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| Number | Title | Issue Date |
| 8111470 | Composite lens and method for manufacturing the same The present invention relates to a composite lens and a method for manufacturing the same, particularly to a composite lens in which a second lens component is coupled to a first lens component at part of a first surface, and intends to improve optical characteristi... | 02/07/2012 |
| 8068288 | Thin stepped tulip lens A secondary illumination optic, principally directed toward managing light from light emitting diode illumination sources having a primary optical element, is provided comprising a lens combination arranged along the optical axis, a central convex lens portion being... | 11/29/2011 |
| 8040617 | Real image display device with wide viewing angle A 3-dimensional image display device having wide viewing angles using Fresnel lenses is disclosed. According to an embodiment of the invention, the 3-dimensional image display device includes an image source providing part for providing an image source, a first Fres... | 10/18/2011 |
| 7800841 | Optical object distance simulation device for reducing total optical path An optical object distance simulation device for reducing total optical path includes: a lens, an achromatic lens set, a first image lens, and a second image lens. The achromatic lens set disposes beside one side of the lens, the first image lens disposes beside one... | 09/21/2010 |
| 7474477 | Imaging lens for infrared cameras An infrared imaging device is provided which comprises first and second plastic Fresnel lenses that are in optical communication with each other. Each of the first and second lenses have a first major surface which is convex and a second major surface which comprise... | 01/06/2009 |
| 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 |
| 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 for deposition will take the form of a precision hole, fabricated in a ... | 04/29/2008 |
| 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 incident upon the first surface. The second surface includes a prism ... | 12/18/2007 |
| 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 peripheral portion. ... | 07/31/2007 |
| 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 12c upon which any ray of light emitted from a projector 1 is not directly incident because it is int... | 07/10/2007 |
| 7224539 | Providing optical systems having improved properties to users of catalog (stock) lenses Optical systems providing any or all of better images, brighter images, better optical usability, and better mechanical flexibility are made available to users of catalog lenses. These systems are enabled by apparatus including field compressor/corrector lenses and ... | 05/29/2007 |
| 7212348 | Compact zoom lens system A compact zoom lens system includes, from the object side to the image side, a negative first lens group (1), a positive second lens group (2), a positive third lens group (3) and a positive fourth lens group (4). The first lens group is ... | 05/01/2007 |
| 7212340 | 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 1–4 GPa, the thickness of the article after forming is equal to 0.... | 05/01/2007 |
| 7201503 | Vehicular lamp including hemispherical translucent member with fan-shaped zones and lens elements A vehicular lamp including a translucent member 14 and a light-emitting element 12 with its front being covered by the translucent member 14; a plurality of lens elements 14s1 and 14s2 being formed on th... | 04/10/2007 |
| 7187505 | Imaging lens for infrared cameras An infrared imaging device is provided which comprises first and second plastic Fresnel lenses that are in optical communication with each other. Each of the first and second lenses have a first major surface which is convex and a second major surface which comprise... | 03/06/2007 |
| 7170682 | Projection aligner, aberration estimating mask pattern, aberration quantity estimating method, aberration eliminating filter and semiconductor manufacturing method A projection aligner of the present invention, in which ultraviolet light emitted from a lamp housing is split by a fly-eye lens into a large number of point light sources which are independent of one another. Further, in this projection aligner, the light is shaped... | 01/30/2007 |
| 7165842 | Autostereoscopic display apparatus having glare suppression An improved autostereoscopic display apparatus (10) forms left and right virtual images for pupil imaging by forming, through a beamsplitter (16), a real intermediate image near the focal surface of a curved mirror (24). A circular polarizer ( | 01/23/2007 |
| 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 view, each having a relatively narrow extent, so that the same image c... | 01/23/2007 |
| 7164542 | Zoom lens, variable magnification group, camera unit and portable information terminal unit Disclosed is a zoom lens herein. The zoom lens has a first group G1 having a negative focal length, a second group G2 having a positive focal length and a third group G3 having a positive focal length in turn from an object side, and has an open... | 01/16/2007 |
| 7123422 | Zoom lens system To provide a zoom lens system having high optical performance by using a diffractive optical element, the system includes a first group having positive power, a second group having negative power, and a third group having positive power. When zooming from a wide-ang... | 10/17/2006 |
| 7116495 | Optical system for optical pickup device, coupling lens and optical information recording/reproducing apparatus An optical system includes an objective lens; and a plastic coupling lens to change a divergent angle of a light flux emitted from a light source and is structured such that the light flux emitted from the light source passes through both of the coupling lens and th... | 10/03/2006 |
| 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 reflection type prism portion. In the refraction type prism portion, a ray o... | 10/03/2006 |
