JP2012220853A - Retardation film for glasses, optical sheet for 3d glasses, and 3d glasses - Google Patents

Retardation film for glasses, optical sheet for 3d glasses, and 3d glasses Download PDF

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JP2012220853A
JP2012220853A JP2011088695A JP2011088695A JP2012220853A JP 2012220853 A JP2012220853 A JP 2012220853A JP 2011088695 A JP2011088695 A JP 2011088695A JP 2011088695 A JP2011088695 A JP 2011088695A JP 2012220853 A JP2012220853 A JP 2012220853A
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glasses
lens
retardation film
axis direction
optical sheet
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Motohiko Okabe
元彦 岡部
Yoshito Nishino
嘉人 西野
Akira Furuta
旭 古田
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Keiwa Inc
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Keiwa Inc
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Priority to CN201210105538.XA priority patent/CN102736162B/en
Priority to TW101112945A priority patent/TWI452325B/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/12—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2213/00—Details of stereoscopic systems
    • H04N2213/008—Aspects relating to glasses for viewing stereoscopic images

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Polarising Elements (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Eyeglasses (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a retardation film for glasses providing desired refractive indices even when being formed into a curved surface shape, an optical sheet for 3D glasses, and 3D glasses.SOLUTION: The retardation film for glasses according to the present invention includes, as a primary polymer, cyclo olefin copolymer or cyclo olefin polymer and has birefringence in the plane direction. Even when a lens is formed into a three-dimensionally curved shape, the retardation film for glasses is used for a lens of the 3D glasses, so that a phase difference of the retardation film for the glasses due to heat and stress is reduced, a change in birefringence of the retardation film for the glasses scarcely occurs, and desired light can be transmitted to the lens.

Description

本発明は、メガネ用位相差フィルム、これを用いた３Ｄメガネ用光学シート、及びこれを用いた３Ｄメガネに関するものである。   The present invention relates to a retardation film for glasses, an optical sheet for 3D glasses using the same, and 3D glasses using the same.

近年、３Ｄメガネは、３Ｄ（３次元）立体画像表示装置から出射された映像光を視認する際に視認者が装着して用いられる。この３Ｄ立体画像表示装置は、視差を有する右目用映像光線と左目用映像光線とを出射し、右目用レンズと左目用レンズとで光学性能の異なる３Ｄメガネを通して視認者が視認することにより、視認者が３Ｄ立体画像を認識できるよう設けられている（例えば特開２０１１−４８２３６号公報参照）。   In recent years, 3D glasses are used by a viewer when viewing video light emitted from a 3D (three-dimensional) stereoscopic image display device. This 3D stereoscopic image display device emits a right-eye video beam and a left-eye video beam having parallax, and the viewer visually recognizes through the 3D glasses having different optical performance between the right-eye lens and the left-eye lens. It is provided so that a person can recognize a 3D stereoscopic image (for example, refer to JP 2011-48236 A).

具体的には、３Ｄ立体画像表示装置から出射される右目用映像光線と左目用映像光線とは、回転方向の異なる円偏光として出射されている。そして、３Ｄメガネは、３Ｄ立体画像表示装置側に１／４波長板を有している。そして、この１／４波長板によって円偏光である右目用映像光線と左目用映像光線とが直線偏光に変換されて透過する。ここで、右目用映像光線と左目用映像光線とは回転方向の異なる円偏光であるため、１／４波長板の進相軸に対して、右回転の映像光線が右回転側に４５°、左回転の映像光線が左回転側に４５°傾斜した方向の直線偏光に変換される。   Specifically, the right-eye video light beam and the left-eye video light beam emitted from the 3D stereoscopic image display device are emitted as circularly polarized light having different rotation directions. The 3D glasses have a ¼ wavelength plate on the 3D stereoscopic image display device side. The quarter-wave plate converts the circularly polarized right-eye image light beam and left-eye image light beam into linearly polarized light and transmits it. Here, since the right eye image light beam and the left eye image light beam are circularly polarized light having different rotation directions, the right rotation image light beam is 45 ° to the right rotation side with respect to the fast axis of the quarter wave plate. The left-rotated image light beam is converted into linearly polarized light in a direction inclined 45 ° to the left-rotation side.

