Abstract: The present disclosure discloses an optical imaging system. The optical imaging system comprises, sequentially along an optical axis from an object side to an image side, a stop; a first lens, having a positive refractive power; a second lens, having a refractive power; a third lens, having a refractive power; a fourth lens, having a negative refractive power, an object-side surface of the fourth lens is a convex surface; a fifth lens, having a negative refractive power; a sixth lens, having a refractive power; and a seventh lens, having a refractive power. Here, one of the first to seventh lenses is an aspheric lens made of glass, and a radius of curvature R2 of an image-side surface of the first lens and a radius of curvature R1 of an object-side surface of the first lens satisfy: 2.5?(R2+R1)/R2?R1)<3.0.

Abstract: A zoom lens includes in order from an object side, a negative first lens unit and a rear lens unit including one or more lens units, an interval between adjacent lens units being changed during zooming, in which the first lens unit and the one or more lens units can be set to first, second and third zoom states, in which angles of view at first and second image heights at the first zoom state are respectively 160° or larger, in which a distortion at the first image height at the third zoom state is ?30% or more, and the first image height, the second image height, a total length of the zoom lens at a wide angle end, and a focal length at the wide angle end are appropriately set.

Abstract: Embodiments of the disclosure relate to the field of unmanned aerial vehicle (UAV) technologies, and specifically disclose an autonomous orbiting method and device and a UAV. The UAV includes a binocular camera assembly. The method includes: obtaining, through the binocular camera assembly, a target footage and an orbited object selected by a user from the target footage; obtaining a flying height of the UAV when obtaining the target footage; determining a spatial distance between the binocular camera assembly and the orbited object based on the target footage; detecting an optical axis direction of the binocular camera assembly in real time; and performing autonomous orbiting according to the flying height, the spatial distance and the optical axis direction of the binocular camera assembly detected in real time.

Abstract: An image system lens assembly includes three lens groups including five lens elements. The three lens groups are, in order from an object side to an image side: first, second and third lens groups. The five lens elements are, in order from the object side to the image side: first, second, third, fourth and fifth lens elements. A zooming process is performed by changing axial distances between the three lens groups. The image system lens assembly has a long focal length end and a short focal length end. At least one surface of at least one lens element has an inflection point in an optically effective area thereof when the image system lens assembly is at the long focal length end and the short focal length end. The second lens group is moved relative to the first lens group along an optical axis in the zooming process.

Abstract: A zoom lens (10), a camera module (100) and an electronic device (1000). The zoom lens (10) comprises a first lens group (11) with negative focal power, a second lens group (12) with positive focal power, and a third lens group (13) with negative focal power, wherein both the second lens group (12) and the third lens group (13) can move relative to the first lens group (11); the following relations are met: ?2.5<FI/F2<?1.5, and ?2<F3/F2<?1.

Abstract: The present disclosure relates to an optical system, an image acquisition module and an electronic device. The optical system includes, successively in order from an object side to an image side: a first lens having a negative refractive power; a second lens having a refractive power, an object side surface thereof being convex; a third lens having a positive refractive power, an image side surface thereof being convex; a fourth lens having a negative refractive power; a fifth lens having a positive refractive power; a sixth lens having a positive refractive power, an image side surface thereof being convex; a seventh lens having negative refractive power, an object side surface thereof being concave. The optical system satisfies the following condition: 0<100/(f2*|f1|)?2.0 mm?2; where f2 is an effective focal length of the second lens, and f1 is an effective focal length of the first lens.

Abstract: An optical imaging system includes a first lens group including a first lens and a second lens, a second lens group including a third lens, a fourth lens, and a fifth lens, and a third lens group including a sixth lens and a seventh lens. The first to seventh lenses are arranged in order from an object side, at least one of the first lens group to the third lens group is moved on an optical axis to change a distance between the first lens group to the third lens group, and the following conditional expression is satisfied: 0.2<BFL/(2*IMG HT)<2.0 where BFL is a distance on the optical axis from an image-side surface of the seventh lens to an imaging surface of an image sensor, and IMG HT is half a diagonal length of the imaging surface of the image sensor.

Abstract: A zoom optical system includes, in order from an object, a first lens group, a second lens group, and a third lens group having positive, negative, and positive refractive powers, respectively. The first lens group moves toward the object and air distances between the first to third lens groups vary upon zooming from a wide-angle end state to a tele-photo end state. The first lens group comprises a cemented lens consisting of a negative lens and a positive lens in order from the object. The following conditional expressions are satisfied: 4.40<f1/(?f2)<8.00 0.60<f3/fw<3.50 0.60<(?f2)/f3<1.05 30.00°<?w<80.000 f1, f2, and f3 denoting focal lengths of the first to third lens groups, respectively, and fw and ow denoting a focal length of the zoom optical system and a half angle of view in the wide-angle end state, respectively.

