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| Number | Title | Issue Date |
| 8179618 | Optical unit and image pickup apparatus An optical unit includes a first lens, a second lens, a diaphragm, a third lens, a fourth lens, and a fifth lens, which are arranged in the stated order from an object side to an image plane side. The second lens has a convex shape. The third lens has a meniscus sha... | 05/15/2012 |
| 8077404 | Optical unit The present invention relates to an optical unit. The present invention further relates to the use of such an optical unit. Such an optical unit comprises, seen in a direction from the object side to the imaging surface, a first substrate, a first lens element, a fl... | 12/13/2011 |
| 7342730 | Zoom lens optical system A compact zoom lens optical system suitable for use in a camera using a solid state photographing device and providing excellent correction of color aberrations, high zooming ratio, and telecentricity. The zoom lens optical system includes: a first lens group having... | 03/11/2008 |
| 7327953 | Zoom lens and imaging device A zoom lens with a reduced thickness and size in the depthwise direction consists of a plurality of lens groups (GR1 to GR5), so that it varies in power in response to variation in intervals between the lens groups. The zoom lens also has a prism G2... | 02/05/2008 |
| 7312934 | Zoom lens and imaging apparatus Disclosed is a zoom lens which is composed of a plurality of groups of lenses and which varies the power thereof by changing inter-group spacings. The zoom lens is configured such that: the last group of lenses that is located at the end of an image space and is neg... | 12/25/2007 |
| 7312847 | Refractive projection objective for immersion lithography A purely refractive projection objective suitable for immersion micro-lithography is designed as a single-waist system with five lens groups, in the case of which a first lens group with a negative refracting power, a second lens group with a positive refracting pow... | 12/25/2007 |
| 7286303 | Macro lens The invention discloses a macro lens that takes a retrofocusing function for the purpose of downsizing. The macro lens employs a floating mechanism to cover a wide photographing range from the equi-magnification to the infinity, and especially, attains a great imagi... | 10/23/2007 |
| 7256946 | Zoom lens having a wide angle of view and a high zooming ratio and a camera employing the same A zoom lens with a wide angle of view and a high zooming ratio and a camera employing the zoom lens. The zoom lens includes a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a pos... | 08/14/2007 |
| 7187504 | Zoom lens and image pick up apparatus including the same A zoom lens includes, in order from an object side to an image side: a first lens unit having positive optical power; a second lens unit having negative optical power; a third lens unit having positive optical power and an aperture stop; a fourth lens unit having ne... | 03/06/2007 |
| 7173768 | Zoom lens and image pickup apparatus A zoom lens has first to fifth lens groups G1 to G5 having positive, negative, positive, positive, and negative refractive power, in order from an object side. The first lens groups G1 includes a prism L2 for bending a light path. Zooming... | 02/06/2007 |
| 7092169 | Zoom lens system A zoom lens system, in sequence from an object side to an image side, includes a first lens group having positive refractive power and fixed for gathering incoming light; a second lens group having negative refractive power for changing a focal length of the zoom le... | 08/15/2006 |
| 7072119 | Afocal zoom lens for microscopes An afocal zoom lens for microscopes includes five lens units having, in order from the object side, positive, negative, negative, positive, and negative refracting powers. When the magnification of the afocal zoom lens is changed in the range from a low-magnificatio... | 07/04/2006 |
| 7068441 | Zoom lens optical system A zoom lens optical system includes a first optical group with a first lens having negative refraction, a second lens having positive refraction, and a light path changing unit to change the path of an incident light passing through the first lens to have light inci... | 06/27/2006 |
| 7050245 | Lens assembly and optical imaging using same A lens assembly includes, in order from an object side to an image side: a first lens; a first meniscus lens in optical communication with the first lens; a second meniscus lens in optical communication with the first meniscus lens; an aperture stop in optical commu... | 05/23/2006 |
| 7012764 | Projection lens A projection lens, for enlarging and projecting a picture formed on a flat fluorescent plate of a CRT projection tube, includes: a first lens unit of a plus lens, having aspheric surfaces on both surfaces, being convex to the screen side at a central portion includi... | 03/14/2006 |
| 6987622 | Zoom lens and image taking system There is disclosed a zoom lens having small variations of aberration and field angle during focusing and having a small system as a whole. The zoom lens includes a first lens unit having a positive optical power, a second lens unit having a negative optical power, a... | 01/17/2006 |
| 6972909 | Zoom lens and image pickup apparatus having the same The zoom lens has, in order from the object to image sides, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, and a fourth lens unit having a positive re... | 12/06/2005 |
| 6954316 | Projection objective Projection exposure device and also projection objective with a lens arrangement which has at least one lens group of negative refractive power, this lens group comprising at least four lenses of negative refractive power, and a lens of positive refractive power bei... | 10/11/2005 |
| 6950246 | Imaging optical system and apparatus using the same The image forming optical system comprises, in order from an object side, a first lens which is positive meniscus lens having a convex surface directed toward an object side, an aperture stop, a second lens which is positive meniscus lens having a convex surface dir... | 09/27/2005 |
| 6909559 | Lens for reading an original, method and apparatus for reading an original, and image forming apparatus A lens for reading an original, comprises five lenses as a whole including two positive and two negative lenses, an aspherical surface provided on at least one surface of the five lenses, a construction of four lens groups for five lenses which include a cemented le... | 06/21/2005 |
