Abstract: In a projection type image display apparatus, a projector optical unit for projecting an image onto a screen while magnifying a size of the image to be projected with respect to an original size of the image displayed by an image forming element, has a group of lenses for magnifying the size of the image with respect to the original size thereof, and an optical path extending from the image forming element to the screen to transmit the image along the optical path.

Abstract: An image projection module within a housing is operative for causing selected pixels in a raster pattern to be illuminated to produce an image on a display screen of VGA quality. The screen is provided with an array of lenslets to reduce speckle noise in the image.

Abstract: A dual display system includes a graphic article providing a first display in a first lighting condition (such as daylight) and a projection system providing a second display in a second lighting condition (such as nighttime). In an exemplary embodiment, the graphic article is a perforated imaged film and the projection system includes a projector and a diffuser screen.

Abstract: A Fresnel lens sheet comprising a Fresnel lens substrate and a Fresnel lens, whose surface of the light source side has an average pitch of 200 ?m or smaller and ten point roughness of 3 to 15 ?m, a rear projection screen obtained by assembling the Fresnel lens sheet and a lenticular lens sheet, and a process for producing these. With the use of the Fresnel lens sheet and the rear projection screen in accordance with the present invention, a labyrinth light inside the screen and a surface reflection are diffused effectively and a ghost caused by them is remarkably reduced. Accordingly, the rear projection television employing the Fresnel lens sheet and the rear projection screen of the present invention provides excellent images without ghost light.

Abstract: A screen member for a transmission screen is manufactured by a method including the steps: preparing a microlens substrate, of which the light incident face is formed with a plurality of microlenses; forming a black matrix from a first layer, made by applying a material including a positive photopolymer onto the light emission face of the microlens substrate, on the light emission face of the microlens substrate so that the black matrix has a plurality of openings on light paths of the light that has been transmitted by the microlenses of the microlens substrate; and forming a plurality of light diffusion portions for diffusing the light that has been transmitted by each microlens of the microlens substrate from a second layer, made by applying a material including a negative photopolymer onto the black matrix.

Abstract: Images are projected onto a projection medium including a screen, which forms an open, light-penetrable structure having a plurality of light-reflecting surface parts. The projection medium may include a screen that is perforated or net-like, such as tulle or bridal veil, or that includes transparent and opaque or light-reflecting areas. The projection screen may be positioned within a shop or another room having a show window or display window spaced from the screen. A control device, such as a touch screen, for controlling the operation of the projector, may be positioned so as to be accessible to a viewer outside the room.

Abstract: A film for a screen has a light transmitting substrate and a plurality of structures disposed on the substrate. An optical material at least partially fills cavities between the structures. A method of forming a film includes providing a light transmitting substrate having a plurality of structures disposed thereon and at least partially filling the cavities therebetween with an optical material.

Abstract: A transmissive screen is provided that controls moire pattern occurrence to prevent the degradation of image quality. The transmissive screen includes a Fresnel lens sheet having a Fresnel lens unit and a microlens array sheet having a microlens unit that are placed opposite to each other. Projected images enter from one side of the screen and are displayed on the other side of the screen, assuming that the lens pitch on one side of the microlens unit is P, the lens pitch of the Fresnel lens unit is Pf, and the pixel-frame pitch projected on the screen is Pb, the following expressions are satisfied: P?Pb·Pf/(Pb+Pf); P?Pb·Pf/2×(Pb+Pf); and P?Pb·Pf/2×(Pb?Pf).

Abstract: A light diffusion sheet or film including a plurality of unit lenses formed of a material having a refractive index N1, each unit lens having a trapezoidal cross-section. At least one between lens portion, having a triangular cross-section, positioned between two of the unit lenses. The between lens portion is formed of a material having a refractive index N2 that is less than N1. If ? represents an angle defined by a side of the trapezoidal cross-section and a line normal to a base of the trapezoidal cross-section, then sin(90??)>N2/N1 and N1<1/sin(2?).

