Abstract: A converter lens (RCL) has a negative refractive power, which is disposed on an image side of a master lens (ML) to make a focal length of an entire system longer than that of the master lens alone. The converter lens comprises a most image-side lens element (LT) disposed closest to an image side in the converter lens, wherein the most image-side lens element has a lens surface having a convex shape toward an image side, a lens disposed closest to an image side in the converter lens has a positive refractive power, and mN<mP and 0.0?LR2/AR2<1.0 are satisfied.

Abstract: A converter lens according to an exemplary embodiment of the present invention is a converter lens that has a negative refractive power and increases a focal length of an entire system. The converter lens includes a front group having a positive refractive power and a rear group having a negative refractive power, and the front group is a lens unit having a combined refractive power having a maximum positive refractive power in a case where the combined refractive power is obtained by combining a refractive power of each lens in order from the lens closest to an object toward an image side. At this time, a focal length of the front group, a focal length of the converter lens, and a lateral magnification of the converter lens when the converter lens is disposed on an image side of a master lens are determined as appropriate.

Abstract: An optical system LO includes in this order from an object side to an image side, a first lens unit FL, an aperture stop SP, and a second lens unit RL having a positive refractive power. The first lens unit FL includes at least three negative lenses including in order from the object side to the image side, negative lenses (G1N), (G2N), and (G3N). At least one lens surface of the negative lenses (G1N), (G2N), and (G3N) is an aspherical surface that satisfies a predetermined conditional inequality.

Abstract: A data processing system includes an analysis part cache that caches data of a database, a data processing development module that is used by a developer and develops analysis processing for data analysis, a data processing module that is used by the developer and performs data analysis by executing analysis processing, a cache management module that sets an update constraint input from a DB administrator regarding cache update from the database in the analysis part cache, and an update determination module that determines whether or not cache update is possible based on the update constraint, and when cache update is requested, the update determination module executes the requested cache update if cache update is possible in the determination.

Abstract: This invention is intended to process data synchronization more efficiently. Disclosed is a data synchronization system comprising: an all records fetching unit that fetches all records of synchronization target data, i.e., data specified as a target of synchronization, from a first device that is a source of synchronization; one or more storage units to prestore synchronization destination data, namely, data that is now retained on a second device that is a destination of synchronization and store synchronization target data fetched by the all records fetching unit; and a difference extraction unit that identifies difference to be reflected in the data on the second device by using the synchronization destination data and the synchronization target data, makes identified difference reflected in the data on the second device, and, after the reflection, updates the synchronization destination data based on the synchronization target data.

Abstract: A zoom lens includes, in order from an object side to an image side, first, second and third lens units having positive, negative and positive refractive powers. The first lens unit moves during zooming. During zooming from a wide-angle end to a telephoto end, a distance between the first and second lens units widens, and a distance between the second and third lens units narrows. The first lens unit consists of three or less lenses. The second lens unit consists of, in order from the object side to the image side, a first single lens as a spherical lens having a negative refractive power, a cemented lens in which a lens having a negative refractive power and a lens having a positive refractive power are cemented, and a second single lens as a spherical lens having a negative refractive power. A predetermined condition is satisfied.

Abstract: In a computer system for performing linkage control of information between organizations, scenario management information for managing a scenario in which trigger information related to an event related to a user is associated with a target organization as a target of the linkage control accompanying an occurrence of the event is held, and when receiving information from an arbitrary organization, an arithmetic device searches for the scenario including the received information as the trigger information, identifies the target organization based on the scenario and the received information, and transmits shared information generated from the received information to the target organization.

Abstract: It is provided an information linkage system, which is configured to allow a plurality of organizations to register and update data, and is formed of a computer including: a calculation device configured to execute predetermined calculation processing, to thereby implement the following functional modules; and a storage device accessible to the calculation device, the information linkage system comprising: an information linkage control module configured to receive a registration request for data, an update request for data, and an acquisition request for data from a plurality of external systems; an information linkage database in which data is allowed to be registered and updated; an information linkage database access module configured to access the information linkage database in response to a request received by the information linkage control module; and a reliability calculation module configured to calculate reliability information relating to the data stored in the information linkage database.

Abstract: Provided is an optical system consisting of, in order from an object side to an image side: a first lens unit having a negative refractive power; an aperture stop; and a second lens unit having a positive refractive power, in which each of the first lens unit and the second lens unit includes a negative lens. A focal length (fG1N) of a negative lens (G1N) arranged closest to the object side in the first lens unit, a focal length (fGLN) of a negative lens (GLN) having a largest negative refractive power in the second lens unit, a focal length (f) of the optical system, a focal length (f1) of the first lens unit, and other factors are appropriately set.

Abstract: An optical system includes a first lens unit having positive refractive power, a second lens unit, and a third lens unit having negative refractive power arranged in order from an object side to an image side. The second lens unit moves in focusing, thereby changing a distance between adjacent lens units. The first lens unit includes a positive lens, and the third lens unit includes a negative lens. A focal length of the positive lens, a focal length of the negative lens, a focal length of the third lens unit, and a back focus of the optical system are appropriately set.

