JP6220213B2 - Polarizing member, spectacle lens, and patterned sunglasses - Google Patents

Description

The present invention, polarization member having a polarizing plate, about the spectacle lens, and with patterns Sangura scan using the polarization member.

  Patent Document 1 discloses an invention relating to a spectacle lens decoration method. According to the present invention, a desired decorative pattern is provided in the vicinity of the peripheral edge of at least one of the front and back surfaces of the spectacle lens by a laser at a uniform depth along the curved surface of the lens. Eyeglass lenses are decorated by coloring paints or cloisonne on the part of the decorative pattern.

  Further, Patent Document 2 has at least a reflective polarizing film layer and an absorbing polarizing film layer from the light incident side as a lens for polarized sunglasses, and these are arranged in this order with the transmission axes aligned. An invention relating to a polarizing mirror spectacle lens whose light incident side is a convex spherical surface or an aspherical surface is disclosed.

JP 2007-58146 A International Publication No. 2013/051489 Pamphlet

  Conventionally, when text is put or decorated on a spectacle lens, as shown in Patent Document 1, it has been necessary to avoid the center of the spectacle lens and to engrave a small outer peripheral portion so as not to obstruct the field of view.

  Patent Document 2 does not describe how to put characters or decorate the polarizing lens, but as shown in Patent Document 1, the back side of the spectacle lens is etched by laser processing or the like. In addition, light diffusion and refraction occur, and in the case of printing, etc., it is difficult to decorate without obstructing the field of view other than the outer periphery of the spectacle lens in order to reduce transparency and deteriorate visibility. there were.

Therefore, the present invention has been made in view of the above points, and in particular, a polarizing portion that can visually recognize a pattern from the light incident side and cannot visually recognize the pattern from the opposite side to the light incident side. The purpose is to provide materials .

  Further, using the polarizing member, a spectacle lens excellent in fashionability, advertising property, etc., in which the pattern cannot be seen from the eyepiece side so as not to obstruct the view, and the pattern can be recognized from the light incident side, and The object is to provide patterned sunglasses.

  The inventor can change the visibility of the pattern between the light incident side and the opposite side by controlling the arrangement of the polarizing plate and the pattern formation, and in particular, spectacles that require fashionability and advertising properties. It came to the invention which can be preferably used for a lens etc. Specifically, the present invention is shown as follows.

Polarization member in the present invention includes, in order from the incident side of light, and the light reflective polarizing plate having a pattern, and a light absorbing polarizing plate, Ri said light greens arranged in a direction that passes through the layer, the pattern Is formed by eliminating the light reflecting function of the light reflective polarizing plate, so that the polarization transmission axis of the light reflective polarizing plate and the polarization transmission axis of the light absorbing polarizing plate coincide with each other. are arranged, characterized in Rukoto. As a result, the pattern can be visually recognized when observed from the light incident side (front surface side of the polarizing member), while the light incident side is observed from the opposite side (back surface side of the polarizing member) with respect to the light incident side. Compared to, it is difficult to see the pattern. Accordingly, if the polarizing member of the present invention is used as, for example, a spectacle lens and the opposite side to the light incident side is the eyepiece side (the eyeglass wearer side), the light incident side is not disturbed. The pattern is visible from the side facing the wearer. The formation of the pattern can be achieved by performing a process of eliminating the light reflection function on the portion to which the pattern is attached, among the light reflection functions of the light reflective polarizing plate. Due to the coincidence between the polarization transmission axis of the light-reflective polarizing plate and the polarization transmission axis of the light-absorbing polarization plate, a decrease in transmittance can be suppressed.

  In this invention, it is preferable that the said pattern is provided in the same surface side as the light reflective polarizing part of the said light reflective polarizing plate. At this time, it is preferable that the said pattern and the light reflective polarizing part are provided in the opposing surface with the said light absorptive polarizing plate of the said light reflective polarizing plate. Thus, by providing the pattern and the light-reflecting polarizing part on the surface of the light-reflecting polarizing plate facing the light-absorbing polarizing plate, the visibility of the pattern from the opposite side to the light incident side is more effectively achieved. Can be suppressed.

  In the present invention, it is preferable that the difference between the transmittance of light transmitted through the pattern portion and the transmittance of light transmitted through the portion having the light reflecting function of the light reflective polarizing plate is 10% or less. . By reducing the transmittance difference in this way, the pattern can be effectively prevented from being visually recognized when observed from the opposite side to the light incident side.

  Moreover, in this invention, it is preferable that the difference of the reflectance of the light of the part of the said pattern and the part which has the light reflection function of the said light reflective polarizing plate is 10% or more. By increasing the reflectance difference in this way, the pattern can be effectively visually recognized when observed from the light incident side.

