Class / Patent application number | Description | Number of patent applications / Date published |
359452000 | Embedded particles | 22 |
20090190210 | Polarization preserving front projection sceen - Polarization preserving front projection screens and diffusers provide optimum polarization preservation for stereoscopic 3D viewing, as well as improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed screens direct light from a projector toward viewers within a diffusion locus, while maintaining optimum gain characteristics. More specifically, light incident on a region of the front projection screen from a predetermined projection direction is reflected by an engineered surface to a predetermined diffusion locus after undergoing substantially single reflections. The engineered surface, comprised of generating kernels, is used to optimally diffuse illumination light into a range of viewing angles, within the diffusion locus, with suitable gain profile, while optimally preserving polarization for 3D applications. Such a screen, when combined with matched polarization analyzing eyewear, provides extremely low cross-talk from any observation point. | 07-30-2009 |
20100103515 | REFLECTIVE SCREEN AND MANUFACTURING METHOD THEREOF - Provided is a reflective screen. The reflective screen can be widely and commercially used, easily manufactured at low costs, and realize a sufficient reflection image. The reflective screen includes a substrate, a light diffusion layer in front of the substrate, a light reflecting material reflecting projection light, a light absorbing material absorbing external light, and a light absorption reflection layer containing at least the light reflecting material and the light absorbing material together. The light absorption reflection layer being disposed in the rear of the substrate. | 04-29-2010 |
20100118397 | Reduced Laser Speckle Projection Screen - A projection screen reduces laser speckle. Cells having non-zero volume are arranged on the projection screen so as to receive laser light. The cells are at least partially filled with a light scattering media. The laser light enters the cells and is spatially scattered. The light emerging from the cells includes many phase fronts with a more random polarization state. Speckle is reduced as a result. The cells are oriented to reduce lateral movement of light from one cell to another, thereby reducing blooming that would otherwise occur. | 05-13-2010 |
20100165458 | REFLECTIVE TYPE SCREEN USING A SPACER LAYER - A reflective type screen using a spacer layer and that includes a light blocking layer blocking an incident light, a reflective layer formed on the light blocking layer to reflect the incident light, a diffusion layer formed on the reflective layer to diffuse the incident light, and at least one spacer layer formed between the reflective layer and the diffusion layer to have a refractive index differing from that of an adjacent layer to refract the incident light. | 07-01-2010 |
20100195201 | SCREEN - A screen according to the present invention includes: a retroreflective layer, which has a front side and a rear side with an array of corner cubes; a low-refractive-index layer, which is made of a substance with a lower refractive index than the retroreflective layer; and a light absorbing layer for absorbing at least a part of the light that has been incident on the retroreflective layer on the front side thereof and then directed toward the low-refractive-index layer through the rear side thereof. In one embodiment, at least a portion of the light absorbing layer faces the array of corner cubes of the retroreflective layer with the low-refractive-index layer interposed between itself and the retroreflective layer. | 08-05-2010 |
20110149389 | Polarization preserving projection screen with engineered particle and method for making same - Polarization preserving projection screens provide optimum polarization preservation for | 06-23-2011 |
20110149390 | Polarization preserving projection screen with engineered pigment and method for making same - Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises stripping an optically functional material from a carrier substrate, thus creating engineered particles from the optically functional material. The engineered particles may then be deposited on a second substrate to create a substantially homogeneous optical appearance of the projection screen. | 06-23-2011 |
20120008201 | PROJECTION SCREEN AND MANUFACTURING METHOD THEREOF - A projection screen includes a base sheet, a surface roughness structure, a reflective layer, and a light absorption layer. The base sheet has a first side and a second side opposite to the first side. A plurality of first surfaces and second surfaces are formed on the first side, each first surface faces an optical projection system, and each second surface is disposed between two adjacent first surfaces and forms an angle with respect to a neighboring first surface. The surface roughness structure is formed on at least the first surfaces and capable of diffusing a light beam to a limited extent. The reflective layer is formed on the surface roughness structure and capable of reflecting most of the light beam diffused by the surface roughness structure to a limited extent towards a limited viewing cone, and the light absorption layer is formed on the second surfaces. | 01-12-2012 |
20130003175 | SCREEN - A screen includes a polarization layer having plural acicular particles provided with their major axes oriented nearly in the same direction on a substrate, and has polarization selectivity of reflecting light in one polarization direction and absorbing light in the other polarization direction of two polarization directions orthogonal to each other on a plane perpendicular to incident light. | 01-03-2013 |
20130301122 | Polarization preserving projection screen with engineered pigment and method for making same - Polarization preserving projection screens provide optimum polarization preservation for 3D viewing. The projection screens additionally provide improved light control for enhanced brightness, uniformity, and contrast for both 2D and 3D systems. Generally, the disclosed method for providing a projection screen comprises stripping an optically functional material from a carrier substrate, thus creating engineered particles from the optically functional material. The engineered particles may then be deposited on a second substrate to create a substantially homogeneous optical appearance of the projection screen. | 11-14-2013 |
20160004150 | PROJECTION SCREEN AND MANUFACTURING METHOD OF PROJECTION SCREEN - A projection screen includes a flexible substrate, a reflective layer and a transparent coating layer. The flexible substrate has a first surface and a second surface opposite to each other. The reflective layer is disposed on the first surface of the flexible substrate. The transparent coating layer is coated on the reflective layer, and the transparent coating layer has a pattern on a surface opposite to the reflective layer. Moreover, a manufacturing method of the projection screen is also provided. | 01-07-2016 |