Abstract: A system and method for providing biosynchronized therapy to a patient that creates a therapeutic environment and therapeutic stimulations that are sensitive to psychological and sensory human issues, including those particular to the patient, and that reduce psychological stress experienced by the patient so that other forms of treatment provided to the patient are enhanced and benefited. In one embodiment, the environment and stimulations can be predetermined. The therapy is applied using an overhead system that includes a suspended, multi-function that performs predetermined tasks and a lighting system, both of which provide the room with natural ambient light, artificial ambient light and predetermined task lighting. An image display system is also included for applying preselected images to the canopy over a bed of the patient. The overhead system can be used in a variety of circumstances such as a home, commercial facilities and health care facilities.

Abstract: A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.

Abstract: A liquid crystal display apparatus including: a liquid crystal display element having a liquid crystal layer between a couple of substrates; a backlight apparatus arranged at one side of the couple of substrates; a polarizer arranged between the liquid crystal display element and the backlight apparatus; a luminous intensity distribution control element arranged at the other side of the couple of substrates; an analyzer arranged between the liquid crystal display element and the luminous intensity distribution control element, wherein the luminous intensity distribution control element comprises a transparent base member, a plural lenses arranged on the transparent base member, and a light absorbing layer having small opening portions substantially at focal positions of an individual lens of the plural lenses, and the transparent base member is constituted of a transparent body substantially optically isotropic or a transparent body having uniaxial optical anisotropy.

Abstract: The present invention provides an excellent transmissive screen allowing a well-balanced increase in the vertical, horizontal, and oblique viewing angle characteristics for enhancing the viewing angle characteristics, and a rear projector including the transmissive screen. A transmissive screen can include a Fresnel lens portion having Fresnel lens components on its light-exiting surface, and a microlens array portion disposed at the light-exiting surface side of the Fresnel lens portion and having many microlenses on its light-incident surface. The microlenses of the microlens array portion are arrayed vertically and horizontally such that adjacent microlenses have common sides and the microlens array portion is rotated by 45°.

Abstract: The invention relates to a projection screen and a projection type display device, wherein projection light projected through a single projector is intensively diffused into at least two areas of view, each having a relatively narrow extent, so that the same image can be simultaneously viewed with both eyes or by at least two viewers. The projection screen 1 comprises a plurality of Fresnel concave mirrors 2L and 2R superposed on the same substrate in a mutually decentered fashion, and a diffusing plate is located on the side of the projection screen 1 on which projection light is incident or at which projection light is reflected.

Abstract: An image display system includes a light valve 14 for providing image information to light converged by a converging lens 13 and for emitting the light, a projective optical system 20 including a refractive optical lens 21 for projecting the light from the light valve 14 and a convex mirror 22 for reflecting the light from the refractive optical lens 21 by using a reflecting surface thereof having negative power and for enlarging and projecting the reflected light, and a display 30 for receiving the light from the projective optical system 20 by way of a receiving surface 30A, wherein the light valve is placed away from an optical axis 23 of the projective optical system 20 and between a front surface of the display 30 and a rear surface of the projective optical system 20.

Abstract: Provided herein is a rear projection screen capable of displaying a sharper image by reducing deterioration in the image quality, such as coarsening, flickering and glaring. A rear projection screen 10 comprises a Fresnel lens sheet 11 having, on its light-entering-side surface, a Fresnel lens part 11a in the shape of a Fresnel lens. In the Fresnel lens sheet 11, both the Fresnel lens part 11a and a part (diffusing part 11b) situated on the light-emerging side of the Fresnel lens part 11a comprise light-diffusing particles P. The mean particle diameter of the light-diffusing particles P contained in the diffusing part 11b is not more than ? of the lens pitch of the Fresnel lens part 11a.