また、３Ｄメガネは、視認者側に偏光板を有している。この偏光板は、各レンズにおいて、１／４波長板の進相軸方向に対して透過軸方向が、一方のレンズでは一方向（例えば右回転方向）に傾斜し、他方のレンズでは他方向（左回転方向）に傾斜して配設されている。このため、上記のように１／４波長板で直線偏光に変換された直線偏光のうち、一方のレンズでは、左回転の映像光線が変換された直線偏光は通過せずに右回転の映像光線が変換された直線偏光のみが通過する。一方、他方のレンズでは、右回転の映像光線が変換された直線偏光は通過せずに左回転の映像光線が変換された直線偏光のみが通過することになる。これにより、装着者の右目と左目とで、それぞれ右目用映像光線に基づく映像と左目用映像光線に基づく映像とを視認でき、３Ｄ立体画像を視認者が認識できることになる。   The 3D glasses have a polarizing plate on the viewer side. In each lens, the transmission axis direction in each lens is inclined in one direction (for example, clockwise direction) in one lens with respect to the fast axis direction of the quarter wavelength plate, and in the other direction in the other lens ( Inclined in the left rotation direction). For this reason, among the linearly polarized light converted into the linearly polarized light by the quarter wavelength plate as described above, in one lens, the linearly polarized light obtained by converting the left rotated image light beam does not pass and the right rotated image light beam is passed. Only the linearly polarized light that has been converted passes through. On the other hand, in the other lens, the linearly polarized light converted from the right-rotating image light beam does not pass through, but only the linearly polarized light converted from the left-turned image light beam passes through it. As a result, the right eye and the left eye of the wearer can visually recognize the video based on the right eye video light beam and the video based on the left eye video light beam, respectively, and the viewer can recognize the 3D stereoscopic image.

この上記３Ｄメガネのレンズに用いられる１／４波長板としては、ポリカーボネートを主ポリマーとしてシート体を形成し、このシート体を延伸させた光学シートを用いることが公知である。   As a quarter wavelength plate used for the lens of the 3D glasses, it is known to use an optical sheet in which a sheet body is formed using polycarbonate as a main polymer and the sheet body is stretched.

しかしながら、ポリカーボネートからなるシート体にあっては、熱成形等すると、複屈折率が変わってしまうため、この光学シートを用いた３Ｄメガネのレンズは、平面的な形状とならざるを得ない。つまり、デザイン性等を考慮して３Ｄメガネのレンズに例えば３次元的な曲面を持たせると、この曲面形状の形成に際してレンズの位相差フィルムの複屈折率が変化してしまい、その結果、所望の映像光線がレンズを透過することができず、３Ｄ立体画像を視認者が認識できなくなるという不都合が生ずる。   However, in the case of a sheet body made of polycarbonate, the birefringence index is changed by thermoforming or the like. Therefore, the lens of 3D glasses using this optical sheet has to have a planar shape. That is, if the lens of the 3D glasses is given a three-dimensional curved surface in consideration of design, etc., the birefringence of the retardation film of the lens changes when the curved surface is formed. Image light cannot pass through the lens, and the viewer cannot recognize the 3D stereoscopic image.

特開２０１１−４８２３６号公報JP 2011-48236 A

本発明はこれらの不都合に鑑みてなされたものであり、曲面形状等の形状に形成しても、所望の複屈折性が得られるメガネ用位相差フィルム、これを用いた３Ｄメガネ用光学シート、及びこれを用いた３Ｄメガネを提供することを目的とする。   The present invention has been made in view of these inconveniences, and even if formed into a curved shape or the like, a retardation film for glasses that can obtain a desired birefringence, an optical sheet for 3D glasses using the same, And it aims at providing 3D glasses using the same.

上記課題を解決するためになされた本発明のメガネ用位相差フィルムは、
主ポリマーとしてシクロオレフィンコポリマーまたはシクロオレフィンポリマーを含み、
平面方向に複屈折性を有する。 The retardation film for eyeglasses of the present invention made to solve the above problems,
Containing a cycloolefin copolymer or cycloolefin polymer as the main polymer,
It has birefringence in the plane direction.

当該メガネ用位相差フィルムの主ポリマーはシクロオレフィンコポリマーまたはシクロオレフィンポリマーであるため、曲面形状等を形成するために熱成形を行う等、当該メガネ用位相差フィルムに熱や応力を付加しても複屈折性の変化が生じ難い。つまり、シクロオレフィンコポリマーまたはシクロオレフィンポリマーは、熱や応力による位相差の変化が小さいので、熱成形などに際しても複屈折性が維持されやすい。このため、例えばメガネのレンズに用い、このレンズに曲面形状等を形成しても、所望の複屈折性を有したレンズとすることができる。   Since the main polymer of the retardation film for glasses is a cycloolefin copolymer or a cycloolefin polymer, even if heat or stress is applied to the retardation film for glasses, such as thermoforming to form a curved shape or the like. Birefringence change hardly occurs. In other words, the cycloolefin copolymer or cycloolefin polymer has a small change in phase difference due to heat and stress, and thus birefringence is easily maintained during thermoforming. For this reason, even if it uses for a lens of eyeglasses and forms a curved surface shape etc. in this lens, it can be set as the lens which has desired birefringence.

また、当該メガネ用位相差フィルムは、一軸延伸により形成されている構成を採用することが好ましい。これにより、当該メガネ用位相差フィルムを一軸延伸して所望の複屈折性を付与することができる。   Moreover, it is preferable that the said retardation film for spectacles employ | adopts the structure currently formed by uniaxial stretching. Thereby, the said retardation film for spectacles can be uniaxially stretched, and desired birefringence can be provided.

