therefore, in order to obtain sufficient protection, it is necessary to wear an eye shield in addition to wearing glasses. I feel bad. Eye shields that are fixed to the mask and eye shields that can be detachably attached to the mask have been proposed. There was a problem that it was easy to fog up. In addition, a slotted eye shield has been proposed so that the eye shield can be placed between the eyeglasses and the face. There were problems such as poor performance and easy clouding.

In addition, stretched PET films are often used in protective devices that have hitherto been on the market, but protective devices using PET films have the drawback of disturbing polarized light and making 3D observation impossible.

Furthermore, in any of the above cases, the reflection at the interface of the eye shield increases, and there is a problem that the reflected light easily causes dazzle and eyestrain in a high-luminance environment under a shadowless light.

Therefore, the present invention uses a sheet in which a plurality of structures are provided on at least one surface of a flexible transparent base material at a pitch equal to or less than the wavelength of visible light, thereby providing spectacle wearers with excellent wearability and visibility. The purpose is to provide protective equipment for

In order to solve the above-described problems, a protective device for spectacle wearers according to the present invention has a plurality of structures provided on at least one surface of a flexible transparent base material at a pitch equal to or less than the wavelength of visible light. In a protective device for a spectacle wearer using a sheet, a pair of left and right mounting portions consisting of a plurality of cut grooves are formed at a position where the spectacles are attached to the temples , and the pair of left and right mounting portions are inserted through which the temples of the spectacles are inserted. It consists of a pair of clamping pieces that clamp the mouth and the temples of the spectacles .

According to the present invention, by inserting and holding one temple of the spectacles and holding the other temple by the mounting part, the spectacles can be easily mounted on the spectacles and can be prevented from coming off from the spectacles. Therefore, even when wearing corrective spectacles or polarizing spectacles used for arthroscopic surgery, for example, the spectacle wearer's protective equipment can be used as an eye shield to prevent infection caused by splashing of liquids such as blood and bodily fluids. As a result, infection can be effectively prevented without impairing the user's visibility and workability.

FIG. 1 is a front view showing protective equipment for spectacle wearers to which the present invention is applied. FIG. 2 is a perspective view showing a state in which the spectacle wearer's protector to which the present invention is applied is attached to spectacles. FIG. 3 is a sectional view of a sheet constituting protective equipment for spectacle wearers to which the present invention is applied. FIG. 4 is a sectional view of another sheet constituting protective equipment for spectacle wearers to which the present invention is applied. FIG. 5 is a perspective view of another sheet constituting protective equipment for spectacle wearers to which the present invention is applied. FIG. 6 is a perspective view of a transfer roll master on which a pattern of an antireflection layer composed of a moth-eye structure is formed. FIG. 7 is a cross-sectional view showing the process of forming an antireflection layer composed of a moth-eye structure, (A) is a state in which the surface of the base material coated with the transfer material is in close contact with the roll master, and (B) is A sheet with a moth-eye structure transferred on one side, (C) is a state in which a transfer material is applied to the other side of the sheet with a moth-eye structure transferred on one side, and the sheet is brought into close contact with the roll master, and (D) is on both sides. 4 shows a sheet to which a moth-eye structure has been transferred. FIG. 8 is a cross-sectional view showing a sheet laminate in which sheets having moth-eye structures formed on both sides are laminated. 9A and 9B are diagrams showing cut grooves in which breakage preventing portions are formed, where (A) shows breakage prevention grooves and (B) shows breakage prevention holes. FIG. 10 is a front view showing the protector for spectacle wearers in which half-cutting is performed according to the boundary between the temple and the lens position of the spectacles to form a folding line. FIG. 11 is a front view showing a protective device for spectacle wearers in which a half cut has been made along the upper side of the spectacles to form a fold line.

Hereinafter, protective equipment for spectacle wearers to which the present invention is applied will be described in detail with reference to the drawings. It should be noted that the present invention is not limited to the following embodiments, and of course various modifications are possible without departing from the gist of the present invention. Also, the drawings are schematic, and the ratio of each dimension may differ from the actual one. Specific dimensions and the like should be determined with reference to the following description. In addition, it goes without saying that there are portions with different dimensional relationships and ratios between the drawings.

As shown in FIG. 1, a protective device for spectacle wearers 1 to which the present invention is applied has a plurality of structures provided on at least one surface of a flexible transparent base material at a pitch equal to or less than the wavelength of visible light. A pair of left and right mounting portions 3A and 3B, each made up of a plurality of cut grooves, are formed at positions where the eyeglasses are mounted on the temples of the spectacles wearer using the sheet 2 described above.

The spectacle wearer protective equipment 1 can be used even when wearing various types of spectacles 4 such as corrective spectacles, surgical loupes with temples, and polarizing spectacles for using a 3D endoscope, as shown in FIG. As shown, the pair of left and right mounting portions 3A and 3B are mounted on the temples 5 of the spectacles 4, thereby preventing the top and side surfaces of the spectacles 4 from coming into contact with scattered liquids such as blood and bodily fluids.

