Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 8023185 | Transmission screen for stereoscopic images A transmission type screen for stereoscopic images having a transmission layer includes an incident surface having a gloss surface, a transmission layer having a refractive index less than 1.55, a transmissivity more than 60%, and an imaging surface having surface p... | 09/20/2011 |
| 7835079 | Micro-structure based screen system for use in rear projection array display systems The viewing angle brightness sensitivity typically encountered in tiled rear projection display systems cannot be solely overcome by edge blending and calibration techniques. The rear projection array display-screen system of this invention, being comprised of a mic... | 11/16/2010 |
| 7626761 | Fly's-eye lens sheet having light-shielding layer, method for fabricating the same, transmissive screen, and rear projection image display device A fly's-eye lens sheet having a light-shielding layer includes a fly's-eye lens sheet body provided with fly's-eye lenses on one principal surface thereof, the light-shielding layer provided on the other principal surface of the fly's-eye lens sheet body, and a phot... | 12/01/2009 |
| 7436593 | Screen, fresnel lens sheet used therefor, and image display apparatus using the same Images that are bright even on the periphery of a transmissive screen are obtained by reducing reflection loss of the screen when the screen incident angle of the image light entering the upper left and right ends of the screen increases. Incident-side prisms (10... | 10/14/2008 |
| 7425071 | Video display device and decoration display body An image display apparatus that can display three-dimensional-like images having a superior visual effect in a simple manner is provided. This image display apparatus is constituted by a projector 20 and a decorative display unit 10 comprising a light ... | 09/16/2008 |
| 7417795 | Projector screen for image projection The invention relates to a projector screen for image projection, comprising a transparent support (16) which fixes the screen shape and a light-scattering layer, which covers at least one defined projection surface within the screen shape, whereby, in order ... | 08/26/2008 |
| 7408708 | Diffusing sheet, surface light source unit, and transmission type display A diffusing sheet, a surface light source unit, and a transmission type display that can attain uniform illumination so that the brightness of light on the display screen appears uniform regardless of the position from which the display screen is observed. The diffu... | 08/05/2008 |
| 7403334 | Optical member and process of producing the same The present invention provides an optical member having excellent anti-reflection properties, capable of being produced inexpensively as compared with conventional optical members having anti-reflection properties and of being mass-produced with quality kept constan... | 07/22/2008 |
| 7391568 | Luminous intensity distribution control device and display having the same A liquid crystal display apparatus including: a liquid crystal display element having a liquid crystal layer; a backlight apparatus arranged at one side of the couple of substrates of the liquid crystal display element; a polarizer arranged between the liquid crysta... | 06/24/2008 |
| 7382534 | Screen and projector with spherical lens array A screen includes a lens array having a plurality of spherical lens elements. A first length of the spherical lens elements, along a first direction at substantially a center of each of respective spherical lens elements, and a second length of the spherical lens el... | 06/03/2008 |
| 7379240 | Rear projection-type screen and rear projection-type image display device A rear projection-type screen includes two sheet-like members having lenses prevented from being deformed and scratched. In the rear projection-type screen (5) for passing and focusing image light L emitted from an image light source (3), two sheet-lik... | 05/27/2008 |
| 7375884 | Rear projection screen and optical device thereof A rear-projection screen comprises an optical unit, a light-blocking layer, and an optical lens. The optical unit has a first surface and a second surface. The first surface is opposite to the second surface. The first surface has a plurality of cylindrical convexes... | 05/20/2008 |
| 7369311 | Lens sheets for rear projection screens A lens sheet for use as a Fresnel lens sheet or a lenticular lens sheet of rear projection screens, which includes a plastic substrate and a lens element disposed on the plastic substrate. The plastic substrate includes at least a first surface layer, an intermediat... | 05/06/2008 |
| 7362493 | Micromirror and post arrangements on substrates A micromirror of a micromirror array of a spatial light modulator used in display systems comprises a mirror plate attached to a hinge that is supported by two posts formed on a substrate. Also the mirror plate is operable to rotate along a rotation axis that is par... | 04/22/2008 |