  In the present invention, the light reflective polarizing plate is preferably a wire grid polarizing plate. Alternatively, the light reflective polarizing plate may be a multilayer birefringent polymer.

  Moreover, in this invention, it is preferable that the said polarizing member is a film form. Thereby, a polarizing member can be appropriately affixed on a curved surface or the like, and the utility of the polarizing member can be improved, such as being able to bend the polarizing member.

In the present invention, it is preferred to have a viscosity adhesive layer on one surface of the polarizing member. At this time, before Kineba adhesive layer are preferably provided on the surface opposite to the light incident surface of the polarization member.

  The spectacle lens according to the present invention is characterized in that a curved surface is provided by thermoforming the polarizing member described in any of the above.

  Moreover, the sunglasses with a pattern in this invention have the said polarizing member described in either of the above, It is characterized by the above-mentioned.

  In this way, by configuring the spectacle lens and the patterned sunglasses using the polarizing member in the present invention, the formation area and size of the pattern made up of characters, figures, etc. can be freely set, and therefore fashionability and It can be configured with excellent advertising properties.

  According to the polarizing member of the present invention, the pattern can be visually recognized when observed from the light incident side (front surface side of the polarizing member), while from the opposite side (back surface side of the polarizing member) with respect to the light incident side. When observed, the pattern is less visible compared to the light incident side. Accordingly, if the polarizing member of the present invention is used as, for example, a spectacle lens and the opposite side to the light incident side is the eyepiece side (the eyeglass wearer side), the light incident side is not disturbed. The pattern is visible from the side facing the wearer.

It is sectional drawing of the polarizing member which concerns on this Embodiment. It is sectional drawing of the polarizing member which concerns on embodiment different from FIG. It is a perspective view of the light reflection polarizing plate and light absorption polarizing plate which comprise the polarizing member which concerns on this Embodiment. It is a schematic diagram which shows an example of the pattern which concerns on this Embodiment. It is a schematic diagram of a spectacle lens and patterned sunglasses using the polarizing member according to the present embodiment. It is sectional drawing which shows the manufacturing process of the polarizing member of this Embodiment. It is a schematic diagram which shows the manufacturing process of the pattern shown in FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of the polarizing member according to the present embodiment.

  In the polarizing member 1 shown in FIG. 1, a light-reflecting polarizing plate 2 having a pattern and a light-absorbing polarizing plate 3 are arranged in order from the light incident side in a direction in which light passes through the layer.

  The “light incident side” is the surface 2 a (light incident surface) side of the light reflecting polarizing plate (light reflecting polarizing layer) 2 and is opposed to the light absorbing polarizing plate (light absorbing polarizing layer) 3. The surface refers to the opposite side.

  The light reflective polarizing plate 2 in the present embodiment has a function of transmitting a predetermined linearly polarized light component of the incident light L1 and reflecting a linearly polarized light component orthogonal thereto. The light-reflective polarizing plate 2 is not limited in material and the like as long as it has such a function. For example, a film made of a multilayer birefringent polymer laminate, a wire grid type reflective polarizing film, or the like may be used. it can. As the light reflective polarizing plate 2, multilayer birefringent films APF and DBEF manufactured by 3M, wire grid polarizing plate (wire grid polarizing film) manufactured by Asahi Kasei E-Materials Co., Ltd., wire grid polarizing plate manufactured by MOTTEK, etc. There is.

  The light reflective polarizing plate 2 can adjust the reflectance and transmittance as appropriate. As a method for adjusting the reflectance and transmittance, when the light-reflective polarizing plate 2 is a multilayer birefringent film, a highly polarized portion and a highly transparent portion are desired by arbitrarily making a hole in the film. Can be distributed and processed so as to have a transmittance of. When the light-reflective polarizing plate 2 is a wire grid polarizing plate, a metal wire such as aluminum that exhibits polarizing properties is directly removed by laser etching, and an opening having a high transmittance is adjusted so that a desired transmittance can be obtained. And can be processed.

  In addition, as a method for removing a metal part such as aluminum, the metal part was previously covered with a desired pattern with an ultraviolet curable resin, an adhesive, or an adhesive and then covered with an etching solution such as alkali. The metal can be left only in the metal portion, whereby the light reflective polarizing plate 2 having a desired transmittance can be produced.

  In the light reflective polarizing plate 2, it is preferable that the “processed portion” from which the metal wire such as aluminum is removed is transparent. In this specification, “transparent” means, for example, a total light transmittance of 40% or more, preferably 50% or more. Since the light-absorbing polarizing plate 3 is disposed in the light-reflecting polarizing plate 2, for example, the polarization transmittance of the “processed portion” of the light-reflecting polarizing plate 2 is 90%, and the light-absorbing polarizing plate When the polarization transmittance of the plate 3 is 80%, the total light transmittance of the polarizing member 1 in the “processed portion” is 0.9 × 0.8 / 2 = 36%.

