36results about "Polarising elements" patented technology

Method and apparatus for bonding a polarizing plate high in operating efficiency and yield. The apparatus includes a cutting unit for cutting at least a polarizing plate of a strip-shaped film, composed of the polarizing plate and a release film bonded to the polarizing plate, leaving the release film uncut, when a forward end side pre-severed end face of the strip-shaped film perpendicular to the longitudinal direction of the strip-shaped film has traveled up to a length corresponding to a length of a substrate, to form a film piece, a release film separating unit for separating the release film from the film piece thus severed, and a bonding unit for bonding the tacky surface of the film piece freed of the release film to a mating position of the substrate so that the forward end side end face of the transported substrate is parallel to the pre-severed end face of the film piece.

An image generator having an illuminator, a reflective display device (in one embodiment) and a beamsplitter which produces a virtual image of an image created in a light modulating medium on said reflective display device. In one embodiment, the image generator is a miniature image generator for a relatively small, lightweight head-mounted display which provides a magnified virtual image which is viewed by a viewer. The beamsplitter is optically coupled to the reflective display device. The beamsplitter comprises a film having a plurality of layers including at least a first layer which comprises an oriented birefringent material. The beamsplitter has a wide angle of acceptance.

An optical system is provided, for example for use with a display device, for varying the shape of a surface in which an image displayed by the display device is perceived. The optical system comprises first and second spaced-apart partial reflectors, at least one of which is switchable between a first non-flat shape and a second different shape, which may be flat or non-flat. The reflectors, together with polarisation optics, provide a light path such that light from the display is at least partially transmitted by the first reflector, partially reflected by the second reflector, partially reflected by the first reflector and partially transmitted by the second reflector. Light which does not follow the light path is prevented from leaving the optical system.

The present invention is an image display device in which a two-dimensional image displayed on an image display element is observed by an observer as a magnified virtual image through a virtual image optical system. The second optical plane (15c) on the side of the optical pupil (19) and the reflection and transmission of the optical axis having an angle greater than or equal to 30 degrees and less than 90 degrees with the normal line of the first optical plane or the second optical plane surface (16), which reflects or transmits the image light incident from the incident optical surface (15a), and the incident optical surface makes the relay optical system (12) shown in the image display element (11) ) transited image light incident; reflective optical element (18), reflecting so that the image light reflected on the reflective transmission surface and emitted from the first optical plane is directed to the reflective transmission surface and becomes parallel light; and the phase difference optical element (17), arranged in the optical path between the first optical plane and the reflective optical element, to convert the polarization state of the image light.

A method of producing an optical film comprising at least two ionizing radiation-curing layers on a transparent substrate, the method comprising: Step 1 of irradiating a layer A, which comprises two or more kinds of polymerization initiators having different absorption ends at a longer wavelength side in wavelength range of sensitivity to which they are sensitive, with an ionizing radiation having a wavelength to which at least one kind (a) of the polymerization initiators is not substantially sensitive and at least one kind (b) of the polymerization initiators is sensitive; and Step 2 of spreading a coating solution for layer B comprising at least one polymerization initiator (c) over the layer A after Step A and then irradiating the coating solution for layer B with an ionizing radiation having a wavelength to which the polymerization initiators (a) and (c) are sensitive.

There are provided a circularly polarizing plate which includes an optically anisotropic layer formed by using a discotic liquid crystal compound and an optically anisotropic layer formed by using a rod-like liquid crystal compound, inhibits an alignment defect of the rod-like liquid crystal compound, and has excellent visibility. The circularly polarizing plate has an optical laminate and a polarizing film.

A red-colored film in which when an elliptically polarized light is incident on the film in a direction 45° aslant from a normal line direction with respect to a surface of the film, a light transmitted through the film has an average amplitude transmittance ratio (av. tan Ψ) in a wavelength region of 575 to 635 nm, which satisfies the following equation (1):

0.960<av. tan Ψ<1.040   (1).

A red-colored composition contains a red pigment A having a BET specific surface area in the range from 90 to 140 m²/g, a red pigment B having a BET specific surface area in the range from 70 to 85 m²/g, and a pigment carrier formed of a transparent resin, a precursor of the transparent resin or a mixture of the tarns parent resin and precursor thereof. A color filter has the red-colored film as a red color filter segment. The liquid crystal display device includes the color filter.

