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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Application No. | Application Title | Issue Date |
| 20120050882 | ZOOM LENS, OPTICAL APPARATUS AND METHOD OF MANUFACTURING ZOOM LENS A zoom lens having, in order from an object, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, and a third lens group GH3 having positive refractive power, wherein the second lens group ... | 03/01/2012 |
| 20120050883 | ZOOM LENS, OPTICAL APPARATUS AND METHOD OF MANUFACTURING ZOOM LENS A zoom lens having, in order from the object, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, and a third lens group G3 having positive refractive power, wherein the second lens group ... | 03/01/2012 |
| 20120044575 | RETROFOCUS WIDE-ANGLE LENS SYSTEM AND OPTICAL INSTRUMENT PROVIDED WITH THE SAME A retrofocus wide-angle lens system is provided, wherein the entire the wide-angle lens system is divided at a position that satisfies the following condition (1) between a theoretical front lens group having a negative refractive power, and a theoretical rear lens grou... | 02/23/2012 |
| 20120026601 | ZOOM LENS SYSTEM, IMAGING DEVICE AND CAMERA A zoom lens system, in order from an object side to an image side, comprising a first lens unit having negative optical power and at least one subsequent lens unit, wherein a second lens unit is located closest to the object side in the subsequent lens units, an interva... | 02/02/2012 |
| 20120019926 | ZOOM LENS SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING ZOOM LENS SYSTEM A zoom lens system comprising, in order from an object side: a first lens group G1 having negative refractive power; and a second lens group G2 having positive refractive power, a distance between the first lens group and the second lens group varying upon... | 01/26/2012 |
| 20120008036 | ZOOM LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM A zoom lens system comprising: a first lens unit having negative optical power; a second lens unit; and at least one subsequent lens unit, wherein in zooming, the first lens unit moves along an optical axis, and at least an interval between the second lens unit and a le... | 01/12/2012 |
| 20110304921 | ZOOM LENS FOR PROJECTION AND PROJECTION-TYPE DISPLAY APPARATUS A zoom lens for projection includes a negative magnification-side lens group fixed while magnification is changed, a plurality of lens groups that move while magnification is changed, and a positive reduction-side lens group fixed while magnification is changed which ar... | 12/15/2011 |
| 20110279906 | VARIABLE MAGNIFICATION OPTICAL SYSTEM AND IMAGING APPARATUS A variable magnification optical system includes a negative first lens group, a stop and a positive second lens group, arranged from the object side in the order mentioned above. The magnification of the variable magnification optical system is changed by changing a dis... | 11/17/2011 |
| 20110267704 | ZOOM LENS FOR PROJECTION AND PROJECTION-TYPE DISPLAY APPARATUS A zoom lens for projection includes a negative first lens group, a positive second lens group, a positive third lens group, and a positive fourth lens group, which are arranged from the magnification side of the zoom lens in the order mentioned above. The first lens gro... | 11/03/2011 |
| 20110249344 | VARIABLE MAGNIFICATION OPTICAL SYSTEM FOR PROJECTION AND PROJECTION-TYPE DISPLAY APPARATUS A variable magnification optical system for projection includes a first-lens-group having negative refractive power, and which is fixed when magnification of the variable magnification optical system is changed, a second-lens-group having negative refractive power, and ... | 10/13/2011 |
| 20110211263 | IMAGING LENS, OPTICAL APPARATUS INCLUDING IMAGING LENS AND METHOD FOR MANUFACTURING IMAGING LENS An imaging lens SL mounted in a digital single lens reflex camera 1 is composed of, in order from an object side, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, and a third lens group... | 09/01/2011 |
| 20110194190 | ZOOM LENS SYSTEM AND ELECTRONIC IMAGING APPARATUS THAT USES THE SAME A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group, in this order from the object. Each of the negative first lens group, the positive second lens group and the positive th... | 08/11/2011 |
| 20110194191 | ZOOM LENS SYSTEM, IMAGING APPARATUS, AND METHOD FOR ZOOMING THE ZOOM LENS SYSTEM Providing a zoom lens system having excellent optical performance with a high zoom ratio, an imaging apparatus, and a method for zooming the zoom lens system. The system including, in order from an object, a first group G1 having negative refractive power, a seco... | 08/11/2011 |
