2124 results about "Optical thin film" patented technology

The interferometric modulator of the invention includes a transparent substrate (refractive index: n₀) 12, an optical thin film (complex index of refraction: N₁=n₁−i·k₁) 13 provided on the transparent substrate 12, and an absorber layer (complex index of refraction: N_s=n_s−i·k_s) 14 opposed to the optical thin film 13, the distance of a gap to the optical thin film 13 being variable, wherein the relation n₁>n₀, k₁≅0 and n_s>n₀ is satisfied.

A backlight module comprises a light transmissive substrate, an optical film, and at least one light source. In this case, the optical film has a first surface and a second surface opposite to the first surface. The first surface of the optical film is connected to the transparent surface, and the second surface of the optical film has at least one fresnel area. The light source is disposed at one side of the light transmissive substrate.

An optical film for use in transparent displays, such as reflective LCDs. The optical film has three-dimensional, prismatic structures that reflect incoming light. The prismatic structures are configured so that the reflecting facets orient the reflected light in desired reflective light pattern. The pattern shape and intensity can be controlled by the shape and dimensions of the various reflecting facets. In one embodiment, the height of the prismatic structure varies along two dimensions of the structure.

An optical film having excellent light utilization efficiency and high brightness, and a liquid crystal display using the optical film. The optical film is formed by laminating integrally a brightness enhancement film (A) that separates natural light into transmitted light and reflected light and a collimating film (B) having an uneven portion on a surface thereof. Since an air interface is eliminated by the integral lamination of the brightness enhancement film and the collimating film, stray light is reduced, and the brightness enhancement film has an improved efficiency in reflecting and polarizing light; thereby, enhancing the brightness.

An optical film in which a retardation film is laminated on one side of a polarizing plate, in which a transparent protective film is laminated on both sides of a polarizer, so that an absorbing axis of the polarizing plate and a slow axis of the retardation film may be perpendicular or may be parallel to each other, wherein a value Nz represented by Nz=(nx1-nzi)/(nx1-ny1) satisfies a range of 0.4 through 0.6, and an in-plane retardation Re1=(nx1-ny1)xd1 is 200 through 350 nm, where, a direction of the retardation film in which an in-plane refractive index within the film surface concerned gives a maximum is defined as X-axis, a direction perpendicular to X axis is defined as Y-axis, a thickness direction of the film is defined as Z-axis, refractive indexes in axial direction are defined as nx1, ny1, nz1, respectively, and a thickness of the film is defined as d1 (nm), and the transparent protective films comprise a thermoplastic saturated norbornene resin, may realize an easily viewable display with high contrast ratio in a wide range when applied to a display system and that may provide a retardation value stabilized under conditions of high temperature or high humidity.

An image analysis workstation for analyzing optical thin film arrays is disclosed. One disclosed embodiment relates to individual arrays that comprise a single optical thin film test surface that provides a plurality of discretely addressable locations, each comprising an immobilized capture reagent for an analyte of interest. These are referred to herein as "arrayed optical thin film test surfaces." Preferably, an individual arrayed optical thin film test surface comprises at least 4, more preferably at least 16, even more preferably at least 32, still more preferably at least 64, and most preferably 128 or more discretely addressable locations. One or more of the discretely addressable locations may provide control signals (e.g., for normalizing signals and/or that act as positive and/or negative controls) or fiducial signals (i.e., information that is used to determine the relative alignment of the arrayed optical thin film test surface within the device.

A steerable optical arrangement. The inventive arrangement includes a first prism mounted for rotation about an optical axis and a second prism mounted for rotation about the optical axis. In accordance with the inventive teachings, the first prism and/or the second prism have at least one surface contoured to correct for optical aberration. In the illustrative embodiment, the first and second prisms are Risley prisms. In addition, the illustrative implementation includes a first motor arrangement for rotating the first prism about the optical axis and a second motor arrangement for rotating the second prism about the optical axis. A controller is provided for activating the first and second motors to steer the beam at an angle phi and nod the beam at an angle theta. At least two surfaces at least one prism is contoured to correct for astigmatism, coma, trefoil and other non-rotationally symmetric aberration. The contour is effected by laser etching, micro-machining or optical thin-film coating of the prisms in the manner disclosed herein.

An optical thin film can have a refractive index variation along a dimension that is perpendicular to its thickness. Two areas that have equal physical thicknesses can have different optical thicknesses. Including the thin film as a layer in a thin film optical filter can provide a corresponding variation in the filter's spectral properties. Dosing an optical thin film with ultraviolet light can cause the refractive index variation. Subjecting the film to hydrogen can increase the refractive index's response to the dose of light. Dosing a region of a thin film optical filter with ultraviolet light can change the spectral properties of the region, for example shifting an out-of-specification optical filter into specification thereby increasing manufacturing yield. An agent can promote the film's response to the dose.