[Sheet]
The sheet 2 constituting the spectacle wearer protective equipment 1 has a plurality of structures provided on at least one surface of a flexible transparent base material at a pitch equal to or less than the wavelength of visible light, thereby providing an antireflection function. It is an optical element provided. In the following, the fine concave-convex structure having this antireflection function is referred to as a "moth-eye structure". By using the sheet 2 having the moth-eye structure, the spectacle wearer's protector 1 does not impair the visibility even when the sheet 2 is laminated. Therefore, the spectacle wearer protective equipment 1 uses a sheet laminate in which the sheets 2 are detachably laminated, so that the sheets 2 can be removed as necessary when the visibility of the sheets 2 is lowered due to dirt on the surface of the sheets 2. By peeling off, each deterioration factor can be removed, and convenience can also be improved.

As shown in FIG. 3, the sheet 2 is provided with structures 12 on both sides of a substrate 11 via a base layer 13 at a pitch equal to or less than the wavelength of visible light. have a function. A plurality of structures 12 are regularly arranged in a plurality of rows on the base layer 13 on the front and back surfaces of the substrate 11 . That is, the front and back surfaces of the sheet 2 have an uneven shape due to the moth-eye structure composed of the plurality of structures 12 . Note that the sheet 2 may be provided with the structure 12 only on the surface of the substrate 11 .

By providing such an uneven shape on the front and back surfaces of the sheet 2, the sheet 2 has an optical adjustment function with less wavelength dependence and excellent visibility. It can be applied to the surface of the body. That is, it can contribute to the realization of an adherend with excellent visibility.

Here, the “optical adjustment function” indicates an optical adjustment function for transmission characteristics and reflection characteristics. The sheet 2 as an optical element has transparency to visible light, for example, and its refractive index n is preferably 1.30 or more and 2.00 or less, more preferably 1.34 or more and 2.00 or less. is preferably within the range of However, it is not limited to this.

The refractive index of the structure 12 is preferably the same as or substantially the same as the refractive index of the substrate 11 . This is because internal reflection can be suppressed and contrast can be improved.

FIG. 3 shows an example in which the structures 12 are formed on the front and back surfaces of the substrate 11 with the base layer 13 interposed therebetween. ing. In this case, the base layer 13 is an optical layer integrally molded with the structure 12 on the bottom surface side of the structure 12, has transparency, and has the same energy ray-curable resin composition as that of the structure 12. It may be formed by curing an object or the like.

Further, as shown in FIG. 4, the spectacle wearer protective device 1 may be formed by using a sheet 2 having no base layer 13 and having a moth-eye structure formed directly on a substrate 11 by a plurality of structures 12. good.

Furthermore, as shown in FIG. 5, the spectacle wearer protective device 1 may use a sheet 2 in which the base body and the structure are integrally formed. The sheet 2 shown in FIG. 5 has structures 12 integrally formed on both sides of a base 11 .

[Base material]
Here, the base 11 will be further described. The substrate 11 is, for example, a transparent substrate having transparency. Examples of the material of the substrate 11 include a material containing a transparent plastic material as a main component, but the material is not particularly limited to these materials.

When a plastic material is used as the substrate 11, an undercoat layer (not shown) may be further provided by surface treatment in order to further improve the surface energy, coatability, smoothness, flatness, etc. of the surface of the plastic material. Examples of the undercoat layer include organoalkoxymetal compounds, polyesters, acrylic-modified polyesters, and polyurethanes. In addition, in order to obtain the same effect as providing an undercoat layer, the surface of the substrate 11 may be subjected to corona discharge treatment, UV irradiation treatment, or the like.

When the substrate 11 is a plastic film, the substrate 11 can be obtained, for example, by stretching the above-mentioned resin or by diluting it with a solvent, forming it into a film, and drying it. The thickness of the substrate 11 is preferably selected appropriately according to the application of the sheet 2, and may be, for example, about 10 μm or more and 500 μm or less. Examples of the shape of the substrate 11 include a film shape and a plate shape, but the shape is not particularly limited to these shapes. Note that the film includes a sheet.

Materials for the substrate 11 include, for example, methyl methacrylate (co)polymer, polycarbonate, styrene (co)polymer, methyl methacrylate-styrene copolymer, cellulose diacetate, cellulose triacetate, cellulose acetate butyrate, polyester, polyamide, Polyimide, polyethersulfone, polysulfone, polypropylene, polymethylpentene, polyvinyl chloride, polyvinyl acetal, polyetherketone, polyurethane, glass, etc., but not limited to these.

Here, when the spectacle wearer's protective equipment 1 is attached to polarizing spectacles type 3D endoscope spectacles, etc., the base material 11 is a non-uniform material with little molecular orientation or orientation unevenness in order to prevent disturbance of polarized light. A stretched transparent substrate is used.

A crosstalk value is a measure of the degree of deterioration of a 3D image. The crosstalk value is a quantification of the mixture of images (crosstalk) such that an image that should be seen by the right eye is seen by the left eye, and an image that should be seen by the left eye is seen by the right eye. is said to be 5-10%.

In the polarization method used in medical 3D endoscopes, right-eye and left-eye images are alternately displayed for each scanning line on the display, and the images are converted into circularly polarized light with different rotation directions. Polarizing glasses convert a circularly polarized image into linearly polarized light with a 1/4 wavelength plate, and pass it through polarizing plates set at different angles for the right eye and left eye, respectively, for the right eye or the left eye. You can observe the image for

At this time, if there is no obstacle between the display and the polarizing glasses, polarization disturbance will not occur. Circularly polarized light is disturbed by the retardation of stretched PET film, which is widely used, and becomes elliptically polarized light. After the elliptically polarized light passes through the quarter-wave plate, it becomes linearly polarized light at an angle different from the original, which causes crosstalk.

