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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, interchangeable lens apparatus and camera system

Zoom lens and imaging apparatus

Date/App# patent app List of recent Zoom Lens-related patents
08/28/14
20140240850
 Zoom lens barrel patent thumbnailnew patent Zoom lens barrel
A lens control apparatus having a zoom lens includes first and second operation members that give a zoom instruction for moving the zoom lens, and a controller that changes a zoom stop position to a first pattern according to the operation of the first operation member, and changes the zoom stop position to a second pattern, which has an interval wider than that in the first pattern, according to the operation of the second operation member.. .
08/28/14
20140240849
 Zoom lens and imaging apparatus patent thumbnailnew patent Zoom lens and imaging apparatus
A zoom lens includes first, second, third, and fourth lens groups respectively having positive, negative, negative, and positive powers. The first lens group includes an 11 lens group having a negative power, which is fixed during focusing operations, a lens group having a positive power, which moves during focusing operations, and a lens group having a positive power, which is fixed during focusing operations.
08/28/14
20140240848
 Zoom lens and imaging apparatus patent thumbnailnew patent Zoom lens and imaging apparatus
3.0<f12/fw<20.0.. .
08/28/14
20140240847
 Zoom lens patent thumbnailnew patent Zoom lens
A zoom lens includes a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group and a sixth 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.
08/28/14
20140240554
 Zoom lens system, interchangeable lens apparatus and camera system patent thumbnailnew patent Zoom lens system, interchangeable lens apparatus and camera system
A zoom lens system comprising a positive first lens unit composed of three or four lens elements, a negative second lens unit, and subsequent lens units, wherein the subsequent lens units include an aperture diaphragm, an image blur compensating lens unit, and a focusing lens unit, which are provided on the image side relative to the aperture diaphragm, and the conditions: 1.8<. .
08/21/14
20140233109
 Structure and method for compensating temperature dependent magnification and focus change patent thumbnailStructure and method for compensating temperature dependent magnification and focus change
A method and device is described for compensating ambient temperature dependent magnification and focus change of a zoom lens system, whereby an ambient temperature compensation structure cooperates with a rotational ring and an optical-element adjusting member such that a phase variation between the rotational ring and the optical-element adjusting member in response to an ambient temperature change is compensated and whereby the phase variation characterizes an optical property of the zoom lens system such as magnification or focus.. .
08/21/14
20140232907
 Image sensing apparatus and method of controlling same patent thumbnailImage sensing apparatus and method of controlling same
If zoom magnification falls within an optical-zoom application scaling range of zoom magnifications z1 to z2, image data that has been enlarged by a zoom lens is recorded on a recording medium. If zoom magnification falls within an electronic-zoom application scaling range of zoom magnifications z2 to z3, the image data is subjected to super-resolution processing, super-resolution image data and image data that has not been subjected to super-resolution processing are combined by weighting processing executed such that the higher the zoom magnification, the greater the weight assigned to the super-resolution image data, and the resultant image data is subjected to electronic zoom processing and then recorded.
08/14/14
20140226219
 Projection zoom lens and projection type display device patent thumbnailProjection zoom lens and projection type display device
A negative first lens group, a positive second lens group, a negative third lens group, a positive fourth lens group, a negative fifth lens group, and a positive sixth lens group are disposed in this order from the magnification side. The reduction side is made telecentric.
08/14/14
20140226218
 Projection zoom lens and projection type display device patent thumbnailProjection zoom lens and projection type display device
A projection zoom lens has a negative first lens group which is fixed when changing magnification, second through fifth lens groups that move when changing magnification, and a positive sixth lens group which is fixed when changing magnification, in this order from a magnification side. The reduction side is telecentric.
08/14/14
20140226217
 Zoom lens for projection and projection-type display apparatus patent thumbnailZoom lens for projection and projection-type display apparatus
70°≧2ω  (7).. .
08/07/14
20140218939
Zoom lens with multi-layers for illumination
The zoom lens with multi-layers for illumination mainly comprises a lens body that has at least one free curved surface on a side. The free curved surface is designed to be multiple zoom curved surfaces with multiple layers.
08/07/14
20140218808
Zoom lens
A zoom lens comprises a first lens unit g1 having a positive refractive power, a second lens unit g2 having a negative refractive power, a third lens unit g3 having a positive refractive power, a fourth lens unit g4 having a negative refractive power, a fifth lens unit g5, and a sixth lens unit g6 having a positive refractive power. Zooming from a wide angle end to a telephoto end is carried out by changing a distance between the lens units, and a distance between the first lens unit g1 and the third lens unit g3 narrows at the telephoto end than at the wide angle end, and the first lens unit g1 is stationary at the time of zooming from the wide angle end to the telephoto end, and lens units from the second lens unit g2 to the fifth lens unit g5 move..
08/07/14
20140218807
Zoom lens assembly with end of travel sensors
Zoom lens assembly formed of a number of lens groups on a track. The lens groups can be moved on the track to form different lens effects such as zoom.
08/07/14