Abstract: A computer system for controlling data linkage achieves higher rate data transfer between a first system that performs operations and a second system that acquires data regarding the operations reduces influence on the operations and between the systems. The first system includes a storage unit that manages resources storing data and a control unit that controls data transfer and the second system includes a data acquisition unit. The control unit calculates cost that represents a load of the first system with respect to each of multiple data transfer schemes, determines an applicable data transfer scheme based on the cost, and notifies the second system of that scheme. The data acquisition unit manages states associated with the determined data transfer scheme and sends a request to acquire data from resources based on the determined data transfer scheme and the states.

Abstract: 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; and a rear lens group which includes at least one lens unit and has a positive refractive power as a whole. Distances between the adjacent lens units change during zooming. The rear lens group includes a lens P1 that has a positive refractive power and moves at image stabilization so as to have a component perpendicular to the optical axis. The shape factor SFP1 of the lens P1, a curvature radius R1P1 of a lens surface of the lens P1 on the object side, and a curvature radius R2P1 of a lens surface of the lens P1 on the image side are appropriately determined.

Abstract: A computer system for controlling data linkage achieves higher rate data transfer between a first system that performs operations and a second system that acquires data regarding the operations reduces influence on the operations and between the systems. The first system includes a storage unit that manages resources storing data and a control unit that controls data transfer and the second system includes a data acquisition unit. The control unit calculates cost that represents a load of the first system with respect to each of multiple data transfer schemes, determines an applicable data transfer scheme based on the cost, and notifies the second system of that scheme. The data acquisition unit manages states associated with the determined data transfer scheme and sends a request to acquire data from resources based on the determined data transfer scheme and the states.

Abstract: A data collection server that collects and converts data has a data processor that executes shaping processes to shape collected data, sets a data processing flow based on the shaping processes, sets information of an execution environment of the shaping processes and converts the processing flow based on the information of the execution environment. The processor accepts setting inputs of first and second flags before and after the plurality of shaping processes and performs an integrated shaping process for collectively executing the plurality of shaping processes between the first and second flags when set. The processor also updates information of the execution environment based on execution contents of the integrated shaping process.

Abstract: An optical system is constituted of a first lens unit having a positive refractive power, a second lens unit having a positive refractive power and moving when focusing is performed, and a third lens unit which are arranged in this order from an object side to an image side, and distances between neighboring lens units are changed when focusing is performed. In the optical system, a back focus, arrangement of the second lens unit, and the like are appropriately set.

Abstract: An optical system includes a first lens unit B1 having a positive refractive power, a second lens unit B2, and a third lens unit B3 disposed in order from an object side to an image side. The second lens unit B2 moves in focusing so that an interval between adjacent lens units among the first, second, and third lens units changes. The first lens unit B1 includes a positive lens G1p disposed closest to the object side and a negative lens G1n being a closest negative lens with respect to the object side. The optical system satisfies a predetermined condition.

Abstract: A converter lens (RCL) has a negative refractive power, which is disposed on an image side of a master lens (ML) to make a focal length of an entire system longer than that of the master lens alone. The converter lens comprises a most image-side lens element (LT) disposed closest to an image side in the converter lens, wherein the most image-side lens element has a lens surface having a convex shape toward an image side, a lens disposed closest to an image side in the converter lens has a positive refractive power, and mN<mP and 0.0?LR2/AR2<1.0 are satisfied.

Abstract: An optical system LO includes in this order from an object side to an image side, a first lens unit FL, an aperture stop SP, and a second lens unit RL having a positive refractive power. The first lens unit FL includes at least three negative lenses including in order from the object side to the image side, negative lenses (G1N), (G2N), and (G3N). At least one lens surface of the negative lenses (G1N), (G2N), and (G3N) is an aspherical surface that satisfies a predetermined conditional inequality.

Abstract: Provided is an optical system including, 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 configured to move during focusing; and a third lens unit. An interval between each pair of adjacent lens units is changed during focusing. The optical system includes an aperture stop. The first lens unit includes at least three positive lenses including a positive lens (G1P) arranged closest to the object side. A distance LD on an optical axis from a lens surface closest to the object side of the optical system to an image plane, a focal length “f” of the optical system, a refractive index ndG1P of a material of the positive lens (G1P), and an Abbe number ?dG1P of the material of the positive lens (G1P) are each appropriately set.

Abstract: An optical system used in an imaging apparatus includes an optical element. In a case where the optical element is disposed on a magnification side with respect to an intersection point of an optical axis and a chief paraxial ray, the optical element is a negative lens, and in a case where the optical element is disposed on a reduction side with respect to the intersection point, the optical element is a positive lens. The optical element is configured to satisfy all of the following conditional expressions: 30??d?40 1.225?[nd?(14.387/?d)]?1.276 0.4300?[?gF?(2.9795/?d)]?0.5010, where ?d represents an Abbe number of the optical element, ?gF is a partial dispersion ratio of the optical element for g-line and F-line, and nd is a refractive index of the optical element for d-line.