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| Number | Title | Issue Date |
| 8014069 | Polarization converter, optical system, method and applications A stress-induced polarization converter in the form of a zero power optical window or, alternatively, a single element, positive or negative power optical lens, that is subject to a controlled amount of symmetric, peripheral stress. The stress may be provided by app... | 09/06/2011 |
| 7764440 | Dual focal length lens system A dual focal length optical system includes a first optical system and a second optical system. The first optical system is positioned along an optical axis and includes an optical structure having an object side surface and an image side surface. The object side su... | 07/27/2010 |
| 7626769 | Extended depth of field imaging system using chromatic aberration An imaging system (FIG. 3) is disclosed that has a wavelength dependent focal shift caused by longitudinal chromatic aberration in a lens assembly (203) that provides extended depth of field imaging due to focal shift (213,214) and increased res... | 12/01/2009 |
| 7423801 | Lens with SLM Apparatus for enhancing vision of a user includes a focal modulation device (22), which is adapted to focus light from objects in a field of view of the user onto the retina while alternating between at least first and second focal states that are characteriz... | 09/09/2008 |
| 7412158 | Deeper depth of field for video A digital camera apparatus has a sensing surface that captures images at a first resolution. A derivative of the captured image is displayed at a viewfinder or stored in a memory, after encoding, with a second, generally lower resolution. The resolutions are related... | 08/12/2008 |
| 7408724 | Optical systems including a chromatic diffractive optical element corrector and associated methods A diffractive optical element (DOE) corrector for use with three different wavelengths includes a first diffractive element on a first surface of a first material, the first diffractive element diffracting a first wavelength of the three wavelengths, while directing... | 08/05/2008 |
| 7385173 | Photosensitive array detector for spectrally split light A detector includes a photosensitive array including at least one photosensitive surface. A focusing device focuses spectrally split light onto the photosensitive array. The focusing device is located in an optical path upstream from the photosensitive array. The fo... | 06/10/2008 |
| 7369327 | Variable optical-property element and optical apparatus including the same A variable optical-property element includes a liquid crystal the pitch of twist is less than 60 times the wavelength of light used, so that a spatially uneven electric or magnetic field or temperature is applied to the liquid crystal to thereby form an index distri... | 05/06/2008 |
| 7357521 | Chromatic dispersion compensation device and method A chromatic dispersion compensator whereby the amount of dispersion and the group delay time can be easily adjusted. A dispersion unit, a transmitting lens and a group delay generation unit are arranged along the optical axis of incident light. The dispersion unit s... | 04/15/2008 |
| 7317580 | Zoom lens In this invention, to provide a compact zoom lens having a small number of optical element groups to be driven and a simple moving mechanism, at least one of a plurality of optical element groups arranged in the lens system includes a refractive power variable eleme... | 01/08/2008 |
| 7301686 | Optically controlled optical-path-switching apparatus, and method of switching optical paths An optical signal optical path switching method comprising steps of using a thermal lens based on a distribution of refractive index produced reversibly caused by temperature increase generated in an area of the light-absorbing layer film of thermal lens forming dev... | 11/27/2007 |
| 7271963 | Bi-curvature lens for light emitting diodes and photo detectors A bi-curvature lens for diodes in an infrared wireless communication transceiver is disclosed. Devices having such a bi-curvature lens, such as a light emitting device, a light detecting device, and a transceiver are also disclosed. A method for designing such a len... | 09/18/2007 |
| 7268947 | Diffractive optical element and optical head using the same A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light when light with a wavelength of 0.6 μm to 0.7 μm is incident. The di... | 09/11/2007 |
| 7265911 | Zoom lens system having variable power element A multiple group variable focal length lens is provided. The lens has a first lens group including a variable power lens element and is positioned in a stationary manner along an optical axis. The lens also has a second lens group moveably positioned along the optic... | 09/04/2007 |
| 7262861 | Ultrasound single-element non-contacting inspection system A laser ultrasonic inspection apparatus and method which enables remote sensing of thickness, hardness, temperature and/or internal defect detection is disclosed. A laser generator impinges a workpiece with light for generating a thermo-elastic acoustic reaction in ... | 08/28/2007 |
| 7253948 | Optical magnification device for distance variation An optical magnification device for varying the distance between an observer's eye (1) and an object (7), e.g., for a binocular magnifier or a microscope, in which focusing onto the object (7) is accomplished by means of progressive lenses (3) d... | 08/07/2007 |
| 7231721 | Archery laser arrow The laser targeting system of the present invention eliminates the problem of parallax between the arrow's path and the archer's line of sight. An embodiment is a laser integrated into an arrow such that the beam is projected down the axis of the arrow. Another embo... | 06/19/2007 |
| 7230772 | Wide-angle zoom lens system A wide-angle zoom lens system includes a negative first lens group, a positive second lens group, a negative third lens group and a positive fourth lens group, in this order from the object. Upon zooming from the short focal length extremity to the long focal length... | 06/12/2007 |
| 7220064 | Coupling optical system for optical communications A coupling optical system for coupling light into an optical fiber of an optical communications system includes a liquid that includes a dispersion of microscopic particles and two transparent media that hold the liquid between them along an optical axis. The refrac... | 05/22/2007 |