20140218800
Zoom lens
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, a third lens group having a positive refractive power, a fourth lens group having a negative refractive power, a fifth lens group having a positive refractive power, and a sixth lens group having a negative refractive power. The zoom lens varies the interval between the lens groups to perform zooming; shifts the second lens group in a direction substantially orthogonal to the optical axis to correct image blur occurring with optical system vibrations; and satisfies given conditions, enabling a compact size and a high zoom ratio to be achieved while improving imaging performance..
07/31/14
20140211082
Zoom lens system, interchangeable lens apparatus and camera system
A zoom lens system comprising: a negative first lens unit including at least one positive lens element; a positive second lens unit including at least one negative lens element; and subsequent lens units including an aperture diaphragm, wherein the subsequent lens units include a most-image-side lens unit fixed to an image surface in focusing, a first focusing lens unit is provided between the aperture diaphragm and the most-image-side lens unit, and the conditions: 1.0<lsw/{ft×tan(ωt)}<2.6 and 0.8<lg1g2/fw<2.8 (lsw: axial distance from aperture diaphragm to image surface at wide-angle limit, ft: focal length of entire system at telephoto limit, ωt: half view angle at telephoto limit, lg1g2; axial distance between most-image-side lens element in first lens unit and most-object-side lens element in second lens unit at wide-angle limit, fw: focal length of entire system at wide-angle limit) are satisfied.. .
07/31/14
20140211074
Zoom lens and image pickup 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 having a positive refractive power, and a fourth lens unit having a negative refractive power, and includes an aperture stop which is disposed between the second lens unit and the fourth lens unit, and the first lens unit includes a negative lens and a plurality of positive lenses, and at the time of zooming from a wide angle end to a telephoto end, a distance between the first lens unit and the second lens unit widens, a distance between the second lens unit and the third lens unit narrows, and a distance between the third lens unit and the fourth lens unit changes, and the zoom lens satisfies predetermined conditional expressions.. .
07/31/14
20140211029
Zoom lens and image pickup apparatus including the same
A zoom lens including, in order from an object side; a positive first lens unit, a negative second lens unit; and a positive third lens unit, in which: an interval between the first and second lens units is increased, and an interval between the second and third lens units is decreased during zooming from a wide angle end to a telephoto end; the second lens unit is an image stabilizing lens unit which moves with a component of motion in a direction perpendicular to an optical axis whereby an imaging position is moved in the direction of motion perpendicular to the optical axis; and a focal length of an entire system at the wide angle end, a focal length of the first lens unit, and a movement amount of the first lens unit during zooming from the wide angle end to the telephoto end are each set appropriately.. .
07/24/14
20140204470
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.
07/24/14
20140204469
Zoom lens
A zoom lens includes an external frame, a rotary shaft, an internal frame, a lens group and a spring. The internal frame is connected to the external frame via the rotary shaft, so that the internal frame is rotatable relative to the external frame.
07/24/14
20140204264
Zoom lens and image pickup apparatus including the same
A zoom lens includes, in order from an object side to an image side: a positive first lens unit; a positive second lens unit; and an aperture stop disposed between the first and second lens units and moving along a locus different from loci of the first and the second lens units during zooming, the first and second lens units being configured to change an interval therebetween during zooming, the second lens unit including at least one positive lens and at least one negative lens. A distance from a lens surface closest to the object side in the entire system to the aperture stop at a wide angle end, and a distance from the lens surface closest to the object side in the entire system to a lens surface closest to the object side in the second lens unit at the wide angle end are each appropriately set..
07/24/14
20140204252
Zoom lens and image pickup apparatus including the same
A zoom lens including, in order from an object side, positive, negative, positive, positive, and positive lens units, or positive, negative, positive, positive, positive, and positive lens units. 1.5<l2fm/l2w<500; −30<f3/f2<−3; and −15<f1/f23w<−8 are satisfied, where fm=fw×(z)1/2, fw represents a local length of the entire system at a wide angle end, z represents a zoom ratio, l2w represents an interval between a second and third lens units at the wide angle end, l2fm represents an interval between the second and third lens units at a zoom position at which an offaxial principal ray having a largest enrage height is highest in a zoom range from the wide angle end to the focal length fm, f1, f2 and f3 respectively represent focal lengths of the first, second, and third lens units, and f23w represents a combined focal length of the second and third lens wait at the wide angle end..
07/17/14
20140198394
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
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
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
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
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
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
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
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
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
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).. .


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Zoom Lens topics: Aberration, Conditional, Expressions

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