From the viewpoint of preventing deterioration of 3D images due to crosstalk, the in-plane retardation value of the transparent substrate used for eye shields and the like is preferably 100 nm or less, more preferably 30 nm or less, and still more preferably 20 nm or less. .

Examples of unstretched transparent substrates include polycarbonate, polyethylene terephthalate, triacetyl cellulose, polyester, polyethylene naphthalate, polystyrene, polyurethane, polyvinyl alcohol, polymethyl methacrylate, cycloolefin, polypropylene, and polyethylene. Among these unstretched transparent substrates, polycarbonate is preferably used as the substrate 11 from the viewpoint of impact resistance and versatility.

[Structure]
Next, the structure 12 will be explained. In general, the wavelength band of visible light is 360 nm to 830 nm, but in this embodiment, structures 12 are regularly arranged with a size equal to or smaller than the wavelength band of visible light. From this point of view, the arrangement pitch of the structures 12 shall not exceed 350 nm. The structures 12 may be of various shapes, such as cone-shaped, column-shaped, and needle-shaped.

As will be described later, the structure 12 is formed by using a roll master exposure apparatus in which a pattern corresponding to the moth-eye structure is formed on a transfer material 36 such as an energy ray-curable resin composition applied to the substrate 11 . It is formed by being cured after being transferred.

The cured transfer material 36 may be hydrophilic. The transfer material 36 preferably contains one or more hydrophilic functional groups. Examples of such hydrophilic functional groups include hydroxyl, carboxyl, and carbonyl groups.

Also, the energy ray-curable resin product forming the structure 12 may have different physical properties on both sides of the substrate 11 . For example, by selectively using water repellency and hydrophilicity depending on the intended use, a specific surface can be provided with functions such as anti-fogging.

As the energy ray-curable resin composition, it is preferable to use an ultraviolet-curable resin composition. Moreover, the energy ray-curable resin composition may contain fillers, functional additives, and the like, if necessary.

A UV-curable resin composition contains, for example, an acrylate and an initiator.

The ultraviolet curable resin composition contains, for example, monofunctional monomers, bifunctional monomers, multifunctional monomers, etc. Specifically, the following materials are used singly or in combination.

That is, the "monofunctional monomer" includes, for example, carboxylic acids (acrylic acid), hydroxys (2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 4-hydroxybutyl acrylate), alkyl or alicyclic monomers (isobutyl acrylate , t-butyl acrylate, isooctyl acrylate, lauryl acrylate, stearyl acrylate, isobornyl acrylate, cyclohexyl acrylate), other functional monomers (2-methoxyethyl acrylate, methoxyethylene glycol acrylate, 2-ethoxyethyl acrylate, tetrahydrofurfuryl acrylate , benzyl acrylate, ethyl carbitol acrylate, phenoxyethyl acrylate, N,N-dimethylaminoethyl acrylate, N,N-dimethylaminopropylacrylamide, N,N-dimethylacrylamide, acryloylmorpholine, N-isopropylacrylamide, N,N- Diethylacrylamide, N-vinylpyrrolidone, 2-(perfluorooctyl)ethyl acrylate, 3-perfluorohexyl-2-hydroxypropyl acrylate, 3-perfluorooctyl-2-hydroxypropyl-acrylate, 2-(perfluorodecyl) ethyl-acrylate, 2-(perfluoro-3-methylbutyl)ethyl acrylate), 2,4,6-tribromophenol acrylate, 2,4,6-tribromophenol methacrylate, 2-(2,4,6-tri bromophenoxy)ethyl acrylate), 2-ethylhexyl acrylate, and the like.

Examples of the "bifunctional monomer" include tri(propylene glycol) diacrylate, trimethylolpropane-diallyl ether, urethane acrylate and the like.

Examples of the "polyfunctional monomer" include trimethylolpropane triacrylate, dipentaerythritol penta and hexaacrylate, ditrimethylolpropane tetraacrylate, and the like.

Among them, preferable resin compositions constituting the transfer material 36 include 2-hydroxyethyl acrylate, acrylmorpholine, glycerol acrylate, polyether acrylate, N-vinylformamide, N-vinylpyrrolidone, N-vinylcaprolactone, ethoxylate. Diethylene glycol acrylate, methoxytriethylene glycol acrylate, polyethylene glycol acrylate, EO-modified trimethylolpropane triacrylate, EO-modified bisphenol A diacrylate, aliphatic urethane oligomer, polyester oligomer and the like can be mentioned.

Examples of the "initiator" include 2,2-dimethoxy-1,2-diphenylethan-1-one, 1-hydroxy-cyclohexylphenylketone, 2-hydroxy-2-methyl-1-phenylpropan-1-one etc. can be mentioned.

As the "filler", for example, both inorganic fine particles and organic fine particles can be used. Examples of inorganic fine particles include metal oxide fine particles such as SiO ₂ , TiO ₂ , ZrO ₂ , SnO ₂ and Al ₂ O ₃ .

Examples of "functional additives" include leveling agents, surface conditioners, antifoaming agents, and the like.