| 7359596 | Micro lens array and a method of manufacturing a replication mold for the same The micro-lens array in which a plural of convexly-protruded micro-lens are closely arranged two-dimensionally and a plural of convex sub-lenses having a curvature-radius smaller than that of the micro-lens are protrusively formed on the surface of each micro-lens h... | 04/15/2008 |
| 7356211 | Lighting system A stereoscopic display device is provided. The stereoscopic display device includes an optical waveguide member and a first main surface and a second main surface. The first and second main surfaces face each other. A first light path changing member is provided on ... | 04/08/2008 |
| 7349159 | Mold for manufacturing a microlens substrate, a method of manufacturing microlens substrate, a microlens substrate, a transmission screen, and a rear projection A mold 6 for manufacturing a microlens substrate 1 is disclosed. The microlens substrate is provided with a plurality of microlenses each having a predetermined convex shape. The mold is used to press a base material of the microlens substrate to form ... | 03/25/2008 |
| 7338754 | Micro-lens array substrate and production method therefor, and projection type liquid crystal display unit using those In a micro-lens array substrate (12) that includes first and second micro-lens arrays (6, 7) respectively having a plurality of lenses, the first micro-lens array (6) is sandwiched between two inorganic dielectric substrates (21, 24), and... | 03/04/2008 |
| 7338984 | Resin composition containing ultrafine inorganic particle By providing a composition in which refractive index can be controlled, and scratch resistivity and adhesion (especially adhesion to a resin having a thiourethane bond or epithiosulfide bond) are excellent when the composition is coated on a base material such as a ... | 03/04/2008 |
| 7330311 | Transmission type screen having directional light scattering lens and fresnel lens There is provided a transmission type screen having a directional light scattering lens and a fresnel lens, wherein the fresnel lens has contact portions that contact with the directional light scattering lens and non-contact portions which are provided between the ... | 02/12/2008 |
| 7319242 | Substrate with recess portion for microlens, microlens substrate, transmissive screen, rear type projector, and method of manufacturing substrate with recess portion for microlens A microlens substrate is provided having a plurality of first microlenses and a plurality of second microlenses which are located between the plurality of first microlenses. The second microlenses are smaller than the first microlenses. ... | 01/15/2008 |
| 7317572 | Fresnel lens sheet, rear projection screen and rear projection display There is provided a Fresnel lens sheet for converging light rays fallen thereon from oblique directions, and capable of reducing the reflection of external light, of enabling displaying images in satisfactory contrast, of suppressing the occurrence of moiré and of ... | 01/08/2008 |
| 7307107 | Photopolymerizable composition and use thereof A photopolymerizable composition comprising a polymerizable compound and a photopolymerization initiator, wherein the polymerizable compound is characterized by comprising (a) a bifunctional (meth)acrylic acid (thio)ester compound containing a sulfur atom in the mol... | 12/11/2007 |
| 7295369 | Fabrication method for rear-projection screen A fabrication method for a rear-projection screen includes the steps of providing a light source and a lenticular lens sheet; projecting parallel light onto the lenticular portions of a lenticular lens sheet to make one surface of the lenticular lens sheet opposite ... | 11/13/2007 |
| 7281805 | Projection-type display apparatus A thin-shaped projection-type display apparatus capable of displaying a high-quality image without causing any ghost image is provided. The projection-type display apparatus includes a screen having a prism, and a projection optical system for guiding image light to... | 10/16/2007 |
| 7277227 | Fresnel lens sheet, transmission screen provided with the same and rear projection display A Fresnel lens sheet has an entrance surface (1a) and an exit surface (1b). A plurality of prisms (2) each having a refraction surface (3) and a total-reflection surface (4) are formed on the entrance surface (1 | 10/02/2007 |
| 7271955 | Transmission screen A transmission screen is capable of preventing the reduction of contrast in images due to external light such as emitted by internal lighting fixtures. The transmission screen includes a Fresnel lens sheet having a front surface facing the viewer and provided with F... | 09/18/2007 |