| 20110149411 | ZOOM LENS A zoom lens having less distortion and exhibiting good imaging performance is provided. A zoom lens includes a first lens unit provided at the extremity of an enlargement conjugate side and having a negative refractive power, and a final lens unit provided at the extrem... | 06/23/2011 |
| 20110141574 | ZOOM LENS, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING ZOOM LENS A zoom lens includes, in order from an object side along an optical axis: a first lens group G1 having negative refractive power; a second lens group G2 having positive refractive power; and a third lens group G3 having positive refractive power. Upon zooming from a wid... | 06/16/2011 |
| 20110141575 | ZOOM LENS SYSTEM, OPTICAL APPARATUS EQUIPPED WITH ZOOM LENS SYSTEM AND METHOD FOR ZOOMING ZOOM LENS SYSTEM A zoom lens system ZL mounted in an electronic still camera 1 etc is constructed to include, in order from an object side, a first lens group G1 having negative refractive power and a second lens group G2 having positive refractive power, in which t... | 06/16/2011 |
| 20110134537 | ZOOM LENS SYSTEM, OPTICAL APPARATUS EQUIPPED THEREWITH, AND METHOD FOR ZOOMING ZOOM LENS SYSTEM A zoom lens system ZL installed in an electronic still camera 1 and the like comprising, in order from an object side: a first lens group G1 having negative refractive power; and a second lens group G2 having positive refractive power; the second le... | 06/09/2011 |
| 20110109976 | ZOOM LENS FOR PROJECTION AND PROJECTION-TYPE DISPLAY DEVICE In a zoom lens for projection, a lens group arranged farthest to the reduction side is fixed when the magnification of the zoom lens is changed, and is composed of a negative aspheric lens made of a plastic material having at least one aspheric surface and a positive le... | 05/12/2011 |
| 20110002044 | ZOOM LENS AND IMAGE PROJECTION APPARATUS INCLUDING THE SAME A zoom lens includes, in order from an enlargement conjugate side to a reduction conjugate side, a first lens unit of negative refractive power; a second lens unit of positive refractive power; a third lens unit of positive refractive power, the third lens unit having a... | 01/06/2011 |
| 20100165476 | OPTICAL SYSTEM AND OPTICAL APPARATUS INCLUDING OPTICAL SYSTEM Provided are an imaging optical system in which chromatic aberrations are excellently corrected across the entire screen to realize high optical performance, and an optical apparatus including the imaging optical system. In an imaging optical system of which a back focu... | 07/01/2010 |
| 20090201590 | OPTICAL SYSTEM AND OPTICAL APPARATUS INCLUDING OPTICAL SYSTEM An optical system used for an image pickup apparatus including an image pickup element is provided. The optical system includes a negative lens disposed furthest away on the enlargement conjugation side and satisfies the following condition: 80 degrees<2ω, where 2ω... | 08/13/2009 |
| 20090168192 | OPTICAL SYSTEM AND OPTICAL APPARATUS INCLUDING THE SAME An optical system includes a first negative lens element disposed nearest a front side and a first positive lens element whose front surface resides within a distance 0.4 L from the surface nearest the front side toward a rear side of the optical system having a total l... | 07/02/2009 |
| 20090097130 | Zoom lens and electronic imaging device having the same A zoom lens includes a most object-side lens unit remaining fixed on the optical axis when the magnification of the zoom lens is changed and a focusing operation is performed; a most image-side lens unit remaining fixed when the focusing operation is performed; and a pl... | 04/16/2009 |
| 20080247049 | ZOOM LENS AND IMAGE PROJECTION APPARATUS The zoom lens includes a plurality of lens units. The first lens unit is disposed closest to a magnification side in the plurality of lens units and has a negative optical power, and magnification-varying lens units that are disposed closer to a reduction side than the ... | 10/09/2008 |
| 20080239507 | IMAGE PROJECTION OPTICAL SYSTEM AND IMAGE PROJECTION APPARATUS An image projection optical system introduces light from an image-forming element by a zoom lens via an optical element. The optical element satisfies Σ(Di×Ndi)/fw>4.0. The zoom lens includes, in order from a magnification side, first and second lens units, and len... | 10/02/2008 |
| 20080068726 | PHOTOGRAPHIC WIDE ANGLE ZOOM OBJECTIVE OF THE RETROFOCUS TYPE Photographic wide angle zoom objective of the retrofocus type having a group of negative refractive power (VG−) comprising four lens components (L1, L2, L3, L4) and being a front group when seen from the object side, and having a rear group... | 03/20/2008 |
