Nikon Corporation

Toshinori Take

Akihiko Obama

Motoyuki Ohtake

Masanori Hasuda

Takayuki Sensui

Noriyasu Kotani

Masakazu Sekiguchi

Masashi Yamashita

Satoshi Miwa

Maki Suzuki

Daisaku Arai

Hiroki Harada

Hideaki Hoshikawa

Hiroki Uwai

Keisuke Tsubonoya

Yoko Komatsubara

Kazuma Hosoi

Akira Yamagami

Yuko Nakada

An optical system and an optical apparatus that have favorable imaging performance and a method for manufacturing the optical system are provided. An optical system OL includes, sequentially from an object side, a front group Ghaving positive refractive power and a focusing group Gthat performs focusing by moving in an optical axis direction, the front group Gincludes, sequentially from the object side, a first lens L, a second lens L, and a third lens L, and the optical system OL satisfies a condition expressed by an expression below,0.10<23/1<0.75

Optical system, optical apparatus, and method for manufacturing optical system

An optical system comprises, in order from an object side, a front group having positive refractive power and a rear group. Upon carrying out focusing, the front group is moved along the optical axis. A predetermined conditional expression is satisfied. Thus, an optical system having a superb optical performance being able to correct superbly various aberrations and being suitable to be used with an imaging device having highly increased number of pixels, an optical equipment equipped therewith and a manufacturing method for the optical system are provided.

Optical system, optical equipment, and manufacturing method for optical system

An electronic device includes: a storage unit that stores therein a plurality of images in which a first subject is imaged, and a plurality of images in which a second subject which is different from the first subject is imaged, and stores therein supplementary information about the first subject and the second subject including information about dates and times of imaging, and sites of imaging; and an extracting unit that extracts images whose dates and times of imaging are different from each other, and images imaged at a common site of imaging based on the supplementary information when extracting an image in which the first subject is imaged and an image in which the second subject is imaged. In the electronic device, when the first subject and the second subject are humans, the storage unit stores therein, as the supplementary information, birth dates of the first and second people.

Electronic device, electronic device control method, and computer-readable recording medium having stored thereon electronic device control program

A lens system having, in order from an object, at least a first lens group Ghaving positive refractive power, and second to fourth lens groups Gto G, wherein the first lens group Gincludes a front portion lens group G, and a rear portion lens group Gwhich is disposed to an image side of the front portion lens group Gwith an air distance therebetween, and performs focusing by shifting the rear portion lens group Gin the optical axis direction, and the fourth lens group Gincludes, in order from the object, a negative lens and a positive lens (cemented negative lens L), a negative lens L, and an aperture stop S, and is fixed in the optical axis direction with respect to an image plane I upon zooming from a wide angle end state to a telephoto end state.

Lens system, optical apparatus and manufacturing method

A compact imaging lens includes, in order from an object side: a first lens group having positive refractive power and consisting of a single lens element; and a second lens group having positive refractive power and consisting of a plurality of lens components. A position of the first lens group is fixed with respect to an image plane. At least a portion of the second lens group is moved as a shift lens group in a direction including a component perpendicular to an optical axis. Specified conditional expressions are satisfied.

Imaging lens, optical apparatus equipped therewith, and method for manufacturing imaging lens

An imaging lens including, in order from an object side: a first lens group Ghaving positive refractive power; and a second lens group Ghaving positive refractive power, a position of the first lens group Gbeing fixed with respect to an image plane, the second lens group Gconsisting of a plurality of lens components, and given conditional expression being satisfied, thereby providing a compact imaging lens imaging lens having a large aperture and a wide angle of view and excellent optical performance over entire image frame with excellently correcting various aberrations upon focusing on an infinity object to a close object.

An optical system includes, in order from an object side: a first lens group Ghaving negative refractive power; and a second lens group Ghaving positive refractive power; upon zooming from a wide-angle end state W to a telephoto end state T, a distance between the first lens group Gand the second lens group Gvarying, and the second lens group Gmoving, and the second lens group Gincluding a focusing lens group Gf that carries out focusing from an infinity object to a close object, and a decentering lens group Gs that is movable in a direction having a component perpendicular to an optical axis, thereby providing an optical system capable of establishing both of internal focusing and a decentering lens group with obtaining compactness and excellent optical performance, an optical apparatus equipped with the optical system, and a method for manufacturing the optical system.