A polymer film stretched after formed by solution casting, of which the wavelength dispersion of the refractivity anisotropy and/or the refractivity anisotropy differ between two surfaces of the film is disclosed.

The present invention relates to a polarizing plate and an image display device having the same. More specifically, the present invention relates to a polarizing plate and an image display device having the same, the polarizing plate comprising: a polarizer layer; an adhesive layer formed on at least one surface of the polarizer layer; and a phase difference film including a structure in which a liquid crystal layer, an alignment layer, and a substrate make contact in regular sequence, and the liquid crystal makes contact with the adhesive layer, wherein the alignment layer is formed by a composition for forming the alignment layer, which includes an adhesion-reinforcing agent including an isocyanate group and a (meth)acrylate group at an end portion thereof so as to form bonds with a reactive group of the surface of the substrate and a reactive group in the liquid crystal compound of the liquid crystal layer, respectively, thereby simplifying a manufacturing process, achieving excellent interlayer adhesion, and enabling the implementation of a thin polarizing plate.

A wire grid polarizer including a substrate, parallel conductive wire patterns which protrude from a top surface of the substrate, non-conductive wire patterns which are formed on the conductive wire patterns, respectively, and a protective layer which is formed on the conductive wire patterns and the non-conductive wire patterns. The protective layer includes first transparent particles having a diameter greater than a period of the conductive wire patterns, and spaces between the conductive wire patterns are filled with air or are evacuated to form a vacuum.

The purpose of the present invention is to provide a phase difference film which is not prone to color loss and color shift even in environments with harsh temperature conditions and humidity conditions, which can be manufactured by the melt film formation method. This phase difference film fulfills the relations of expressions (A) and (B) below. Expression (A): 0.7 < R1(450)/R1(550) < 1; Expression (B): |R2(450)/R2(550) - R1(450)/R1(550)| < 0.020

Curved lenses configured to decode three dimensional content and method of fabricating the same. The lenses comprise a polyvinylalcohol polarizer film laminated with triacetate on both sides, wherein the polarizer film has a polarizing efficiency equal to or exceeding 99% and a transmittance percentage equal to or exceeding 35% and a retarder film (e.g., norbornene copolymer resin) laminated on a front surface of the polyvinylalcohol polarizer film laminated with triacetate and aligned to produce a desired circular polarization responsive to specified retardation wavelengths.

The invention provides a polarizing plate capable of suppressing light leakage and an image display device. The polarizing plate (1) has a film-shaped polarizing film (7) and a plurality of optical films (3, 5, 9, 11, 13) overlapping with the polarizing film (7). The verticality (a/b) of a hole (21) penetrating through the polarizing plate (7) is above 0.00 and smaller than 0.32. The width (W) of a polarization eliminating part (23) around the hole (21) is above 0.00 [mu]m and smaller than 32 [mu]m.

Disclosed is a polyurethane resin for a phase difference film. Also disclosed is a phase difference film that is free from heat deterioration of the film even after a step of heating the film to a temperature at or above the glass transition temperature (Tg) and then stretching the heated film and does not cause a lowering in phase difference even when the stretched film is used under high temperatures, for example, within an automobile in summer. The polyurethane resin comprises an alicyclic component and/or an aromatic component and is characterized by having a glass transition temperature of 100 DEG C or above and below 200 DEG C. Preferably, the polyurethane resin is one obtained by polymerizing a diisocyanate having a cyclohexane structure and a diol having a cyclohexane structure, or one obtained by polymerizing a diisocyanate having a phenyl group and a diol having a cyclohexane structure. The phase difference film comprises the polyurethane resin. Further disclosed is an optical film.

The present invention provides a dual-band circular polarization selector and a preparation method thereof. The dual-band circular polarization selector comprises a dielectric substrate, a dielectricplate arranged on the dielectric substrate, a metal split resonant ring arranged on the surface of the dielectric plate, and a metal antenna arranged on the dielectric substrate, wherein an included angle is between the planes where the dielectric substrate and the dielectric plate are located. The dual-band circular polarization selector is a dual-band and miniaturized circular polarizer, the degree of integration is high, and the range of operating frequency is wide.