By forming a moth-eye structure composed of a fine concave-convex structure as the structure 12, the spectacle wearer protective device 1 has a high degree of antireflection function. Here, the antireflection performance of the spectacle wearer protective equipment 1 is 5% or less, preferably 1% or less, and more preferably 0.5% or less in total on the front and back surfaces. A shadowless light used as a light source during surgery has an illuminance of 100,000 lx or more, and even a few percent of the reflected light is perceived as dazzling, so it is required to suppress the reflection as much as possible. The spectacle wearer protective equipment 1 is provided with an antireflection layer consisting of a moth-eye structure in which a plurality of structures are formed at a pitch equal to or smaller than the wavelength of visible light on a transparent base material 11 as the structure 12. Since the angle dependency is small and the antireflection performance is high, it can be suitably used as a medical eye shield.

In addition, the spectacle wearer protective equipment 1 has antifogging properties by forming a plurality of structures having a pitch equal to or smaller than the wavelength of visible light, which constitute an antireflection layer composed of a moth-eye structure, from a hydrophilic resin. can be added.

Further, the spectacle wearer protective equipment 1 can be provided with even better antireflection performance by forming antireflection layers made of moth-eye structures on both sides of the transparent base material 11 .

[Seat manufacturing process]
Next, the manufacturing process of the sheet 2 having the moth-eye structure will be described. A moth-eye structure is formed on the sheet 2 by transferring the pattern using a roll master exposure apparatus on which a pattern corresponding to the moth-eye structure is formed.

[Roll master]
As shown in FIG. 6, the roll master 41 has, for example, a columnar or cylindrical shape, and the columnar or cylindrical surface is used as a forming surface for forming the plurality of structures 12 on the substrate surface. . Predetermined structures 42 are two-dimensionally arranged on the molding surface by, for example, dry etching, wet etching, or the like. The structure 32 has, for example, a concave or convex shape with respect to the molding surface. Glass, for example, can be used as the material of the roll master 31, but the material is not particularly limited to this material.

The plurality of structures 42 arranged on the molding surface of the roll master 41 and the plurality of structures 12 arranged on the surface of the substrate 11 described above have an inverted concave-convex relationship. That is, the shape, arrangement, arrangement pitch, etc. of the structures 42 of the roll master 41 are the same as those of the structures 12 of the substrate 11 .

[Transfer step 1]
As shown in FIG. 7A, after the transfer material 36 is applied to one surface of the substrate 11, the surface to which the transfer material 36 is applied is transferred to the roll master 41 on which the pattern corresponding to the moth-eye structure is formed. be in close contact. Next, after the transfer material 36 is cured by irradiating the transfer material 36 with energy rays such as ultraviolet rays from the energy ray source 37, the substrate 11 integrated with the cured transfer material 36 is peeled off. As a result, as shown in FIG. 7B, a sheet 2 having a plurality of structures 12 formed on one side of the substrate 11 is obtained. At this time, a base layer 13 may be further formed between the structure 12 and the substrate 11, if necessary.

The energy ray source 37 can emit energy rays such as electron beams, ultraviolet rays, infrared rays, laser beams, visible rays, ionizing radiation (X-rays, α-rays, β-rays, γ-rays, etc.), microwaves, or high-frequency waves. It is sufficient if there is, and is not particularly limited.

[Transfer process 2]
When obtaining a sheet 2 having a plurality of structures 12 formed on both sides of a substrate 11, further, as shown in FIG. After the transfer material 36 applied on the opposite surface of the substrate 11 is brought into close contact, the transfer material 36 is cured by irradiating the transfer material 36 with energy rays such as ultraviolet rays from the energy ray source 37 . Then, the substrate 11 integrated with the hardened transfer material 36 is peeled off. As a result, a sheet 2 having a plurality of structures 12 formed on both sides of the substrate 11 is obtained as shown in FIG. 7(D). At this time, a base layer 13 may be further formed between the structure 12 and the substrate 11, if necessary.

The resin composition used as the transfer material 36 in this transfer step 2 can be the same as in the transfer step 1 described above.

A protective film may be attached to the surface of the sheet 2 obtained by the transfer step 1 or the transfer step 2. As a result, the sheet 2 can prevent the structural body 12 from being destroyed in subsequent steps, transportation, and the like.

[Shape forming process]
The sheet 2 obtained above is cut into a predetermined shape according to the spectacles to be worn, and is processed with cut grooves constituting the mounting portion 3 described later, thereby forming the protective device 1 for spectacle wearers. be. A numerically controlled cutting machine, laser processing machine, punching press machine, or the like can be used for cutting into grooves and predetermined shapes. The use of a punching press is preferable because the cutting grooves and the cutting to the predetermined size can be performed in one step.

[Sheet laminate]
As shown in FIG. 8, the spectacle wearer protective device 1 to which the present invention is applied may use a sheet laminate 50 in which a plurality of sheets 2 are detachably laminated via an adhesive layer 51. . By using the sheet laminate 50 in which the sheets 2 are detachably laminated, the spectacle wearer protective equipment 1 can be used when there is no time to wipe off the contaminants, or when the contaminants are dangerous in the first place. Even if it is not preferable to do so, the contaminated sheets 2 can be peeled off one by one, so that the field of vision can be immediately restored and the need to contact dangerous substances is eliminated.

