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Zoom Lens patents



      
           
This page is updated frequently with new Zoom Lens-related patent applications. Subscribe to the Zoom Lens RSS feed to automatically get the update: related Zoom RSS feeds. RSS updates for this page: Zoom Lens RSS RSS


Zoom lens system

Image processing apparatus, image pickup apparatus and image processing method

Date/App# patent app List of recent Zoom Lens-related patents
07/17/14
20140198394
 Zoom lens and imaging apparatus patent thumbnailnew patent Zoom lens and imaging apparatus
A zoom lens includes a positive first lens group fixed during zooming, a negative second lens moved to the image side upon zooming from the wide angle end to the telephoto end, a negative third lens group for image plane correction during zooming, and a positive fourth lens group fixed during zooming. The first lens group is composed of a negative first lens group front group, a positive first lens group middle group, and a positive first lens group rear group, disposed in order from the object side.
07/17/14
20140198393
 Zoom lens and image pickup apparatus including the same patent thumbnailnew patent Zoom lens and image pickup apparatus including the same
A zoom lens including a plurality of lens units, and two variable stops having an aperture diameter changing for zooming, the lens units being configured to change intervals between the respective neighboring lens units for zooming, the zoom lens having an f-number which is constant over an entire zoom range, the two variable stops including a first variable stop disposed on an object side, and a second variable stop disposed on an image side. A distance (sw1) from the first variable stop to an image plane at a wide-angle end, a distance (sw2) from the second variable stop to the image plane at the wide-angle end, and a distance (tkw) from an exit pupil position to the image plane at the wide-angle end are each set appropriately..
07/17/14
20140198392
 Zoom lens system patent thumbnailnew patent Zoom lens system
A zoom lens system that includes a first lens group including at least one lens and having a negative refractive power, and a second lens group including at least one lens and having a positive refractive power in an order from an object side to an image side, wherein the zoom lens system is configured to perform zooming by changing a distance between the first lens group and the second lens group and satisfies: 2<. .
07/17/14
20140198231
 Image processing apparatus, image pickup apparatus and image processing method patent thumbnailnew patent Image processing apparatus, image pickup apparatus and image processing method
The image processing apparatus includes an image acquirer configured to acquire an input image produced by image capturing through a zoom lens whose magnification is variable, and a processor configured to perform an image restoration process using an image restoration filter produced on a basis of information on aberration of the zoom lens. The processor is configured to not perform the image restoration process on a central image area of the input image produced by the image capturing through the zoom lens set in a specific magnification state and to perform the image restoration process on a specific image area more outer than the central image area of that input image..
07/03/14
20140185148
 Zoom lens patent thumbnailZoom lens
In a zoom lens of a fixed total length, at the time of changing the magnification from the wide-angle end toward the telephoto end, the first lens group is anchored while the second lens group is moved, and the third and fourth lens groups are moved so as to be located at the object side of the telephoto end relative to the wide-angle end, such that: the interval between the second and third lens groups is decreased at the telephoto end relative to the wide-angle end; the interval between the third and fourth lens groups is increased at the telephoto end relative to the wide-angle end; and the interval between the fourth and fifth lens groups is increased at the telephoto end relative to the wide-angle end, and at the time of focusing a near object point from a remote object point, the second lens group is moved.. .
07/03/14
20140185147
 Zoom lens system patent thumbnailZoom lens system
Wherein vd_10 denotes an abbe number of a line d of the lens included in the fourth lens group.. .
07/03/14
20140185146
 Zoom lens and photographing apparatus having the same patent thumbnailZoom lens and photographing apparatus having the same
A zoom lens and a photographing apparatus including the zoom lens are provided. 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 positive refractive power, and a fourth lens group having a positive refractive power, all of which are arranged sequentially from an object side to an image side.
07/03/14
20140185145
 Zoom lens, imaging device and information device patent thumbnailZoom lens, imaging device and information device
A zoom lens includes, in order from an object side in an optical axis a first lens group having a positive refractive power, a second lens group having a negative refractive power; a third lens group having a negative refractive power, a fourth lens group having a positive refractive power, a fifth lens group having a positive refractive power, and an aperture stop arranged between the third lens group and the fourth lens group, an interval between the first lens group and the second lens group being increased, an interval between the second lens group and the third lens group being varied, an interval between the third lens group and the fourth lens group being decreased, and an interval between the fourth lens group and the fifth lens group being decreased when changing a magnification from a wide-angle end to a telephoto end.. .