A method for prepared polarization unit applied on display forms at least one diffusion layer on display face plate or on polarization plate of said display for raising visual angle scope of said display.

The present invention relates to a radical-curable adhesive composition including a (A) radical-polymerizable compound that includes at least one hydrophilic functional group in the molecule in greater than 30 parts by weight and less than or equal to 93 parts by weight; a (B) multifunctional (meth)acryl-based compound in 5 to 40 parts by weight; a (C) phosphate compound that includes one or two (meth)acrylic groups in the molecule in 1 to 40 parts by weight; and a (D) radical initiator in 0.5 to 20 parts by weight, with respect to 100 parts by weight of the radical-curable adhesive composition, and a polarizing plate and an optical member including the radical-curable adhesive composition.

The invention discloses a vortex light generating device and a manufacturing method thereof. The vortex light generating device comprises a substrate and a reflection spiral phase plate, wherein the substrate is a flat cylindrical glass substrate; the reflection type spiral phase plate is composed of not less than three fan-shaped steps with equal height difference and equal radius, the central angles of all the steps are equal, and the sum of the number of circle center angles is 360 degrees; the central axis of the step and the central axis of the substrate are collinear; and the steps are arranged clockwise or anticlockwise from low to high and are plated by reflection films. According to the vortex light generating device, Fresnel loss caused when a traditional light conversion device is not coated or phase distortion caused when an antireflection film is coated is fundamentally eliminated, an operator only needs to convert steps of different heights to convert incident light of different wavelengths into vortex light, the application range is widened, the application of the device in broadband is realized, and the conversion efficiency and the conversion purity are improved. The manufacturing method of the vortex light generating device is mature in process, simple in step, low in energy consumption and easy to operate.

The invention discloses a PMMA/PC-based high-performance polaroid, which consists of a base film, and a protective layer, a haze adjusting layer, a light-transmitting electrode layer and a functional layer which are sequentially stacked on one side of the base film, the base film is prepared from the following raw materials in parts by weight: 100-120 parts of PMMA (Polymethyl Methacrylate) resin, 80-100 parts of PC (Polycarbonate) resin, 5-10 parts of glass fiber, 10-20 parts of PVC (Polyvinyl Chloride) resin, 0.5-0.8 part of a toughening agent, 0.1-0.3 part of a dispersing agent and 0.1-0.3 part of a flatting agent. The PMMA and PC materials are selected to replace TAC materials, the production cost of the polaroid is greatly reduced, and the round polaroid which is high in performance, capable of being reeled to reeled, full in manufacturing process and wide in viewing angle is obtained from the aspects of design, regulation and control of a polaroid base film raw material formula.

Disclosed herein is a photo-alignment polymer, which can be preferably applied to an alignment layer or the like of a three-dimensional display device because its alignment direction is easily changed depending on the polarization direction, and an alignment layer and liquid crystal retardation film including the same. The photo-alignment layer includes a cyclic olefin repeating unit substituted with one or more photoreactive groups, and has an absorbance ratio of 0.02 or more, the absorbance ratio being defined by Mathematical Formula 1 above, when the photo-alignment polymer is exposed to first polarized UV radiation having a wavelength of 280 to 315 nm and a first polarization direction at an exposure intensity of 60 mJ/cm² or less to conduct first photo-alignment and is then exposed to second polarized UV radiation having a wavelength of 280 to 315 nm and a second polarization direction changed by 90° from the first polarization direction at an exposure intensity of 60 mJ/cm² or less to conduct second photo-alignment.

The disclosure provides a flexible polarizer, including a polarizing layer, a first protective layer, and a second protective layer. The polarizing layer has a first surface and a second surface opposite to each other. The first protective layer is disposed on the first surface and comprises polyvinylidene difluoride (PVDF) or a kind of high phase retardation plastics. The second protective layer is disposed on the second surface and comprises PVDF or a kind of the high phase retardation plastics. The first protective layer, the second protective layer, and the polarizing layer are configured to be bent along a bend line.