Abstract: At least one exemplary embodiment is directed to a zoom lens system, which can have a diffractive optical element, achieves high optical performance over a wide zoom range. The zoom lens system includes a first lens unit having positive optical power, a second lens unit having negative optical power, and a rear lens component including at least one lens unit having positive optical power. The first lens unit, the second lens unit, and the rear lens component are arranged in that order from an object side towards an image side of the zoom lens system. The diffractive optical element is included in the first lens unit. The rear lens component is provided with a positive lens element having extraordinary dispersion characteristics.

Abstract: At least one exemplary embodiment is directed to a zoom lens system which includes, in order from an object side to an image side, a first lens unit of positive optical power, a second lens unit of negative optical power, a third lens unit of positive optical power, and a fourth lens unit of positive optical power. At least the second and fourth lens units are moved for zooming. The third lens unit includes, in order from the object side to the image side, three lens elements, a positive lens element, a negative lens element, and a positive lens element. The fourth lens unit includes, in order from the object side to the image side, two lens elements, a positive lens element and a negative lens element. The above-described configuration of the zoom lens system allows appropriate setting of the imaging magnification of the fourth lens unit and the focal lengths of the third and fourth lens units.

Abstract: An exemplary embodiment is directed to a zoom lens system configured to impart an appropriate refractive power to an image stabilizing lens unit. The zoom lens system can include: a first lens unit; a second lens unit; and a rear lens group. The plurality of lens units constituting the rear lens group can contain a lens component, where the lens component can include: a front lens sub-component; and a rear lens sub-component. Moreover, in at least one further exemplary embodiment at least a part of the front lens sub-component or the rear lens sub-component can be moved.

Abstract: At least one exemplary embodiment is directed to a zoom lens which includes, in order from an object side to an image side, a first lens unit, which can have a negative refractive power; a second lens unit, which can have a positive refractive power; and a third lens unit, which can have a negative refractive power. The second and third lens units can move in zooming. The first, second, and, third lens units can satisfy the following conditions: 1.2<|?1/?T|<2 0.9<?2/?T<2.2 0.75<?3/?1<1.2 wherein ?1, ?2, and ?3 are the refractive powers of the first, second, and third lens units, respectively, and ?T is the refractive power of the zoom lens at a telephoto end.

Abstract: An information processing method according to the present invention for editing multimedia content including metadata includes a receiving step and a determining step. In the receiving step, operation information about an editing operation is received. In the determining step, it is determined whether or not the metadata is usable for the edited multimedia content in accordance with the operation information and a property of the metadata in which a change in the reliability of the metadata due to the editing operation is written.

Abstract: At least one exemplary embodiment is directed to a zoom lens system which includes a first lens unit having a positive optical power, a second lens unit having a negative optical power and positioned on the image side of the first lens unit, a third lens unit having a positive optical power and positioned on the image side of the second lens unit, a fourth lens unit having a positive optical power and positioned on the image side of the third lens unit, and an F-number determining member. The F-number determining member can be positioned between a vertex of an object-side lens surface of a lens that is nearest to an object side in the third lens unit and an intersecting point of the object-side lens surface and a peripheral portion of the lens in a direction of an optical axis.

Abstract: In an optical system, there is disposed a solid material having refractive surfaces on both of the light incidence side and a light emergence side, and the Abbe number vd and the partial dispersion ratio ?gF satisfy the conditions: ?2.100×10?3·vd+0.693<?gF; and 0.555<?gF<0.6.

Abstract: A zoom lens system includes a front lens group and a rear lens group arranged from an object side to an image side in that order. The front lens group includes a plurality of lens units, and during zooming from a wide angle end to a telephoto end, imaging magnification is increased by changing spaces between the plurality of lens units. The rear lens group with positive optical power as a whole includes a lens unit IS with negative optical power being movable so as to have a direction perpendicular to an optical axis, and a lens component RB2 with positive optical power disposed on the image side with respect to the lens unit IS. A space between the lens unit IS and the lens component RB2 is changed during zooming. The following condition is established to satisfy: 0.05<|fis|/ft<0.25, wherein (fis) denotes a focal distance of the lens unit IS, and (ft) denotes a focal distance at the telephoto end of the zooming lens system.

