517 results about "Conditional expression" patented technology

The invention discloses a human resource data natural language query and SQL generation method and system, and relates to the technical field of SQL generation, and the method comprises the steps: preprocessing a natural language query text input by a user, and constructing a query semantic tree; traversing the query semantic tree to generate a candidate entity set, determining an unambiguous entity through a three-layer ambiguity resolution mechanism of semantic scoring, service verification and cross validation, identifying a composite intention, disassembling the composite intention into a sub-intention sequence, and generating an SQL operation instruction set in combination with a preset SQL operation mapping rule; based on the SQL operation instruction set and the human resource data association model, determining a data table set and an association path, generating a dynamic calculation logic and structured condition expression, and constructing a structured query skeleton; according to the method, the personalized SQL template is dynamically generated according to the query skeleton, after filling, grammar verification, strategy optimization and logic consistency verification are performed, and the optimized SQL statement is output, so that the query accuracy and performance are remarkably improved.

The present application relates to the technical field of electric digital data processing, and provides a data preparation method, system, and device for AIGC-based interaction analysis, and a medium. The method comprises: by means of a pre-trained text label recognition model, determining a label sequence corresponding to an interaction statement having experienced first word segmentation processing; on the basis of a preset expression construction rule, determining a label combination sequence corresponding to the label sequence and a conditional expression corresponding to the label combination sequence; by means of a preconfigured database candidate text dictionary and a preset matching rule, determining a strictly matched keyword and a fuzzily matched keyword corresponding to the interaction statement having experienced second word segmentation processing; on the basis of the strictly matched keyword and a similar candidate text corresponding to the fuzzily matched keyword, determining a word segmentation result corresponding to the second word segmentation processing; on the basis of a plurality of preset SQL statement rule matching templates, generating an interaction SQL query statement, so as to determine, on the basis of the interaction SQL query statement, interaction response information corresponding to the interaction statement.

The invention discloses a complex SQL query dynamic rewriting method based on AST and a server, and relates to the field of data rewrite.The method comprises the steps that in response to a received target database type, an original SQL query statement is analyzed into AST; an SQL processor is initialized; recursively traversing a selection statement structure of the main query, and recursively traversing a sub-query structure nested in the selection statement structure; recursively traversing each selected statement structure in the joint query; recursively traversing conditional expressions in the updated statements, the deleted statements and the inserted statements or nesting and selecting statement structures; converting the rewritten AST into an SQL (Structured Query Language) query statement after dynamic rewriting; and returning the dynamically rewritten SQL query statement, and rewriting the SQL expression and the SQL statement structure in the AST according to a preset dynamic modification logic. The technical problem that a complex nested structure cannot be processed in a traditional SQL enhancement or modification mode can be effectively solved.

The zoom lens consists of, in order from the object side, a first lens group that has a negative refractive power; a second lens group that has a positive refractive power; a third lens group that has a negative refractive power; and a fourth lens group that has a positive refractive power. During zooming, in each lens group, distances between the adjacent groups in the direction of the optical axis are changed. The first lens group consists of, in order from the object side, a first lens having a negative refractive power, a second lens having a negative refractive power, and a third lens having a positive refractive power. The third lens group consists of a negative lens. During focusing, only the third lens group moves along the optical axis. The zoom lens satisfies predetermined conditional expressions.

An optical system comprises a first lens group having positive refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power, arranged in order from an object side, wherein, when focusing, the second lens group moves along an optical axis, and the optical system satisfies the conditional expressions 0.100<BFa / f<0.500 and −5.000<(−G1R1) / f<500.000, where BFa is an air equivalent distance on the optical axis between a lens surface on an image side of a lens disposed closest to an image and the image, f is a focal length of the optical system, and G1R1 is a radius of curvature of a lens surface on the object side for a lens component disposed farthest on the object side in the first lens group.