また、当該メガネ用位相差フィルムは、１／４波長板であることが好ましい。これにより、当該メガネ用位相差フィルムは、円偏光を直線偏光に変換することができるので、例えば３Ｄメガネのレンズに好適に用いることができる。   Moreover, it is preferable that the said phase difference film for glasses is a quarter wavelength plate. Thereby, since the said retardation film for glasses can convert circularly polarized light into linearly polarized light, it can be used suitably for the lens of 3D glasses, for example.

さらに、上記課題を解決するためになされた本発明の３Ｄメガネ用光学シートは、上記１／４波長板である当該メガネ用位相差フィルムと、このメガネ用位相差フィルムに積層される偏光板とを備える。   Further, the optical sheet for 3D glasses of the present invention made to solve the above-mentioned problems is the above-mentioned retardation film for glasses which is the ¼ wavelength plate, and a polarizing plate laminated on this retardation film for glasses. Is provided.

当該３Ｄメガネ用光学シートは、３Ｄメガネのレンズとして好適に用いることができ、つまり熱成形などによって曲面形状等に変形させても、複屈折性の変化が生じ難く、このため、曲面形状等に形成しても、所望の複屈折性を有したものとすることができ、レンズに所望の光線を透過させることができる。   The optical sheet for 3D glasses can be suitably used as a lens for 3D glasses. That is, even when deformed into a curved shape by thermoforming or the like, birefringence hardly changes. Even if formed, it can have a desired birefringence, and a desired light beam can be transmitted through the lens.

また、当該３Ｄメガネ用光学シートは、三次元で湾曲している構成を具備することが好ましく、これによりデザイン性に優れた製品とすることが可能であるとともに、上述のように所望の複屈折性を有するものゆえ所望の光線を透過させることができるので、３Ｄメガネのレンズに好適に用いられる。   In addition, the optical sheet for 3D glasses preferably has a three-dimensionally curved configuration, which enables a product having excellent design properties and a desired birefringence as described above. Since it has the property, it can transmit a desired light beam, it is preferably used for a lens of 3D glasses.

また、当該３Ｄメガネ用光学シートは、メガネ用位相差フィルムの進相軸方向と偏光板の透過軸方向とが約４５°の角度で配設されている構成を採用することが好ましい。   The optical sheet for 3D glasses preferably employs a configuration in which the fast axis direction of the retardation film for glasses and the transmission axis direction of the polarizing plate are arranged at an angle of about 45 °.

かかる構成からなる３Ｄメガネ用光学シートによれば、メガネ用位相差フィルムに円偏光が入射されると、円偏光が直線偏光に変換されてメガネ用位相差フィルムを透過する。この透過した直線偏光の偏光方向（振動方向）は円偏光の回転方向及びメガネ用位相差フィルムの進相軸方向によって決定される。具体的には、円偏光が光の進行方向から見て右回転である場合には、透過した直線偏光の偏光方向は、メガネ用位相差フィルムの進相軸方向に対して光の進行方向から見て右回転側に４５°傾斜した方向となる。一方、円偏光が光の進行方向から見て左回転である場合には、透過した直線偏光の偏光方向は、メガネ用位相差フィルムの進相軸方向に対して光の進行方向から見て左回転側に４５°傾斜した方向となる。このため、上記のように進相軸方向と透過軸方向とが約４５°の角度で配設することにより、偏光板は、一方向の回転方向の円偏光が変換された直線偏光（透過軸方向と偏光方向が一致した直線偏光）のみを透過し、他方向の回転方向の円偏光が変換された直線偏光（透過軸方向に対して垂直な偏光方向となる直線偏光）を透過しないことになる。これにより、上記構成からなる３Ｄメガネ用光学シートは、３Ｄメガネのレンズとして好適に用いることができる。   According to the optical sheet for 3D glasses having such a configuration, when circularly polarized light is incident on the retardation film for glasses, the circularly polarized light is converted into linearly polarized light and transmitted through the retardation film for glasses. The polarization direction (vibration direction) of the transmitted linearly polarized light is determined by the rotation direction of the circularly polarized light and the fast axis direction of the retardation film for glasses. Specifically, when the circularly polarized light is clockwise when viewed from the traveling direction of light, the polarization direction of the transmitted linearly polarized light is from the traveling direction of light with respect to the fast axis direction of the retardation film for glasses. The direction is 45 ° inclined to the right rotation side as viewed. On the other hand, when the circularly polarized light is rotated counterclockwise when viewed from the light traveling direction, the polarization direction of the transmitted linearly polarized light is left when viewed from the light traveling direction with respect to the fast axis direction of the phase difference film for glasses. The direction is 45 ° inclined to the rotation side. Therefore, by arranging the fast axis direction and the transmission axis direction at an angle of about 45 ° as described above, the polarizing plate is linearly polarized light (transmission axis) obtained by converting circularly polarized light in one rotational direction. Only linearly polarized light whose direction and polarization direction coincide with each other, and does not transmit linearly polarized light obtained by converting circularly polarized light in the rotational direction of the other direction (linearly polarized light perpendicular to the transmission axis direction). Become. Thereby, the optical sheet for 3D glasses having the above-described configuration can be suitably used as a lens of 3D glasses.