  The light absorbing polarizing plate 3 has a function of transmitting a predetermined linearly polarized light component of the incident light L1 and absorbing a linearly polarized light component orthogonal thereto. As long as the light-absorbing polarizing plate 3 has such a function, the material is not limited, and iodine or a dichroic dye is adsorbed on a film made of polyvinyl alcohol or a derivative thereof, and the film is stretched and oriented uniaxially. The film etc. which are made to manufacture can be used.

  The plate thicknesses of the light reflective polarizing plate 2 and the light absorbing polarizing plate 3 are about 0.5 to 400 μm, respectively. The total thickness of the polarizing member 1 is about 80 to 400 μm. Further, the plane size of the light-reflective polarizing plate 2, the light-absorbing polarizing plate 3, and the polarizing member 1 is appropriately changed depending on the usage application of the polarizing member 1. For example, when the polarizing member 1 is applied to a spectacle lens, the long side, the short side, or the diameter is about several centimeters.

  In the present embodiment, as shown in FIG. 1, the light reflective polarizing plate 2 is provided with a pattern 5. The light reflective polarizing plate 2 shown in FIG. 1 is a wire grid polarizing plate, and the surface (back surface) 2b of the light reflective polarizing plate 2 facing the light absorbing polarizing plate 3 has a fine uneven surface ( A light-reflecting polarizing portion 2c made of a metal wire surface is formed, and the light-reflecting polarizing portion 2c has a surface having a light reflecting function. On the other hand, a portion other than the light reflective polarizing portion 2c in the facing surface 2b is a portion where the metal wire is not formed (disappeared portion), and is schematically shown as a flat surface in FIG. The portion of the flat surface schematically shown in FIG. As shown in FIG. 3 (a perspective view of a light-reflecting polarizing plate and a light-absorbing polarizing plate constituting the polarizing member according to the present embodiment), the pattern 5 is, for example, a reverse pattern of alphabet “ABC” ( Mirror character). The pattern 5 has a reverse pattern because the reverse pattern is reversed when viewed from the surface (light incident surface) 2a side of the light reflective polarizing plate 2 shown in FIG. This is to make it visible. The pattern 5 is formed in an arbitrary shape such as a character or a figure. In FIG. 3 and FIG. 4, the character portion is painted black, but this is because the entire character portion (the region including not only the outline of the character portion but also the inside of the contour) loses the light reflection function, and the entire character portion is lighted. It means that the reflective polarizing part 2c is not formed.

  The portion of the pattern 5 provided on the light-reflective polarizing plate 2 has a reflectance difference with another portion (the light-reflecting polarizing portion 2c in FIG. 1) that does not have the pattern 5. In the present embodiment, it is preferable from the viewpoint of workability to create the pattern 5 by eliminating the light reflecting function of the light reflective polarizing plate 2. The disappearance of the light reflection function means that the degree of polarization is made lower than the degree of polarization of the light-reflecting polarizing part 2c that has not lost the light reflection function. Specifically, the degree of polarization is set to 10% or less. It is preferably 5% or less, and more preferably 0%.

  In the present embodiment, the portion of the pattern 5 of the light reflective polarizing plate 2 has a lower reflectance than the portion having no pattern (light reflective polarizing portion 2c), and the difference in reflectance between the two is as follows: From the viewpoint of recognizability from the surroundings, it is preferably 10% or more, more preferably 20% or more.

  As a method of forming the pattern 5 on the light-reflective polarizing plate 2, when the light-reflective polarizing plate 2 is a film made of a multilayer birefringent polymer, the light reflection function is lost by laser processing, machining, or the like in advance. Thus, the pattern 5 can be formed.

  When the light reflective polarizing plate 2 is a wire grid type reflective polarizing film composed of a metal wire, the metal wire portion is masked to the desired shape portion using a mold formed in a desired shape in advance. The pattern 5 can be formed by masking with an ultraviolet curable resin or a pressure-sensitive adhesive and then etching with alkali or the like to eliminate the metal wire portion. The pattern 5 can also be formed by eliminating the light reflection function by sublimating the metal wire portion with a laser marker or the like. FIG. 1 schematically shows the light-reflective polarizing portion 2c where the metal wire portion is left and the portion where the metal wire portion is eliminated and the pattern 5 is formed. Refer to FIG. 6B described later for the detailed structure. The same applies to FIG. 2 described later.