07/03/14
20140185144
 Image display device patent thumbnailImage display device
An image display device includes a high-performance projection zoom lens with a very wide field angle and an image display device including a projection zoom lens of a five-lens-group type, which achieves high performance across the entire zoom area. The image display device is configured to project an image onto a target projection surface and display a magnified image of the image, which uses a projection zoom lens having a five-lens-group configuration in which first to fifth lens groups g1 to g5 are arranged from the magnification side toward the reduction side, and each of the constituent lens groups or lenses included in the lens groups has a combination of negative and positive refractive powers, and in the lens configuration, focal lengths of the constituent lens groups, relative travel distances, lens distances to the image display element, and constituent lens shapes are properly selected..
07/03/14
20140185143
 Projection zoom lens patent thumbnailProjection zoom lens
Disclosed is a projection zoom lens used in an image display device configured to project an image onto a target projection surface and display a magnified image of the image, in which the projection zoom lens has a five-lens-group configuration in which first to fifth lens groups g1 to g5 are arranged from the magnification side toward the reduction side, and each of the constituent lens groups or lenses included in the lens groups has a combination of negative and positive refractive powers, and in the lens configuration, focal lengths of the constituent lens groups, relative travel distances, lens distances to the image display element, and constituent lens shapes are properly selected.. .
07/03/14
20140184884
Zoom lens and camera device
The zoom lens comprises the foremost or first lens group of positive refractive power located the closest to an object, the succeeding second lens group of negative refractive power, and the third lens group of positive refractive power, all arranged in this order, and if any, the rearmost lens group(s) closer to the imaging plane than the third lens group, all or part of the lens group(s) of negative refractive power behind the third lens group being moved in directions normal to the optical axis to serve as an anti-vibration lens for shifting an image. The zoom lens meets requirements as defined in the formula regarding a displacement of the first lens group, a focal length of the zoom lens at the wide-angle end, a focal length of the zoom lens at the telephoto end, and a focal length of the first lens group..
07/03/14
20140184856
Zoom lens and camera device
The zoom lens comprises five or more groups of lens pieces, namely, the foremost or first lens group of positive refractive power located the closest to an object, the succeeding second lens group of negative refractive power, the third lens group of positive refractive power, the fourth lens group of positive refractive power, and the fifth lens group all arranged in this order, and if any, the rearmost lens group(s) closer to the imaging plane than the fifth lens group. The zoom lens meets requirements as defined in the formula regarding a synthetic optical power of the fifth lens group and, if any, the rearmost lens group(s) closer to the imaging plane than the fifth lens group while the zoom lens is taking a posture of the telephoto end..
06/26/14
20140177075
Zoom lens and imaging apparatus
0.00<fw/f2<0.35  (1-1).. .
06/26/14
20140177074
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/26/14
20140177073
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/26/14
20140177072
Zoom lens and imaging apparatus
0.00<. .
06/26/14
20140177071
Zoom lens and imaging apparatus
0.56<. .
06/26/14
20140177070
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/26/14
20140177069
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/26/14
20140177067
Zoom lens system
F1, f2 and f3 designate the focal lengths of the first, second and third lens groups, respectively, and f3b designates the focal length of a bonding surface in the cemented lens of the third lens group.. .
06/26/14
20140177065
Zoom lens
A high-power zoom lens that achieves size and price reduction, and at the same time provides high-quality imaging. This lens includes at least four lens groups arranged along an optical axis, which are moveable along the axis in order to achieve changes in magnification.
06/26/14
20140176778
Zoom lens and photographing apparatus having the same
A zoom lens and a photographing apparatus having the zoom lens are provided. 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 including a shutter and having a positive refractive power; a fourth lens group having a positive refractive power, a fifth lens group having a negative refractive power, and a sixth lens group having a positive refractive power, wherein the first, second, third, fourth, fifth, and sixth are arranged from an object side toward an image side, and when the zoom lens zooms from a wide angle position to a telephoto position, the third lens group is fixed, and the first, second, fourth, fifth, and sixth lens groups are moved..