さらに、上記課題を解決するためになされた本発明の３Ｄメガネは、
上記のように進相軸方向と透過軸方向とを配設した当該３Ｄメガネ用光学シートをそれぞれ含む右目用レンズ及び左目用レンズを備え、
右目用レンズ及び左眼用レンズのうち一方のレンズのメガネ用位相差フィルムの進相軸方向が、一方のレンズの偏光板の透過軸方向に対して一方向側で約４５°の角度に配設されており、
右目用レンズ及び左眼用レンズのうち他方のレンズのメガネ用位相差フィルムの進相軸方向が、他方のレンズの偏光板の透過軸方向に対して他方向側で約４５°の角度に配設されている。 Furthermore, the 3D glasses of the present invention made to solve the above problems are
A right-eye lens and a left-eye lens each including the optical sheet for 3D glasses in which the fast axis direction and the transmission axis direction are arranged as described above,
One of the right-eye lens and the left-eye lens has a phase advance axis direction of the eyeglass retardation film at an angle of about 45 ° on one side with respect to the transmission axis direction of the polarizing plate of one lens. Has been established,
The fast axis direction of the retardation film for eyeglasses of the other lens of the right eye lens and the left eye lens is arranged at an angle of about 45 ° on the other direction side with respect to the transmission axis direction of the polarizing plate of the other lens. It is installed.

当該３Ｄメガネは、３Ｄメガネのレンズのメガネ用位相差フィルムの主ポリマーはシクロオレフィンコポリマーまたはシクロオレフィンポリマーであるため、レンズに曲面形状等を形成するために熱成形を行う等、当該メガネ用位相差フィルムに熱や応力を付加しても複屈折性の変化が生じ難い。また、一方のレンズの進相軸方向が透過軸方向に対して一方向側で約４５°の角度に配設され、他方のレンズの進相軸方向が透過軸方向に対して他方向側で約４５°の角度に配設されているので、一方のレンズには一方向の回転方向の円偏光のみが透過し、他方のレンズには他方向の回転方向の円偏光のみが透過することになる。このため、立体画像表示装置から出射される右目用映像光線と左目用映像光線とをそれぞれ右目と左目とで視認することができ、視認者は３Ｄ立体画像が認識できる。   In the 3D glasses, since the main polymer of the retardation film for glasses of the lens of the 3D glasses is a cycloolefin copolymer or a cycloolefin polymer, thermoforming is performed to form a curved surface shape or the like on the lens. Even if heat or stress is applied to the phase difference film, the change in birefringence hardly occurs. Further, the fast axis direction of one lens is disposed at an angle of about 45 ° on one side with respect to the transmission axis direction, and the fast axis direction of the other lens is on the other direction side with respect to the transmission axis direction. Since it is disposed at an angle of about 45 °, only one circularly polarized light in one direction is transmitted through one lens and only one circularly polarized light in the other direction is transmitted through the other lens. Become. Therefore, the right-eye video light beam and the left-eye video light beam emitted from the stereoscopic image display device can be visually recognized by the right eye and the left eye, respectively, and the viewer can recognize the 3D stereoscopic image.

以上説明したように、本発明のメガネ用位相差フィルムは、レンズを曲面形状等の所望形状に形成しても、この形状に形成する際に複屈折性が維持されやすく、このため曲面形状等に形成しても所望の光線を透過することができる。このため、３Ｄメガネ用光学シート及び３Ｄメガネに用いても、デザイン性を高めつつ、３Ｄ立体画像を的確且つ確実に認識することができる。   As described above, even if the retardation film for glasses of the present invention is formed in a desired shape such as a curved surface, the birefringence is easily maintained when the lens is formed in this shape. Even if it is formed, a desired light beam can be transmitted. For this reason, even if it uses for the optical sheet for 3D glasses, and 3D glasses, a 3D stereo image can be recognized correctly and reliably, improving design property.

本発明の一実施形態に係る３Ｄメガネを示す模式的斜視図である。It is a typical perspective view showing 3D glasses concerning one embodiment of the present invention. 図１の３Ｄメガネに用いられる光学シートの概略的断面図である。It is a schematic sectional drawing of the optical sheet used for 3D glasses of FIG.

以下、本発明の一実施形態について、３Ｄメガネ１を例にとり説明する。   Hereinafter, an embodiment of the present invention will be described by taking 3D glasses 1 as an example.

当該３Ｄメガネ１は、フレーム２と、このフレーム２に取付けられた右目用レンズ３及び左目用レンズ３を備えている。   The 3D glasses 1 include a frame 2 and a right-eye lens 3 and a left-eye lens 3 attached to the frame 2.