  In the present embodiment, the pattern 5 is given by processing the light-reflecting polarizing portion 2c of the light-reflecting polarizing plate 2 to eliminate the light reflecting function. Thus, the pattern 5 may not be provided on any part of the polarizing member 1, and the pattern 5 is attached to the same surface as the light reflection polarization part 2 c, so that the light incident side will be described in detail later. Therefore, the pattern 5 can be visually recognized, while the pattern 5 is hardly visible (not visible) from the side opposite to the light incident side (the back surface 1b side of the polarizing member 1).

  Of the incident light L1 incident on the light-reflecting polarizing plate 2, the light that passes through the light-reflecting polarizing plate 2 is provided with a portion having a light reflecting function, that is, a light-reflecting polarizing portion 2c made of a metal wire. There are light L2 that is transmitted and light L3 that is transmitted through a portion where the light reflecting function of the light-reflective polarizing plate 2 is lost, that is, the portion of the pattern 5. Here, the lights L2 and L3 are shown in FIG. 1 as emitted light from the back surface side of the polarizing member 1 (the eyepiece side of the spectacle lens). At this time, in the present embodiment, the transmittance of the part having the light reflecting function, that is, the part that transmits the light reflective polarizing part 2c made of the metal wire, and the part of the pattern 5 where the polarized part has disappeared, that is, the pattern 5 part. The difference from the transmittance is preferably within 10%, more preferably within 5% from the viewpoint of visibility. In the present embodiment, since the light-absorbing polarizing plate 3 is provided on the back side of the light-reflecting polarizing plate 2, the light-reflecting polarizing plate is provided if there is no pattern 5 out of the light transmitted through the pattern 5 portion. The light to be reflected by the portion 2 is absorbed by the light-absorbing polarizing plate 3 portion. In addition, in order to improve the specific light absorption function in the portion of the light-absorbing polarizing plate 3, the polarization transmission axis of the light-reflecting polarizing plate 2 and the polarization permeability of the light-absorbing polarizing plate 3 as described later. It is preferable to substantially match.

  As shown in FIG. 1, a light-reflecting polarizing plate 2 having a pattern 5 and a light-absorbing polarizing plate 3 are stacked in order from the light incident side. The direction in which light passes through the polarizing plates 2 and 3 is the thickness direction (thickness direction), and the light-reflecting polarizing plate 2 and the light-absorbing polarizing plate 3 are stacked in that direction. As shown in FIG. 1, a bonding layer 7 made of an adhesive or a pressure sensitive adhesive may be interposed between the light reflective polarizing plate 2 and the light absorbing polarizing plate 3.

  As shown in FIG. 1, when the polarizing member 1 is observed from the light incident side (the surface 2a side of the light-reflecting polarizing plate 2), in the portion A having the light-reflecting polarizing portion 2c and the light-absorbing polarizing plate 3, The reflective polarizing plate 2 transmits a predetermined linearly polarized light component of incident light (external light) L1 and reflects a linearly polarized light component orthogonal thereto (see the reflected light L4 in FIG. 1). On the other hand, in the portion 5 of the pattern 5 in which the light-reflecting polarizing portion 2c has disappeared (the transparent portion in which the light-reflecting function is lost and the degree of polarization is lower than that of the portion A) and the portion B having the light-absorbing polarizing plate 3, incident light ( (External light) L1 is not reflected, or even if it is reflected, the reflectance is smaller than portion A. For this reason, a difference in reflectance occurs between the portion A and the portion B. Due to this difference in reflectance, the pattern 5 is visually recognized when the polarizing member 1 is observed from the light incident side.

  On the other hand, when the polarizing member 1 is observed from the rear surface 1b side, the light L2 that passes through the portion A having the light-reflecting polarizing portion 2c and the light-absorbing polarizing plate 3, and the light-reflecting polarizing portion 2c has disappeared. The transmittance difference is generated between the portion L and the light L3 transmitted through the portion B having the light-absorbing polarizing plate 3. However, since the transmittance difference at this time is slight, the pattern from the back surface 1b side of the polarizing member 1 5 is difficult to be visually recognized. That is, in the portion B, if there is no pattern 5, a specific linearly polarized light component that should be reflected by the light-reflecting polarizing plate 2 is transmitted and incident on the light-absorbing polarizing plate 3. The linearly polarized light component incident on the polarizing plate 3 is absorbed by the light absorbing polarizing plate 3 (or the light absorbing polarizing plate 3 has a high absorption rate with respect to the linearly polarized light component). For this reason, a slight transmittance difference is not generated between the lights L2 and L3 transmitted through the light-absorbing polarizing plate 3.