Moreover, by providing the moth-eye structures formed by the regular arrangement of the plurality of structures 12 on both sides of the sheet 2, when a plurality of the sheets 2 are laminated and joined with the adhesive layer 51 such as an adhesive, the moth-eye structures Even if a gap is formed between the layers, it is possible to prevent a decrease in transmittance, reduce reflection at the interface, and achieve antireflection performance.

In addition, such a moth-eye structure is basically compatible with all wavelengths, unlike an AR film that corresponds to a specific wavelength used in liquid crystal displays, etc., so when a subject is viewed through the moth-eye structure, the There is also an advantage that the color does not change. In addition, due to the characteristics of the moth-eye structure, it can be said to be suitable for use in an environment where the illuminance rises sharply, or where it takes time for the human eye to get used to the illuminance difference.

Here, the sheet laminate 50 according to this embodiment includes a plurality of sheets 2 each provided with a moth-eye structure composed of a structure 12 having unevenness having a pitch equal to or smaller than the wavelength of visible light on the front and back surfaces of a substrate 11. At least the ends of the sheet 2 are laminated with an adhesive layer 51 such as an adhesive. The sheet stack 50 has voids 52 between the structures 12 of the stacked sheets 2 . Various patterns are conceivable for the gap 52, including, for example, the case where it is provided with a resin such as an adhesive. That is, the void 52 may be an air layer or a resin layer.

In addition, the overlapping structures 12 may be separated from each other without being in contact with each other through the gap 52, or the tips of the structures 12 may be in point contact with each other, and the tips of the structures 12 may face each other. It may partially enter the concave portion of the structure 12 .

In the embodiment, since the structures 12 are regularly arranged, they have regularity when viewed in either the vertical direction or the horizontal direction.

The sheet laminate 50 is obtained by laminating each sheet with an adhesive layer 51 such as an adhesive. The adhesive layer 51 is provided in an outer peripheral portion of the laminate outside the visual field of the user when used as the spectacle wearer protective device 1, that is, in a portion other than the visible portion. For example, the structures 12 may be partially bonded to each other by the adhesive layer 51 at the four corners of the sheet 2 or at the left and right end portions extending in the lateral direction with a predetermined width and a predetermined length.

In this way, by not providing the adhesive as the adhesive layer 51 on the entire surface of the sheet 2, the releasability of the sheet 2 itself is improved, and the releasability of the adhesive as the adhesive layer 51 (due to residue) Visibility reduction avoidance) is also improved, and the occurrence of distortion due to the thickness of the adhesive as the adhesive layer 51 can also be avoided. It goes without saying that if the transmission performance is given top priority, the entire surface may be attached with an adhesive or the like. In this case, the resin composition is appropriately selected so that the refractive index and the like are suitable for improving visibility.

[Applying part]
As described above, the sheet 2 or the sheet laminate 50 is formed with a pair of left and right mounting portions 3A and 3B each having a plurality of cut grooves according to the mounting position of the spectacles 4 on the temples 5 . The configuration of the mounting portion 3 will be described below with reference to FIGS. 1 and 2, taking the seat 2 as an example.

The mounting part 3 has a mounting part 3A consisting of an insertion opening through which the temple of the spectacles is inserted, and a mounting part 3B consisting of a pair of clamping pieces 20A and 20B for clamping the temple of the spectacles.

The mounting portion 3A forms an insertion opening by arranging first and second cut grooves 15 and 16 arranged in a direction crossing the insertion direction of the temple 5 of the spectacles 4 . The first and second cut grooves 15 and 16 are formed substantially parallel to each other and have a length through which the temple 5 of the spectacles 4 can be inserted. As shown in FIG. 2, the mounting portion 3A allows the temples 5 to pass through the first cut grooves 15 from the back side of the sheet 2 to the front side of the sheet 2, and then through the second cut grooves 16 from the front side of the sheet 2. One temple 5 of the spectacles 4 is movably attached by inserting the spectacles 4 .

The mounting portion 3B includes third and fourth cut grooves 21 and 22 arranged in parallel, and third and fourth cut grooves 2
It has a fifth cut groove 23 extending between 1 and 22 . The third and fourth cut grooves 21 and 22 are provided in a direction crossing the temple 5 of the spectacles 4 and are formed substantially parallel. In addition, the fifth cut groove 23 extends between a position slightly returned from one end of the third cut groove 21 to the other end side and a position slightly returned to the one end side from the other end of the fourth cut groove 22. , third and fourth cut grooves 21 and 22 obliquely cross each other.

As a result, the mounting portion 3B has a first clamping piece 20A consisting of two sides of the third cut groove 21 and the fifth cut groove 23, and two sides of the fourth cut groove 22 and the fifth cut groove 23. A second clamping piece 20B made of is formed. The first and second clamping pieces 20A and 20B are rotatable about one end side or the other end side of the third and fourth cut grooves 21 and 22, respectively, and as shown in FIG. When the temples 5 of the spectacles 4 are inserted therebetween, the temples 5 are clamped from above and below by elastic restoring force due to the stiffness of the sheet 2 .