上記右目用レンズ３及び左目用レンズ３は、シート積層体からなる光学シート１０（３Ｄメガネ用光学シート）を有し、この右目用レンズ３及び左目用レンズ３は、光学シート１０が熱成形されることにより三次元で湾曲した形状を有し、レンズ３の中央側が外側（立体画像表示装置側）に湾出した形状となっている。   The right-eye lens 3 and the left-eye lens 3 have an optical sheet 10 (optical sheet for 3D glasses) made of a sheet laminate, and the right-eye lens 3 and the left-eye lens 3 are obtained by thermoforming the optical sheet 10. Thus, the lens 3 has a three-dimensional curved shape, and the center side of the lens 3 protrudes to the outside (stereoscopic image display device side).

上記光学シート１０は、図２に示すように１／４波長板１１（メガネ用位相差フィルム）と偏光板１２とを有し、偏光板１２の外側に１／４波長板１１が積層されている。換言すれば、１／４波長板１１は、偏光板１２よりもレンズ３の湾出側に配設されている。なお、１／４波長板１１と偏光板１２とは、種々の方法により固着され、例えば接着剤等を介して積層固着されている。なお、接着剤を用いる場合には、透明な接着剤を用いることが好ましい。なお、図２は、熱成形前の光学シート１０を図示している。   As shown in FIG. 2, the optical sheet 10 includes a quarter-wave plate 11 (glasses retardation film) and a polarizing plate 12, and the quarter-wave plate 11 is laminated outside the polarizing plate 12. Yes. In other words, the quarter wavelength plate 11 is disposed on the bay side of the lens 3 with respect to the polarizing plate 12. The quarter-wave plate 11 and the polarizing plate 12 are fixed by various methods, for example, laminated and fixed via an adhesive or the like. In addition, when using an adhesive agent, it is preferable to use a transparent adhesive agent. FIG. 2 shows the optical sheet 10 before thermoforming.

上記偏光板１２は、一定方向の振動方向の光線のみを透過するよう設けられたシート状部材である。この偏光板１２としては、種々の偏光板１２を用いることができるが、例えば、ポリビニルアルコールを主体にヨウ素化合分子を吸着配向させたものを用いることができ、これに保護層等の層を設けたものを用いることも可能である。   The polarizing plate 12 is a sheet-like member that is provided so as to transmit only light beams in a certain vibration direction. As this polarizing plate 12, various polarizing plates 12 can be used. For example, a material obtained by adsorbing and orienting iodine compound molecules mainly composed of polyvinyl alcohol can be used, and a protective layer or the like is provided thereon. It is also possible to use one.

上記１／４波長板１１は、平面方向に複屈折性を有するシート状部材であり、シクロオレフィンコポリマーまたはシクロオレフィンポリマーを主ポリマーとしてシート状に成形されている。この１／４波長板１１は、目的に応じて各種添加材を添加することが可能である。また、１／４波長板１１は、一軸延伸により形成されており、これにより平面方向に複屈折性が付与されている。   The quarter wavelength plate 11 is a sheet-like member having birefringence in the plane direction, and is formed into a sheet shape using a cycloolefin copolymer or a cycloolefin polymer as a main polymer. The quarter-wave plate 11 can be added with various additives according to the purpose. The quarter-wave plate 11 is formed by uniaxial stretching, and thereby birefringence is imparted in the plane direction.

また、１／４波長板１１は、ガラス転移温度Ｔｇが１００℃以上１７０℃以下となるよう設けることが好ましく、より好ましくは１０５℃以上１６０℃以下であり、さらに好ましくは、１１０℃以上１５０℃以下となるよう設けることが好ましい。このようなガラス転移温度の範囲とすることにより、熱成形が容易且つ確実に行えるとともに、熱成形に際して複屈折性が維持されやすい。   The quarter-wave plate 11 is preferably provided such that the glass transition temperature Tg is 100 ° C. or higher and 170 ° C. or lower, more preferably 105 ° C. or higher and 160 ° C. or lower, and still more preferably 110 ° C. or higher and 150 ° C. It is preferable to provide the following. By setting the glass transition temperature in such a range, thermoforming can be performed easily and reliably, and birefringence is easily maintained during thermoforming.

右目用レンズ３の１／４波長板１１の進相軸方向は、右目用レンズ３の偏光板１２の透過軸方向に対して右回転側で約４５°の角度に配設されている。また、左眼用レンズ３の１／４波長板１１の進相軸方向は、左目用レンズ３の偏光板１２の透過軸方向に対して左回転方向で約４５°の角度に配設されている。   The fast axis direction of the quarter wavelength plate 11 of the right-eye lens 3 is arranged at an angle of about 45 ° on the right rotation side with respect to the transmission axis direction of the polarizing plate 12 of the right-eye lens 3. Further, the fast axis direction of the quarter wavelength plate 11 of the left eye lens 3 is arranged at an angle of about 45 ° in the left rotation direction with respect to the transmission axis direction of the polarizing plate 12 of the left eye lens 3. Yes.