| 20080007841 | Lens unit and image pickup apparatus A lens unit according to the present invention is capable of varying power for forming an image onto an image pickup element. The lens unit includes: a plurality of lens groups, a diaphragm, and a shutter. In the plurality of lens groups, a distance between a k-th lens ... | 01/10/2008 |
| 20070285800 | ZOOM LENS SYSTEM, IMAGING APPARATUS AND METHOD FOR VARYING FOCAL LENGTH A zoom lens system having higher optical performance, a wide angle of view, a high zoom ratio, and compactness include, in order from an object, a first group having negative power, a second group having positive power, and a third group having positive power. At least ... | 12/13/2007 |
| 20070279759 | Zoom lens, and imaging system comprising the same The invention relates to a zoom lens favorable for offering a tradeoff between slimming down a lens system upon received in an associated lens mount and making sure a small F-number. There is a zoom lens provided, which comprises, in order from its object side, a first ... | 12/06/2007 |
| 20070263294 | Projection zoom lens and projection-type display device A negative first group G1 is fixed when a power of the projection zoom lens varies and has a focusing function. A positive second group G2, a positive or negative third group G3, a positive fourth group G4 and a positive or ne... | 11/15/2007 |
| 20070242366 | ZOOM LENS AND IMAGE PICKUP APPARATUS HAVING THE SAME At least one exemplary embodiment is directed to a zoom lens which includes, in order from the object side to the image side, a first lens unit having a negative refractive power, a second lens unit having a negative refractive power, a stop, a third lens unit having a ... | 10/18/2007 |
| 20070236804 | PROJECTION LENS AND PROJECTION TYPE DISPLAY DEVICE USING THE SAME A projection lens includes, in order from a magnification side, a first lens group, a second lens group and a third lens group. The first lens group includes, in order from the magnification side, a negative lens whose lens made of a non-resin, a plastic lens at least o... | 10/11/2007 |
| 20070223102 | ZOOM LENS SYSTEM FOR USE WITH SMALL ELECTRONIC SENSOR A five-element 3:1 zoom lens system in which the first lens group has a negative power and includes two lens elements and the second lens group has a positive power and includes a pair of lens sub-groups, the first sub-group having a positive power and including a pair ... | 09/27/2007 |
| 20070211350 | Zoom lens system, imaging device and camera A zoom lens system comprising a first lens unit of negative power, a second lens unit of positive power and a third lens unit of positive power, wherein in zooming, the lens units move respectively along an optical axis so that an interval of first lens unit and second ... | 09/13/2007 |
| 20070206293 | Magnifying optical system for endoscope A magnifying optical system for endoscope which can be set at least in a usual observing condition (at a wide position) and a condition for observing a magnified image of an object at a short distance (at a tele position) by moving any of one of lens units, and is confi... | 09/06/2007 |
| 20070201143 | Magnification varying optical system and image taking apparatus A magnification varying optical system that directs light from an object to an image sensor includes in order from the object side: a first lens unit having negative optical power and including an optical axis changing element that changes the optical axis; a second len... | 08/30/2007 |
| 20070201142 | Zoom lens and camera with zoom lens There is provided a zoom lens of variable power ratio of the order of 3 in which the whole of the zoom lens is made up of three lens elements groups and the power configuration of each of the groups has an arrangement of negative, positive and negative, whereby the redu... | 08/30/2007 |
| 20070201141 | WIDE-ANGLE LENS SYSTEM A wide-angle lens system includes a negative front lens group and a positive rear lens group, in this order from the object. The negative front lens group includes a negative first sub-lens group and a positive second sub-lens group, in thi... | 08/30/2007 |
| 20070201140 | WIDE-ANGLE LENS SYSTEM A wide-angle lens system includes a negative front lens group and a positive rear lens group, in this order from the object. The negative front lens group includes a negative first sub-lens group and a positive second sub-lens group, in thi... | 08/30/2007 |
| 20070201139 | ZOOM LENS AND IMAGE ACQUISITION APPARATUS INCORPORATING THE SAME A zoom lens having an effective focal length fw for the wide angle mode comprises a first lens group, a second lens group and a third lens group. The first lens group has a negative effective power and an effective focal length f1, wherein 2.1<|f1/fw|<2.6.... | 08/30/2007 |