  In the present embodiment, as shown in FIG. 3, the polarization transmission axis 8 of the light-reflecting polarizing plate 2 and the polarization transmission axis 9 of the light-absorbing polarizing plate 3 are substantially matched from the viewpoint of transparency. Preferably they are arranged. The polarization transmission axes 8 and 9 may be transmission axes that transmit P-polarized light or transmission axes that transmit S-polarized light. In order to obtain the effect of normal polarized sunglasses, it is preferable to have polarization transmission axes 8 and 9 through which P-polarized light is transmitted. On the other hand, from the viewpoint of the recognizability of the pattern 5, it is preferable to have polarization transmission axes 8 and 9 through which S-polarized light is transmitted.

  In this Embodiment, the fall of the transmittance | permeability of the polarizing member 1 can be suppressed by making the polarized light transmission axis 8 of the light reflective polarizing plate 2 and the polarized light transmission axis 9 of the light absorptive polarizing plate 3 substantially coincide. Thus, even if the pattern 5 is provided, the difference in shading is not felt depending on the presence or absence of the pattern 5.

  Here, when the polarized light transmission axis 8 of the light reflective polarizing plate 2 and the polarized light transmission axis 9 of the light absorptive polarizing plate 3 are projected on the same plane, the distance between the polarized light transmission axis 8 and the polarized light transmission axis 9 is determined. If the angle is in the range of −5 ° to + 5 °, particularly preferably −2 ° to + 2 °, the polarization transmission axis 8 of the light reflective polarizing plate 2 and the polarization transmission axis 9 of the light absorbing polarizing plate 3. Is defined as a state that substantially matches.

  The setting of the polarization transmission axes 8 and 9 shown in FIG. 3 can be arbitrarily set depending on whether priority is given to the function of normal polarized sunglasses, or advertising and fashion. In the case of polarized glasses for 3D television, the polarization transmission axis can be changed between the right eye and the left eye.

  As shown in FIG. 1, in this Embodiment, it can be set as the film which bonded the light reflective polarizing plate 2 and the light absorptive polarizing plate 3 through the joining layer 7 by an adhesive agent or an adhesive. . The bonding layer 7 is preferably an adhesive or pressure-sensitive adhesive excellent in transparency, water resistance, heat resistance, weather resistance and the like for optical applications. Typical examples thereof include urethane resin-based and acrylic resin-based adhesives. There are adhesives, and there are also isocyanate resins, epoxy resins and the like. In particular, a highly transparent acrylic resin is desirable for the pressure-sensitive adhesive. As an acid-free type pressure-sensitive adhesive that does not oxidize the metal surface, there is an acrylic pressure-sensitive adhesive specifically for metal thin films such as for ITO. Moreover, it is preferable to use a PSA pressure sensitive adhesive such as a silicon-based material having high heat resistance as the bonding layer 7.

  As shown in FIG. 1, when the polarizing member 1 of this Embodiment is made into a film, the slightly adhesive film 10 can be provided in the light absorptive polarizing plate 3 side of a film. Here, “slightly adhesive” refers to a state having tackiness and capable of being adhered to an adherend and being peelable with a weak force.

  As shown in FIG. 1, the slightly adhesive film 10 includes a substrate 11 and a slightly adhesive layer 12 provided on the surface of the substrate 11, and the substrate 11 and the light-absorbing polarizing plate 3 include the bonding layer 13. Are joined through. The material of the bonding layer 13 is the same as that of the bonding layer 7. The slightly adhesive layer 12 is located on the back surface 1 b of the polarizing member 1.

  Thus, by providing the slightly adhesive layer 12 on the polarizing member 1, the polarizing member 1 of the present embodiment can be configured to be freely affixed to or removed from the spectacle lens surface, for example. Various polarizing members 1 having different patterns can be freely attached to and detached from the spectacle lens, whereby the pattern of the spectacle lens can be easily changed.

  As the slightly adhesive layer 12, an adhesive having excellent transparency and self-adsorption property is preferable, and typical examples thereof include a fixed film manufactured by Fujikopian Co., Ltd. and a gel poly manufactured by Panac Co., Ltd. In the state in which the polarizing member 1 is commercialized, a protective sheet is provided on the surface of the slightly adhesive layer 12, and by removing the protective sheet, the surface of the slightly adhesive layer 12 is exposed and the polarizing member 1 is covered. Can be attached to the body. In order to make it easy to peel off the protective sheet, it is preferable that the protective sheet includes a protruding portion that protrudes outward from the side surface of the polarizing member 1.

  When the polarizing member 1 of the present embodiment is formed of a flexible film, a colored film can be bonded to the light absorbing polarizing plate 3 side of the polarizing member 1. Such a colored film can be prepared by mixing a light-transmitting resin such as polycarbonate or TAC with a dye such as azo, anthraquinone, or quinophthalone.