より具体的に説明するために一具体例を挙げて説明すると、右目用レンズ３及び左目用レンズ３は、偏光板１２の透過軸方向が水平方向（右目用レンズ３と左目用レンズ３とが並べて配置される方向）に配設されている。そして、右目用レンズ３の１／４波長板１１の進相軸方向は、水平方向に対して左回転側に約４５°傾斜して配設され、左目用レンズ３の１／４波長板１１の進相軸方向は、水平方向に対して右回転側に約４５°傾斜して配設されている。   In order to explain more specifically, a specific example will be described. In the right-eye lens 3 and the left-eye lens 3, the transmission axis direction of the polarizing plate 12 is horizontal (the right-eye lens 3 and the left-eye lens 3 are Are arranged side by side). The fast axis direction of the quarter-wave plate 11 of the right-eye lens 3 is arranged to be inclined by about 45 ° to the left rotation side with respect to the horizontal direction, and the quarter-wave plate 11 of the left-eye lens 3 is arranged. The fast axis direction is inclined about 45 ° to the right side with respect to the horizontal direction.

上記構成からなる３Ｄメガネ１にあっては、装着者に３Ｄ立体画像表示装置からの映像光線に基づいて３Ｄ立体画像を認識させることができる。つまり、右目用映像光線は、右目用レンズ３を透過するが左目用レンズ３は透過せず、左目用映像光線は、左目用レンズ３を透過するが右目用レンズ３を透過しない。   In the 3D glasses 1 having the above-described configuration, the wearer can recognize the 3D stereoscopic image based on the video light from the 3D stereoscopic image display device. That is, the right-eye video light beam passes through the right-eye lens 3 but does not pass through the left-eye lens 3, and the left-eye video beam passes through the left-eye lens 3 but does not pass through the right-eye lens 3.

より具体的に説明すると、例えば、右目用映像光線が右回転の円偏光である場合、この円偏光は、右目用レンズ３の１／４波長板１１を透過すると、この１／４波長板１１は、水平方向に対して左回転側に約４５°傾斜した進相軸を有するので、偏光方向が水平方向の直線偏光に変換される。この場合には、左目用映像光線は左回転であるので、この円偏光は、右目用レンズ３の１／４波長板１１を透過すると、偏光方向が上下方向（水平方向に対して垂直方向）の直線偏光に変更される。偏光板１２の透過軸方向は水平方向であるため、右目用映像光線の円偏光を変換した直線偏光（偏光方向が水平方向）のみが偏光板１２を透過し、左目用映像光線の円偏光を変換した直線偏光（偏光方向が上下方向）は偏光板１２を透過しない。   More specifically, for example, when the right-eye image light beam is circularly polarized light rotated to the right, when the circularly polarized light passes through the quarter-wave plate 11 of the right-eye lens 3, the quarter-wave plate 11 Has a fast axis inclined about 45 ° to the left rotation side with respect to the horizontal direction, so that the polarization direction is converted into horizontal linearly polarized light. In this case, since the left-eye image light beam is rotated counterclockwise, when this circularly polarized light is transmitted through the quarter-wave plate 11 of the right-eye lens 3, the polarization direction is vertical (perpendicular to the horizontal direction). Is changed to linearly polarized light. Since the transmission axis direction of the polarizing plate 12 is the horizontal direction, only linearly polarized light (polarization direction is the horizontal direction) obtained by converting the circularly polarized light of the right-eye image light beam is transmitted through the polarizing plate 12, and the circularly polarized light of the left-eye image light beam is changed. The converted linearly polarized light (the polarization direction is the vertical direction) does not pass through the polarizing plate 12.

また、左目用レンズ３については、左目用映像光線が左回転の円偏光である場合、この円偏光は、左目用レンズ３の１／４波長板１１を透過すると、この１／４波長板１１は、水平方向に対して右回転側に約４５°傾斜した進相軸を有するので、偏光方向が水平方向の直線偏光に変換される。この場合には、右目用映像光線は右回転であるので、この円偏光は、左目用レンズ３の１／４波長板１１を透過すると、偏光方向が上下方向（水平方向に対して垂直方向）の直線偏光に変更される。偏光板１２の透過軸方向は水平方向であるため、左目用映像光線の円偏光を変換した直線偏光（偏光方向が水平方向）のみが偏光板１２を透過し、右目用映像光線の円偏光を変換した直線偏光（偏光方向が上下方向）は偏光板１２を透過しない。   For the left-eye lens 3, when the left-eye image light beam is counterclockwise circularly polarized light, when the circularly polarized light passes through the quarter-wave plate 11 of the left-eye lens 3, the quarter-wave plate 11 Has a fast axis inclined about 45 ° clockwise relative to the horizontal direction, so that the polarization direction is converted into horizontal linearly polarized light. In this case, since the right-eye image light beam is rotated to the right, when the circularly polarized light passes through the quarter-wave plate 11 of the left-eye lens 3, the polarization direction is vertical (perpendicular to the horizontal direction). Is changed to linearly polarized light. Since the transmission axis direction of the polarizing plate 12 is the horizontal direction, only the linearly polarized light (polarization direction is the horizontal direction) obtained by converting the circularly polarized light of the left-eye image light beam is transmitted through the polarizing plate 12 and the circularly polarized light of the right-eye image light beam is changed. The converted linearly polarized light (the polarization direction is the vertical direction) does not pass through the polarizing plate 12.

