733 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.

An image formation lens (IL) for a microscope comprises: a negative lens; and a positive lens (L13) that satisfies the following conditional expression:-0.002×(ν⁢dP-35)+0.602-θ⁢gFP<023<ν⁢dP<65where vdP: an Abbe number of the positive lens, and θgFP: a partial dispersion ratio of the positive lens that is defined by the following expression: θgFP=(ngP−nFP) / (nFP−nCP) where ngP is a refractive index of the positive lens to a g-line, nFP is a refractive index of the positive lens to an F-line, and nCP is a refractive index of the positive lens to a C-line.

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 imaging lens system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, sequentially arranged from an object side. The seventh lens has a convex image-side surface, the eighth lens has positive refractive power, and the imaging lens system satisfies the following conditional expression: 1.10<f3 / f<1.40, where f is a focal length of the imaging lens system, and f3 is a focal length of the third lens.

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.

The invention provides a variable magnification optical system which is compact and light in weight and maintains good optical performance in the whole variable magnification area, and an imaging device provided with the variable magnification optical system. The variable magnification optical system includes, in order from an object side to an image side, a first lens group having a negative refractive power, a second lens group having a positive refractive power, and a subsequent group including one or more lens groups. When changing magnification, the first lens group moves, and all intervals between adjacent lens groups change. One of the lens groups included in the subsequent group is a focusing lens group that moves along the optical axis at the time of focusing. The variable magnification optical system satisfies a preset conditional expression.

An optical lens (100), an image module (200), and a terminal device (400) are provided. An optical lens (100) includes: a first lens (L1), a fourth lens (L4) and a sixth lens (L6) each having negative refractive power, and a second lens (L3), a third lens (L4), and a fifth lens (L5), each having positive refractive power. The optical lens (100) satisfies following conditional expressions: 6.5<TTL / IMGH<7.2, and 1.9<TTL / F<2.2, TTL is a distance from the object side surface (S1) of the first lens (L1) to the image plane (IMG) of the optical lens (100) along the optical axis (O), IMGH is half of an image height corresponding to the maximum field of view of the optical lens (100), and F is a focal length of the optical lens (100). The optical lens (100) can realize the miniaturization design and have high imaging quality at the same time.

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.

An imaging optical system according to the present disclosure includes: an aperture stop; an image-forming optical system that causes an image to be formed toward an imaging plane of an image sensor; and an optical phase modulator that includes a substance having a birefringence index, and gives two pupil functions to the image-forming optical system. The following conditional expressions are satisfied:1≤(2×L×tan(w)+D) / D<1.4  (1)λ / 4*0.75<Re<λ / 4*1.1  (2), whereL: a distance between the aperture stop and the optical phase modulator; D: an aperture diameter (diameter) of the aperture stop; w: a maximum angle of incidence of a principal light ray that enters the aperture stop; λ: a wavelength of light; and Re: phase retardation caused by birefringence of the optical phase modulator.

An example electronic device is provided, including a housing, a lens cover, and a lens assembly disposed in the housing. The lens assembly includes a plurality of lenses sequentially arranged from an object side to an image side along an optical axis. The lens assembly satisfies a conditional expression: 0.7<IH / (4*F #)<6, where IH is a total image height of the lens assembly, and F # is an F-number of the lens assembly. At least one lens that is in the lens assembly and that is close to the object side is configured to move along the optical axis. An equivalent focal length of the lens assembly is between 18 mm and 30 mm.

An optical imaging system includes a first lens group including a first lens, a second lens, and a third lens, and a second lens group including a fourth lens, a fifth lens, and a sixth lens and configured to be movable in an optical axis direction, wherein the first lens group and the second lens group are disposed in order from an object side toward an image plane side, and wherein conditional expression 1.50<(v1−v2) / (v3−v2)<2.50 is satisfied, where v1 is an Abbe number of the first lens, v2 is an Abbe number of the second lens, and v3 is an Abbe number of the third lens.

A display device includes a display configured to output a screen image along a first direction, and a lens assembly including at least three lenses arranged sequentially along an optical axis and configured to focus or guide the screen output from the display in a predetermined direction / predetermined position. The lens assembly may be configured to reflect the screen output from the display at least twice between a first lens disposed farthest from the display and an nth lens disposed closest to the display. The display may be disposed to be movable in a direction crossing the first direction or the optical axis. The display device satisfies [Conditional expression 1: 0.02<=MD / DSP<=0.2] regarding the diagonal length DSP of the display and the distance MD from the optical axis to the center of the display which is measured along a direction perpendicular to the optical axis.

