Automatic door

Abstract

To provide an automatic door that can express a specific aesthetic property in an open state.SOLUTION: An automatic door according to an embodiment of the present invention is configured to include a door, a drive unit to open / close the door, and a fix immovably fixed, and to express a specific aesthetic property when the door is in an open state. In one embodiment, the door has a first polarization plate and the fix has a second polarization plate and a retardation plate. When the door is in an open state, the retardation plate is positioned between the first polarization plate and the second polarization plate; the first polarization plate and the second polarization plate are arranged such that the absorption axes of a first polarizer contained in the first polarization plate and a second polarizer contained in the second polarization plate are substantially orthogonal or parallel to each other; and the retardation plate is arranged such that an angle between the slow axis of the retardation plate and the absorption axis of the first polarizer is 40° to 50° or 130° to 140°.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an automatic door.

Background Art

[0002] Currently, automatic doors are widely used in many buildings and facilities within the buildings (e.g., stores, toilets). Continuous improvements are being made regarding various performances and problems of automatic doors.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The main object of the present invention is to provide an automatic door that can exhibit a predetermined design in an open state.

Means for Solving the Problems

[0005] The automatic door according to an embodiment of the present invention includes a door, a driving device for opening and closing the door, and a fixture fixedly fixed. In the open state of the door, it is configured to exhibit a predetermined design. In one embodiment, the door has a first polarizing plate, and the fixture has a second polarizing plate and a retardation plate. In the open state of the door, the retardation plate is disposed between the first polarizing plate and the second polarizing plate; the first polarizing plate and the second polarizing plate are arranged such that the absorption axis of the first polarizer included in the first polarizing plate and the absorption axis of the second polarizer included in the second polarizing plate are substantially orthogonal or parallel; the retardation plate is arranged such that the angle formed by the slow axis of the retardation plate and the absorption axis of the first polarizer is 40° - 50° or 130° - 140°. In one embodiment, the door has a left door that opens to the left and a right door that opens to the right; the fix has a left fix fixed to the left and a right fix fixed to the right; and in the open state of the door, the design that appears at the position of the left door and the left fix is ​​different from the design that appears at the position of the right door and the right fix. In this case, the Re(550) of the phase difference plate included in either the left fix or the right fix is ​​220nm to 320nm, and the Re(550) of the phase difference plate included in the other of the left fix or the right fix is ​​1200nm to 1600nm. [Effects of the Invention]

[0006] According to embodiments of the present invention, an automatic door can be realized that can display a predetermined design when open by attaching polarizing plates and / or phase difference plates of a predetermined configuration to the door and the fixed part, respectively, in a predetermined positional relationship. [Brief explanation of the drawing]

[0007] [Figure 1] This is a front view of an automatic door in the closed state according to one embodiment of the present invention. [Figure 2] Figure 1 is a front view of the automatic door with the transom cover open. [Figure 3] This is a front view of the automatic door in the open position shown in Figure 1. [Figure 4] Figure 1 is a schematic cross-sectional view illustrating the state of the door and fixture when viewed from above in the closed and open states of the automatic door. [Modes for carrying out the invention]

[0008] Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to these embodiments. Note that the drawings are schematic representations for clarity, and the proportions of length, width, thickness, etc., shown in the drawings differ from those of actual objects.

[0009] A. Overall configuration of automatic doors An automatic door according to an embodiment of the present invention comprises a door, a drive device for opening and closing the door, and a fixed, immovably mounted fixture. Any suitable configuration can be adopted for the automatic door. A typical example is briefly described below. For matters not described herein, configurations well known in the industry may be adopted.

