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Match Document Document Title
7453638 Fresnel lens sheet, rear projection screen, and rear-projection-type display  
The present invention provides a Fresnel lens sheet that scarcely makes the projected image distorted, and others. The Fresnel lens sheet has a plurality of unit total reflection Fresnel lenses...
7440186 Screen, a fresnel lens sheet used for the screen, and an image display apparatus using the screen  
The present invention provides a technology suitable for shortening a depth of a image display apparatus while obtaining a picture of high quality. According to the invention, a total reflection...
7433105 Decorative film, carton, and method of making  
A film having a Fresnel lens is placed adjacent a design to create a three-dimensional image. The film can be used separately or laminated to a substrate to create enclosures such as cartons,...
7414787 Phase contrast microscope for short wavelength radiation and imaging method  
A phase contrast x-ray microscope has a phase plate that is placed in proximity of and attached rigidly to the objective to form a composite optic. This enables easier initial and long-term...
7391580 Ultra compact mono-bloc catadioptric imaging lens  
A mono-bloc catadioptric imaging lens comprising a solid body and a single-focal Maksutov type construction characterized by two refractive surfaces and two reflective surfaces wherein all surfaces...
7365919 Forming methods, forming devices for articles having a micro-sized shape and optical elements  
A article having a micro-sized shape being formed on the surface of the article by pressing a die onto the surface, wherein the elastic modulus of the article at room temperature is in the range of...
7365918 Fast x-ray lenses and fabrication method therefor  
A fabrication process for zone plate lenses is based on controlled thin layer deposition for fabricating structures as small as 2 nanometers (nm) in width, and potentially smaller. The substrate...
7365909 Fabrication methods for micro compounds optics  
Methods for fabricating refractive element(s) and aligning the elements in a compound optic, typically to a zone plate element. The techniques are used for fabricating micro refractive, such as...
7362486 Optical scanning device with at least one resin lens for controlling a beam waist position shift  
A first optical system guides a light beam from a light source to an optical deflector, and a second optical system converges the light beam deflected by the optical deflector on a surface to be...
7342728 Fresnel lens, backprojection screen, and corresponding backprojection system and unit  
The invention relates to a Fresnel lens. Each refractive structure of the lens is bounded by two surfaces, the second surface making a second angle with the normal to the plane of incidence. At...
7339733 Fresnel lens sheet and rear projection screen using it  
A Fresnel lens sheet which is bright due to a small light quantity loss, is restricted in speckles and ghosts, does not produce moires, and can be used in an inexpensive transmitting screen,...
7310473 Optical antenna and wireless optical system using the same  
A light concentrator for an optical antenna gradually narrows from the light receiving end to the end in contact with a light detector, and has a refractive index that gradually increases from the...
7309149 Prism sheet, backlight assembly and liquid crystal display device having the same  
A prism sheet, a backlight assembly having the prism sheet, and an LCD device having the prism sheet, the prism sheet includes a first surface, a second surface and a reflecting member. A light is...
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...
7298533 Optical films for creating unique optical effects  
An optical layer comprises a sheet of material having a surface. The surface comprises a plurality of optical elements. The optical elements are comprised of microscopic patterns in the surface...
7253954 Flat valley fresnel lens  
A Fresnel lens. The Fresnel lens includes an input side configured to receive the image and an output side, opposite the input side, configured to display the image. The input side includes a first...
7251084 Fresnel lens and an illuminating device provided with the Fresnel lens  
A refractive Fresnel lens part is provided on an upper surface of a plate-like lens at a central portion. A reflective Fresnel lens part is provided on a lower surface of the plate-like lens at a...
7245439 Variable lens  
A variable lens having an optical axis is described. The lens comprises a plurality of annuli located around the optical axis. Each annulus has respective side walls defining a chamber containing a...
7245429 Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet  
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...
7242536 Fresnel optical element and projection display device  
Each of a plurality of Fresnel prisms 12 is formed so that a refracting surface 12 thereof includes a non-light incidence surface 12 c upon which any ray of light emitted from a projector 1 ...
7236313 Ring zonal phase correction lens and optical system and optical head device  
A ring zonal phase correction lens made of resin is provided with a refraction face structurally formed on at least one of a first lens face and a second lens face. The refraction face includes...
7221513 Hybrid achromatic optical lens and method for manufacturing the same  
A hybrid achromatic optical lens having a high numerical aperture whose chromatic aberration is removed and a method for manufacturing the same are provided. The hybrid achromatic optical lens...
7206142 Refractive spectrum splitting concentrator system  
A single lens for concentrating and refracting electromagnetic energy having a broad energy spectrum onto bands of a target device includes a lens having a flat top side and a plurality of regions,...
7196845 Fresnel lens sheet and rear projection screen  
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 μm or smaller and ten point roughness of 3 to 15...