Abstract: An optical material includes an adhesive formed from perfluoroalkylsulfonamidoethyl acrylate, aliphatic urethane acrylate oligomer and acrylate monomer. A film can include a first layer, a second layer disposed on the first layer and a polymerized composition disposed between the first and second layers and attaching the first layer to the second layer, the composition including perfluoroalkylsulfonamidoethyl acrylate, aliphatic urethane acrylate oligomer and acrylate monomer. A film can include a substrate and a plurality of structures disposed on the substrate, each of the structures formed by polymerizing a composition including perfluoroalkylsulfonamidoethyl acrylate, aliphatic urethane acrylate oligomer and acrylate monomer.

Abstract: An object of the invention is to provide a rear projection screen that has a high contrast and produces high-quality images. The object is achieved by a rear projection screen and rear projection display apparatus having the same. This rear projection screen contains a vertical lenticular lens sheet on the viewer side, and the vertical lenticular lens sheet includes a lenticular lens capable of vertically refracting the incident light on its incident surface, black stripes in the vicinity of the focus of the lenticular lens in portions where the incident light does not pass through, and a flat surface on its viewer side.

Abstract: A display system is provided that includes a light source configured to project an image, and a display surface configured to receive the projected image and at least partially compensate for a non-ideal spectral power distribution exhibited by the light source.

Abstract: A display system includes a single image-projection device, and a reflective surface optically coupled to the image-projection device, wherein the reflective surface is configured to reflect a plurality of images projected by the image-projection device onto a plurality of display surfaces, the projection being along a same path as a collection of the plurality of images.

Abstract: An inflatable device that includes at least one display panel for displaying an image by a multimedia device positioned in and/or connected to the inflatable device.

Abstract: A Fresnel lens has a plurality of pitch areas in which a plurality of hybrid type prism portions are arranged. Each hybrid type prism portion has a refraction type prism portion and a total reflection type prism portion. In the refraction type prism portion, a ray of incident light Li1 of an incident angle “a” is refracted twice and goes out as a ray of outgoing light Lo1 of an outgoing angle “f”. In the total reflection type prism portion, a ray of incident light Li2 of the incident angle “a” is refracted, totally reflected and refracted in that order and goes out as a ray of outgoing light Lo2 parallel to the ray of outgoing light Lo1.

Abstract: Apparatus for displaying an image, including a receiver for receiving data having the location of a first object and for receiving data having the location of a second object. A display is configured for displaying first and second images, and a directing device is configured for directing the first image towards the location of the first object and for directing the second image towards the location of the second object.

Abstract: Aspects of the invention provide a screen or the like that enables a bright, homogeneous projection image to be observed in a wide range across an area where viewers are present. A screen having a micro-lens array formed of a plurality of micro-lens elements each having a first surface having a curvature and a second surface of an almost planar shape through which incident light that comes incident on the first surface can be transmitted.

Abstract: A display has a screen which incorporates a light modulator. The screen may be a front projection screen or a rear-projection screen. Elements of the light modulator may be controlled to adjust the intensity of light emanating from corresponding areas on the screen. The display may provide a high dynamic range.

Abstract: A Fresnel lens for a display device is provided. The Fresnel lens includes a first sloped surface angled to receive input light, a second sloped surface facing the first sloped surface, and a valley floor linking the first sloped surface to the second sloped surface. The valley floor may be configured to scatter stray light reflected from the first sloped surface.

Abstract: An optical projection display member includes an optical focusing structure, an optical panel, and a light-absorbing layer. The optical focusing structure has a plurality of micro-optical focusing components. The light-absorbing layer is located between the optical focusing structure and the optics panel. The light-absorbing layer has a plurality of optical transmitting windows corresponding with the micro-optical focusing components. The optical transmitting windows are formed by an optical exposure-developing step.