When the spectacle wearer's protector 1 is put on the spectacles 4, first, one of the temples 5 is inserted through the mounting portion 3A. Next, the wearing part 3A is brought closer to the lens side of the spectacles 4, and the spectacle wearer protector 1 is deformed so as to follow the spectacle lenses. Then, the spectacle wearer protector 1 can be worn on the spectacles 4 by holding the other temple 5 vertically between the pair of clamping pieces 20A and 20B of the mounting portion 3B. If there is a possibility that the deformed state of the protective device for spectacle wearers 1 cannot be maintained only by the elastic force of the pair of clamping pieces 20A and 20B, the pair of clamping pieces 20A and 20B may be adhered together with an adhesive tape or the like. good.

As described above, the spectacle wearer protective device 1 is easily worn on the spectacles 4 by inserting and holding one temple 5 of the spectacles 4 with the mounting portion 3A and clamping the other temple 5 with the mounting portion 3B. In addition, falling off from the spectacles 4 can be prevented. Therefore, even when wearing corrective spectacles or polarizing spectacles used for arthroscopic surgery, for example, the spectacle wearer protective equipment 1 is used as an eye shield for preventing infection caused by splashing of liquids such as blood and bodily fluids. As a result, infection can be effectively prevented without impairing the user's visibility and workability. In addition, since the temple 5 of the spectacles 4 is inserted through the mounting portion 3A of the spectacle wearer protective device 1, even if the temple 5 is detached from between the pair of clamping pieces 20A and 20B of the mounting portion 3B, Incidents such as falling into the surgical field can be avoided.

In addition, since the spectacle wearer's protector 1 is formed using the sheet 2 on which the moth-eye structure is formed, the polarized spectacles are not disturbed, and the spectacles wearer's protector 1 can be worn on polarized spectacles type 3D endoscope spectacles. visibility can be maintained. Furthermore, since the spectacle wearer protective equipment 1 is formed using the sheet 2 on which the moth-eye structure is formed, in a high-luminance environment under a shadowless light, dazzlement due to reflected light and eyestrain may occur. Since there is no problem such as ease of use, the user's workability is not impaired.

In addition to being used as a medical eye shield, the spectacle wearer protective device 1 can be used for various purposes for attaching the sheet 2 to the spectacles, and can be easily attached to and detached from the temples 5 of the spectacles 4 in any of the uses. In addition, visibility and workability are not impaired when the device is attached.

[Auxiliary notch]
In addition, the mounting portion 3A may be provided with auxiliary cut grooves 17 in one or both of the first and second cut grooves 15 and 16 . One or a plurality of auxiliary cut grooves 17 are formed along the first and second cut grooves 15 and 16 in a direction orthogonal to the first and second cut grooves 15 and 16 . By providing the auxiliary cut grooves 17, the spectacle wearer protector 1 is formed with locking pieces 18 that lock the temples 5 when the temples 5 are inserted into the mounting portions 3A forming the insertion openings. Therefore, even when the first and second cut grooves 15 and 16 are formed to be longer than the height of the temple 5, the spectacle wearer protective device 1 can be , displacement and rattling can be prevented.

Similarly, the mounting portion 3B may also be provided with auxiliary cut grooves 24 in one or both of the third and fourth cut grooves 21 and 22 . One or a plurality of auxiliary cut grooves 24 are formed along the third and fourth cut grooves 21 and 22 in a direction orthogonal to the third and fourth cut grooves 21 and 22 . By providing the auxiliary cut grooves 24, the spectacle wearer protective device 1 locks the temples 5 from the horizontal direction when the temples 5 are clamped vertically by the first and second clamping pieces 20A and 20B. A locking piece 25 is formed. Therefore, the spectacle wearer protective device 1 can hold the temples 5 from the vertical direction and can be locked from the horizontal direction, thereby preventing slippage and rattling.

[Break prevention part]
Moreover, the mounting portions 3A and 3B may be provided with breakage prevention portions 26 for preventing breakage at one end and the other end of the first to fourth cut grooves 15, 16, 21 and 22, respectively. The break prevention part 26 prevents the sheet 2 from breaking due to the load applied when the temple 5 is attached or detached, starting from one end and the other end of the first to fourth cut grooves 15, 16, 21, 22. It is.

For example, as shown in FIG. 9A, the breakage preventing portion 26 is provided at one end and the other end of each of the first to fourth cut grooves 15, 16, 21, 22. , 16, 21, 22 are formed as breakage prevention grooves 26A. Alternatively, as shown in FIG. 9B, the breakage prevention portion 26 is provided at one end and the other end of each of the first to fourth cut grooves 15, 16, 21, 22, and the first to fourth cut grooves It is formed as break prevention hole 26B having a diameter larger than the line width of grooves 15, 16, 21, and 22. As shown in FIG.

[half cut]
In addition, as shown in FIG. 10 , the spectacle wearer protective device 1 may be half-cut according to the boundary between the temple 5 and the lens position of the spectacles 4 to be worn to form a folding line 30 . By forming the folding line 30, the sheet 2 can be easily deformed, and the pair of clamping pieces 20A and 20B can be prevented from coming off the temple 5 due to the stiffness of the sheet 2.例文帳に追加

11, the spectacle wearer protective device 1 may be formed by half-cutting the sheet 2 along the upper side of the spectacles 4 to form a folding line 31. As shown in FIG. By deforming the sheet 2 along the folding line 31, the spectacles wearer protective device 1 can cover the upper part of the spectacles 4 and effectively protect the spectacles 4 from splashed liquids such as blood and body fluids.

