Matches 1 - 50 out of 276 1 2 3 4 5 6 >


Match Document Document Title
US20060056049 Lens-interchangeable camera combining image pickup device and interchangeable lens unit combining image pickup device  
The present invention provides a lens-interchangeable camera combining an image pickup device, comprising: a lens unit having a lens and the image pickup device; a camera body having a lens unit...
US20090147374 Rear focusing zoom lens  
Rear focusing zoom lens capable of attaining the desired brightness as much as 1.8 in F-number with the zooming ratio of 11× or above, reducing distortion aberration for the photoshooting at the...
US20100020411 PROJECTION VARIABLE FOCUSING LENS AND PROJECTION DISPLAY DEVICE  
Disclosed is a projection variable focusing lens and a projection display device that has a reduction side which is telecentric, a high magnifying power, a small size, a light weight, and a low...
US20100020410 Zoom lens, lens barrel and image pickup apparatus  
Disclosed herein is a zoom lens, wherein a stop moves in an optical axis direction n in a phase of zooming; a position of the stop in a telephoto end is located on an object side with respect to a...
US20100007967 ZOOM LENS UNIT, IMAGING APPARATUS AND PORTABLE INFORMATION TERMINAL DEVICE  
A zoom lens unit including, in order from an object side to an image surface side: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a...
US20090219624 PROJECTION ZOOM LENS SYSTEM AND PROJECTION TYPE DISPLAY APPARATUS  
The projection zoom lens system includes a negative first lens group, a positive second lens group, a third lens group, a positive fourth lens group, a fifth lens group, and a positive sixth lens...
US20110102906 LENS SYSTEM  
A lens system includes, in order from an object side, a first lens group with positive refractive power, a second lens group with negative refractive power that moves during zooming, a third lens...
US20080204893 Small refractive zoom lens optical system  
Disclosed is a zoom lens optical system including: a first lens group that is provided close to an object, has a negative refractive power in total, and includes an optical part having a surface...
US20090147375 ZOOM LENS, IMAGING APPARATUS, AND PERSONAL DATA ASSISTANT  
A zoom lens includes a first optical system having a positive focal length, the first optical system, a second optical system having a negative focal length, a third optical system having a...
US20100002300 Zoom lens and pickup apparatus  
Disclosed herein is a zoom lens, including: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third lens group having a positive...
US20090244719 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. Upon zooming from the short focal length extremity to the long focal length...
US20090303596 TELEPHOTO ZOOM LENS  
A telephoto zoom lens having four lens groups in a P-N-P-P configuration arranged sequentially from an object side. The first lens group includes a front group which is fixed when focusing and has...
US20090273849 FOCUS ADJUSTMENT METHOD OF ZOOM LENS SYSTEM  
A focus adjustment method of a zoom lens system is provided for correcting a focal point shift caused by manufacturing error. The zoom lens system includes three movable lens groups in which at...
US20120307374 ZOOM LENS SYSTEM AND OPTICAL INSTRUMENT USING THE SAME  
A zoom lens system includes a negative first lens group, a positive second lens group, and a positive third lens group, in that order from the object side. The second lens group constitutes a...
US20100073778 ZOOM LENS, CAMERA DEVICE AND PERSONAL DIGITAL ASSISTANT  
A zoom lens including, in order from an object side to an image side, a first group having a negative focal length, a second group having a positive focal length, a third group having a negative...
US20100091382 ZOOM LENS, OPTICAL APPARATUS HAVING THE SAME, AND MANUFACTURING METHOD  
A zoom lens having an optical element for deflecting an optical path includes, in order from an object: a first lens group having positive refractive power; a second lens group having negative...
US20090296230 ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME  
Provided is a zoom lens including in order from an object side to an image side: a first lens unit having a positive refractive power; a second lens unit having a negative refractive power; a...
US20150168697 Zoom Lens and Zoom Lens Apparatus Using the Same  
A zoom lens includes in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit...
US20100033838 HIGH ZOOM-RATIO ZOOM LENS SYSTEM  
A high zoom-ratio zoom lens system of five lens groups includes a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a negative...
US20100321791 VARIABLE MAGNIFICATION OPTICAL SYSTEM, OPTICAL APPARATUS WITH THE SAME, AND METHOD FOR MANUFACTURING VARIABLE MAGNIFICATION OPTICAL SYSTEM  
Provided are a variable magnification optical system for making it possible to properly set a variable magnification ratio of each lens group by properly setting a variable magnification ratio of...
US20140355130 ZOOM LENS AND IMAGE PICKUP APPARATUS HAVING THE SAME  
A zoom lens includes, in order from the object side, a positive first lens unit which does not move for zooming or focusing, a negative second lens unit which moves during zooming, a positive...
US20090207501 ZOOM LENS AND IMAGING DEVICE HAVING THE SAME  
A zoom lens including, in an order from an object side to an image side, a first lens group having a positive refracting power, a second lens group having a negative refracting power, a rear group...
US20090208195 Zoom Lens, image capture apparatus, and method for controlling zoom lens  
A zoom lens formed of a plurality of lens groups and performing zooming by changing separations between predetermined lens groups. A lens group closest to an object side is fixed in both optical...
US20090122418 ZOOM LENS UNIT AND IMAGING APPARATUS  
A zoom lens unit includes, in order from an object side to an image side: a first lens group having a positive refracting power; a second lens group having a negative refracting power; a third...