[0010] Figure 1 is a front view of an automatic door in the closed state according to one embodiment of the present invention; Figure 2 is a front view of the automatic door of Figure 1 with the transom cover open; Figure 3 is a front view of the automatic door of Figure 1 in the open state; and Figure 4 is a schematic cross-sectional view illustrating the state of the door and fixtures when viewed from above in the closed and open states of the automatic door of Figure 1. Although the illustrated example shows a double-sliding configuration in which a pair of left and right doors open and close, it will be obvious to those skilled in the art that the automatic door according to an embodiment of the present invention may also be a single-sliding configuration in which only one door opens and closes. The illustrated automatic door 100 comprises one left and one right sliding door 10a, 10b, a drive device 20 for driving the doors 10a, 10b, and one left and one right fixed fixture 30a, 30b which are fixed fixtures. In the automatic door 100, typically, guide rails 13 are provided at the bottom of the doors 10a and 10b, which guide the anti-sway devices 11a and 11b attached to the doors 10a and 10b. In practical terms, the automatic door 100 may further include a transom 40 provided at the top of the doors 10a and 10b and the fixeds 30a and 30b, an activation sensor 50 attached to the transom 40 for detecting nearby objects such as passersby on one side in the thickness direction of the doors 10a and 10b, an activation sensor (not shown) attached to the transom 40 for detecting nearby objects such as passersby on the other side in the thickness direction of the doors 10a and 10b, and an auxiliary photoelectric sensor (not shown) attached to the fixeds 30a and 30b for detecting objects such as passersby passing through the openings of the doors 10a and 10b. Doors 10a and 10b are positioned offset from the fixes 30a and 30b in the thickness direction of the door, and slide in the width direction (left-right direction) between a position that opens the opening on the side of the fixes 30a and 30b (between the two fixes 30a and 30b in the illustrated example) and a position that closes the said opening. In the illustrated example, the left door 10a slides open to the left, and the right door 10b slides open to the right.

[0011] The drive unit 20 is typically located inside the transom 40. The transom 40 is equipped with an openable and closable cover 40a. When the cover 40a is opened, the drive unit 20 is exposed as shown in Figure 2.

[0012] The drive unit 20 typically includes a hanger rail 21, a door roller 22a that travels on the hanger rail 21, a timing belt 23, a drive pulley 24 and a driven pulley 25 on which the timing belt 23 is attached, an engine 27 that drives the drive pulley 24, a controller 29 that controls the operation of the engine 27, and a power switch (not shown) for switching the power supply state to the drive unit 20 from outside the drive unit 20. The door roller 22a is integrally formed with the door hanger 22, and in the illustrated example, two door hangers 22 are configured to suspend one door 10a or 10b. The upper part of the door roller 22a is connected to the timing belt 23.

[0013] When the automatic door 100 detects a passerby using the activation sensor 50, it sends an activation signal to the door controller 29. This activation signal causes the door controller 29 to drive the engine 27, which in turn rotates the timing belt 23 via the drive pulley 24 and the driven pulley 25. The timing belt 23 pulls the doors 10a and 10b in a relative direction via the belt grip 28 (ultimately the door hanger 22) connected to the timing belt, causing the door rollers 22a to roll on the hanger rail 21, thereby opening and closing the doors 10a and 10b. The movement of the doors 10a and 10b in the opening direction is restricted by the stopper 26.