Next, examples of the present invention will be described. In this example, sheet samples were prepared by changing the formation surface (single side/both sides) of the transparent substrate and the antireflection layer composed of the moth-eye structure of the transparent substrate, and the retardation value (λ = 550 nm) was obtained as follows. ), reflectance (%), and 3D performance (degree of occurrence of crosstalk) were measured and evaluated.

[Retardation value]
A retardation value at a measurement wavelength (λ) of 550 nm was measured using a phase difference measuring device (RETS-100: Otsuka Electronics Co., Ltd.).

[Reflectance]
A UV-visible spectrophotometer (V-500: JASCO Corporation) was used to measure the reflection value at an incident angle of 5°.

[3D image observation test]
A 3D image is displayed on a polarizing 3D monitor (D2342P: LG Electronics Co., Ltd.), and the 3D image is observed with the attached polarizing glasses wearing protective gear for eyeglass wearers according to the following examples and comparative examples, and the state of stereoscopic vision is visually observed. observed and evaluated.

The evaluation criteria for 3D performance are:
◯: No problem with stereoscopic vision △: Crosstalk occurs, but stereoscopic vision is possible ×: Stereoscopic vision is impossible.

[Example 1]
In Example 1, an ultraviolet curable resin was dropped onto an exposure master on which a moth-eye structure was patterned, and a non-stretched polycarbonate film (thickness of 150 μm) was placed thereon, and a rubber roller was applied so as to form a film with a constant thickness. After that, the film was ironed through the film and then irradiated with ultraviolet rays to form a moth-eye type antireflection layer on the same film to obtain a sample.

As a result of various evaluations, the retardation value was 16 nm and the reflectance was 4.7%. Also, in the 3D image observation test, stereoscopic vision was possible without any problem (○).

[Example 2]
In Example 2, an ultraviolet curable resin was dropped onto an exposure master on which a moth-eye structure was patterned, and an unstretched cycloolefin copolymer film (100 μm thick) was covered thereon so as to have a constant thickness. The film was ironed with a rubber roller and then irradiated with ultraviolet rays to form a moth-eye type antireflection layer on the film to obtain a sample.

As a result of various evaluations, the retardation value was 3 nm and the reflectance was 4.5%. Also, in the 3D image observation test, stereoscopic vision was possible without any problem (○).

[Example 3]
In Example 3, an ultraviolet curable resin was dropped onto an exposure master on which a moth-eye structure was patterned, and a non-stretched polycarbonate film (thickness of 150 μm) was placed thereon, and a rubber roller was applied so as to form a film with a constant thickness. After that, the film was ironed through the film and then irradiated with ultraviolet rays to form a moth-eye type antireflection layer on the same film. A moth-eye type antireflection layer was similarly transferred to the opposite side to obtain a sample.

As a result of various evaluations, the retardation value was 16 nm and the reflectance was 0.4%. Also, in the 3D image observation test, stereoscopic vision was possible without any problem (○).

[Example 4]
In Example 4, an ultraviolet curable resin was dropped onto an exposure master on which a moth-eye structure was patterned, and an unstretched cycloolefin copolymer film (100 μm thick) was covered thereon so as to have a constant thickness. The film was ironed with a rubber roller and then irradiated with ultraviolet rays to form a moth-eye antireflection layer on the film. A moth-eye type antireflection layer was similarly transferred to the opposite side to obtain a sample.

As a result of various evaluations, the retardation value was 3 nm and the reflectance was 0.8%. Also, in the 3D image observation test, stereoscopic vision was possible without any problem (○).

[Example 5]
In Example 5, an ultraviolet curable resin was dropped onto an exposure master on which a moth-eye structure was patterned, and a non-stretched polycarbonate film (thickness of 300 μm) was placed thereon, and a rubber roller was applied so as to form a film with a constant thickness. After that, the film was ironed through the film and then irradiated with ultraviolet rays to form a moth-eye type antireflection layer on the same film. A moth-eye type antireflection layer was similarly transferred to the opposite side to obtain a sample.

As a result of various evaluations, the retardation value was 100 nm and the reflectance was 0.5%. Also, although crosstalk occurred in the 3D image observation test, stereoscopic vision was possible (Δ).

[Comparative Example 1]
In Comparative Example 1, an ultraviolet curing resin was dropped onto an exposure master on which a moth-eye structure was patterned, and a stretched polyethylene terephthalate (PET) film (125 μm thick) was covered thereon so as to have a constant thickness. Then, the film was ironed with a rubber roller and then irradiated with ultraviolet rays to form a moth-eye type antireflection layer on the film to obtain a sample.

As a result of various evaluations, the retardation value was 5500 nm and the reflectance was 5.1%. Also, in the 3D image observation test, stereoscopic vision was not possible at all (x).

[Comparative Example 2]
In Comparative Example 2, an ultraviolet curable resin was dropped on an exposure master on which a moth-eye structure was patterned, and a stretched polyethylene terephthalate (PET) film (100 μm thick) was covered thereon so as to have a constant thickness. Then, the film was ironed with a rubber roller and then irradiated with ultraviolet rays to form a moth-eye type antireflection layer on the film. A moth-eye type antireflection layer was similarly transferred to the opposite side to obtain a sample.