| 7221399 | Imaging apparatus with a multifocal lens formed of two pieces with different focal lengths An imaging apparatus for imaging a first object at a normal distance and a second object nearer than the first object readily with high precision. The imaging apparatus has an imaging lens, an imaging device for capturing an image formed by the imaging lens, and a c... | 05/22/2007 |
| 7218448 | Extended depth of field optical systems A system for increasing the depth of field and decreasing the wavelength sensitivity of an incoherent optical system incorporates a special purpose optical mask into the incoherent system. The optical mask has been designed to cause the optical transfer function to ... | 05/15/2007 |
| 7215491 | Optical path switching device and method An optical path switching method includes converging and irradiating, on a light absorption layer film provided in a thermal lens forming element including at least the film, each of a control light having a wavelength selected from a wavelength band which is absorb... | 05/08/2007 |
| 7159988 | Projection optical unit and projection image display apparatus A projection optical unit has two lens groups. A first projection optical unit disposed closest to an image display element, temporarily forms a first enlarged image (magnification: M1) at the image display element side, rather than at a second projection opt... | 01/09/2007 |
| 7158317 | All optical extended “depth-of field” imaging system The instant invention is an optical imaging system that produces images of acceptable quality of objects which are located at a wide variety of distances from the optical imaging system. A preferred embodiment of the optical imaging system includes an object (10 | 01/02/2007 |
| 7150945 | Polarized reticle, photolithography system, and method of forming a pattern using a polarized reticle in conjunction with polarized light Polarized reticles, photolithography systems utilizing a polarized reticle, and methods of using such a system are disclosed. A polarized reticle is formed having a reticle containing at least one first patterned region at least partially surrounded by at least one ... | 12/19/2006 |
| 7133219 | Telescopic sighting device with variable exit pupil A sighting device includes a fixed-position objective lens group lying on an optical axis, an eyepiece lens group lying on the optical axis, and a variable-position objective lens group lying on the optical axis and positioned between the fixed-position objective le... | 11/07/2006 |
| 7110185 | Image pickup apparatus An image pickup apparatus includes a multifocal optical system in which first and second focal lengths on short and long focal length sides is optically selected; an image pickup device for converting an optical image into an image signal; an image processor which p... | 09/19/2006 |
| 7110328 | Recording and reproducing apparatus for recording and reproducing information to and from a magneto-optical storage medium An information recording/reproducing apparatus for recording and reproducing information to and from a magneto-optical storage medium that includes a first magnetic layer for recording at least information, a second magnetic layer for regulating a switched connectiv... | 09/19/2006 |
| 7085063 | Multi-directional optical element and an optical system utilizing the multi-directional optical element Multi-directional optical elements are disclosed that include a body having a first side having a first curvature, a second side having a second curvature, a third side having a third curvature, and a fourth side having a fourth curvature. The second side is dispose... | 08/01/2006 |
| 7082000 | Aspherical lens with grating An aspherical lens (10, 10′) has an aspherical surface (101, 101′) and an opposite flat surface (102, 102′). A multiple-step grating is defined in the flat surface by a photolithographic method. The aspherical lens has a reduced chromatic ... | 07/25/2006 |
| 7068438 | Grin-lens arrangement A lens arrangement for transforming a divergent, generally astigmatic laser beam from a diode laser into a beam having a high degree of rotational symmetry is disclosed. The arrangement comprises, in series, a first cylindrical gradient index lens arranged with its ... | 06/27/2006 |
| 7058252 | Optical switching apparatus A light direction switching apparatus and method is described. The light direction switching apparatus comprises a passive birefringent lens (138), e.g. a birefringent lenticular screen, and a switchable polariser (146). By switching the polariser (... | 06/06/2006 |
| 7042649 | Microfabricated rubber microscope using soft solid immersion lenses Soft lithography with surface tension control is used to microfabricate extremely efficient solid immersion lenses (SILs) out of rubber elastomeric material for use in microscope type applications. In order to counteract the surface tension of the mold material in a... | 05/09/2006 |
| 7027377 | Optical head device and objective lens An optical head device that converges first and second laser beams having different wavelengths on recording surfaces of first and second optical recording media through a single light converging optical system including an objective lens for recording or reproducin... | 04/11/2006 |
| 7025454 | Extended depth of field optics for human vision The present invention provides extended depth of field to human eyes by modifying contact lenses, intraocular implants, and/or the surface of the eye itself. This may be accomplished by applying selected phase variations to these optical elements (e.g., by varying s... | 04/11/2006 |
| RE39025 | Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means provided along the light path for cont... | 03/21/2006 |
| 7006425 | Information recording and/or reproducing method and apparatus for three dimensional optical recording medium Information is recorded/reproduced by focusing a light beam in/from an optical recording medium capable of forming therein marks for information recording in a plurality of three-dimensional directions including an arbitrary directions and at least depth direction. ... | 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 |
| 6990136 | Laser beam transmission apparatus A laser beam transmission apparatus comprises a light-incidence optical system (22) converging and focusing a laser beam emitted from a solid-state laser apparatus (1), and an optical fiber (8) which transmits the laser beam that has been conver... | 01/24/2006 |
| 6970412 | Diffraction type lens which converges two wavelengths of light A diffraction type lens in an optical pickup apparatus for recording and reproducing two or more kinds of optical recording media is constituted by a substrate having one surface formed with a zone plate exhibiting a smaller converging action with respect to a wavel... | 11/29/2005 |
