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Class 359/686 - Four groups


Subclass of Class 359 - Optical: systems and elements
Definition: Subject matter wherein four groups move independently of
No. of applications: 120
Last issue date: 05/24/2012


1      
Application No.Application TitleIssue Date
20120127584IMAGING LENS
An imaging lens includes a first lens having positive refractive power; a second lens having negative refractive power; a third lens having negative refractive power; and a fourth lens having negative refractive power, arranged from an object side to an image plane side...
05/24/2012
20120050885MACRO LENS SYSTEM
A macro lens system includes a positive first lens group, a negative second lens group, a positive third lens group, and a negative fourth lens group, in that order from the object.

Upon focusing from an infinite photographic distance to a ...

03/01/2012
20120044576ZOOM LENS AND IMAGE PICKUP APPARATUS INCLUDING THE SAME
A zoom lens includes in order from an object side to an image side and arranged along an optical axis thereof, a first lens unit having a negative refractive power, and a second lens unit having a positive refractive power. A distance between each lens unit changes when...
02/23/2012
20120026603ZOOM LENS
A zoom lens disposed between an object side and an image side and including a first, second, third, and fourth lens group is provided. The first lens group has a negative refractive power and includes a first lens and a prism arranged in sequence from the object side to...
02/02/2012
20120019930HIGH-SPEED ZOOM LENS
Embodiments of an optical zoom lens system may comprise three lens groups with a PNP power sequence. The first lens group may vary focus. The second and third lens groups may be movable to vary magnification during zoom. The first lens group may include three lens subgr...
01/26/2012
20120013994ZOOM LENS AND IMAGE PICKUP APPARATUS EQUIPPED WITH ZOOM LENS
A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, a third lens unit having a negative refractive power, and a fourth lens unit having a positi...
01/19/2012
20120008214Image pickup apparatus having optical path reflecting zoom lens
An image pickup apparatus includes a zoom lens, and an image pickup element having an image pickup surface which receives an image which has been formed by the zoom lens, and converts to an electric signal. When an object having a uniform brightness is captured, at any ...
01/12/2012
20120008215Zoom Lens and Image Pickup Apparatus Equipped with Same
A zoom lens has a plurality of lens units including, in order from its object side to image side, a first lens unit having a negative refracting power composed of two lens elements including a biconcave negative lens and a positive lens, and a second lens unit having a ...
01/12/2012
20110279908Image forming optical system and image pick up apparatus using the same
An image forming optical system includes in order from an object side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, which includes an aperture stop, a third lens group having a negative refractive power, ...
11/17/2011
20110273776ZOOM LENS SYSTEM, OPTICAL APPARATUS AND METHOD FOR MANUFACTURING ZOOM LENS SYSTEM
Including, in order from an object side: a first lens group G1 having positive power; a second lens group G2 having negative power; a third lens group G3 having positive power; a fourth lens group G4 having negative power; and a fifth group G...
11/10/2011
20110267504Image forming optical system and electronic image pickup apparatus using the same
An image forming optical system comprising four or five lens groups in total, wherein during zooming from the wide angle end to the telephoto end, the distance between the first lens group and the second lens group increases, the distance between the second lens group a...
11/03/2011
20110261468LIGHT MODULATION PANEL AND IMAGING LENS
A light modulation panel is inserted into an optical path of an imaging lens composed of an image-forming optical system to make the imaging lens function as a depth-of-field-extended optical system. The light modulation panel has power that makes a peak position of def...
10/27/2011
20110242676Lens Module and Camera Device Having The Same
The present disclosure relates to a lens module, the module including a first lens having a positive (+) refractive power and capable of moving for zooming operation; a second lens having a negative (−) refractive power; a third lens having a positive (+) refractive p...
10/06/2011
20110222167COMPACT ZOOM LENS
A zoom lens includes a first lens group including an optical path change member that changes an optical path, a second lens group including at least one negative lens and at least one positive lens, and lens groups having a positive refractive power. The first lens grou...
09/15/2011
20110194188ZOOM LENS
A zoom lens includes a first lens group, a second lens group, a third lens group, and a fourth lens group. The first lens group including three lenses is disposed between a magnified side and an reduced side, and the first lens group has a negative refractive power. The...
08/11/2011
20110134538CLOSE-UP LENS, IMAGING APPARATUS, AND METHOD FOR FOCUSING CLOSE-UP LENS
Providing a close-up lens with superb optical performance capable of focusing from infinity to a close distance allowing a life-size magnification by an internal focusing system with small moving amounts of focusing lens groups, an imaging apparatus, and a method for fo...
06/09/2011
20110109787ZOOM 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, a second lens unit having positive optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optic...
05/12/2011
20110102640ZOOM 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, a second lens unit having positive optical power, a third lens unit having positive optical power, and a fourth lens unit having positive optic...
05/05/2011
20110096407Zoom lens and image pickup device
A zoom lens includes three groups that are a negative first group, a positive second group, and a positive third group in order from an object side. The first group includes a negative cemented lens formed by joining together, from the object side, a first lens formed b...
04/28/2011
20110025866COMPACT LENS OPTICAL SYSTEM AND DIGITAL CAMERA MODULE INCLUDING THE SAME
A dual lens optical system (OS) includes a photographing device, a first OS having a first reflection member and redirecting an optical axis of light representing an image of an object input from a first direction toward the photographing device, and a second OS having ...