  In the present embodiment, as shown in FIG. 1, it is preferable to provide the light reflective polarizing portion 2 c and the pattern 5 of the light reflective polarizing plate 2 on the surface (back surface) 2 b facing the light absorbing polarizing plate 3. . Thereby, the light reflective polarizing part 2c of the light reflective polarizing plate 2 is not exposed, and the light reflective polarizing part 2c (wire grid surface) can be prevented from being damaged. On the other hand, when the light-reflecting polarizing part 2c and the pattern 5 are directed to the surface side, a layer (cover film such as TAC) for protecting the light-reflecting polarizing part 2c may be provided, but the cover film is extra. There is a problem that the total thickness is increased. Therefore, the total thickness can be reduced by adopting the configuration of FIG. In the configuration of FIG. 1, for example, the exposed TAC film surface (the surface 2a of the light-reflective polarizing plate 2) is subjected to an antireflection treatment or a hard coat treatment.

  FIG. 2 is a cross-sectional view of a polarizing member according to another embodiment different from FIG. 2, the same reference numerals as those in FIG. 1 denote the same members as in FIG.

  In FIG. 2, the light-absorbing polarizing plate 23 bonded to the light-reflecting polarizing plate 2 via the bonding layer 7 is sandwiched between protective members (protective films) 20 and 22 on the upper and lower sides of the light-absorbing polarizing layer 21. It is formed with a laminated structure. The protective members (protective films) 20 and 22 can be formed of polycarbonate, for example.

  In FIG. 2, the protective members (protective films) 20 and 22 can be colored. A colored layer (not shown) may be provided separately.

  FIG. 5 is a schematic diagram of a spectacle lens and patterned sunglasses using the polarizing member according to the present embodiment. The polarizing member 1 in the present embodiment can be used as a spectacle lens 30 as shown in FIG. 5A (cross-sectional view).

  For example, the polarizing member 1 according to the present embodiment can be thermoformed to give a curved surface to the polarizing member 1 to obtain the spectacle lens 30. At this time, the spectacle lens 30 can be produced by directly bonding the polarizing member 1 having a curved surface to the molded lens 31 optically corrected by injection molding or cast molding.

  Further, for example, in the polarizing member 15 shown in FIG. 2, a spectacle lens can be produced by forming a desired lens curved surface by processing such as hot press molding or vacuum forming and then trimming to a desired lens shape. That is, a spectacle lens can be formed by the polarizing member 15 alone without being bonded to the molded lens 31.

  Molded lens materials for injection molding include polycarbonate resin, polyamide resin, polyester resin, polyurethane resin, polyacrylic resin, polycycloolefin resin, polycycloolefin copolymer resin, polystyrene resin, polystyrene and methyl methacrylate. Resin, polyacrylonitrile / styrene resin, poly (4-methyl-1-pentene) resin, thermoplastic transparent resin such as cellulose resin, and the like can be used. Moreover, as resin of the cast molding method, thiopolyurethane resin, CR-39 resin, or the like can be used.

  When the polarizing member in the present embodiment is bonded to the molded lens 31, an adhesive can be used. As such an adhesive, an adhesive excellent in transparency, durability and the like is preferable, and an epoxy, urethane, acrylic or the like can be used. In order to improve adhesion, the lens surface is preferably subjected to plasma treatment or the like.

  These molded lens materials may be colored by mixing azo, anthraquinone and quinophthalone dyes. By coloring, the portion (pattern 5) from which the light reflecting function is lost can be colored.

  In addition, the spectacle lens 30 can be subjected to surface treatment such as antireflection, hard coating, and the like as necessary.

  Moreover, as shown to FIG. 5B (perspective view), the patterned sunglasses 35 can be comprised using the polarizing member of this Embodiment. The spectacle lens 30 used for the patterned sunglasses 35 is the spectacle lens shown in FIG. 5A, or in the polarizing member 1 having the slightly adhesive layer 12 as shown in FIG. The patterned sunglasses 1 can be configured by joining the polarizing member 1 of the form through the slightly adhesive layer 12. Alternatively, the patterned sunglasses 35 can be configured using a spectacle lens made of a single polarizing member.

  In the spectacle lens 30 shown in FIG. 5A and the patterned sunglasses 35 shown in FIG. 5B, the pattern 5 can be visually recognized when observed from the light incident side C (facing person side with respect to the wearer of the sunglasses). When viewed from the opposite side D (the eyepiece side of the wearer of the sunglasses), the pattern 5 is difficult to be recognized. Therefore, the light incident side is not disturbed without obstructing the view of the wearer of the patterned sunglasses 35 of FIG. 5B. The pattern can be visually recognized. And in this Embodiment, the formation area of the pattern 5 is not limited only to the edge part of a spectacle lens like the past, but the formation area, size, etc. of the pattern 5 are fashion property, advertisement property, design property, use use It is possible to design freely from such a viewpoint.