The invention discloses a compact internal focusing wide-angle photographic lens and a photographic device. The lens sequentially comprises a first lens group with positive focal power, an aperture diaphragm, a second lens group with positive focal power and a third lens group with negative focal power from an object side to an image side, in the focusing process, the second lens group moves along the optical axis, and the first lens group and the third lens group remain unchanged relative to the position of the image plane. The first lens group, the second lens group and the third lens group satisfy the following conditional expressions: 1.5 < = F1 / F < = 3.5; 1 < = F2 / F < = 2; -3 < = F3 / F < =-1; wherein F1 represents the composite focal length of the first lens group, F2 represents the composite focal length of the second lens group, F3 represents the composite focal length of the third lens group, and F represents the focal length of the photographic lens. The compact internal focusing type wide-angle photographic lens provided by the technical scheme of the invention is beneficial to optimizing the optical performance of the lens, simplifying the focusing mechanism and simplifying the design and manufacturing.

The invention discloses a large-aperture internal focusing type standard photographic lens and a photographic device. The lens sequentially comprises a first lens group with positive focal power, an aperture diaphragm, a second lens group with positive focal power and a third lens group with negative focal power from an object side to an image side, in the focusing process, the second lens group moves along the optical axis, and the first lens group and the third lens group remain unchanged relative to the position of the image plane. The first lens group, the second lens group and the third lens group satisfy the following conditional expressions: 1 < = F1 / F < = 3; 0.5 < = F2 / F < = 1.5; -5 < = F3 / F < =-3; wherein F1 represents the composite focal length of the first lens group, F2 represents the composite focal length of the second lens group, F3 represents the composite focal length of the third lens group, and F represents the focal length of the photographic lens. The large-aperture internal focusing type standard photographic lens provided by the technical scheme of the invention is beneficial to optimization of optical performance, focusing mechanism, balance of positive and negative focal power and simplification of design and manufacturing of the lens.

An imaging lens consists of, in order from an object side, a front group, a stop, and a rear group. The front group includes, in successive order from a side closest to the object side, a first lens that is a negative lens having a concave surface facing an image side and a second lens that is a negative lens having a concave surface facing the image side. Two or less focus lens groups are disposed on the image side with respect to the second lens. During focusing, the two or less focus lens groups move along an optical axis, and lenses other than the two or less focus lens groups are fixed with respect to an image plane. The imaging lens satisfies a predetermined conditional expression.

The illumination optical system is disposed at a distal end of a light guide of an endoscope. A first surface that is a surface of the illumination optical system closest to a light guide side includes a plurality of ring-shaped groove portions that are arranged in a concentric circular shape about an optical axis of the illumination optical system. The groove portions have an inclined surface that narrows a groove width from the light guide side toward an irradiation target side. In the first surface, all surfaces that are perpendicular to the optical axis and adjacent to the inclined surfaces of the groove portions are light diffusion surfaces. The light diffusion surfaces include first light diffusion surfaces that are present between the groove portions adjacent to each other. The illumination optical system satisfies a predetermined conditional expression.

The invention discloses a condition analysis execution method and device based on dynamic configuration and computer equipment. The method comprises the following steps: acquiring a condition expression and corresponding data; constructing a logic tree structure; traversing condition items; judging whether the condition item is a leaf node or not; if yes, inquiring an operator registration library to determine whether an operator exists or not; if yes, executing an operation method, and performing type self-adaptive processing to obtain a Boolean result; recording Boolean results; judging whether the current condition item is the last condition item or not; if yes, applying root logic to output a result; if not, performing exception handling; and if the condition item is not the leaf node, recursively processing the sub-conditions, aggregating results obtained by processing to obtain a Boolean result, and recording the Boolean result. By implementing the method provided by the invention, flexible and easy-to-maintain condition processing capability can be provided, and the problems of framework rigidity, high maintenance cost, function limitation and the like in the prior art are effectively solved.

