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| Number | Title | Issue Date |
| 8089708 | Lens system, optical device with lens system, and method of manufacturing lens system A lens system has the following components in order from an object side: one negative lens component; a positive lens component; a negative lens component having a concave surface of a large curvature on an image side; an aperture stop; a negative lens component hav... | 01/03/2012 |
| 8054562 | Imaging lens and imaging apparatus Disclosed is an imaging lens having a small F number, a wide angle of view, and a low manufacturing cost and capable of obtaining a high-quality image. An imaging lens includes a first lens having a negative power and including a concave surface facing an image side... | 11/08/2011 |
| 7830620 | Imaging lens and imaging apparatus An imaging lens includes a first lens having a negative power and including a concave surface facing an image side, a second lens having a positive power, a third lens having a positive power, an aperture diaphragm, a fourth lens, which is a biconvex lens having a n... | 11/09/2010 |
| 7564634 | Lens system A lens system comprises a first lens negative in power, a second lens positive in power, a third lens negative in power, a fourth lens positive in power, a fifth lens negative in power, and a sixth lens positive in power. The lens system meets a criteria of TT/f≦1... | 07/21/2009 |
| 7362509 | Zoom lens A zoom lens includes, in sequence from the object side: a first lens group with an overall negative refractive power; and a second lens group with an overall positive refractive power. A zoom factor changes by moving the second lens group. Focal adjustments are made... | 04/22/2008 |
| 7298561 | Optical device A front group is formed of a negative first lens as a meniscus lens which is convex at the object side and a negative second lens, and a rear group is formed of a biconvex positive third lens, an aperture stop, a negative fourth lens and a biconvex positive fifth le... | 11/20/2007 |
| 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 |
| 7233447 | Zoom lens and projection display device which uses same A zoom lens for a projection display device includes, in order from the long conjugate length side, a first lens group having negative refractive power and including at least one aspheric surface, a second lens group having positive refractive power and including at... | 06/19/2007 |
| 7224498 | Image reading apparatus Disclosed is an image reading apparatus which includes an illumination system, a reading unit, and an imaging optical system for imaging imagewise information provided on a surface of an original as illuminated by the illumination system, upon a surface of the readi... | 05/29/2007 |
| 7224541 | Zoom lens A zoom lens formed in a small size adaptable to a thin and portable device, having three lens groups, including, from the object plane to the image forming plane: a first lens group with a negative power, a second lens group with a positive power and a third lens gr... | 05/29/2007 |
| 7218455 | Zoom lens and imaging apparatus A zoom lens having at least a first lens group including a reflection member for bending an optical axis fixedly during zooming and having a negative refractive power, a second lens group having a negative refractive power, and a third lens group arranged in the ord... | 05/15/2007 |
| 7215481 | Taking lens, and imaging device incorporating the same A taking lens system includes, in order from an object side thereof, a first lens group (negative refracting), a second lens group (positive refracting), an aperture stop and a third lens group (positive refracting). Focusing from an infinite distance to a finite di... | 05/08/2007 |
| 7215477 | Zoom lens and image display apparatus including the zoom lens Provided is a projection lens, including: a plurality of moving lens units that move on an optical axis for zooming; and a plurality of plastic lenses containing plastic, in which when a focal distance of an i-th positive lens from a predetermined plane side of N po... | 05/08/2007 |
| 7203377 | Computing arbitrary fractional powers of a transform operator from selected precomputed fractional powers of the operator Image processing utilizing numerical calculation of fractional exponential powers of a diagonalizable numerical transform operator for use in an iterative or other larger computational environments. In one implementation, one or more selected precomputed fractional ... | 04/10/2007 |
| 7199912 | Fourier transform lens system and holographic storage system using same A Fourier transform lens system includes: a first lens group having negative power and a second lens group having positive power disposed at one side of the first lens group with the first lens group and the second lens group being arranged on a common optical axis.... | 04/03/2007 |
| 7199947 | Miniature digital camera lens Miniature camera lenses (100, 300) include in order an object side (116, 302) to the image side (118, 304) a first double concave lens (102, 306), a lens group including first convergent meniscus lens (104, 318), a first double con... | 04/03/2007 |
| 7184221 | Zoom lens system and camera incorporating the same A zoom lens system, with a new structure that exhibits high optical performance over the entirety of a zoom range and the entirety of a focusing range, is disclosed. This zoom lens system comprises, in order from an object side to an image side: a front lens group w... | 02/27/2007 |
| 7175287 | Wide angle projection lens A projection display device is provided. The projection display device may include an image generation device configured to generate an image and a wide angle lens system having an optical axis configured to receive the image and project the image along an optical p... | 02/13/2007 |
| 7173776 | Fisheye lens system A fisheye lens system with a half angle-of-view of 90° includes a negative front lens group, a diaphragm, and a positive rear lens group. The negative front lens group includes at least three negative meniscus lens elements each of which has the convex surfa... | 02/06/2007 |
| 7150537 | Projection television device and screen A front projection display device is provided including an image-generating source configured to generate an image, a wide angle lens system adapted to receive the image, and a screen. The wide angle lens system may be configured to increase distortion of the image ... | 12/19/2006 |
| 7133210 | Eyepiece lens An eyepiece lens includes first lens group G1 having a negative refracting power including a negative meniscus lens with a concave surface facing eyepoint E.P side, second lens group G2 having a positive refracting power including a lens with both conv... | 11/07/2006 |