A method for producing an optical film including: laminating a hard coat layer on one side of an optical substrate in roll form, the hard coat layer having a transparent support and an optical anisotropic layer. The transparent support is laminated on the optical anisotropic layer, the one side is a transparent support-side of the optical substrate, the hard coat layer is obtained by coating, drying and curing a composition for forming a hard coat layer containing a curable monomer, a photo-polymerization initiator, and a solvent. The solvent is a mixture of at least one solvent selected from (S-1) and (S-2) and at least one solvent selected from (S-3), or a mixture of at least one solvent selected from (S-1) and at least one solvent selected from (S-2): (S-1) solvents dissolving the transparent support; (S-2) solvents swelling the transparent support; and (S-3) solvents neither dissolving nor swelling the transparent support.

Optical component for use in a touch sensor and method of fabrication of same are disclosed. Optical component includes a multilayer optical film at least some layers of which are fabricated on the same manufacturing line and using the same manufacturing method. Each layer of the multilayer optical film is designed primarily to provide a desired associated property.

Multilayer optical films are comprised of materials with glass transition temperatures below room temperature (<30° C.). The high refractive index polymers are unique in that they exhibit mechanical properties similar to other low Tg semi-crystalline polymers, yet have significant birefringence (>0.05) when strain induced oriented. Novel combinations of comonomers for thermoplastics control the rate of crystallinity for improved processability and flexibility, giving the films crease and crumple recovery advantages.

The invention relates to a light redirecting polymeric film comprising a plurality of polymeric individual optical elements wherein the elements comprise curved wedge shaped features in the plane of the film, having a length in the range of 800 to 4000 micrometers.

An optical film 10 has a transparent base film 11 made of polyethylene terephthalate (PET), a prism made of photo-curing resin such as acryl modified epoxy on an incident surface 12 that is one face of the base film 11, and a hologram similarly made of photo-curing resin on an exit surface 13 opposing the incident surface 12. The prism has grooves or ridges each having a substantially triangular cross section to totally reflect incident light so as to bend the light into a direction perpendicular to the exit surface 13. The hologram anisotropically diffuses light exiting from the exit surface 13, to improve brightness.

An optical multilayer structure material has a structure such that, on a substrate, a conductive layer in contact with the substrate, a gap portion having a size that enables an interference phenomenon to occur and can be changed, and an optical thin film are formed in this order. The circumference of a movable portion in the optical thin film is uniformly supported by supporting portions, suppressing generation of strain due to an internal stress. Through holes are formed in the movable portion to allow an etchant to easily reach a sacrifice layer when forming a gap portion by etching for sacrifice layer. There is provided an optical multilayer structure material having a simple construction, which can suppress generation of strain due to an internal stress and can be advantageously used in an image display apparatus.

Optical films having structured surfaces are used, inter alia, for managing the propagation of light within a display. As displays become larger, it becomes more important that the film be reinforced so as to maintain rigidity. An optical film of the invention has a first layer comprising inorganic fibers embedded within a polymer matrix. The first layer has a structured surface to provide an optical function to light passing therethrough. The film may have various beneficial optical properties, for example, light that propagates substantially perpendicularly through the first layer may be subject to no more than a certain level of haze or light incident on the film may be subject to a minimum value of brightness gain. Various methods of manufacturing the films are described.

According to the invention, an optical film with adhesive on both sides comprises: an optical film including a polarizing plate; a first pressure sensitive adhesive layer provided on a surface of the optical film at a side configured to be bonded to an image display cell; and a second pressure sensitive adhesive layer provided on a surface of the optical film at a side configured to be bonded to a transparent plate or the touch panel. Further, a protective sheet is releasably attached on each of the first pressure sensitive adhesive layer and the second pressure sensitive adhesive layer. A thickness of the second pressure sensitive adhesive layer is preferably 30 μm or more. In a practical use, the optical film with adhesive on both sides according to the present invention is, for example, disposed between a front transparent plate or a touch panel and an image display cell.

A method of sequentially laminating a carrier film-attached optical film laminate to a rectangular-shaped panel having a long side and a short side, is provided. The optical film laminate includes an optical film including a thin polarizing film, and a carrier film attached to the optical film through an adhesive layer. The method includes the steps: forming a plurality of slits in the carrier film-attached optical film laminate in a width direction thereof at lengthwise given intervals to extend from a surface of the optical film on a side opposite to the carrier film to a depth reaching a surface of the carrier film adjacent to the optical film to thereby form an optical film sheet supported by the carrier film, between lengthwisely adjacent two of the slits; and laminating each of the optical film sheets to a respective one of the panels through the adhesive layer.