US20130163094 Objective Optical System and Observation Apparatus Provided with the Same  
An objective optical system of an embodiment according to the present invention is formed in such a way that: the objective optical system includes an immovable lens group which is arranged...
US20090034089 ZOOM LENS  
The zoom lens 100 comprises, sequentially from the object side, a stationary first lens group 110 having positive refractive power; a second lens group 120, having negative refractive power, and...
US20120105683 ZOOM LENS SYSTEM, LENS BARREL, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM  
Compact and lightweight zoom lens systems having less aberration fluctuation in association with focusing, lens barrels, interchangeable lens apparatuses, and camera systems are provided. The zoom...
US20110069396 ZOOM LENS  
The invention relates to a new mechanism for permitting a zoom lens to focus on a short distance subject by moving a focusing lens group in an amount that varies in an optical axis direction...
US20100073776 ZOOM LENS AND IMAGING APPARATUS  
A zoom lens includes a first negative lens group, a second negative lens group, a third positive lens group, an aperture diaphragm, and a fourth positive lens group arranged in this order from an...
US20150253545 ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME  
A zoom lens includes: 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; a fourth...
US20110286106 ENHANCED VARIABLE POWER ZOOM LENS  
The present invention is directed to provide an enhanced variable power zoom lens that has focusing lens optics reduced in weight so as to relieve of a load on a focusing drive system, and that...
US20130050566 ZOOM LENS AND IMAGE PICKUP APPARATUS EQUIPPED WITH THE ZOOM LENS  
A zoom lens includes a first lens unit of a positive refractive power, a second lens unit of a negative refractive power, a third lens unit of a positive refractive power, and a fourth lens unit...
US20150234164 ZOOM LENS AND IMAGE PICKUP APPARATUS USING THE SAME  
The zoom lens has an aperture stop arranged between the second lens unit and the fourth lens unit. During zooming from the wide angle end to the telephoto end, the distances between the lens units...
US20120212834 ZOOM LENS SYSTEM  
A zoom lens system has a combined focal length fw at the wide angle end and includes, in order from an object side, a first lens group with positive refractive power and combined focal length f1;...
US20110007403 ZOOM OPTICAL SYSTEM, OPTICAL APPARATUS EQUIPPED THEREWITH AND METHOD FOR MANUFACTURING THE ZOOM OPTICAL SYSTEM  
Composing a zoom optical system ZL, in order from an object side, a first lens group G1 having positive refractive power, a second lens group G2 having negative refractive power, a third lens...
US20140300782 ZOOM LENS AND IMAGE PICKUP DEVICE INCLUDING THE SAME  
A zoom lens includes, in order from the object side to the image plane side, first to fifth lens units having positive, negative, positive, negative and positive refractive powers. At least the...
US20090002843 ZOOM LENS  
In the zoom lens, the second lens group includes at least one surface that is an aspheric surface, and during changing magnification, the second lens group, the third lens group, and the fourth...
US20140118607 ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME  
A zoom lens includes, in order from an object side, a first unit that does not move, a negative second unit which moves during zooming, a positive third unit which moves during zooming, a positive...
US20140247505 ZOOM LENS  
An embodiment of this invention provides a zoom lens, which comprises a plurality of lens groups in order from an object side to an image-forming side with positive, negative, positive, and...
US20120147248 IMAGING LENS AND IMAGING APPARATUS  
An imaging lens includes: an aperture stop; a first lens having a positive refractive power; a second lens having a negative refractive power which is formed in a concave shape on both sides...
US20080297901 ZOOM LENS SYSTEM, OPTICAL APPARATUS, AND METHOD FOR FORMING AN IMAGE  
Providing a zoom lens system having a high zoom ratio being compact with high optical performance. The system includes, in order from an object along an optical axis, a first lens group G1 having...
US20110019288 ZOOM LENS  
An inner-focusing zoom lens that includes multi groups of lens pieces, namely, the first lens group or the leading lens group of positive refractivity, the second lens group of negative...
US20100182705 ZOOM LENS SYSTEM AND IMAGE PICKUP APPARATUS INCLUDING THE SAME  
A zoom lens system including, in order from object-side to image-side: a positive first lens unit, a second negative lens unit, a third lens unit and a fourth positive lens units, in which: the...
US20130293967 ZOOM LENS SYSTEM, OPTICAL APPARATUS, AND METHOD FOR MANUFACTURING ZOOM LENS SYSTEM  
A zoom lens system ZL comprising, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group...
US20120327272 Zoom Lens System, Imaging Device and Camera  
A zoom lens system comprising: a positive first lens unit; a negative second lens unit; a positive third lens unit; a fourth lens unit; and an aperture diaphragm provided between the third lens...
US20130033621 ZOOM LENS AND IMAGING DEVICE  
Disclosed herein is a zoom lens including a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive...
US20110109978 Zoom lens and image pickup apparatus equipped with same  
A zoom lens according to the present invention includes, in order from the object side to the image side, a first lens unit having a positive refracting power, a second lens unit having a negative...
US20120087016 ZOOM LENS AND IMAGE PICKUP APPARATUS WITH ZOOM LENS  
A zoom lens includes, in order from an object side to an image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a third lens...
US20120307373 ZOOM LENS AND IMAGE PICKUP APPARATUS EQUIPPED WITH ZOOM LENS  
A zoom lens includes, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, and a fourth lens...
US20150131164 ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME  
A zoom lens includes, in order from an object side: a positive first lens unit that does not move for zooming and comprises a negative first sub-lens unit, a positive second sub-lens unit that...

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