| 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 mold to each have an upper transfer surface and a lower transfer surface... | 09/12/2006 |
| 7085203 | Optical head with defocusing correction and spherical aberration correction An optical head with excellent optical characteristics even when using a light source that substantially has a wavelength broadening is provided. The optical head includes a light source, an objective lens for focusing a light beam emitted from the light source on a... | 08/01/2006 |
| 7023613 | Operation microscope and observation prism There are provided an operation microscope and an observation prism which are capable of conducting a high-visibility observation with less glare. The operation microscope includes an objective lens opposed to an eye to be operated, a front lens which is provided be... | 04/04/2006 |
| 7006290 | Optical system and method of designing optical system An optical system includes a diffractive optical element and a refractive optical element. The diffractive optical element corrects a chromatic aberration flare component of wavelengths other than a predetermined wavelength (a design wavelength) remaining in the ref... | 02/28/2006 |
| RE38943 | Compound objective lens for optical disks having different thicknesses A compound objective lens is composed of a hologram lens or transmitting a part of incident light without any diffraction to form a beam of transmitted light and diffracting a remaining part of the incident light to form a beam of first-order diffracted light, and a... | 01/24/2006 |
| 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 circular prisms. Each of the prisms of the prism groups has a total r... | 01/17/2006 |
| 6970291 | Projection aligner, aberration estimating mask pattern, aberration quantity estimating method, aberration eliminating filter and semiconductor manufacturing method A projection aligner of the present invention, in which ultraviolet light emitted from a lamp housing is split by a fly-eye lens into a large number of point light sources which are independent of one another. Further, in this projection aligner, the light is shaped... | 11/29/2005 |
| 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 focal areas in the focal plane. Despite the use of a light source of s... | 11/29/2005 |
| 6956193 | Highly sensitive imaging camera for space applications including detection of ultrahigh energy cosmic rays An imaging camera includes a housing that defines a proximal end and a distal end. A Fresnel lens is installed in the proximal end of the housing. Moreover, a reflection mode photocathode is installed in the distal end of the housing opposite the Fresnel lens. An el... | 10/18/2005 |
| 6947225 | Fresnel lens sheet, process of producing Fresnel lens sheet, mold for use in the production process, and rear projection screen comprising the Fresnel lens sheet The present invention provides a Fresnel lens sheet that can, in production using a mold, be easily released from the mold and that scarcely produces stray light upon use, and others. Each prism 2 on the incident side of a Fresnel lens sheet 1 is forme... | 09/20/2005 |
| 6926412 | Projection display apparatus with a curved screen A projection display apparatus with red (R), green (G), and blue (B) monochromatic cathode ray tubes (CRTs) and three projection lenses, disposed in front of the R, G, and B monochromatic CRTs respectively, along with a screen having a predetermined curvature concav... | 08/09/2005 |
| 6924943 | Asymmetric TIR lenses producing off-axis beams The present invention relates to an improvement of a total internal reflection lens whereby a tilted symmetry axis leads to a net deflection of the output beam away from the surface normal of the exit surface. Linear TIR lenses have a net deflection transverse to th... | 08/02/2005 |
| 6922292 | Wide angle imaging system A wide angle imaging system for providing a wide angle field of view of an area exteriorly of a vehicle includes an image capture device having a field of view directed exteriorly of the vehicle, an outer wide angle lens, a focusing lens and a display. The image cap... | 07/26/2005 |
| 6882482 | Liquid-crystal lens and method and apparatus for driving the same A liquid-crystal lens includes a hologram liquid-crystal element having a liquid crystal which provides a light beam transmitting therethrough with a phase change so as to have a wavefront of a blaze-hologram shape; and a segment liquid-crystal element including a f... | 04/19/2005 |
| 6876498 | Optical component thickness adjustment method and optical component If after manufacture it is found that the thickness of a solid immersion lens is less than a target thickness value, an adjustment portion is adhered thereto by vapor deposition so as to reduce the amount of thickness deficiency. If the solid immersion lens is made ... | 04/05/2005 |
| 6831790 | Optical element, method for producing the same, and optical pickup An optical element having a substrate formed by an optical material and able to improve mechanical strength, wherein the substrate has a convex part functioning as a convex lens, a flat part positioned around the convex part, and an outer circumference part position... | 12/14/2004 |
| 6822812 | Off-angle display systems and associated methods of manufacture and use Visual display systems that can accommodate off-angle viewing. In one embodiment, a visual display system includes a visual display device, such as a video display device, having a display screen configured to display visual images. The display screen can at least g... | 11/23/2004 |
| 6741402 | Objective lens for optical head A single element objective lens for an optical disc drive converges a laser beam, which is emitted by a laser source, on a data recording surface of an optical disc through a protective layer of the optical disc. One surface of the objective lens is divided into a c... | 05/25/2004 |