このように、右目用映像光線の円偏光を変換した直線偏光のみが右目用レンズ３を透過し、左目用映像光線の円偏光を変換した直線偏光のみが左目用レンズ３を透過するので、上記構成からなる３Ｄメガネ１を装着することにより、３Ｄ画像表示装置からの映像光線に基づいて３Ｄ立体画像を認識することができる。   As described above, only the linearly polarized light obtained by converting the circularly polarized light of the right-eye image light beam is transmitted through the right-eye lens 3, and only the linearly polarized light obtained by converting the circularly polarized light of the left-eye image light beam is transmitted through the left-eye lens 3. By wearing the 3D glasses 1 having the configuration, it is possible to recognize a 3D stereoscopic image based on video rays from the 3D image display device.

また、当該３Ｄメガネ１にあっては、レンズ３が三次元で湾曲しているので、デザイン性に優れた製品とすることができる。このため、３Ｄ画像表示装置を見るためにのみ用いることなく、例えば屋外などの偏光サングラスの用途にも用いることも可能となる。   Further, in the 3D glasses 1, since the lens 3 is curved in three dimensions, a product having excellent design can be obtained. For this reason, it can be used not only for viewing the 3D image display device but also for the application of polarized sunglasses such as outdoors.

しかも、１／４波長板１１の主ポリマーが、シクロオレフィンコポリマーまたはシクロオレフィンポリマーであるため、上記のように三次元で湾曲させるために熱成形等を行う際に、１／４波長板１１に熱や応力が付加されても、熱や応力による位相差の変化が小さく、１／４波長板１１の複屈折性の変化が生じ難い。このため、レンズ３に上述したような所望の光線を透過させることができる。   In addition, since the main polymer of the quarter wavelength plate 11 is a cycloolefin copolymer or a cycloolefin polymer, when the thermoforming or the like is performed to be curved in three dimensions as described above, Even when heat or stress is applied, the change in phase difference due to heat or stress is small, and the change in birefringence of the quarter-wave plate 11 hardly occurs. For this reason, the desired light beam as described above can be transmitted through the lens 3.

また、１／４波長板１１は一軸延伸により形成されているので、所望の複屈折性を容易且つ確実に得ることができる。   Moreover, since the quarter wavelength plate 11 is formed by uniaxial stretching, desired birefringence can be obtained easily and reliably.

なお、上記実施形態は上述の構成を有し、上述の利点を奏するものであったが、本発明はこれに限定されるものではなく、本発明の意図する範囲内において適宜設計変更可能である。   In addition, although the said embodiment has the above-mentioned structure and produced the above-mentioned advantage, this invention is not limited to this, A design change is possible suitably within the range which this invention intends. .

つまり、上記実施形態の３Ｄメガネにおいては、右目用レンズの偏光板の透過軸方向と左目用レンズの偏光板の透過軸方向とを一致させたものについて説明したが、本発明はこれに限定されない。つまり、例えば、右目用レンズの偏光板の透過軸方向と左目用レンズの偏光板の透過軸方向とを互いに直交するよう配設して（例えば、水平方向に対して、一方を左回転方向４５°傾斜させ、他方を右回転方向に４５°傾斜させて配設して）、右目用レンズの１／４波長板の進相軸方向と左目用レンズの１／４波長板の進相軸方向とを一致させ、上記各透過軸方向に対して約４５°の角度に配設する（進相軸方向を水平方向に配設する）ことも可能である。   That is, in the 3D glasses of the above embodiment, the description has been given of the case where the transmission axis direction of the polarizing plate of the right-eye lens and the transmission axis direction of the polarizing plate of the left-eye lens are matched, but the present invention is not limited to this. . That is, for example, the transmission axis direction of the polarizing plate of the right-eye lens and the transmission axis direction of the polarizing plate of the left-eye lens are disposed so as to be orthogonal to each other (for example, one of the rotation direction is 45 in the left rotation direction). Inclined by 45 ° and the other inclining to the right by 45 °), the fast axis direction of the quarter-wave plate of the right-eye lens and the fast axis direction of the quarter-wave plate of the left-eye lens Can be arranged at an angle of about 45 ° with respect to each of the transmission axis directions (the fast axis direction is arranged in the horizontal direction).

また、上記実施形態の３Ｄメガネ用光学シートは偏光板と１／４波長板との二層構造のものについて説明したが、本発明の３Ｄメガネ用光学シートはこれに限定されるものではない。例えば、偏光板と１／４波長板との間に基材層を設けることも適宜設計変更可能である。具体的には、基材層の一面に偏光板を積層接着し、他方の面に１／４波長板を積層接着することも可能である。なお、基材層は、偏光板又は１／４波長板の外面に設けることも適宜設計変更可能である。   Moreover, although the optical sheet for 3D glasses of the said embodiment demonstrated the thing of the two-layer structure of a polarizing plate and a quarter wavelength plate, the optical sheet for 3D glasses of this invention is not limited to this. For example, providing a base material layer between the polarizing plate and the quarter-wave plate can be appropriately changed in design. Specifically, a polarizing plate can be laminated and adhered to one surface of the base material layer, and a quarter wavelength plate can be laminated and adhered to the other surface. The base layer can be appropriately changed in design by providing it on the outer surface of the polarizing plate or quarter-wave plate.