02/03/2011
20100328783ZOOM LENS AND IMAGE PICKUP APPARATUS WITH THE SAME
The zoom lens includes, in order from an object side, a first lens unit (positive), a second lens unit (negative), a reflective member and subsequent lens units. A distance between the second and subsequent lens units is reduced during zooming from a wide-angle end to a...
12/30/2010
20100321545Zoom lens and image pickup apparatus equipped with same
A zoom lens is composed, in order from the object side thereof, of a front side lens unit having a negative refracting power at the wide angle end and a rear side lens unit having a positive refracting power at the wide angle end. The front side lens unit includes a fir...
12/23/2010
20100321546Zoom lens and image pickup apparatus equipped with same
A zoom lens is composed, in order from the object side thereof, of a front side lens unit having a negative refracting power at the wide angle end and a rear side lens unit having a positive refracting power at the wide angle end. The front side lens unit includes a fir...
12/23/2010
20100315545Zoom lens and image pickup apparatus
Provided is a zoom lens including a first lens group, a second lens group having a negative refractive power, a third lens group having a positive refractive power, and a fourth lens group having a positive refractive power, wherein conditional expressions f12/fw...
12/16/2010
20100302650ZOOM LENS AND IMAGE PICKUP APPARATUS HAVING THE SAME
A zoom lens comprises 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 rear group including at least one lens unit, in order from an object side to an...
12/02/2010
20100302649ZOOM LENS WITH HIGH OPTICAL PERFORMANCE THROUGHOUT ENTIRE ZOOM RANGE AND IMAGE PICKUP APPARATUS HAVING THE SAME
A zoom lens comprises, 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, and a fourth lens unit having a positive refractive power. The fourth le...
12/02/2010
20100302640LENS SYSTEM, OPTICAL APPARATUS AND MANUFACTURING METHOD
A lens system having, in order from an object, at least a first lens group G1 having positive refractive power, and second to fourth lens groups G2 to G4, wherein the first lens group G1 includes a front portion lens group G1a, ...
12/02/2010
20100295974Electronic image pickup apparatus
An electronic image pickup apparatus comprising a zoom lens system and an image pickup device disposed on an image side of the zoom lens system and which converts an image formed by the zoom lens system into an electric signal, the zoom lens system having, in order from...
11/25/2010
20100295985VARIABLE MAGNIFICATION OPTICAL SYSTEM, IMAGE PICKUP DEVICE AND DIGITAL APPARATUS
A variable magnification optical system of the present invention and an image pickup device and a digital apparatus including this are provided with a four-component optical system of negative-negative-positive-negative arrangement, wherein a first lens group thereof in...
11/25/2010
20100259834Wide-angle zoom lens
The present invention is directed to wide-angle zoom lenses dedicated to single-lens reflex digital cameras, which attains zoom ratio greater than 2. Such a wide-angle zoom lens has four groups of lens pieces, namely comprising the leading or foremost 1st lens group of ...
10/14/2010
20100202064Zoom lens system and image pickup apparatus using the same
A zoom lens system includes in order from an object side to an image side, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, a third lens unit having a negative refracting power, and a fourth lens unit having a ...
08/12/2010
20100195216ZOOM LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM
Provided is a zoom lens system including a compact focusing lens unit and having a suppressed change in image magnification at the time of movement of the focusing lens unit. A zoom lens system of the present invention, in order from an object side to an image side, inc...
08/05/2010
20100194930ZOOM LENS SYSTEM, INTERCHANGEABLE LENS APPARATUS AND CAMERA SYSTEM
Provided is a zoom lens system including a compact focusing lens unit and having a suppressed change in image magnification at the time of movement of the focusing lens unit. The zoom lens system of the present invention includes, in order from an object side to an imag...
08/05/2010
20100194969ZOOM LENS SYSTEM AND IMAGE PICKUP APPARATUS INCLUDING THE SAME
A zoom lens system having a high zoom ratio and excellently correcting various aberrations over an entire zoom range between a wide angle end and a telephoto end to obtain high optical performance in the entire zoom range, includes, in order from an object side to an im...
08/05/2010
20100188755ZOOM LENS SYSTEM, IMAGING APPARATUS, AND METHOD FOR MANUFACTURING ZOOM LENS SYSTEM
A zoom lens system including, in order from an object, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, a third lens group G3 having negative refractive power, and a fourth lens group G...
07/29/2010
20100172030Zoom lens and image capture apparatus
An image capture apparatus includes: a zoom lens; and an image pickup device converting an optical image formed by the zoom lens into an electric signal. The zoom lens includes, in order from the object side, a first lens group with a negative focal length, a second len...
07/08/2010
20100165480ZOOM 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, a second lens unit having positive optical power, and at least one subsequent lens unit having optical power, wherein in zooming from a wide-an...
07/01/2010
20100157106Zoom lens system and image pickup apparatus using the same
A zoom lens system includes in order from an object side, a first lens unit having a negative refracting power, a second lens unit having a positive refracting power, a third lens unit having a positive refracting power, and a fourth lens unit having a negative refracti...
06/24/2010
20100149655PROJECTION-USE ZOOM LENS
The present invention provides a zoom lens having fewer constituting lenses and capable of easily keeping telecentricity. From a projection plane side, lens groups ranging from a first lens group to a fourth lens group are disposed, sequentially. The first lens group co...
06/17/2010
20100149656Zoom lens and image pickup apparatus using the same
A zoom lens includes:
    • a first lens group including a negative lens component of negative refractive power and a positiv...
06/17/2010
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