[0014] In embodiments of the present invention, the automatic door is configured such that a predetermined design is displayed when the door is open. Specific representative examples of the configuration will be described below with reference to Figures 3 and 4. Doors 10a and 10b typically have first polarizing plates 61a and 61b, respectively. Fixes 30a and 30b typically have second polarizing plates 62a and 62b and phase difference plates 70a and 70b, respectively. Typically, the first polarizing plates 61a and 61b are bonded to doors 10a and 10b via any suitable adhesive, and the second polarizing plates 62a and 62b are bonded to fixes 30a and 30b via any suitable adhesive. The phase difference plates 70a and 70b are typically bonded to the second polarizing plates 62a and 62b via any suitable adhesive. The automatic door 100 is configured such that, when the doors 10a and 10b are open (i.e., when the doors 10a and 10b are in overlapping position with the fixtures 30a and 30b), the phase difference plate 70a is positioned between the first polarizing plate 61a and the second polarizing plate 62a, and the phase difference plate 70b is positioned between the first polarizing plate 61b and the second polarizing plate 62b. Insofar as it is configured in this way, the first polarizing plates 61a and 61b may be provided on the side of the fixtures 30a and 30b of the doors 10a and 10b, or on the opposite side of the fixtures 30a and 30b as shown in the illustrated example. Similarly, the second polarizing plates 62a and 62b and the phase difference plates 70a and 70b may be provided on the side of the fixtures 30a and 30b of the doors 10a and 10b as shown in the illustrated example, or on the opposite side of the doors 10a and 10b. The first polarizers 61a and 61b typically include a first polarizer (not shown), and the second polarizers 62a and 62b typically include a second polarizer (not shown). The first polarizers 61a and 62a are arranged such that the absorption axes of the first polarizer and the second polarizer are substantially orthogonal or parallel. Typically, the first polarizers 61a and 61b are attached to doors 10a and 10b such that the absorption axis of the first polarizer is substantially parallel to the horizontal or vertical direction, and the second polarizers 62a and 62b are attached to fixtures 30a and 30b such that the absorption axis of the second polarizer is substantially parallel to the horizontal or vertical direction.Such a configuration is easy to manufacture. The phase difference plates 70a and 70b are typically arranged such that the angle between their slow phase axis and the absorption axis of the first polarizer is 40° to 50° or 130° to 140°. In this case, the angle between the slow phase axis of the phase difference plate and the absorption axis of the second polarizer is also 40° to 50° or 130° to 140°. The angle is preferably 42° to 48° or 132° to 138°, more preferably 44° to 46° or 134° to 136°, and even more preferably about 45° or about 135°. With such a configuration, a predetermined design can be made to appear when the doors 10a and 10b are open by adjusting the optical properties of the phase difference plates (typically, refractive index ellipsoid and in-plane phase difference). In this specification, the terms "substantially orthogonal" and "approximately orthogonal" include the case where the angle between the two directions is 90°±10°, preferably 90°±5°, and more preferably 90°±3°. The terms "substantially parallel" and "approximately parallel" include the case where the angle between the two directions is 0°±10°, preferably 0°±5°, and more preferably 0°±3°. Furthermore, when "orthogonal" or "parallel" is used in this specification, it may include substantially orthogonal or substantially parallel conditions. Also, when angles are referred to in this specification, both clockwise and counterclockwise directions with respect to the reference direction are included.

[0015] The mechanism by which the design manifests will be explained. Referring to Figures 3 and 4, the case where the manifested design is a "cat" will be explained. In the illustrated example, the first polarizer 61a and the second polarizer 62a are arranged such that the absorption axis of the first polarizer and the absorption axis of the second polarizer are substantially parallel. More specifically, the first polarizer 61a and the second polarizer 62a are arranged such that the absorption axis of the first polarizer and the absorption axis of the second polarizer are both substantially parallel to the horizontal direction. In addition, in the illustrated example, the phase difference plate 70a is cut into the shape of a cat facing to the right and bonded to the second polarizer 62a, and the phase difference plate 70b is cut into the shape of a cat facing to the left and bonded to the second polarizer 62b. Furthermore, the phase difference plates 70a and 70b are arranged such that the angle between their slow phase axis and the absorption axis of the first polarizer and the absorption axis of the second polarizer is approximately 45°. In the illustrated example, the in-plane phase difference Re(550) of the phase difference plate 70a is, for example, 220nm to 320nm, preferably 250nm to 290nm, and more preferably about 270nm, and the in-plane phase difference Re(550) of the phase difference plate 70b is, for example, 1200nm to 1600nm, preferably 1300nm to 1500nm, and more preferably about 1400nm. In the closed state, the door and the fix do not overlap, so the first polarizing plate and the second polarizing plate do not overlap, and as a result, no coloring by the phase difference plate occurs, and the design (cat in the illustrated example) does not appear. On the other hand, when the door is in the open state, the first polarizing plate and the second polarizing plate overlap. Here, the Re(550) of the phase difference plate 70a is more preferably set to approximately 270 nm (effectively configured as a λ / 2 plate), so that when viewed from either the door side or the fixed side of the automatic door, the polarization direction of the polarized light incident on and passing through the polarizer is shifted by 90° by the phase difference plate 70a. As a result, light that has passed through the phase difference plate 70a cannot pass through the polarizer on the opposite side, so the portion corresponding to the phase difference plate 70a becomes black. Consequently, a black cat appears in the area where the left door 10a and the left fixed plate 30a overlap.On the other hand, the Re(550) of the phase difference plate 70b is more preferably set to approximately 1400 nm, and as a result, the portion corresponding to the phase difference plate 70b appears yellow when viewed from either the door side or the fixed side of the automatic door. Therefore, a yellow cat appears in the portion where the right door 10b and the right fixed 30b overlap. In this specification, "Re(λ)" is the in-plane phase difference of the film measured with light of wavelength λ nm at 23°C. Therefore, "Re(450)" is the in-plane phase difference of the film measured with light of wavelength 450 nm at 23°C, and "Re(550)" is the in-plane phase difference of the film measured with light of wavelength 550 nm at 23°C. Re(λ) can be calculated by the formula: Re(λ)=(nx-ny)×d, where d (nm) is the thickness of the film. Here, "nx" is the refractive index in the direction where the refractive index is maximized in the plane (i.e., in the direction of the slow phase axis), and "ny" is the refractive index in the direction perpendicular to the slow phase axis in the plane (i.e., in the direction of the fast phase axis).