7190531 Concentrating type solar collection and daylighting system within glazed building envelopes  
A Fresnel lens including a substantially polygonal focusing portion adapted to focus solar radiation to a area having the same geometry as the focusing portion of the lens. Also a solar module...
7185464 Tubular skylight for lighting rooms with natural light  
A tubular skylight for lighting rooms with natural light, comprising a tubular body with a reflective inner surface which leads into a room and has, at its external end, a natural light collector...
7167308 System for eliminating secondary images in rear projection systems  
A secondary image suppression system (SISS) for minimizing secondary ghost images in a screen assembly for a rear projection system. The secondary image suppression system includes a circular...
7167307 Projection screen, and projection type display system  
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...
7161747 One piece clear plastic cardholder, cardholder shaped fresnel magnifying lens and method of making the same  
Disclosed is a cardholder with dimensions approximating a standardized card carried by a person, the cardholder being made of a one-piece clear plastic material and may contain a viewing portion...
7158298 Rear projection screen and diffusing sheet  
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...
7151639 Thin-type spherical lens  
A thin-type spherical lens, fabricated according to the result of the virtual procedures of removing the portion of each of a plurality of lens bodies with different radii of curvature of...
7133223 Optical element, method of molding optical element, and mold  
This invention provides an optical element comprising: an optical functional section on a first surface of the optical element, the optical functional section having a fine structure; and a flange...
7126769 Thin magnifier structure with magnetic protective jacket  
A thin magnifier structure with magnetic protective jacket, including a transparent magnifying member, a magnetic jacket and a pivot member. The transparent magnifying member integrally has a...
7121275 Method of using focused acoustic waves to deliver a pharmaceutical product  
An improved method and apparatus for delivering medication to the lungs is described. Acoustic ink printing technology is modified to operate as an inhaler that generates tiny droplets near a...
7116476 Fresnel lens, screen, image displaying device, lens forming mold manufacturing method and lens manufacturing method  
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...
7113333 Screen having micro-lens array and projector  
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...
7106528 Method and apparatus for manufacturing large double-sided curved Fresnel lens  
A method of manufacturing a large double-sided curved Fresnel lens. The method includes a machining step (A) of performing ultra-precise three-dimensional machining on an upper mold and a lower...
7095558 Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet  
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...
7075718 Transparent screen and projection display apparatus  
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...
7072109 Projection screen and projection display  
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...
7061676 Rear projection screen and rear projection display apparatus  
A rear projection screen for use in a rear projection display apparatus contains a Fresnel lens sheet, a horizontal lenticular lens sheet capable of horizontally refracting the incident light, and...
7035022 Observation optical system and optical apparatus  
An observation optical system is disclosed with which the Fresnel reflection at the surfaces of optical members can be reduced, the transmittance can be improved, and the surface reflection ghost...
7023626 Optical device, lens and optical element for focusing a laser beam and apparatus and method for assembling the optical device  
The invention relates to an optical device for focusing a laser beam, comprising a source of emission of a laser beam, for example a substantially elliptic and astigmatic laser beam, a focusing...
7009775 Eyepiece optical system, and display device using the eyepiece optical system  
The invention relates to a display system wherein a Fresnel lens that forms an eyepiece optical system is curved to correct for decentration aberration, whereby a display screen can be wholly...
6989929 Fresnel lens sheet and rear projection screen including the same  
A Fresnel lens sheet includes: a sheet-shaped base; multiple first prisms with substantially triangular cross-sections formed on a light-source-side surface of the base; and multiple second prisms...
6987624 Fresnel lens sheet and rear projection screen  
A Fresnel lens sheet has a light-receiving surface and a light-emitting surface. The light-receiving surface is provided with a plurality of prism groups, each including a plurality of straight or...
6982838 Objective lens for optical pick-up  
There is provided an objective lens used for at least three types of optical discs when thicknesses are respectively represented by t 1 , t 2 and t 3 , t 1 as 0.6 mm, t 2 is 0.6 mm and t 3 is...
6970296 Signaling device for traffic signals  
A signaling device includes a light source and a Fresnel optical system. Constructed in the form of ellipses on its rear side, the Fresnel optical system has defocusing lenses that form elongated...
6961176 Fresnel lens sheet, rear projection screen and rear projection display  
A Fresnel lens sheet has an entrance surface provided with a plurality of total-reflection Fresnel lens elements. Each of the total-reflection Fresnel lens elements has a light-receiving facet and...
6958868 Motion-free tracking solar concentrator  
An integrated solar concentrator and tracker is constructed from a beam deflector for unpolarized light in combination with a fixed optical condenser. The one-dimensional beam deflector consists of...
Matches 1 - 50 out of 475 1 2 3 4 5 6 7 8 9 10 >