An imaging optical system (100) includes, in order from an object side to an image side, a front group (110), an aperture (130), and a rear group (120). The front group (110) is configured from a plurality of lenses including the first lens (10) disposed closest to the object side. The rear group (120) is configured from a plurality of lenses. The first lens (10) has a negative refractive power. When the total length of the entire lens system is d0, the effective radius of the object-side lens surface (11) of the first lens (10) is sd11, and the maximum image height is IH, the following conditional expressions are satisfied: 3.000 < d0 / sd11 < 4.500 (1); and (2) d0 / IH is greater than 2.500 and less than 5.000.

An imaging optical system includes, in order from an object side to an image side, a first lens group, a second lens group, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group having a negative refractive power, in which, when focusing from an infinite distance object to a close distance object, the first lens group remains stationary with respect to an image surface, the second lens group moves to the object side along an optical axis, the third lens group remains stationary with respect to the image surface, the fourth lens group moves to the object side along the optical axis, and the fifth lens group remains stationary with respect to the image surface, the imaging optical system includes an aperture diaphragm, and the imaging optical system satisfies a predetermined conditional expression.

The invention discloses an optical lens, which is characterized by sequentially comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side along an optical axis, the second lens has negative focal power; the third lens has negative focal power; the fourth lens has positive focal power; the fifth lens has positive focal power; the sixth lens has negative focal power; the seventh lens has positive focal power; the eighth lens has positive or negative focal power; a ninth lens having negative or positive focal power; the tenth lens has negative focal power; the eleventh lens has positive focal power; the twelfth lens has negative focal power; the thirteenth lens has negative or positive focal power; the number of lenses with focal power in the optical lens is thirteen. The optical lens satisfies the following conditional expressions: 3.497 < = F89 / F < = 6.061; wherein F89 is the combined effective focal length value of the eighth lens and the ninth lens, and F is the total effective focal length value of the optical lens.

A measuring apparatus includes an illuminator and a light receiver. The illuminator includes a light source to emit a light beam to an object conveyed in a conveyance direction; and a diffuser plate to diffuse the light beam emitted from the light source to illuminate a surface of the object with a diffused light beam. The light receiver receives reflection light specularly reflected from the surface of the object illuminated by the illuminator. A conditional expression below is satisfied:L1>L2whereL1 denotes a distance between the light source and the diffuser plate, andL2 denotes a distance between the diffuser plate and the surface of the object.

This variable magnification optical system is configured to include, in order from an object side: a front group which includes at least one lens group having negative refractive power; and a rear group which includes a plurality of lens groups and has positive refractive power as a whole, and in which a lens group arranged closest to the object side among the plurality of lens groups is a rear-side first lens group having positive refractive power, wherein during variable magnification, a front-side first lens group arranged closest to the object side among the at least one lens group of the front group is fixed to an image surface, and an interval between adjacent lens groups changes, thereby satisfying the following conditional expression.　0.01<(-fGFw) / fGR1<0.83, where fGFw is the focal length of the front group at the wide-angle end, and fGR1 is the focal length of the rear-side first lens group.

The invention discloses a compact internal focusing type standard photographic lens and a photographic device. The lens sequentially comprises a first lens group with positive focal power, an aperture diaphragm, a second lens group with positive focal power and a third lens group with negative focal power from an object side to an image side, in the focusing process, the second lens group moves along the optical axis, and the first lens group and the third lens group remain unchanged relative to the position of the image plane. The first lens group, the second lens group and the third lens group satisfy the following conditional expressions: 2 < = F1 / F < = 4; 0.7 < = F2 / F < = 2; -4 < = F3 / F < =-2; wherein F1 represents the composite focal length of the first lens group, F2 represents the composite focal length of the second lens group, F3 represents the composite focal length of the third lens group, and F represents the focal length of the photographic lens. The compact internal focusing type standard photographic lens provided by the technical scheme of the invention is beneficial to optimization of optical performance, focusing mechanism, positive and negative focal power balance and simplification of design and manufacturing of the lens.