Abstract: A plurality of reflecting mirrors (322) extending in the vertical direction of a screen are provided in parallel as appropriate between a light incident surface and a light exiting surface. The reflecting mirrors (322) each have a shape of parabolic cylinder, for condensing light on substantially one line. Light rays (L2) are reflected from a concave mirror part on the inner surface of one of the reflecting mirrors (322), and are reflected again from a convex mirror part of an adjacent one of the reflecting mirrors (322), to be emitted to the outside. Being reflected from the inner surface of one of the reflecting mirrors (322), the light rays (L2) are condensed on a predetermined focal point (FP1), and are then emitted while diffusing. Thus obtained is a diffuser panel for a rear projection screen capable of contributing to improved clarity of images.

Abstract: A total reflecting prism portion is formed on an image generation source side of a Fresnel lens sheet which constitutes a rear projection type screen. The total reflecting prism portion is formed in an area in which the angle of incidence of a projection image projected from an optical part on the Fresnel lens sheet is at least about 40·. The total reflecting prism portion causes incident light to be outputted as output light at a predetermined output angle by a total reflection phenomenon after a first refraction phenomenon. A refracting prism portion is formed on an image monitoring side of the Fresnel lens sheet. The refracting prism portion is formed in an area opposed to the portion where the total reflecting prism portion is not formed. The refracting prism portion causes incident light to be outputted as output light at a predetermined output angle by a second refraction phenomenon.

Abstract: The invention concerns a screen wherein elements distributed on a single and common diopter enable both collimating and micro-focusing by relecting the light beams projected on said screen; on said diopter can also be distributed elements acting by refraction. The inventive screen has only one main optical component, hence it is not expensive to produce. The invention is particularly applicable to very compact projection devices and to situations with high projection incidence angles.

Abstract: The ultra-thin rear projection display device described herein includes a lens system and one or more planar mirrors that are parallel to a screen on which an image is to be displayed. The screen may be a Fresnel lens having a plurality of bumps on the output surface to reduce the visibility of a stray light image. The Fresnel lens may have a diffusion layer on the output side of the Fresnel lens.

Abstract: A rear projection display device is provided. In an embodiment, the display device includes a laminate screen including a Fresnel lens lamina having a non-planar input surface, a substantially planar output surface and a first index of refraction. The laminate screen further may include a diffusion screen lamina having a substantially planar input surface, an output surface and a second index of refraction. The diffusion screen lamina may be in optical communication with the Fresnel lens lamina. Moreover, the planar output surface of the Fresnel lens lamina and the planar input surface of the diffusion screen lamina may be in facing relationship.

Abstract: A rear projection type projector is provided. An optic axis of modulated light to be projected to a screen projection surface is slanted to a normal N-N of the screen projection surface and projected to a trapezoidal range ABCD housing the actual projection range EFGH. A reflector is disposed in the rear of the screen projection surface, a projection unit projecting modulated light is placed on a side of the screen projection surface, and the modulated light is projected towards the rear, and then reflected at the reflector. Further, image information is corrected and a distortion-free image is projected.

Abstract: A transmission screen has a refraction total reflection Fresnel lens plate, a stray light eliminating plate, and an image display plate. The stray light eliminating plate has a condensing lens array and black stripes. The array has unit lenses arranged at an incident plane of the transparent substrate in a periodic structure in an up-and-down direction. The black stripes have transparent sections placed near condensing light points of the unit lens and opaque sections around the condensing light points of the unit lenses. The sections are alternately arranged at the outgoing plane of the transmission substrate in a periodic structure in an up-and-down direction. The image display plate has lenticular lenses in which unit lenses are arranged in a periodic structure in a horizontal direction at an incident plane of the transmission substrate of a scattering characteristic capable of scattering light fluxes.

Abstract: A transparent screen includes a refraction/total reflection plate in a form of a Fresnel lens, the refraction/total reflection plate having a sawtooth surface upon which light is incident and another surface via which the light exits, and an image formation/display plate for forming a projection image from the light that exits from the refraction/total reflection plate. Refraction slating surface portions each for refracting incident light towards the other surface of the refraction/total reflection plate, transmission slating surface portions each for making incident light pass therethrough, and total reflection slating surface portions each for reflecting incident light passing through one transmission slating surface portion towards the other surface of the refraction/total reflection plate being formed concentrically on the sawtooth surface of the refraction/total reflection plate.