[0016] When the doors are open, the designs that appear at the positions of the left door 10a and left fix 30a and the designs that appear at the positions of the right door 10b and right fix 30b may be the same or different. In the illustrated example, a black cat appears at the positions of the left door 10a and left fix 30a, and a yellow cat appears at the positions of the right door 10b and right fix 30b. However, the positions of the black cat and the yellow cat may be reversed, both may be black cats, or both may be yellow cats.

[0017] By adjusting the configuration, shape, and optical properties (typically, refractive index ellipsoid, in-plane retardation, etc.) of the retardation plates 70a and 70b, a design according to the purpose can be expressed. Specific examples of the design include animals other than cats, flowers or plants, buildings, landscapes, characters, and geometric patterns. These designs can be realized by combining retardation plates having different optical properties. For example, when expressing a multicolor mosaic pattern, a retardation plate having Re(550) that expresses a desired color may be arranged in a mosaic pattern. Typically, by combining and adjusting Re(550) of the retardation plate and the angle formed by the absorption axis of the retardation plate and the absorption axis of the polarizer, a desired color can be expressed. For example, in a configuration where the absorption axes of the first polarizer and the second polarizer are arranged to be orthogonal, and the angle formed by the slow axis of the retardation plate and these absorption axes is 45°, to express blue, a retardation plate having Re(550) of, for example, 580 nm to 720 nm may be used, to express green, a retardation plate having Re(550) of, for example, 725 nm to 860 nm may be used, and to express red, a retardation plate having Re(550) of, for example, 520 nm to 540 nm may be used. By adjusting Re(550) of the retardation plate and / or the angle formed by the slow axis of the retardation plate and the absorption axes of the first polarizer and the second polarizer, an intermediate color can also be expressed. By appropriately combining such retardation plates, not only a mosaic pattern (geometric pattern) but also flowers or plants, buildings, landscapes, etc. can be configured.

[0018] Hereinafter, the first polarizer and the second polarizer used for the automatic door, and the retardation plate will be specifically described. The first polarizer and the second polarizer will be described together as the polarizer. When it is necessary to distinguish between the first polarizer and the second polarizer, "first" and "second" will be specified.

[0019] B. Polarizer As the polarizer, any appropriate configuration can be adopted. The polarizer typically has a polarizer and a protective film disposed on one or both sides of the polarizer.

[0020] As the polarizer, any appropriate polarizer can be adopted. The resin film forming the polarizer may be a single-layer resin film or may be produced using a laminate of two or more layers.

[0021] Specific examples of polarizers composed of a single-layer resin film include hydrophilic polymer films such as polyvinyl alcohol (PVA)-based resin films, partially formalized PVA-based resin films, and ethylene-vinyl acetate copolymer-based partially saponified films, which are subjected to dyeing treatment and stretching treatment with dichroic substances such as iodine and dichroic dyes, and polyene-based oriented films such as dehydrated products of PVA and dehydrochlorinated products of polyvinyl chloride. Preferably, a polarizer obtained by dyeing a PVA-based resin film with iodine and uniaxially stretching it is used because of its excellent optical properties.

[0022] The dyeing with iodine is performed, for example, by immersing the PVA-based resin film in an iodine aqueous solution. The stretching ratio of the uniaxial stretching is preferably 3 to 7 times. The stretching may be performed after the dyeing treatment, may be performed while dyeing, or may be performed after stretching and then dyeing. If necessary, the PVA-based resin film is subjected to swelling treatment, crosslinking treatment, washing treatment, drying treatment, etc. For example, by immersing the PVA-based resin film in water and washing it before dyeing, not only can the dirt on the surface of the PVA-based resin film and the blocking inhibitor be washed away, but also the PVA-based resin film can be swollen to prevent uneven dyeing.