The utility model discloses a visual system. The visual system comprises a first lens cone and a second lens cone which are sequentially arranged from a first side to a second side along an optical axis, and a first lens group and a second lens group which are respectively supported on the two lens cones, the first lens group sequentially comprises a first lens, a reflective polarizing element and a quarter-wave plate, and the second lens group sequentially comprises a second lens, a partial reflection element and a third lens; the focal power of the first lens and the second lens is positive, the surface types of the first lens and the third lens are convex and concave-convex respectively, and the second side surface of the second lens is a convex surface; the second lens and the third lens are glued; the second lens group can move along the optical axis to be close to or far away from the display on the second side, so that the system is switched between the first state and the second state; the visual system satisfies the following conditional expressions: 0.33 < = (fz / f23) * (La / Lb) < = 1.10 and 0.75 mmlt; (dbs / dam) * [delta] flt; and the thickness is 1.95 mm.

An optical system comprises a first lens group having positive refractive power, a second lens group having positive refractive power, and a third lens group having negative refractive power, arranged in order from an object side. When focusing, the second lens group moves along an optical axis. The optical system satisfies the following conditional expression0.30<{1−(β2)2}×(β3)2<2.00where β2 is a lateral magnification of the second lens group for a state of focusing on infinity, andβ3 is a lateral magnification of the third lens group.

The invention provides an imaging optical system suitable for a large aperture ratio telephoto lens which is light in weight and in which chromatic aberration on the axis is well corrected. This imaging optical system is configured from a first lens group (G1), a second lens group (G2), and a third lens group (G3), which are arranged in this order from the object side and have positive refractive power, only the second lens group (G2) moves when focusing from an object at infinity to an object at a close distance, the first lens group (G1) is configured from a group 1a and a group 1b arranged in this order from the object side, and the third lens group (G3) is configured from a group 1b and a group 1b arranged in this order from the object side. The 1b group has a meniscus-shaped negative lens (L1na) having a convex surface facing the object side and a negative lens (L1nb) different from the negative lens (L1na), the negative lens (L1na) being a negative lens located closest to the object side in the first lens group (G1), and the imaging optical system satisfies a predetermined conditional expression.

The imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens sequentially disposed along an optical axis of the imaging lens system from an object side of the imaging lens system toward an imaging plane of the imaging lens system, in which the second lens has a positive refractive power and is made of a glass material, and the fifth lens is made of a plastic material, the imaging lens system satisfies a conditional expression f number lt; the f number is the f number of the imaging lens system.

A phase difference sheet including a substrate and a phase difference film as a tilt film, wherein, in a biaxial refractive index ellipsoid exhibiting a refractive index anisotropy, of three principal refractive indexes nx, ny, nz, the principal refractive index in the length direction of a columnar structure, i.e., the X-axis direction, is nx, the principal refractive index in the major axis direction of an ellipse perpendicular to the X-axis, i.e., the Y-axis direction, is ny, and the principal refractive index in the minor axis direction, i.e., the Z-axis direction, is nz, the following conditional expression (1) is satisfied, and, in a case where the incident angle of a direction tilted to the X-axis side with the normal as a reference is positive, the phase difference of incident light at an incident angle of +30° is Re(+30), the phase difference of incident light at an incident angle of -30° is Re(-30), and the ratio of Re(+30) to Re(-30), i.e., the phase difference ratio, is Re(30) ratio, the following conditional expression (2) is satisfied, ny > nx > nz (1), Re(30) ratio = Re(30) / Re(-30) = 1.1 to 4.0 (2).

The variable magnification optical system (ZL) has a plurality of lens groups including a first lens group (G1) disposed closest to the object side and having a positive refractive power and a final lens group (GL) disposed closest to the image surface side and having a negative refractive power, the plurality of lens groups having at least six lens groups, and when changing magnification, the first lens group (G1) and the final lens group (GL) each have a positive refractive power and a negative refractive power. The variable magnification optical system (ZL) satisfies the following conditional expression: 2.00 < f1 / (-fL) < 20.00, where f1 is the focal length of the first lens group (G1), and fL is the focal length of the final lens group (GL).