  FIG. 6 is a cross-sectional view showing the manufacturing process of the polarizing member of the present embodiment. In the process of FIG. 6A, the pattern 5 is formed by, for example, a laser on the light-reflecting polarizing portion 2c of the light-reflecting polarizing plate 2 (a fine uneven surface including a metal wire). FIG. 6B is a partially enlarged cross-sectional view in which a part of FIG. 6A is enlarged. As shown in FIG. 6B, the light-reflective polarizing plate 2 is formed by a laminated structure of a holding base material 16 formed of a TAC film or the like and a resin base material 17 having a fine uneven surface provided with a metal wire on the surface. Is done. The holding base material 16 and the resin substrate 17 are joined by an adhesive layer. As shown in FIG. 6B, the portion of the pattern 5 is irradiated with laser to remove the metal wire (metal layer) 18. At this time, the pattern 5 is formed in a reverse pattern with respect to the visually recognized pattern 5 as shown in FIGS. 7A, 7B, and 7C, for example. FIG. 7A shows a pattern in which the outline is surrounded by a laser, FIG. 7B shows a pattern in which a character portion is solid processed by a laser, and FIG. 7C shows a pattern in which other portions are laser processed while leaving the character portion. The blacked out area is the area where the light reflection function is lost by the laser.

  Subsequently, in the step of FIG. 6C, the light-reflecting polarizing plate 2 and the light-absorbing polarizing plate 3 are placed with the light-reflecting polarizing portion 2c of the light-reflecting polarizing plate 2 facing the light-absorbing polarizing plate 3. Bonding is performed via a bonding layer 7 made of an adhesive or a pressure-sensitive adhesive.

  Subsequently, in the process of FIG. 6D, the slightly adhesive film 10 is bonded to the light-absorbing polarizing plate 3 through the bonding layer 13.

  When the pattern 5 is observed from the surface (light incident surface) 2a side of the light-reflective polarizing plate 2 shown in FIG. 6D, the reverse patterns of FIGS. 7A, 7B, and 7C are reversed and shown in FIGS. 7D, 7E, and 7F. As shown, the pattern of the character part “ABC” can be visually recognized.

  In the polarizing member 15 shown in FIG. 2, the light-absorbing polarizing plate 23 shown in FIG. 2 is bonded to the light-reflecting polarizing plate 2 via the bonding layer 7 after FIG. 6A.

  In the present embodiment, the polarizing members 1 and 15 shown in FIGS. 1 and 2 can be manufactured and sold, or the light reflective polarizing plate 2 having the pattern 5 can be manufactured and sold independently. Further, the polarizing members 1 and 15 of the present embodiment can be applied as the spectacle lens 30 shown in FIG. 5A or the patterned sunglasses 35 shown in FIG. 5B. It is not limited to.

  Moreover, after light-reflective polarizing plate before patterning is heat-pressed with, for example, holding substrate (PC, etc.) / Light-absorbing polarizing plate / holding substrate (PC, etc.) and molded into a lens shape. The pattern may be formed by laser processing directly from the outside of the light reflective polarizing plate. At this time, a metal wire (aluminum or the like) on the wire grid surface of the light reflective polarizing plate can be sublimated by laser processing to form a pattern. In such a configuration, the pattern reversed with respect to the light-reflecting polarizing plate does not need to be laser-processed before being bonded to the light-absorbing polarizing plate. Laser processing is possible.

  The present invention will be specifically described by the following examples, which are not intended to limit the scope of the present invention.

[Example 1]
Characters (patterns) were patterned on WGF (Wire Grid Reflective Polarizing Film) manufactured by Asahi Kasei E-Materials Co., Ltd. from the aluminum grid surface side using Green Laser Marker MD-S9900A manufactured by Keyence Co., Ltd. The character thickness was about 0.3 mm.

  In addition, the characters were reversed left and right so that the characters could be recognized from the light incident side. Next, an absorptive polarizing film (Sumikaran (registered trademark) manufactured by Sumitomo Chemical Co., Ltd.) was bonded to the aluminum grid surface side of the WGF with a pattern via an adhesive.

  Next, a self-adsorbing slightly adhesive layer (Fix Copian Co., Ltd. Fix Film (registered trademark) HG3) was bonded to the absorptive polarizing film. Next, a polarizing member having a pattern having a wire grid reflective polarizing film and an absorbing polarizing film was bonded to a sunglasses lens through a self-adsorbing slightly adhesive layer.

[Example 2]
In Example 2, the process was performed in the same manner as in Example 1 until the characters (patterns) were patterned in the left-right reversed pattern.