06/19/14
20140169778
Imaging apparatus and imaging method capable of quickly setting photographing condition, and non-transitory storage medium
In the present invention, in a state where a photographing parameter of an imaging section (for example, the focal length of a zoom lens) has been set within the range between a first value (for example, a wide angle end of 18 mm) and a second value (for example, a telephoto end of 140 mm), and a reference value (for example, 28 mm) for the photographing parameter has been set within the range between the first value and the second value, a control section changes the set parameter to the reference value.. .
06/19/14
20140168791
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/19/14
20140168790
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/19/14
20140168789
Zoom lens and imaging apparatus
A zoom lens substantially consists of: a first lens group having a negative refractive power and a second lens group having a positive refractive power arranged in order from the object side; that changes magnification by moving the first lens group and the second lens group; and wherein the first lens group is configured by a first lens having a negative refractive power, a second lens, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, arranged in order from the object side. The zoom lens satisfies a predetermined conditional expression..
06/19/14
20140168788
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/19/14
20140168501
Zoom lens and imaging apparatus
There is provided a zoom lens including, in order from an object side: a first lens group having a positive refractive power; 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. The second lens group includes, in order from an object side, a negative meniscus lens concave toward an image plane side, a negative lens concave toward both sides, and a positive lens convex toward both sides.
06/12/14
20140160347
Zoom lens having vibration prevention function
A zoom lens includes, sequentially from an object side, a first lens group having a positive refractive power, a second lens group having a negative refractive power, and a third lens group having a positive refractive power. When zoom is changed from a wide angle end to a telephoto end, an interval between the first lens group and the second lens group increases, and an interval between the second lens group and third lens group decreases.
06/12/14
20140160342
Zoom lens
A zoom lens includes, sequentially from an object side, a positive first lens group, a negative second lens group, a positive third lens group, and a positive rear lens group. During zooming from a wide angle position to a telephoto position, an interval between the first lens group and the second lens group increases, and an interval between the second lens group and the third lens group decreases.
06/12/14
20140160272
Recognition apparatus, recognition method, mounting apparatus, and mounting method
The recognition and mounting apparatus including a zoom lens capable of changing imaging magnification, a chip camera, having a plurality of imaging pixels, capable of capturing an image an ic chip having a plurality of bumps arranged at at least one interval, through the zoom lens, a storage unit for storing shape information of the ic chip including at least information indicating an arrangement interval between the plurality of bumps, and a signal processor adjusting imaging magnification of the zoom lens based on a length of the imaging pixel and the information indicating the arrangement interval stored in the storage unit, and recognizing a position of the bump based on a plurality of pixel values in the image captured by the chip camera may be provided.. .
06/05/14
20140153111
Zoom lens and imaging apparatus
A zoom lens substantially consists of a first lens group having a negative refractive power and a second lens group having a positive refractive power arranged in order from the object side; that changes magnification by moving the first lens group and the second lens group; and wherein the first lens group is configured by a first lens having a negative refractive power, a second lens, a third lens having a negative refractive power, and a fourth lens having a positive refractive power, arranged in order from the object side. The zoom lens satisfies a predetermined conditional expression..
06/05/14
20140153110
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/05/14
20140153109
Zoom lens
A zoom lens includes a first lens group, a second lens group, a third lens group and a fourth lens group, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens group is with positive refractive power and includes a first lens that is with negative refractive power and a second lens that is with positive refractive power.
06/05/14
20140153107
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. Magnification is changed by moving the first lens group and the second lens group.
06/05/14
20140153106
Zoom lens and imaging apparatus
−0.19<f1/fg12<0.16  (2-1).. .
06/05/14
20140153105
Zoom lens and imaging apparatus
2.0<(rg12f+rg12r)/(rg12f−rg12r)<30.0  (1-1).. .
06/05/14
20140152887
Zoom lens and electronic device including the same
A zoom lens includes, sequentially from an object side, a first lens group having negative refractive power, a second lens group having positive refractive power, a third lens group having negative refractive power; and a fourth lens group having positive refractive power. When zoom is varied from a wide-angle end to a telephoto end, positions of the first lens group and the fourth lens group are fixed on an optical axis.
05/29/14
20140146217
Zoom lens and image pickup apparatus equipped with same
A zoom lens includes, in order from the object side to the image side along its optical path, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power and including a prism reflecting member, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power, wherein the distances between the lens units vary during zooming from the wide angle end to the telephoto end, the first lens unit and the third lens unit are located closer to the ray incidence side at the telephoto end than at the wide angle end, the position of the second lens unit is fixed during zooming from the wide angle end to the telephoto end.. .