| 6906872 | Lens module for a thin scanning device A lens module for a thin scanning device is to be disposed on an optical path from an original to an image sensor, and includes first to fifth lenses and a stop. The first lens has a focal length and a shape factor with identical signs, and is disposed to form an ob... | 06/14/2005 |
| 6891596 | Refractive projection objective for immersion lithography A purely refractive projection objective suitable for immersion micro-lithography is designed as a single-waist system with five lens groups, in the case of which a first lens group with a negative refracting power, a second lens group with a positive refracting pow... | 05/10/2005 |
| 6781766 | Projection optical system A projection optical system comprises a first lens group with positive power, a second lens group with negative power, a third lens group with positive power, a fourth lens group with negative power, and a fifth lens group with positive power. At least one of the fi... | 08/24/2004 |
| 6747814 | Wide-angle lens The present invention provides a high-performance, thin wide-angle lens suitable for imaging elements with high pixel counts. The wide-angle lens includes, from an object side to an image plane side: a first lens group including a first lens having a negative refrac... | 06/08/2004 |
| 6735018 | Eyepiece lens, objective lens, and optical apparatus having them An eyepiece lens is constructed with, in order from an entrance side for light to an exit side for light, first, second, third, fourth and fifth lens units of negative, positive, positive, positive and positive refractive powers, respectively. Each of the first, sec... | 05/11/2004 |
| 6650486 | Lens 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 biconcave lens dis... | 11/18/2003 |
| 6556353 | Projection optical system, projection exposure apparatus, and projection exposure method A dioptric projection optical system projects an image of a first surface onto a second surface and includes a first lens group having a negative refractive power and arranged in an optical path between the first surface and the second surface, a second l... | 04/29/2003 |
| 6538821 | Projection optical system An object of the present invention is to provide a projection optical system having a large numerical aperture in which the maximum effective diameter of lens of the optical system is satisfactorily small. There is provided a projection optical system for... | 03/25/2003 |
| 6449104 | Gaussian lens A Gaussian lens having no more than six lens elements of refractive power is formed of, in order from the object side: a first lens element which is biconvex, a second lens element which is a positive meniscus lens with its convex surface on the object si... | 09/10/2002 |
| 6445513 | Single-focus lens Provided is a single-focus lens in which cost reduction and a simple configuration with a shorter overall length are realized as well as preferable optical performance is achieved. In the single-focus lens, consecutively arranged form the object side are ... | 09/03/2002 |
| 6310734 | Imaging lens and image readout apparatus using the same An imaging lens comprises, successively from an object side, a positive first lens L1 having a convex surface directed onto the object side, a negative second lens L2 having a concave surface directed onto an image side, a third lens... | 10/30/2001 |
| 6301063 | Color image readout lens A color image readout lens usable within a magnification range from -0.6X to -1.7X comprises, successively from the object side, a first lens group G1 comprising by a lens having a positive refracting power with a convex surface directed onto t... | 10/09/2001 |
| 6288847 | Attachment lens system An attachment lens optical system for extending a focal length of a camera lens and balancing axial chromatic aberrations of the camera lens comprises, in order from the object side, a first lens group having a negative power single lens element, a second... | 09/11/2001 |
| 6285516 | Photographic lens for electronic still camera A photographic lens for an electronic still camera having five lens components, with refractive powers in sequential order from the most object side, as follows: negative, positive, positive, negative and positive. A stop is positioned between the second ... | 09/04/2001 |
| 6222685 | Imaging lens An imaging lens comprises a front group constituted by a first lens L1 made of a negative meniscus lens having a convex surface directed onto the object side, the object-side surface thereof being made aspheric, and a second lens L2 ... | 04/24/2001 |
| 6088172 | Bright wide-angle lens A compact, bright wide-angle lens including at least five lens elements, as follows, in order from the object side: a negative lens element, a positive lens element, a negative lens element, a positive lens element and a negative lens element. The large a... | 07/11/2000 |
| 6038085 | Super wide angle lens A super wide angle lens, having a viewing angle greater than 120 degrees, and an F-number of about 1.2 is disclosed. The lens is formed of a first lens group G1 of negative refractive power, a second lens group G2 of positive refract... | 03/14/2000 |
| 6014262 | Collimator lens and optical scanner device which uses such collimator lens A collimator lens having five lens elements of negative, negative, positive, positive, and negative refractive power, in order from a collimated luminous flux side of the collimator lens, and designed to have a large back focus, to thereby prevent heat fr... | 01/11/2000 |
| 5990926 | Projection lens systems for excimer laser exposure lithography A projection lens system that is used to transfer a pattern from a reticle onto a wafer, incorporates a projection optical system that is capable of maintaining the same, or increased performance, as the current projection lens systems, and that achieves ... | 11/23/1999 |
| 5963381 | Photographic lens for electronic still camera Successively from an object side, a negative lens having a concave surface directed onto an image surface side, a positive meniscus lens having a convex surface directed onto the image surface side, a positive lens having a convex surface directed onto th... | 10/05/1999 |