Optical system, optical apparatus and method for manufacturing optical system

An image-capturing lens has, in order from an object, an object side lens group Gand an image side lens group Gwhich is disposed next to the object side lens group Gwith an air space, and focusing is performed from a distant object to a close object by moving at least a part of the image side lens group Galong an optical axis as a focusing lens group, and image stabilization is performed by moving at least a part of the image side lens group Gas a shift lens group so as to have components roughly orthogonal to the optical axis.

Image capturing lens, optical apparatus having same, and method for manufacturing image-capturing lens

The imaging lens includes, in order from an object side, a first lens group having positive refractive power; and a second lens group having the positive refractive power, the first lens group being fixed with respect to an image plane, the second lens group being moved toward the object side to adjust a focus on a close object, and a given conditional expression being satisfied, thereby disclosing a downsized imaging lens having a wide angle of view, capable of preferably correcting various aberrations upon focusing on a close object from an infinitely distant object and having high optical performance over an entire picture, an optical apparatus including the imaging lens and an imaging lens manufacturing method.

A camera system having a predetermined image circle, comprises: an interchangeable lens having a lens mount portion; and a camera body having an image sensor that is disposed within that image circle, and a body mount portion, wherein, when a radius of circular portion at a maximum internal diameter part of an opening portion of the lens mount portion is termed rM, a flange back that is a distance from the lens mount portion to a light reception surface of an image sensor in a state that the interchangeable lens and the camera body are mutually engaged is termed da, and the diameter of the image circle is termed D, the following equations are satisfied:14.0 mm&#x2266;2rM&#x2266;40.0 mm&#x2003;&#x2003;Conditional Expression #116.0 mm&#x2266;da&#x2266;20.0 mm&#x2003;&#x2003;Conditional Expression #214.0 mm&#x2266;D&#x2266;20.0 mm&#x2003;&#x2003;Conditional Expression #3.

Camera system, interchangeable lens and method of manufacturing interchangeable lens

A lens system comprises, on a side closest to an object, a first lens component having a positive refractive power and a second lens component having a positive refractive power in order from the object; and on a side closest to an image, a cemented lens constructed by cementing together a positive lens and a negative lens in order from the object; wherein the lens system satisfies the following conditional expressions:(1+2)/2&#x3e;1.49(&#x3bd;1+&#x3bd;2)/2&#x3e;60where n1 and &#x3bd;1 denote a refractive index and an Abbe number of the first lens component at d-line, respectively, and n2 and &#x3bd;2 denote a refractive index and an Abbe number of the second lens component at d-line, respectively.

Lens system, optical device with lens system, and method of manufacturing lens

Lens system, optical device with lens system, and method of manufacturing lens system

A zoom lens ZL installed in an electronic still cameraand the like includes, in order from an object side, a first lens group Ghaving positive refractive power, a second lens group Ghaving negative refractive power, a third lens group Ghaving positive refractive power, and a fourth lens group Ghaving positive refractive power, a given conditional expressions are satisfied, where rF denotes a radius of curvature of an image side lens surface of the cemented lens in the third lens group, and rR denotes a radius of curvature of an object side lens surface of the negative meniscus lens in the third lens group, thereby providing a zoom lens having excellent optical performance, an optical apparatus equipped therewith, and a method for manufacturing the zoom lens.

Zoom lens, optical apparatus equipped therewith, and method for manufacturing zoom lens

Providing a zoom lens system being compact and simple having excellent optical performance suitable for an optical apparatus with a limited space for a zoom lens, and capable of shifting an image, and an optical apparatus equipped therewith. The system includes, in order from an object: a first group having positive power and an optical path bending element; a second group having negative power; a third group having positive power; and a fourth group having positive power. Upon zooming from a wide-angle end to a telephoto end, the first and third groups are fixed relative to an image plane, the second group and the fourth group are moved along the optical axis, an image on the image plane can be shifted by shifting the third group or a portion thereof substantially perpendicularly to the optical axis. The first group includes at least one negative lens, and satisfies a given condition.

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Yokohama, Japan

Toshinori Take