[0023] Specific examples of polarizers obtained using a laminate include a laminate of a resin substrate and a PVA-based resin layer (PVA-based resin film) laminated on the resin substrate, or a polarizer obtained using a laminate of a resin substrate and a PVA-based resin layer coated on the resin substrate. A polarizer obtained using a laminate of a resin substrate and a PVA-based resin layer coated on the resin substrate can be produced, for example, by applying a PVA-based resin solution to a resin substrate, drying it to form a PVA-based resin layer on the resin substrate, and obtaining a laminate of the resin substrate and the PVA-based resin layer; or by stretching and dyeing the laminate to make the PVA-based resin layer a polarizer. In this embodiment, stretching typically includes immersing the laminate in an aqueous boric acid solution and stretching it. Furthermore, stretching may, if necessary, further include air-stretching the laminate at a high temperature (e.g., 95°C or higher) before stretching in the aqueous boric acid solution. The resulting resin substrate / polarizer laminate may be used as is (i.e., the resin substrate may be used as a protective layer for the polarizer), or the resin substrate may be peeled off from the resin substrate / polarizer laminate, and any appropriate protective layer may be laminated onto the peeled surface according to the purpose. Details of such a polarizer manufacturing method are described, for example, in Japanese Patent Application Publication No. 2012-73580 and Japanese Patent No. 6470455. The descriptions in these patent documents are incorporated herein by reference.

[0024] The protective film is composed of any suitable film that can be used as a protective film for a polarizer. Specific examples of materials that make up the main component of the film include cellulosic resins such as triacetylcellulose (TAC), and transparent resins such as polyester, polyvinyl alcohol, polycarbonate, polyamide, polyimide, polyethersulfone, polysulfone, polystyrene, polynorbornene, polyolefin, cyclic olefin, (meth)acrylic, and acetate. Thermosetting resins or UV-curing resins such as (meth)acrylic, urethane, (meth)acrylic urethane, epoxy, and silicone can also be used. In addition, glassy polymers such as siloxane polymers can also be used. Polymer films described in Japanese Patent Application Publication No. 2001-343529 (WO01 / 37007) can also be used. As materials for this film, for example, a resin composition containing a thermoplastic resin having substituted or unsubstituted imide groups in its side chains and a thermoplastic resin having substituted or unsubstituted phenyl groups and nitrile groups in its side chains can be used. Examples include a resin composition having an alternating copolymer of isobutene and N-methylmaleimide and an acrylonitrile-styrene copolymer. The polymer film may be, for example, an extruded product of the above resin composition. Preferably, TAC, (meth)acrylic resins, and cyclic olefin resins can be used.

[0025] C. Retardation plate As described above, the phase difference plate has any appropriate Re(550) depending on the design (substantially, color) to be expressed. In the configuration according to the embodiment of the present invention, as described above, the Re(550) that can produce black is, for example, 220nm to 320nm, preferably 250nm to 290nm, and more preferably about 270nm; the Re(550) that can produce yellow is, for example, 1200nm to 1600nm, preferably 1300nm to 1500nm, and more preferably 1400nm. Furthermore, as described above, a desired color can be produced by adjusting the combination of the Re(550) of the phase difference plate and the angle between the absorption axis of the phase difference plate and the absorption axis of the polarizer. For example, in a configuration where the absorption axis of the first polarizer and the absorption axis of the second polarizer are arranged orthogonally, and the angle between the slow axis of the phase difference plate and these absorption axes is 45°, the Re(550) that can produce blue is, for example, 580nm to 720nm, preferably 580nm to 680nm, and more preferably about 580nm; the Re(550) that can produce green is, for example, 725nm to 860nm, preferably 730nm to 840nm, and more preferably about 800nm; and the Re(550) that can produce red is, for example, 520nm to 540nm, preferably 525nm to 535nm, and more preferably about 530nm. In such a configuration, intermediate colors can be produced by setting Re(550) to be outside the above range. By adjusting the materials and manufacturing conditions (typically the stretching conditions) that constitute the phase difference plate, and / or by stacking multiple phase difference plates with their respective slow phase axis directions aligned, the desired Re(550) can be achieved.

[0026] The wavelength dispersion characteristic Re(450) / Re(550) of the phase difference plate is preferably 0.9 or higher, and more preferably 0.95 to 1.2. When the Re(450) / Re(550) of the phase difference plate is within this range, a predetermined color can be produced with better color tone.