Abstract: An image forming apparatus writes job information associated with an image forming process to a contactless integrated chip attached to recording paper and reads out the job information from the contactless integrated chip attached to recording paper remaining uncollected after completion of the image forming process. Thereafter, the image forming apparatus notifies, based on the read out job information, the user that initiated the job that the recording paper is uncollected after completion of the image forming process.

Abstract: An apparatus providing a light-emitting unit for emitting a first light beam to an object and an imaging unit for capturing a first image representing the profile of the first light beam on the surface of the object and a second image representing the spectrum of the reflected first light beam.

Abstract: An apparatus for generating a quantum state of a two-qubit system including two qubits, each qubit being represented by a particle which invariably travels through one of two paths, includes a quantum gate composed of an interferometer for implementing an-interaction-free measurement. The apparatus receives two particles having no correlation and generates a Bell state with asymptotic probability 1. A Bell measurement of a state of a two-qubit system is performed by observing a quantum gate composed of the interferometer after the quantum gate has processed the state and selecting the state from the Bell bases. An approximate fidelity of a quantum gate composed of the interferometer is calculated, if an absorption probability with which a first particle absorbs a second particle in the interferometer is less than 1, under the condition that the number of times the second particle hits beam splitters in the interferometer is sufficiently large.

Abstract: A zoom lens comprises, from the object side to the image side, a first lens group, a second lens group, and a rear group including one or more lens groups, where the first and second lens groups can move at the time of zooming, and wherein the first lens group comprises, from the object side to the image side, a first lens of negative refractive power, and a second lens of positive refractive power.

Abstract: A guide bar used in a video lens barrel in the related art has problems of deterioration in supporting accuracy of the lens retaining frame, high manufacturing cost, and upsizing of the lens barrel. Also, in a cam pin type lens barrel, how the lens retaining frame is supported by the cam pins may not be clear. Therefore, by providing a plurality of guiding members on the inner surface of the fixed barrel of the lens barrel, and allowing a plurality of engaging portions on the lens retaining frames to engage the guiding members, the lens retaining frames are supported so as to be capable of moving in the direction of the optical axis. By differentiating the length of engagement of the respective engaging portions, the roles of the respective engaging portions on the lens retaining frames for supporting the lens unit in a space are clarified.

Abstract: A zoom lens system including, from the object side to the image side, a first lens unit and a second lens unit, where when zooming, the distance between the first lens unit and the second lens unit changes. In at least one exemplary embodiment, the first lens unit includes a first lens element having negative optical power, and a second lens element having positive optical power.

Abstract: An optical scanner includes a light source (1) that emits a light beam, a light deflector (6), an incident optical system (5) that allows the light beam to impinge on the light deflector such that the width of the light beam in the main scanning direction is larger than the width of each deflecting surface of the light deflector in the main scanning direction, and a focusing optical system (8) that guides the light beam deflected by the light deflector to a surface to be scanned. The incident optical system and the focusing optical system are constructed such that aberrations occurring in the two optical systems when a light beam impinges on the surface to be scanned at an off-axis image height are asymmetrical on both sides of the center of the light beam and the directions of the aberrations are opposite to each other.

Abstract: A zoom lens includes a plurality of lens groups including a first lens group arranged on the foremost side and having negative optical power. Zooming is performed by moving at least one of the plurality of lens groups along a direction parallel to an optical axis of the zoom lens. The first lens group is fixed during the zooming. A first lens arranged on the foremost side, of the first lens group has negative refractive power. When an Abbe constant and a partial dispersion of a material configuring the first lens are respectively represented by ?dn and ?g,Fn, a focal distance of the first lens group is represented by f1, and an air-equivalent back focus upon focusing on an infinity object is represented by bf, the following conditions are satisfied: ?dn<32, 0.008<?g,Fn?(0.644?0.00168×?dn)<0.040, and |f1/bf|<0.9.

Abstract: A focus adjusting system includes an optical unit movable to adjust a focus of an object image to an image capture unit for imaging an object to produce a signal representative of the object image, a detection unit for extracting, as a first signal, a high-frequency component of the signal produced by the image capture unit, a moving unit for moving the optical unit a first amount of movement so as to cause the first signal to reach a maximum value, and a changing unit for changing the first amount of movement according to a quantity of image shake of the object image occurring in the image capture unit.