A laminate of (PC / PVA / PC) was prepared as a light-absorbing polarizing plate. Next, a light absorptive polarizing plate was bonded to the aluminum grid surface side of WGF via an adhesive, formed into a lens curved surface for sunglasses by hot press molding, and then trimmed into a lens shape.
Subsequently, each lens produced in Example 1 and Example 2 was subjected to surface treatment for antireflection and hard coat treatment.

  The lenses produced in Example 1 and Example 2 were used for spectacles, and in the state where the spectacles were actually worn, the character (pattern) from the wearer's side and the character (from the person facing the wearer) The visibility of the pattern) was evaluated. As a result, it was found that the characters (patterns) could not be visually recognized from the wearer side, while the characters (patterns) emerged from the face-to-face side due to the light reflection state, and the characters could be visually recognized.

  Further, the total light transmittance of the wire grid reflection type polarizing film and the absorption type polarizing film is about 40% (80% for polarized light transmission), and if the pattern is formed only with the light reflective polarizing plate, The transmittance is about 90% in terms of total light transmittance. Since the total light transmittance in the part other than the pattern, that is, the part where the polarized light remains (light reflective polarizing part) is 40%, the transmittance difference between the pattern part and the part other than the pattern is about 50%. It becomes. When the light-reflecting polarizing plate and the light-absorbing polarizing plate are overlapped for calculation, the polarizing transmittance of the light-reflecting polarizing plate (part other than the pattern; light-reflecting polarizing portion) 80% × light-absorbing polarizing plate The total light transmittance in a portion other than the pattern is 32%, which is 1/2 of 64%. On the other hand, in the pattern portion, the total light transmittance of the light-reflecting polarizing plate is 90% (transparent) × the polarized light transmission of the light-absorbing polarizing plate is 80%, and the total light transmittance in the pattern portion is 72%. It becomes 36% of 1/2. Thus, it was found that the difference in transmittance between the pattern portion and the portion other than the pattern was only about 4%.

  The polarizing member of the present invention does not obstruct the field of view from the back surface side (the side opposite to the light incident side) of the polarizing member, and on the other hand, makes it possible to visually recognize patterns such as letters and figures from the light incident side. . Therefore, the polarizing member of the present invention can be applied to spectacle lenses, patterned sunglasses, and the like that impart fashionability, advertisingity, and the like.

DESCRIPTION OF SYMBOLS 1, 15 Polarizing member 2 Light reflecting polarizing plate 2c Light reflecting polarizing part 3, 23 Light absorbing polarizing plate 5 Pattern 7, 13 Bonding layer 8, 9 Polarization transmission axis 10 Slight adhesive film 30 Eyeglass lens 31 Molded lens 35 Sunglasses with a pattern

Claims (12)

In order from the light incident side and the light reflective polarizing plate having a pattern, and a light absorbing polarizing plate, Ri said light greens arranged in a direction that passes through the layer,
The pattern is formed by eliminating the light reflecting function of the light reflective polarizing plate, and the polarization transmission axis of the light reflective polarizing plate matches the polarization transmission axis of the light absorbing polarizing plate. polarizing member characterized that you have been arranged so.   The polarizing member according to claim 1, wherein the pattern is provided on the same surface side as the light-reflecting polarizing portion of the light-reflecting polarizing plate.   The polarizing member according to claim 2, wherein the pattern and the light-reflecting polarizing portion are provided on a surface of the light-reflecting polarizing plate facing the light-absorbing polarizing plate. The difference between the transmittance of the light transmitted through the pattern portion and the transmittance of the light transmitted through the portion having the light reflecting function of the light reflective polarizing plate is 10% or less. 4. The polarizing member according to any one of 3 to 3 . A portion of the pattern, polarization according to any one of claims 1 to 4, wherein the difference in the reflectance of light between the portion having a light reflecting function of the light reflective polarizing plate is 10% or more Element. The light reflective polarizing plate, the polarizing member according to any one of claims 1 to 5, characterized in that a wire grid polarizer. The light reflective polarizing plate, the polarizing member according to any one of claims 1 to 5, characterized in that a multilayer birefringent polymer. The polarization member, the polarization member according to any one of claims 1 to 7, characterized in that it is a film. Polarization member according to any one of claims 1 to 8, characterized in that it has a viscosity adhesive layer on one surface of the polarizing member. Before Kineba adhesive layer, the polarization member according to claim 9, characterized in that provided on the opposite side to the light incident surface of the polarization member. It claims 1 to spectacle lens characterized by being imparted a curved surface by the polarizing member according to any one of 10 to thermoforming. With patterns sunglasses characterized by having the polarization member according to any of claims 1 to 10.

Images