[0027] As described above, the phase difference plate has an in-plane phase difference, and therefore the relationship nx > ny holds. The phase difference plate exhibits any suitable refractive index ellipsoid as long as the relationship nx > ny holds. Preferably, the refractive index ellipsoid of the phase difference plate exhibits the relationship nx > ny ≥ nz.

[0028] The phase difference plate is composed of a resin film (typically a stretched resin film) that can satisfy the above-mentioned characteristics. Typical examples of resins used to form the phase difference plate include polyester resins (e.g., polyethylene terephthalate, polyethylene naphthalate), polycarbonate resins, polyether resins (e.g., polyetheretherketone), polystyrene resins, and cyclic olefin resins. In particular, polyester resins and polycarbonate resins have large intrinsic birefringences, and large in-plane phase differences can be obtained relatively easily even with low stretching ratios and thin thicknesses, making them suitable for use.

[0029] A phase difference plate can be obtained by stretching the above-mentioned resin film. Any suitable stretching method and conditions (e.g., stretching temperature, stretching ratio, stretching direction) can be employed depending on the desired in-plane phase difference (and ultimately, the desired color).

[0030] The phase difference plate may be a single resin film (stretched film) or a laminated film made by laminating multiple resin films (stretched films). A single film has the advantage of being easy to manufacture and low-cost. A laminated film has the advantage of being easy to adjust the in-plane phase difference.

[0031] The thickness of the phase difference plate (or the total thickness in the case of a laminated film) can be appropriately set according to the desired in-plane phase difference, constituent materials, etc.

[0032] The phase difference plate may use a commercially available phase difference film, or a commercially available phase difference film that has undergone secondary processing (e.g., stretching) may be used, or these may be laminated together. [Explanation of symbols]

[0033] 10a Left door 10b Right door 20 Drive unit 30a Left Fix 30b Right Fix 40 No object 50 Start Sensor 61a First polarizing plate 61b First polarizer 62a Second polarizing plate 62b Second polarizer 70a retardation plate 70b Retardation plate 100 Automatic Doors

Claims

1. An automatic door comprising a door, a drive mechanism for opening and closing the door, and a fixed that is permanently fixed, The automatic door is configured to display a predetermined design when the door is in the open position. The door has a first polarizing plate, The fix has a second polarizer and a phase difference plate, Only this fixed unit has a phase difference plate. The door has a left door that opens to the left and a right door that opens to the right. The fix has a left fix that is fixed immovably on the left side and a right fix that is fixed immovably on the right side. The phase difference plate is arranged such that the angle between the slow axis of the phase difference plate and the absorption axis of the first polarizer contained in the first polarizer plate and the absorption axis of the second polarizer contained in the second polarizer plate is 40° to 50° or 130° to 140°. In a configuration in which the first polarizer and the second polarizer are arranged such that the absorption axis of the first polarizer and the absorption axis of the second polarizer are substantially parallel, the predetermined design exhibits a yellow color when the Re(550) of the phase difference plate included in either the left fix or the right fix is ​​1200 nm to 1600 nm, or in a configuration in which the first polarizer and the second polarizer are arranged such that the absorption axis of the first polarizer and the absorption axis of the second polarizer are substantially orthogonal, the predetermined design exhibits a blue color when the Re(550) of the phase difference plate included in either the left fix or the right fix is ​​580 nm to 720 nm, the predetermined design exhibits a green color when it is 725 nm to 860 nm, and the predetermined design exhibits a red color when it is 520 nm to 540 nm, including at least one of these. The wavelength dispersion characteristic Re(450) / Re(550) of the phase difference plate is 0.95 to 1.

2. Automatic door.

2. The automatic door according to claim 1, wherein, in the open state of the door, the phase difference plate is positioned between the first polarizing plate and the second polarizing plate.

3. The automatic door according to claim 2, wherein, when the door is open, the design that appears at the position of the left door and the left fixed is different from the design that appears at the position of the right door and the right fixed.

4. The automatic door according to claim 3, wherein the Re(550) of the phase difference plate included in either the left fix or the right fix is ​​220 nm to 320 nm, and the Re(550) of the phase difference plate included in the other of the left fix or the right fix is ​​1200 nm to 1600 nm.

Images