As a result of various evaluations, the retardation value was 5500 nm and the reflectance was 0.6%. Also, in the 3D image observation test, stereoscopic vision was not possible at all (x).

[Comparative Example 3]
In Comparative Example 3, a non-stretched polycarbonate film (150 μm thick) was used as a sample.

As a result of various evaluations, the retardation value was 18 nm and the reflectance was 10.9%. Also, in the 3D image observation test, stereoscopic vision was possible without any problem (○).

[Comparative Example 4]
In Comparative Example 4, an unstretched cycloolefin copolymer film (100 μm thick) was used as a sample.

As a result of various evaluations, the retardation value was 3 nm and the reflectance was 8.8%. Also, in the 3D image observation test, stereoscopic vision was possible without any problem (○).

[Comparative Example 5]
In Comparative Example 5, a stretched cycloolefin copolymer film (75 μm thick) was used as a sample.

As a result of various evaluations, the retardation value was 100 nm and the reflectance was 8.8%. Also, although crosstalk occurred in the 3D image observation test, stereoscopic vision was possible (Δ).

[Comparative Example 6]
In Comparative Example 6, an oriented polyethylene terephthalate (PET) film (125 μm thick) was used as a sample.

As a result of various evaluations, the retardation value was 5500 nm and the reflectance was 11.2%. Also, in the 3D image observation test, stereoscopic vision was not possible at all (x).

As shown in Table 1, in Examples 1 to 5 in which a non-stretched polycarbonate film or a non-stretched cycloolefin copolymer film was used as the transparent substrate of the protective equipment for spectacle wearers 1, the in-plane retardation was as low as 100 nm or less. It has 3D performance that suppresses crosstalk and enables stereoscopic viewing. On the other hand, in Comparative Example 1 using the stretched PET film, the in-plane retardation was large, crosstalk occurred, and stereoscopic viewing was completely impossible. From this, it can be seen that a non-stretched transparent base material can be suitably used as the base material when the spectacles wearer protective equipment 1 is used in 3D spectacles such as 3D endoscope spectacles.

In addition, in Comparative Examples 3 to 6, since the antireflection layer made of the moth-eye structure is not provided, the reflectance increases, impairs visibility, and causes dazzle and eyestrain, resulting in workability for the user. became a loss.

In Examples 1 to 5, the reflectance was low in Examples 3 to 5, in which the antireflection layer composed of the moth-eye structure was formed on both sides, while in Examples 1 and 2, the antireflection layer was formed on only one side. From this, it can be seen that providing antireflection layers on both sides of the substrate is advantageous in terms of suppressing reflection.

As described above, the in-plane retardation is kept low by using the spectacle wearer protective equipment provided with the film formed with the moth-eye antireflection layer according to Examples 1 to 5 as a medical eye shield. 3D images do not collapse even when the 3D endoscope glasses of the polarization system are attached, and surgery can be performed while seeing a clear observation image. In addition, since the films according to Examples 1 to 5 are provided with a plurality of structures at a pitch equal to or less than the wavelength of visible light on the substrate, reflection at the interface can be prevented, and shadowless with high illuminance. Surgery can be safely performed under light.

1 spectacle wearer protective equipment 2 sheet 3 mounting part 4 spectacles 5 temple 11 base 12 structure 13 base layer 15 first cut groove 16 second cut groove 17 auxiliary cut groove , 20 clamping piece, 21 third cut groove, 22 fourth cut groove, 23 fifth cut groove, 24 auxiliary cut groove, 30, 31 folding line, 36 transfer material, 37 energy beam source, 41 roll master , 42 structure, 50 sheet laminate, 51 adhesive layer, 52 void

Claims (8)

Protective equipment for spectacle wearers using a sheet in which a plurality of structures are provided at a pitch equal to or less than the wavelength of visible light on at least one surface of a flexible transparent base material,
The sheet is formed using the unstretched transparent base material,
A pair of left and right mounting parts consisting of a plurality of cut grooves are formed at the mounting position of the eyeglasses to the temple ,
A protective device for spectacle wearers, wherein the pair of left and right mounting portions includes an insertion opening through which the temple of the spectacle is inserted and a pair of clamping pieces that clamp the temple of the spectacle. 2. The protector for spectacle wearers according to claim 1, wherein the sheet has a reflectance of 4.7% or less at an incident angle of 5[deg.]. 3. The protective device for spectacle wearers according to claim 1, wherein said structure is formed of a cured product of a hydrophilic UV-curable resin. The protective equipment for spectacle wearers according to any one of claims 1 to 3, wherein the sheet has an in-plane retardation value of 100 nm or less at a measurement wavelength (λ) of 550 nm. 5. The protective device for spectacle wearers according to any one of claims 1 to 4, wherein a bending line is formed according to the boundary between the temple and the lens position of the spectacles. The protective device for spectacle wearers according to any one of claims 1 to 5, wherein a folding line is formed along the upper side of the spectacles of the sheet. 7. The protective equipment for spectacle wearers according to claim 1, wherein the spectacles are polarized spectacles for observing a 3D image displayed on a polarized 3D monitor. Protective equipment for wearers of infection-preventing spectacles,
A protective device for a wearer of infection-preventing spectacles, comprising the structure according to any one of claims 1 to 7.

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