359453000 | Rear projection screen | 11 |
20080304149 | DISCONTINUOUS OR VARIABLE THICKNESS GAIN MODIFICATION COATING FOR PROJECTION FILM AND METHOD FOR MAKING SAME - The present invention relates to projection films and methods of making the same. In particular, the present invention relates to a projection film whereby the microspheres exhibit improved alignment on the light exit surface and have alignment on the light entrance surface that varies according to the individual microsphere diameter. In another embodiment, the present invention relates to a projection film that has the attributes of variable gain within the single projection film. In another embodiment, the present invention relates to an exposed microsphere projection film construction that provides modification of the head-on and angular pattern of light transmission (gain). | 12-11-2008 |
20090002817 | Transmission Screen - A transmission screen through which an observer can see the side of the screen opposite to the observer side, and which has a sufficient viewing angle is provided. The transmission screen is a transmission screen | 01-01-2009 |
20090091824 | Light-Diffusing Member, Transmission Type Screen, Rear-Projection-Type Display, and Light-Absorbing-Part-Forming Resin Composition - The present invention provides a light-diffusing member having no non-uniformity in stripes. The light-diffusing member according to the present invention is for diffusing at least a part of transmitted light by totally reflecting the same. The light-diffusing member comprises a light-diffusing part that has a diffusing-part base having a plurality of grooves tapered down toward the incident side, formed on the light-outgoing side in juxtaposition with one another, and light-absorbing parts formed, in the grooves in the diffusing-part base, by a radiation-curing resin composition. The radiation-curing resin composition includes colored particles. The colored particles have a mean particle diameter of 3.5 μm or more and 20 μm or less. | 04-09-2009 |
20090316261 | MULTI-LAYER SCREEN COMPOSITES - The invention relates to multi-layer composites for use as a screen, having at least three layers, with an inner diffusing layer and at least one substrate layer on either side. The diffusing layer contains small particles having a narrow particle size distribution that are refractive-index mismatched with the polymer matrix. The multi-layer acrylic composition is useful as a projection screen. | 12-24-2009 |
20100202045 | DISCONTINUOUS OR VARIABLE THICKNESS GAIN MODIFICATION COATING FOR PROJECTION FILM AND METHOD FOR MAKING SAME - The present invention relates to projection films and methods of making the same. In particular, the present invention relates to a projection film whereby the microspheres exhibit improved alignment on the light exit surface and have alignment on the light entrance surface that varies according to the individual microsphere diameter. In another embodiment, the present invention relates to a projection film that has the attributes of variable gain within the single projection film. In another embodiment, the present invention relates to an exposed microsphere projection film construction that provides modification of the head-on and angular pattern of light transmission (gain). | 08-12-2010 |
20110002036 | Rear-Projection Screen - The present invention is directed to a rear-projection screen which encompasses 1) a flexible light-diffusive first film having a substantially smooth first surface and an opposing substantially smooth second surface, and comprising a wax-free amorphous thermoplastic matrix having a plurality of light-diffusing particles dispersed therein and which is lens-free; and 2) an opposing flexible light-absorption second film having a first surface and an opposing second surface, and comprising a thermoplastic matrix having a plurality of light-absorbing particles dispersed therein, wherein the first and second films are adapted to be 3) bonded together in direct contact with each other and then, affixed as a laminate to one or more transparent rigid substrates or 4) affixed individually to a transparent rigid substrate. | 01-06-2011 |
20120099192 | WINDOW IMAGE PROJECTION SCREEN - A window image projection screen includes a transparent case, including a transparent front element and a transparent rear element. A thin inner space formed between the front and rear elements is filled with fine water drops produced by ultrasonic vibration of water in a reservoir to selectively crease a screen for a projected image. | 04-26-2012 |
20130215503 | REAR-PROJECTION SCREEN FOR ULTRA SHORT THROW PROJECTOR - A rear-projection screen for an ultra short throw projector includes a diffusing member to diffuse incident light having a specific angular range (AR) corresponding to a hotspot area generated on the rear-projection screen, and to transmit incident light having an angular range other than the specific angular range (AR). The diffusing member is provided at an area of the rear-projection screen where light having smaller incidence angle with respect to the rear-projection screen strikes the rear-projection screen. | 08-22-2013 |
20140153090 | PROJECTION SYSTEM - The present application provides a projection system by which constraints placed on space use of a user can be reduced. The projection system includes: a projector and a screen. The screen includes a first film for transmitting image light incoming from the projector and a second film for transmitting the image light transmitted through the first film. A pattern for refracting or reflecting the image light toward the second film is formed on a light entrance face of the first film receiving the image light. The incident angle of the image light entering the first film is not less than 20 degrees. | 06-05-2014 |
20140240825 | SCREEN - The invention realizes a screen in which the luminous intensity of scattered light emitted from the screen is made more uniform. The screen diffuses incident light that is irradiated from an incident surface and emits light from an emission surface that is opposite the incident surface. The screen is provided with: a first light-diffusing area ( | 08-28-2014 |
20150355536 | REAR-PROJECTION FILM HAVING A "DAY/NIGHT" EFFECT - The present invention relates to rear-projection film with “day/night” effect comprising at least two layers, where the film comprises at least one grey layer comprising at least one thermoplastic with transmittance of from 10% to 70% in the visible wavelength range and at least one layer comprising at least one thermoplastic and scattering particles, and also to the use of the said films as rear-projection areas in the vehicle interior sector. | 12-10-2015 |