Abstract: A projection screen 111 comprises a total reflection prism lens 114 and a lenticular lens 115 provided on the viewer's side of the total reflection prism lens 114. The total reflection prism lens 114 has a plurality of unit prisms 113 on its back surface (the outermost plane of incidence) on which imaging light L is incident. Each unit prism 113 has an apical angle ? that corresponds to the angle between the plane of incidence 113a and the plane of total reflection 113b, and the apical angles ? of the unit prisms 113 vary with the position of each unit prism 113 on the screen plane. In particular, the unit prisms 113 have apical angles ? varying continuously from 30° to 45° so that the apical angles ? on the side distant from the center O of the concentric circles are greater than the apical angles ? on the side close to this center O.

Abstract: A rear-project video assembly with a foldable reflector includes a housing and a screen mounted in a first side of the housing. A reflector has one side pivotally connected to a second side of the housing for reflecting image to the screen. An overhead projector is mounted on a bottom of the housing for projecting image to the reflector and a drive device is mounted between the screen and the reflector for expanding the reflector when using the reflector and backward moving the reflector after using the reflector to reduce the volume of the rear-project video assembly. A bellows is mounted between the peripheries of the second side of the housing and the reflector to prevent the foreign matter and the light ray from entering the housing.

Abstract: A rear-projection screen that has at least one light-scattering polymethyl methacrylate layer in which is embedded spherical plastic particles; the previously described rear-project screen that has an additional plastic sheet that does not have embedded scattering beads; and a method of making a rear-projection screen.

Abstract: A screen for a projection display is provided. The screen includes a Fresnel lens sheet which converges light emitted from a light source, and a lenticular lens sheet which disperses in a horizontal direction the light transmitted by the Fresnel lens sheet. The Fresnel lens sheet includes a first Fresnel lens on one surface and a second Fresnel lens on an opposite surface.

Abstract: In the present invention, there is disclosed a reflective mirror whose contrast or resolution performance is equal to that of a surface mirror of a glass mirror for general use and which does not have any problem in reliability of resistance to environment and whose color shift or brightness performance is inhibited from being degraded. For this, in the present invention, a reflective film is formed on a glass substrate by use of silver mirror reaction, and a topcoat is formed of a colorless/transparent resin. At this time, a wavelength of a crest of a ripple indicated by a reflectance characteristic is constituted to substantially agree with that of a green luminescent line. Accordingly, a back projection type video display device which is satisfactory in the contrast or resolution performance can be prepared.

Abstract: An assembled housing of rear projection television comprising a foldable main framework and a foldable back cover is disclosed. The main framework is a flat structure as folded, while the main framework forms a ring structure as unfolded. The ring structure includes a front opening and a back opening, while the back cover is positioned in the back opening to form a chamber. The foldable design of the housing facilitates the users and the vendors to assemble the rear projection television, and also reduce the hardware space occupied by the housing, so as to reduce the cost of transportation compared to a traditional rear projection television.

Abstract: A composition having at least about 10 percent perfluoroalkylsulfonamideoethyl acrylate; at least about 5 percent aliphatic urethane acrylate oligomer; at least about 1 percent acrylate monomer; and less than about 84 percent other reactive and non-reactive components. The composition, with the addiction of a light absorbing pigment, is particularly useful as a light absorbing adhesive in an optical element such as a rear projection screen that incorporates totally internally reflecting structures to disperse the light passing through the screen.