| 7265909 | Lens substrate, a transmission screen and a rear projection device A lens substrate (microlens substrate 1) having a first surface and a second surface opposite to the first surface is disclosed. Light is allowed to enter the lens substrate from the first surface thereof and then exit from the second surface thereof. The len... | 09/04/2007 |
| 7262912 | Front-projection screens including reflecting layers and optically absorbing layers having apertures therein, and methods of fabricating the same A front-projection screen can include a substrate having first and second opposing sides with an array of optical microstructures on the first side of the substrate and an image reflecting layer on the second side of the substrate opposite the array of optical micro... | 08/28/2007 |
| 7262816 | Rear projection imaging system with image warping distortion correction system and associated method A rear projection imaging system with an image warping distortion correction system using a camera and processing unit to generate a warping map that corrects for image distortion. The warping map is generated in an iterative process by displaying a known pattern on... | 08/28/2007 |
| 7259912 | Fresnel lens having reduced distortions A display device for displaying images in a rear projection display device is provided. The display device may include, amongst other structure, a screen including a lens portion and a frame portion. A tensioner may be operatively associated with the screen and may ... | 08/21/2007 |
| 7256935 | Light transmission sheet, rear projection type projector, light transmission sheet manufacturing device, program, and computer-readable medium To eliminate ghosts caused by retroreflection of projected light and obtain high resolution images. Fine irregularities 5 are randomly formed on the plane of incidence 2a of a Fresnel lens sheet 2 with little space between them. Th... | 08/14/2007 |
| 7253955 | Contrast improving sheet and rear projection screen provided with the same A contrast improving sheet includes a first optical functional element and a second optical functional element on the viewing side thereof. The first optical functional element has a plurality of protrusions, each having a pair of opposite total-reflection facets fo... | 08/07/2007 |
| 7248407 | Microlens array sheet of projection screen, and method for manufacturing the same The present invention discloses a microlens array sheet of a projection screen including a lens sheet having a predetermined area, microlenses arranged on one surface of the lens sheet in the horizontal and vertical directions, a black matrix including apertures cor... | 07/24/2007 |
| 7244028 | Laser illuminated projection displays A projection video display includes at least one laser for delivering a light beam. The display includes a beam homogenizer and a condenser lens. A scanning arrangement is provided for scanning the light in beam in a particular pattern over the condenser lens in a m... | 07/17/2007 |
| 7236300 | Transmission type screen using a fly-eye lens A transmission type screen including a fly-eye lens having a convex shape on one side thereof and a light-shielding layer provided on an opposite side of a lens surface of the fly-eye lens and having a plurality of openings provided near each focus of lens unit cell... | 06/26/2007 |
| 7233445 | Method of manufacturing microlens array A positive resist layer formed on a translucent substrate is subjected to exposure and development to form circular resist patterns disposed near each other at a predetermined distance. The exposure pattern has an opening of a plurality of circular ring shape surrou... | 06/19/2007 |
| 7233439 | Screen member for a transmission screen, a transmission screen and a rear projection A screen member for a transmission screen includes: a microlens substrate, a light incident face thereof being formed with a plurality of microlenses for condensing incident light; a black matrix formed on a light emission face of the microlens substrate, which has ... | 06/19/2007 |
| 7224525 | Optically transmitting sheet and screen Disclosed are a light transmission sheet and a screen that can realize good color reproduction while suppressing a lowering in light transmittance. The light transmission sheet comprises a light diffusing sheet and/or a colored sheet. The light diffusing sheet and/o... | 05/29/2007 |
| 7224505 | Manufacturing method of electro-optical apparatus substrate, manufacturing method of electro-optical apparatus, electro-optical apparatus substrate, electro-optical apparatus, and electronic instrument A manufacturing process of an electro-optical apparatus substrate is provided wherein a substrate is coated with a photosensitive resin. A first exposure process is executed with a first reticle to form an uneven portion on the substrate. Subsequently, a second expo... | 05/29/2007 |