| 7102820 | Flat valley fresnel lens for a display device A Fresnel lens for a display device is provided. The Fresnel lens includes a first sloped surface angled to receive input light, a second sloped surface facing the first sloped surface, and a valley floor linking the first sloped surface to the second sloped surface... | 09/05/2006 |
| 7088507 | Rear projection display The ultra-thin rear projection display device described herein includes a lens system and one or more planar mirrors that are parallel to a screen on which an image is to be displayed. The screen may be a Fresnel lens having a plurality of bumps on the output surfac... | 08/08/2006 |
| 7088509 | Laminate screen for display device A rear projection display device is provided. In an embodiment, the display device includes a laminate screen including a Fresnel lens lamina having a non-planar input surface, a substantially planar output surface and a first index of refraction. The laminate scree... | 08/08/2006 |
| 7080910 | Method and system for a thermal architecture and user adjustable keystone in a display device A method and system for a thermal architecture and user adjustable keystone in a display device is described. The system includes a screen, a lens to project images, and one or more mirrors to reflect the images projected by the lens to the screen. A mirror assembly... | 07/25/2006 |
| 7079324 | Zoom lens and image projection apparatus including the same A zoom lens includes a plurality of lens groups including a first lens group arranged on the foremost side and having negative optical power. Zooming is performed by moving at least one of the plurality of lens groups along a direction parallel to an optical axis of... | 07/18/2006 |
| 7075622 | Projection lens and optical projector provided with the same A fixed-focus projection lens 2 comprises practically six lenses; a single lens having negative refracting power serving as a first lens 10, a single lens having positive refracting power serving as a second lens 20, a single lens having negativ... | 07/11/2006 |
| 7057830 | High-aperture wide angle cinema projection lens A projection lens with a short focal length and high initial aperture is proposed. Such projection lenses are used, for example, in cinema projection. The projection lens is configured such that the sum of the overall length and the back focus (12) is between... | 06/06/2006 |
| 7054504 | Relative optical path phase reconstruction in the correction of misfocused images using fractional powers of the fourier transform Reconstructing relative phase information in a misfocused image correction process for misfocused image data having image amplitude information, but lacking relative phase information. A suitable automated or human-operated process is utilized to generate an appropr... | 05/30/2006 |
| 7039252 | Iterative approximation environments for modeling the evolution of an image propagating through a physical medium in restoration and other applications Image processing utilizing numerical calculation of fractional exponential powers of a diagonalizable numerical transform operator for use in an iterative or other larger computational environments. In one implementation, a computation involving a similarity transfo... | 05/02/2006 |
| 7012733 | Double substrate reflective spatial light modulator with self-limiting micro-mechanical elements A spatial light modulator including first and second substrate, and an array of deflectable elements disposed within a gap between the first and second substrates is disclosed herein. For electrostatically actuating the deflectable elements, an array of electrodes a... | 03/14/2006 |
| 7009777 | Compact projection lenses for use with large format pixelized panels Projection lenses for use with pixelized panels (PP) are provided. The projection lenses have first and second lens units (U1,U2), with the first lens unit having a negative or weakly positive power and the second lens unit having a positive power. The... | 03/07/2006 |
| 6989939 | Variable-power optical system, projection optical system, and image projection apparatus using the systems Disclosed is a variable-power optical system, including, sequentially from a front side to a rear side, a negative-refractive-power first lens unit that does not move for zooming, a positive-refractive-power second lens unit, a negative-refractive-power third lens u... | 01/24/2006 |
| 6972908 | Three-group zoom lens including cemented lens component A zoom lens includes three lens groups. The first lens group from the object side has negative refractive power and is formed of a lens component having negative refractive power and a lens element having positive refractive power. The second lens group from the obj... | 12/06/2005 |
| 6940661 | Lens assembly of camera A lens assembly, which is mounted on a digital still camera (DSC), comprises a fixed aperture, and a lens unit. The lens unit has a first lens, a second lens, a third lens, a fourth lens and a fifth lens in sequence. The first lens is a biconvex lens disposed at the... | 09/06/2005 |
| 6940662 | Lens system and camera having the same In a lens system, a first lens having negative optical power and a meniscus shape with a convex surface facing an object side, a second lens having positive optical power and a double-convex shape, a third lens having negative optical power and a double-concave shap... | 09/06/2005 |
| 6906866 | Compact 1½-waist system for sub 100 nm ArF lithography According to one exemplary embodiment, a projection lens having an object plane and an image plane is provided and includes the following lens groups listed objectwise to imagewise: (1) a first lens group having negative refractive power; and (2) at least three othe... | 06/14/2005 |
| 6865032 | Real image type finder optical system, and imaging system comprising the same A real image type finder optical system includes an objective lens group having positive refracting power and an eyepiece lens group having a positive refracting power. The objective lens group includes a first group consisting of a negative lens, a second group con... | 03/08/2005 |
| 6801373 | Projection lens A lens assembly comprising nine lenses. Each lens includes u greater than or equal to about 12.8°, LEP equal to or from about 100 mm to about 400 mm, α Rba greater than or equal to about 1°, and α Rbi less than or equal to about −14°. The outward ray angle ti... | 10/05/2004 |
| 6798585 | Reference lens for interferometer and interferometer that uses it A reference lens for an interferometer is constructed so that light transmitted by a partially reflecting reference spherical surface may be converged, toward a focal point that coincides with the center of curvature of the reference spherical surface, and reflected... | 09/28/2004 |