Abstract: To provide a rear-projection type screen in which, without the need for a tape-attachment operation on the outer circumferential part of the lens sheets, the top of the Fresnel lens can be prevented from being pared by the abrasion caused by the vibration during transportation. A rear-projection type screen according to the present invention is configured from two or more overlapping sheet-like members such as a Lenticular lens sheet 1 and Fresnel lens sheet 2, in which a fixing protrusion 3 is integrally formed in the sheet-like members in such way that neither of the two sheet-like members is displaced from the state in which the two sheet-like members overlap. A protrusion, used to attach the rear-projection type screen to the main body of a rear-projection-type image display apparatus or the screen frame, may be integrally formed in the sheet-like members from which the rear-projection type screen is configured.

Abstract: Optical properties of a screen on which an image is being projected are considered. A patterned surface is given a predetermined pattern of color pixels whereby a degree of wavelength selectivity is employed to improve the color qualities of the projected image. A system is provided wherein there is a matching of emission characteristics of a projector to the screen's reflective characteristics.

Abstract: A modular and scalable seamless tiled display apparatus includes multiple display devices, a screen, and multiple lens assemblies. Each display device is subdivided into multiple sections, and each section is configured to display a sectional image. One of the lens assemblies is optically coupled to each of the sections of each of the display devices to project the sectional image displayed on that section onto the screen. The multiple lens assemblies are configured to merge the projected sectional images to form a single tiled image. The projected sectional images may be merged on the screen by magnifying and shifting the images in an appropriate manner. The magnification and shifting of these images eliminates any visual effect on the tiled display that may result from dead-band regions defined between each pair of adjacent sections on each display device, and due to gaps between multiple display devices.

Abstract: A screen for allowing light generated by a light source and modulated by a picture display device having pixels laid out to form a matrix to produce an image thereon to be projected on the screen as an enlarged picture. The screen has a Fresnel lens sheet forming Fresnel lenses at an emission side, a first member for receiving light emitted from the Fresnel lens sheet having light passing windows, and a plurality of light absorbing layers and a second member placed on the emission side of the first member. A pitch of the light absorbing layers is made smaller than a pitch in a first direction of pixels projected and enlarged on the screen, and a pitch in a second direction of the pixels is at least twice of a pitch of the Fresnel lenses.

Abstract: A display device projects an image alternatively onto a remote surface and a rear projection screen. The display device has a base, a projector, a rear projection screen, and a mirrored surface. The projector is affixed to the base. The rear projection screen is mounted on the base. The housing extends rearward of the rear projection screen and has an opening formed therein. The mirrored surface is angled to reflect light from the projector onto the rear projection screen. The rear projection screen and the housing are pivotal on the base. In one position, the projector is exposed for projection onto the remote surface. In another position, the projector is engaged within the opening for projection through the opening at the mirrored surface.

Abstract: In a rear projection type projector device, a transparent plate-like member is supported so as to incline from a vertical surface, and a lenticular screen and a Fresnel lens are placed on the transparent plate-like member. Accordingly, the lenticular lens and the Fresnel lens are in tight contact with the front plate owing to their own weight, and this makes it unlikely to create spaces between these components.

Abstract: A rear projection display system is disclosed. The display system includes an image source for projecting an image, a rear reflector, and a screen configured to display the projected image. The screen includes a plurality of reflective elements configured to angularly discriminate light without regard to polarity by reflecting light incident on the screen from a first angle toward the rear reflector, and to allow light incident on the screen from a second angle to be transmitted through the screen for display.

Abstract: A diffusion sheet for use in a transmission-type screen comprising a main diffusion layer having an incidence surface and an emergence surface which are parallel to each other. A plurality of groove channels each having a substantially V-shaped cross-section are disposed in parallel on the main diffusion layer. A region sandwiched between the adjacent two groove channels provides a rib with a substantially trapezoidal cross-section. The light substantially perpendicularly incident on the incidence surface is reflected on side surfaces of the rib. An assisting diffusion layer is disposed on the side of the emergence surface of the main diffusion layer, or on both sides of the emergence surface and the incidence surface of the main diffusion layer. The light diffusion component of the assisting diffusion layer is adjusted such that a gain curve of an emergent light from the diffusion sheet has no minimal point.