05/29/14
20140146216
Zoom lens and image pickup apparatus
The 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 having a positive refractive power, a fourth lens unit having a positive refractive power, and a fifth lens unit having a negative refractive power. During zooming, the second lens unit is not moved and the first, third and fifth lens units are moved.
05/22/14
20140139930
Zoom lens and image projection apparatus including zoom lens
A zoom lens includes a front group, an aperture stop, and a rear group. The front group includes a lens unit configured not to move during zooming and a front variable power lens unit including one or more lens units and configured not to move during zooming.
05/22/14
20140139722
Zoom lens and image-pickup apparatus
A zoom lens includes a lens unit lv positioned at the most object side of a plurality of lens units having the negative refractive power, a lens unit lp positioned at the most object side of lens units having a positive refractive power, the lens units being positioned at an image side of the lens unit lv, and lens units fp and fn respectively having a positive and a negative refractive power positioned at an image side of the lens unit lp, the lens units fp and fn being configured to move during focusing. During focusing from infinity to minimum object distance, the lens unit fp and the lens unit fn move in the same direction in a wide angle range, and the lens unit fp moves to an object side and the lens unit fn moves to an image side in a telephoto range..
05/22/14
20140139720
Zoom lens and image pickup apparatus equipped with same
72<ν3p<110  (1).. .
05/22/14
20140139718
Zoom lens system and image pickup device having the same
A zoom lens system according to the present invention includes a first lens group with negative refractive power, a second lens group with positive refractive power, a third lens group with positive refractive power, and a fourth lens group with negative refractive power which are arranged in turn from the object side toward the image side, and the zoom lens system is formed so that, in performing a zooming operation from the wide angle end position to the telephoto end position, the first lens group keeps still, the distance between the first and second lens groups becomes small, the distance between the second and third lens groups becomes wide, and the distance between the third and fourth lens groups becomes small.. .
05/22/14
20140139691
Camera control system and method of controlling operation of same
Collision of communication data on a network line is prevented. A plurality of cpu boards which are independent of one another and have respective ones of cpus mounted thereon are connected by a network line.
05/15/14
20140133036
Zoom lens and imaging apparatus
A zoom lens includes a first lens-group having positive refractive power, a second lens-group having negative refractive power, a third lens-group having positive refractive power, and a fourth lens-group having positive refractive power, in this order from an object side, and a stop located between a most image-side surface of the second lens-group and a most image-side surface of the third lens-group. Distances between the lens-groups change when magnification is changed from a wide-angle end to a telephoto end.
05/15/14
20140132830
Zoom lens system, interchangeable lens apparatus and camera system
A zoom lens system comprising a plurality of lens units, wherein a lens unit located closest to an object side and a lens unit located closest to an image side are fixed with respect to an image surface in zooming from a wide-angle limit to a telephoto limit at a time of image taking, and at least three lens units among all the lens units are moving lens units that move along an optical axis in the zooming, at least one lens unit among the moving lens units is a focusing lens unit that moves along the optical axis in focusing from an infinity in-focus condition to a close-object in-focus condition, and the following condition: Σ(tn)/h≦2.1 (Σ(tn): the total of axial thicknesses of all the moving lens units, h: the maximum image height) is satisfied.. .
05/15/14
20140132790
Zoom lens and image pickup apparatus equipped with same
A zoom lens includes a frontmost lens unit, which is located closest to the object side and a plurality of lens units located closer to the image side than the frontmost lens unit. All the distances between adjacent lens units vary during zooming in the state in which the zoom lens is focused on an object at infinity.
05/08/14
20140126059
Zoom lens and imaging apparatus
A zoom lens includes a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, and a fourth lens group having positive refractive power, which are in this order from an object side, and a stop located between a most image-side surface of the second lens group and a most image-side surface of the third lens group. Distances between the lens groups change when magnification is changed from a wide angle end to a telephoto end.
05/08/14
20140125859
Autofocus camera system and control method thereof
Disclosed is an autofocus camera system and a control method thereof. A cctv camera system which includes a main processor installed in a cctv, a memory unit connected with the main processor, an input unit, a ccd camera, a video processing unit, a focus lens, and a zoom lens is provided.
