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7618161 |
Fresnel lens and lighting apparatus provided with the Fresnel lens
In a Fresnel lens which is made of a lens material whose refraction index is n, and focuses light beam from a light source at a specified radiation view angle φ, and has plural N pieces of...
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7616549 |
Chromatic aberration-correcting element and optical pickup device using the same
The present invention is related to a chromatic aberration-correcting element which allows the adoption of BDs even when DVD/CD light beams are incident. The chromatic aberration-correcting element...
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7599128 |
Imaging lens
An imaging lens is provided, whose lens characteristics can be switched between e.g. normal imaging and close-up imaging without requiring mechanically movable mechanism or attachment/removal of...
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7589917 |
Collimating fresnel lens with diffuser appearance
A Fresnel lens having a curved surface and a large number of Fresnel lens steps with rectangular cross sections for enhancing the aesthetics while providing a diffuser appearance. The cylindrical...
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7580204 |
Method for manufacturing lenses, in particular for an imager comprising a diaphragm
A method for manufacturing a lens of a polymer material, includes producing in the core of the lens or on the surface of the latter at least one opaque zone having an optical function, by locally...
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7580196 |
Liquid solar lens
Formed by modules ( 1 ) with bi-convex ( 2 ) configurations in the central modules ( 1 ) of the lens, becoming plano-convex and finally concavo-convex in its end modules ( 1 ), with a smooth...
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7565076 |
Lens module with grating
A lens module ( 100 ) includes a barrel ( 10 ), a lens ( 20 ), an image sensor module ( 30 ) and a grating ( 22 ). The lens is received in the barrel for focusing optical signals. The image sensor...
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7535637 |
Fresnel lens sheet, transmission type screen and rear projection type display apparatus
A rear projection type display apparatus is disclosed wherein image light reflected upon entrance thereof into a Fresnel lens sheet of the reflection type provided on a transmission type screen is...
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7531790 |
Image sensor and method for fabricating the same
An image sensor includes at least one photoelectric conversion area on a semiconductor substrate, a color filter over the photoelectric conversion area, and an apochromatic microlens over the color...
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7529039 |
Object lens device with high numerical aperture and optical pickup device adopting the same
An object lens arranged on a light proceeding path to focus light on a recording medium includes a first surface that is an incident surface on which light is incident, a second surface from which...
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7529028 |
Image display apparatus
An image display apparatus to produce an erect real image of an object in space. The image display apparatus includes a housing to accommodate the object including an opening to secure a field of...
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7529023 |
Image display, Fresnel lens and screen
In a Fresnel screen for displaying an image, comprising, a screen surface, and a reverse surface opposite to the screen surface in a thickness direction of the screen to be prevented from facing to...
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7502178 |
Multiple wavelength and multiple field of view imaging devices and methods
An imaging device consistent with one of numerous embodiments has an opaque planar sheet with a plurality of pinholes defining a photon sieve in the sheet, wherein, the photon sieve comprises at...
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7499094 |
Solid state imaging device including annular and center lens in contact with each other
Each intralayer lens disposed between a color filter 120 and photoelectric conversion sections has a Fresnel lens structure composed of a center lens 132 and an annular lens 134 . As a result,...
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7492534 |
Imaging optical system including optical element having discontinuous plane
An imaging optical system capable of moving a meridian image plane further closer to an ideal imaging plane vertical to an optical axis with the number of lenses kept constant. At least one plane...
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7484871 |
Single lens for LED signal light
A lens 10 comprises a first surface 12 and a second surface 14 . The first surface 12 is provided with a plurality of horizontal, linear Fresnel lenses 16 and the second surface 14 is...
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7483220 |
Optical arrangement with stepped lens
The invention comprises an optical arrangement for illumination purposes, in particular for a stepped lens spotlight, comprising a stepped lens with a light-diffusing element, in particular a...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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,...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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