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 lens system includes, sequentially from an object side: a first lens having positive power with an object-side surface whose convex surface faces the object side; a second lens having negative power with an object-side surface whose convex surface faces the object side; a third lens, the third lens being a meniscus lens having positive power with an image-side surface whose convex surface faces an image side; a fourth lens having negative power with an image-side surface whose concave surface faces the image side; a fifth lens which is a biconvex lens having positive power; and a sixth lens with an object-side surface whose convex surface faces the object side, in which the imaging lens system satisfies the following Conditional Expressions (1) to (3): nd1>1.77 . . . (1), nd2>1.77 . . . (2), and 0.8<f3 / f<12.0 . . . (3).

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.

The invention discloses an internal focusing type imaging lens and a camera 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 < = 2; -3 < = F3 / F < =-1; and the second lens group comprises a lens unit with negative focal power and an eighth lens with positive focal power which are sequentially arranged from the object side to the image side. According to the technical scheme, the focal power of the focusing group can be properly increased on the premise that good aberration correction is guaranteed, so that the focusing stroke is shortened, and miniaturization of an optical system is achieved.

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.

A zoom optical system that is suitable for moving image capturing, has a small size and a light weight, and can obtain favorable optical performance, an optical apparatus, and a method for manufacturing the zoom optical system are provided.A zoom optical system ZL included in an optical apparatus such as a camera1 includes, sequentially from an object side, a first lens group G1 having negative refractive power, a second lens group G2 having positive refractive power, a third lens group G3, and a fourth lens group G4 having positive refractive power, an space between adjacent lens groups changes at zooming, with the first lens group G1 fixed relative to an image plane and the fourth lens group G4 moving along an optical axis, at least the second lens group G2 moves along the optical axis at focusing, and the zoom optical system ZL satisfies a condition expressed by a predetermined conditional expression.

The objective lens for an endoscope consists of, from an object side to an image side, a first lens group having positive optical power and a second lens group having positive optical power. During focusing, only the second lens group moves. The first lens group includes a single lens that has negative optical power closest to the object side. The objective lens for an endoscope satisfies conditional expressions determined in advance related to a maximum image height, a focal length of a whole system, a maximum half angle of view, a focal length of the first lens group, a focal length of the second lens group, and a focal length of the single lens of the first lens group.

An interchangeable lens assembly includes a plurality of lens-side claw portions configured to be engaged with a plurality of camera-side claw portions, and a lock pin groove portion into which a lock pin is inserted, a lens barrel, and a lens mount fixing member. When θ1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of the lock pin groove portion and the optical axis, and θ2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin groove portion and the optical axis, θ1 and θ2 satisfy a predetermined conditional expression.

The invention discloses a long-focus optical lens and an optical lens module, and belongs to the technical field of optical imaging, and the long-focus optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis, the second lens has positive focal power; the third lens has negative focal power; the fourth lens has positive focal power; and a turning prism element; the optical lens satisfies the following conditional expressions:-8.000 < = (R11 + R12) / (DT11 + DT12) < =-3.934; tTL / T23 is greater than or equal to 19.999 and less than or equal to 52.100. The first lens, the second lens, the third lens and the fourth lens are combined and configured, so that the relative illumination of the optical lens is improved, the field curvature is corrected, the distortion is reduced, and the imaging quality of the long-focus optical lens is improved; meanwhile, after the light path is turned, the requirements of shortening the total length and reducing the size of the optical lens module are met.

The zoom lens consists of a first lens group, a front group, a middle group, and a rear group, in order from an object side. The first lens group has a positive refractive power and includes a negative lens and a positive lens, successively in order from a position closest to the object side to an image side. The front group consists of one or more lens groups that move during zooming and has a negative refractive power as a whole throughout an entire zoom range. The middle group includes only one lens group as a lens group. The rear group consists of a plurality of lens groups. An aperture stop is disposed between a lens surface closest to the image side in the front group and a lens surface closest to the object side in the rear group. The zoom lens satisfies predetermined conditional expressions.

To provide a microscope objective lens which is well corrected for aberrations, a microscope optical system, and a microscope device.SOLUTION: A microscope objective lens OL provided herein consists of a first lens group G1, a second lens group G2 having positive refractive power, a third lens group G3 having a concave surface on the image side, and a fourth lens group G4 having a concave surface on the object side, arranged in order from the object side along an optical axis, the first lens group G1 consisting of a positive plano-convex lens having a flat surface on the object side and a negative lens arranged in order from the object side along the optical axis. The microscope objective lens satisfies the following conditional expressions: 1.8<H1 / H2<3.5, 1.3<DLe / H2<3.5.SELECTED DRAWING: Figure 1