また、例えば、偏光板又は／及び１／４波長板の外面に保護層等の層を設けることも適宜設計変更可能である。なお、保護層等の層を偏光板又は／及び１／４波長板の外面に設ける場合には、コーティング層とすることが好ましい。また、このようなコーティング層の塗布は、三次元立体形状に形成した後に行うことが好ましい。これにより、コーティング層が複屈折性を有さず、３Ｄメガネとして好適に用いることができる。   In addition, for example, providing a layer such as a protective layer on the outer surface of the polarizing plate and / or the quarter-wave plate can be appropriately changed in design. In addition, when providing layers, such as a protective layer, on the outer surface of a polarizing plate or / and a quarter wavelength plate, it is preferable to set it as a coating layer. Moreover, it is preferable to perform application | coating of such a coating layer, after forming in three-dimensional solid shape. Thereby, the coating layer does not have birefringence and can be suitably used as 3D glasses.

以上のように、本発明のメガネ用位相差フィルム、これを用いた３Ｄメガネ用光学シート及びこれを用いた３Ｄメガネは、３Ｄ立体画像表示装置を視認する際に好適に用いることができる。   As described above, the retardation film for glasses of the present invention, the optical sheet for 3D glasses using the same, and the 3D glasses using the same can be suitably used for visually recognizing the 3D stereoscopic image display device.

１ メガネ
２ フレーム
３ レンズ
１０ 光学シート
１１ 波長板
１２ 偏光板 1 Glasses 2 Frame 3 Lens 10 Optical Sheet 11 Wave Plate 12 Polarizing Plate

Claims (7)

主ポリマーとしてシクロオレフィンコポリマーまたはシクロオレフィンポリマーを含み、
平面方向に複屈折性を有するメガネ用位相差フィルム。 Containing a cycloolefin copolymer or cycloolefin polymer as the main polymer,
A retardation film for eyeglasses having birefringence in a planar direction. 一軸延伸により形成されている請求項１に記載のメガネ用位相差フィルム。   The retardation film for glasses according to claim 1, wherein the retardation film is formed by uniaxial stretching. １／４波長板である請求項１または請求項２に記載のメガネ用位相差フィルム。   The retardation film for spectacles according to claim 1, wherein the retardation film is a quarter wave plate. 請求項１、請求項２または請求項３に記載のメガネ用位相差フィルムと、このメガネ用位相差フィルムに積層される偏光板とを備える３Ｄメガネ用光学シート。   An optical sheet for 3D glasses comprising the retardation film for glasses according to claim 1, claim 2 or claim 3 and a polarizing plate laminated on the retardation film for glasses. 三次元で湾曲している請求項４に記載の３Ｄメガネ用光学シート。   The optical sheet for 3D glasses according to claim 4, which is curved in three dimensions. メガネ用位相差フィルムの進相軸方向と偏光板の透過軸方向とが約４５°の角度で配設されている請求項４または請求項５に記載の３Ｄメガネ用光学シート。   The optical sheet for 3D glasses according to claim 4 or 5, wherein the fast axis direction of the retardation film for glasses and the transmission axis direction of the polarizing plate are disposed at an angle of about 45 °. 請求項６に記載の３Ｄメガネ用光学シートをそれぞれ含む右目用レンズ及び左目用レンズを備え、
右目用レンズ及び左眼用レンズのうち一方のレンズの眼鏡用位相差フィルムの進相軸方向が、一方のレンズの偏光板の透過軸方向に対して一方向側で約４５°の角度に配設されており、
右目用レンズ及び左眼用レンズのうち他方のレンズの眼鏡用位相差フィルムの進相軸方向が、他方のレンズの偏光板の透過軸方向に対して他方向側で約４５°の角度に配設されている３Ｄメガネ。

A right-eye lens and a left-eye lens each including the optical sheet for 3D glasses according to claim 6,
One of the right-eye lens and the left-eye lens has a fast axis direction of the phase difference film for spectacles arranged at an angle of about 45 ° on one side with respect to the transmission axis direction of the polarizing plate of one lens. Has been established,
The fast axis direction of the spectacle phase difference film of the other lens of the right eye lens and the left eye lens is arranged at an angle of about 45 ° on the other direction side with respect to the transmission axis direction of the polarizing plate of the other lens. 3D glasses installed.

JP2011088695A 2011-04-12 2011-04-12 Retardation film for glasses, optical sheet for 3d glasses, and 3d glasses Pending JP2012220853A (en)

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CN201210105538.XA CN102736162B (en) 2011-04-12 2012-04-11 Phase difference film for glasses, optical slice for 3D glasses and 3D glasses
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