The invention provides a numerical controller for controlling a machine, which is capable of efficiently avoiding interference of interferents. A numerical controller (100) is provided with: a graph generation unit (101) that generates a mechanical structure to be controlled in a graph form; a control point coordinate system insertion unit (102) that inserts a control point and a coordinate system into the mechanical structure in the form of a graph; an inter-element condition setting unit (112) that sets the shape of the interfering object in the inter-element relationship as an inter-element condition that the relationship between a first element, which is a first control point, and a second element, which is a second control point, should be satisfied; an inter-element relationship output unit (114) that outputs, on the basis of the inter-element conditions set in the inter-element relationship (113), an interference conditional expression (interference boundary) for preventing interference from occurring in the interfering object; and an inter-element relationship control unit (115) that controls the relationship between the elements on the basis of the inter-element relationship (113) and the conditional expression.

An electronic device is provided. The electronic device includes a first imaging optical system including a first image sensor, and a second imaging optical system including a second image sensor, a reflective member, a first lens group, a second lens group, and a third lens group, the first, second, and third lens groups being sequentially arranged from the reflective member to the second image sensor, the second and third lens groups being configured to slide with respect to the first lens group, and the first and second imaging optical systems being configured to satisfy a conditional expression SSW / SST>2, where SSW denotes a size of the first image sensor and SST denotes a size of the second image sensor.

An observation optical system includes a display element and an eyepiece lens disposed on an eyepoint side of the display element. The eyepiece lens includes a first lens having positive optical power, a second lens having negative optical power, and a third lens consecutively in order from closest to a display element side to the eyepoint side. In a case where a half value of a longest diameter of a display region in the display element is denoted by H, and a focal length of the eyepiece lens in a state where diopter is −1 diopter is denoted by f, the observation optical system satisfies a conditional expression represented by 0.35<H / f<0.6.

The invention provides an imaging lens which is small in size and maintains good optical performance and an imaging device provided with the imaging lens. The imaging lens includes, in order from an object side to an image side, a first lens group, an aperture, and a second lens group. The second lens group includes two or more lenses satisfying the following conditional expression, where f is the focal length of the imaging lens in a state in which the imaging lens is focused on an infinite object, and Rf is the radius of curvature of the object-side surface of the lens included in the imaging lens. -15 < f / Rf <-0.5

The utility model relates to an optical imaging system. The optical image capturing system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens disposed in order from an object side, in which a conditional expression TTL / (2 * IMG HT) < = 0.57 is satisfied, where TTL is a distance from an object side surface of the first lens to an image plane along an optical axis, and IMG HT is half a diagonal length of the image plane.

The imaging lens includes, in order from an object side to an image side, a first lens group, a second lens group, and a third lens group having positive refractive power. During focusing, the interval between the first lens group and the second lens group changes, and the interval between the second lens group and the third lens group changes. The imaging lens satisfies a preset conditional expression.

According to certain embodiments disclosed herein, a lens assembly and / or an electronic device including the same may include an image sensor, and first to ninth lenses sequentially arranged along an optical axis. The first lens may include a convex object side surface while having positive refractive power, the second lens may include a concave image sensor side surface while having negative refractive power, the third lens may have positive refractive power, and the eighth lens may have has negative refractive power and may include an object side surface and an image sensor side surface, at least one of which is an aspherical surface including at least one inflection point. The lens assembly and / or the electronic device may satisfy Conditional Expression 1: 20≤v3≤40 and Conditional Expression 2: 1.7≤Fno≤2.0. Here, “v3” may be an Abbe number of the third lens, and “Fno” may be an F-number of the lens assembly. Various other embodiments are possible.

The imaging lens includes, in order from an object side, a first lens group that has a refractive power, a second lens group that has a positive refractive power, and a third lens group that has a negative refractive power. During focusing, the second lens group moves. The second lens group includes a stop and at least three negative lenses. The imaging lens satisfies predetermined conditional expressions.