An MgF₂ optical thin film is formed on an optical surface of a base material. The MgF₂ optical thin film includes MgF₂ particles and an amorphous silicon oxide-based binder which exists on the surfaces of the MgF₂ particles and between the MgF₂ particles. Owing to this amorphous silicon oxide-based binder, the optical thin film can have high mechanical strength and high adhesion to the base material, while having excellent environment resistance and a lower refractive index.

The disclosed a pressure sensitive adhesive for polarizing plates which has a storage elastic modulus (G′) at 23° C. of at least 0.3 MPa; a polarizing plate having a pressure sensitive adhesive; a process for producing the above polarizing plate which comprises sticking a polarizing plate on a tacky adhesive material layer formed on a releasing layer of a releasing sheet, and thereafter irradiating with an active energy beam from the releasing sheet side; an optical film which comprises a polarizing plate and a phase difference plate; and a process for producing the above optical film. The pressure sensitive adhesive and polarizing plate having the pressure sensitive adhesive are characterized in that they are capable of sticking with high durability, the polarizing plate to a and phase difference plate, and the resultant liquid crystal display unit is less liable to cause light leakage under the conditions of high temperature.

A method of film fabrication is taught that uses a coating and drying apparatus to fabricate resin films suitable for optical applications. In particular, resin films are prepared by simultaneous application of multiple liquid layers to a moving carrier substrate having low surface energy. After solvent removal, the resin films are peeled from the sacrificial carrier substrate. Films prepared by the current invention exhibit good dimensional stability and low out-of-plane retardation.

A solar panel mounting arrangement, and electronic device, and a wireless device, includes a solar panel (204); and a wavelength selectively reflective optical film (202) being disposed in front of the solar panel for the optical film to substantially reflect a pre-selected band (304) of solar irradiation frequencies (302) in the visible light range and incident on a front surface of the optical film (202) while allowing solar irradiation frequencies (302) outside of the pre-selected band (304) to substantially pass through the optical film (202) and irradiate the solar panel (204). The optical film (202) can include at least one of an iconic pattern, a company logo, and a photo, that is visible from the front of the optical film (202). The optical film (202) can include holographic film. The optical film can include a multi-layer film.

Provided are a highly transmissive optical thin film having an improved structure, in which, optical reflection (due to a difference in the refractive index between a semiconductor material and the air, when light is extracted from a semiconductor light emitting device into the air) may be suppressed, an optical output loss may be reduced and light transmittance efficiency may be maximized or increased, a semiconductor light emitting device having the same, and methods of fabricating the same. The optical thin film may include a first material layer having a first refractive index, a second material layer formed on the first material layer and having a second refractive index that is smaller than the first refractive index, and a graded-refractive index layer interposed or inserted between the first material layer and the second material layer and having a multi-layer structure in which refractive index distribution gradually decreases in the range between the first refractive index and the second refractive index as the refractive index distribution progresses from the first material layer toward the second material layer.

According to an optical film laminated body containing a reflective polarizing film having a water vapor transmittance of from 5 to 20 g/m²/day, an absorptive polarizing film and a transparent film having a water vapor transmittance of from 100 to 500 g/m²/day, in this order, characterized in that a transmission axis of the reflective polarizing film is in parallel to a transmission axis of the absorptive polarizing film, sufficient adhesion property between the reflective polarizing film and the absorptive polarizing film can be obtained, so as to provide an optical film laminated body causing no warpage.

The present invention relates to an optical film that is excellent in optical properties and can be produced at low cost. In the optical film formed by laminating a transparent polymer film layer and a birefringent layer of a non-liquid crystalline polymer, the birefringent layer satisfies a condition represented by nx≧ny>nz and the in-plane retardation of the transparent polymer film layer is 50 nm or less. In the above formula, nx, ny and nz are the refraction indices in the X-, Y- and Z-axes directions of the birefringent layer, respectively. The X-axis direction is the axial direction in which the refraction index shows a maximum value in the in-plane direction of the birefringent layer, the Y-axis direction is the axial direction perpendicular to the X-axis direction in the plane, and the Z-axis direction is the thickness direction perpendicular to the X- and Y-axes directions.

A method for producing an optical film, characterized by extruding a melt containing a cellulose ester resin from a casting die to thereby form a long length cellulose ester film at a draw ratio of 5 to 30, slitting both sides of the long length cellulose ester film and winding the same in roll form, and while unrolling the long length cellulose ester film from the roll, carrying out continuous coating of the surface hereof with an optical function layer.