05/08/14
20140125858
Zoom lens and image pickup apparatus including same
The zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, and a rear lens group including one or more lens units and having as a whole a positive refractive power. The first and rear lens group are moved during zooming so that a distance therebetween decreases at a telephoto end as compared with at a wide-angle end.
05/08/14
20140125827
Zoom lens and image pickup apparatus using the same
0.5<(ltlt/βrear)/flg1<1.0  (1).. .
05/08/14
20140124373
Particle manipulation system and projection device
A particle manipulation system and a projection device are provided. The projection device includes an image source and a projection lens.
05/01/14
20140118841
Zoom lens and imaging apparatus
A zoom lens substantially consists of, in order from the object side: a first lens group that has a positive refractive power and is fixed during magnification change; a second lens group that has a negative refractive power and is moved along the optical axis during magnification change; a third lens group that has a negative refractive power and corrects for fluctuation of the image plane along with magnification change; and a fourth lens group that has a positive refractive power and is fixed during magnification change. Focusing of an object at a distance between infinity and a predetermined distance is achieved by moving a first-group second lens sub-group, which is a part of the first lens group, along the optical axis, and focusing of an object at a closer distance than the predetermined distance is achieved by moving the third lens group along the optical axis..
05/01/14
20140118840
Zoom lens system
A zoom lens system includes a plurality of lens groups, a lens group of which is moved to perform zooming, wherein a specified lens group of the lens groups is a focusing lens group; a normal photography mode in which focusing is carried out from infinity to a predetermined photographing distance by moving the focusing lens group of the specified lens group; and a shifting mode which shifts from the normal photography mode to a macro photography mode by moving a lens element of the specified lens group other than the focusing lens group when focusing on an object at a photographing distance that is shorter than the predetermined photographing distance. When the zoom lens system is in the macro photography mode, focusing is carried out from the predetermined photographing distance to a minimum photographing distance by moving the focusing lens group..
05/01/14
20140118839
Zoom lens and image-pickup apparatus
A zoom lens includes, in order from an object side to an image side, a first, a second, a third, a fourth, a fifth, a sixth and a seventh lens units respectively having positive, negative, positive, negative, positive, negative and positive refractive powers. A distance between adjacent lens units change during zooming so that a distance between the fourth lens unit and the fifth lens unit at a telephoto end is shorter than the distance at a wide angle end and a distance between the fifth lens unit and the sixth lens unit at the telephoto end is longer than the distance at the wide angle end.
05/01/14
20140118607
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 fourth unit which moves during zooming and focus adjustment, an aperture stop that does not move in an optical axis direction, and a positive fifth unit which does not move, wherein zinf representing a zooming ratio of the entire zoom lens when focused on infinity, β3winf and β3tinf representing lateral magnifications of the third unit at the wide angle end and a telephoto end, respectively, when focused on infinity, β4tinf and β5tinf representing lateral magnifications of the fourth unit and the fifth unit, respectively, at the telephoto end when focused on infinity, and f3 and f4 representing focal lengths of the third unit and the fourth unit, respectively, satisfy predetermined conditional expressions.. .
05/01/14
20140118605
Zoom lens and image pickup apparatus using the same
3.5≦ltlw/iht≦8.9  (1).. .
05/01/14
20140118603
Zoom lens and image pickup apparatus
The zoom lens includes, in order from an object side to an image side, first, second and third lens units respectively having positive, negative and positive refractive powers, and a rear lens group. The second lens unit and a most-object side lens unit of the rear lens group are moved during zooming, and the first lens unit is not moved for zooming.
04/24/14
20140111870
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative power; and a second lens group having a refractive power, in this order from an object side. The zoom lens satisfies the following conditional formulae: 1.0<d2g/d1g<1.6, 0.08<d2t/ft<0.19, 1.15≦ft/.
04/24/14
20140111869
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative power; and a second lens group having a positive power, in this order from an object side. The first lens group includes a first lens having a negative power and a second lens having a positive power.
04/24/14
20140111628
Focus control device, endoscope device, and focus control method
A focus control device, an endoscope system, a focus control method, and the like can implement an autofocus operation in an appropriate state by setting a focus mode of an imaging optical system. The focus control device includes a focus control section that controls a focus of an imaging optical system that includes at least a zoom lens that adjusts an optical magnification, and sets a focus mode of the imaging optical system, and an image acquisition section that acquires an image through the imaging optical system, the focus mode including a fixed focus mode and an autofocus (af) mode, and the focus control section switching the focus mode between the fixed focus mode and the af mode corresponding to whether the zoom lens is positioned on a wide-angle side or a telescopic side relative to a reference point that is situated between a wide-angle end and a telescopic end..
04/17/14
20140104699
Zoom lens and imaging apparatus
A 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 positive refractive power; and a fourth lens group having a negative refractive power provided in this order from an object side. All of the lens groups move along an optical axis such that the distance between the first lens group and the second group gradually becomes greater, the distance between the second lens group and the third lens group gradually becomes smaller, and the distance between the third lens group and the fourth lens group gradually becomes greater when changing magnification from a wide angle end to a telephoto end.
04/17/14
20140104698
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a positive power; a second lens group having a negative power; a third lens group having a positive power; and a fourth lens group having a negative power, in this order from an object side. All of the groups move along an optical axis such that the distance between the first group and the second group gradually becomes greater, the distance between the second group and the third group gradually becomes smaller, and the distance between the third group and the fourth group gradually becomes greater, when changing magnification from a wide angle to a telephoto end.
04/17/14
20140104697
Zoom lens and imaging apparatus
A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a negative fifth lens group. When varying magnification, the distances between adjacent lens groups are changed, while all of the lens groups are moved with respect to an image formation position.
04/17/14
20140104467
Zoom lens and image pickup apparatus including the same
A zoom lens, including, in order from object side: a positive first unit which is fixed during zooming; a negative second unit which moves for zooming; a positive third unit which moves for zooming; a positive fourth unit which moves for zooming; and a positive fifth unit which is fixed during zooming, in which 1.50<ln(z2)/ln(z34)<2.30 and 0.70<f34w/f34t<0.96 are satisfied, where ln(z2) is natural logarithm of z2 obtained by dividing a lateral magnification β2t of the second unit at telephoto end by a lateral magnification β2w at wide angle end, ln(z34) is natural logarithm of z34 obtained by dividing a combined lateral magnification β34t of the third unit and the fourth unit at telephoto end by a combined lateral magnification β34w at wide angle end, and f34w and f34t are combined focal lengths of the third unit and the fourth unit at wide angle end and telephoto end, respectively.. .
04/10/14
20140098427
Zoom lens barrel assembly and capturing apparatus including the same
A zoom lens barrel assembly includes: a first zoom ring that supports a first lens group; a first guide ring, of which the first zoom ring is disposed on an inner side, is cam-connected to the first zoom ring to cause the first lens group to move linearly along an optical axis direction by rotation; a second zoom ring that supports a second lens group and is cam-connected to the first guide ring to move linearly along the optical axis direction; a second guide ring cam-connected to the first guide ring and configured to move linearly along the optical axis direction to rotate the first guide ring; a second cylinder configured to move linearly along the optical axis direction together with the second zoom ring while being rotated; and an external cylinder including a third lens group and is cam-connected to the second cylinder to cause the second cylinder to rotate.. .
04/10/14
20140098426
Zoom lens and imaging apparatus
A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a negative fifth lens group. When varying magnification, the distances between adjacent lens groups are changed, while all of the lens groups are moved with respect to an image formation position.
04/10/14
20140098253
Zoom lens and image-pickup apparatus
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, and a rear unit including a plurality of lens units. A distance between adjacent lens units changes during zooming.
04/03/14
20140092485
Zoom lens and imaging apparatus
A zoom lens includes: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, provided in this order from an object side. The first lens group includes a first lens having a negative refractive power and a second lens, which is plastic, having a positive refractive power.
04/03/14
20140092484
Zoom lens and imaging apparatus
A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a negative fifth lens group. When varying, the distances between adjacent lens groups are changed, while all of the lens groups are moved with respect to an image formation position.
04/03/14
20140092477
Zoom lens and imaging apparatus
A zoom lens substantially consists of, in order from the object side, a positive first lens group, a negative second lens group, a positive third lens group, a positive fourth lens group, and a negative fifth lens group. When varying magnification, the distances between adjacent lens groups) are changed, while all of the lens groups are moved with respect to an image formation position.


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Zoom Lens topics: Aberration, Conditional, Expressions

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This listing is a sample listing of patent applications related to Zoom Lens for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Zoom Lens with additional patents listed. Browse our RSS directory or Search for other possible listings.
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