Abstract: An optical imaging lens includes first to third lens element groups in sequence along an optical axis from an object side to an image side. The first lens element group includes at least two lens elements. The second lens element group includes at least two lens elements. The third lens element group includes at least two lens elements. When the optical imaging lens is zoomed, at least one lens element group is moved toward a direction of the object side or the image side along the optical axis.

Abstract: The present disclosure relates to an optical lens and discloses a camera optical lens. The camera optical lens includes nine lenses, and the nine lenses from an object side to an image side are: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and an ninth lens. The second lens has a positive refractive power, and the camera optical lens satisfies: ?1.80?f1/f??0.70; 2.00?d15/d16?12.00; wherein, f denotes a focal length of the camera optical lens, f1 denotes a focal length of the first lens, d15 denotes an on-axis thickness of the eighth lens, and d16 denotes an on-axis distance from an image-side surface of the eighth lens to an object-side surface of the ninth lens. The camera optical lens has good optical performance, and meets the design requirements of wide-angle and ultra-thin.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and three or more lens units. A distance between adjacent lens units varies during zooming. A predetermined condition is satisfied.

Abstract: A lens support mechanism (10) comprises a fourth lens group unit (24), a sixth lens group unit (26), a rectilinear cylinder 11, a cam cylinder (12), and a guide shaft (29a). The rectilinear cylinder 11 is provided on the outer peripheral side of the fourth lens group unit 24 and the sixth lens group unit 26, and has a rectilinear groove 11e into which a cam follower 24b and a main cam follower 26ba are inserted to restrict the rotation of the fourth lens group unit 24. A cam groove 12e and a cam groove 12h with which the cam follower 24b and the main cam follower 26ba are engaged are formed in the cam cylinder 12, and when the cam cylinder 12 rotates with respect to the rectilinear cylinder 11, this moves the fourth lens group unit 24 and the sixth lens group unit 26 in the optical axis OP direction. The guide shaft 29a is fixed at a first end to the fourth lens group unit 24 and inserted into the insertion opening 26c to guide the sixth lens group unit 26 in the optical axis OP direction.

Abstract: An optical imaging system includes a first lens group, a second lens group, and a third lens group, sequentially arranged from an object side, wherein the first lens group includes two lenses having negative and positive refractive power, the second lens group includes a plurality of lenses, and the third lens group includes two lenses having negative and positive refractive power.

Abstract: A wide-angle optical system includes in order from an object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third unit having a positive refractive power. At the time of carrying out a focal-position adjustment from a far point to a near point, the second lens unit is moved from a first position toward a second position. The third lens unit includes not less than three lens components, and not less than three lens components include a first lens component and a second lens component. The first lens component is a single lens and the second lens component is a cemented lens. Following conditional expression (1) is satisfied: ?0.60<(n2C??n2C)/r2C<?0.05??(1).

Abstract: A camera optical lens includes, from an object side to an image side, 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. At least one of the first lens to the eighth lens has a free-form surface, and the camera optical lens satisfies: ?7.50?f2/f6??1.50; and ?6.00?R1/R2??0.18, where f2 denotes a focal length of the second lens, f6 denotes a focal length of the sixth lens, R1 denotes a curvature radius of an object-side surface of the first lens, and R2 denotes a curvature radius of an image-side surface of the first lens. The camera optical lens has good optical performance, as well as a large aperture, ultra-thinness and a wide angle.

Abstract: Provided are a wide-angle lens, a camera module having a wide-angle lens, and a camera having a camera module having a wide-angle lens. A first group includes a first lens and a second lens each having a negative refractive power. A second group includes a third lens and a fourth lens each having a positive refractive power. The third group includes a fifth lens and a sixth lens each having a positive refractive, a seventh lens having a negative refractive power, and an eighth lens having a positive refractive power, the sixth lens and the seventh lens form a cemented body. The wide-angle lens, the camera module and the camera adopt eight glass lenses.

Abstract: An optical imaging lens assembly having a zooming function includes, in order from an object side to an image side along an optical path: a reflection group and a lens group. The reflection group includes a prism having an object-side surface being convex. The prism includes a reflection surface configured to reflect an imaging light passing through the object-side surface of the prism and send the imaging light to an image-side surface of the prism. The lens group includes at least three lens elements arranged along the optical path, and each of the at least three lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The lens group includes a movable group, and the movable group moves along a direction parallel to an optical axis in a zooming process.

Abstract: A variable magnification optical system comprises, in order from an object side, a negative first lens group, a positive second lens group, a negative third lens group and a positive fourth lens group. Upon varying a magnification, a distance between the first lens group and the second lens group, a distance between the second lens group and the third lens group, and a distance between the third lens group and the fourth lens group are varied. The first lens group consists of, in order from the object side, a negative lens and a positive lens. The second lens group consists of, in order from the object side, a positive 2a lens group, a positive 2b lens group, and a negative 2c lens group. A downsized system having high optical performance is provided.

Abstract: The disclosure discloses a zoom lens group. The zoom lens group sequentially includes from an object side to an image side along an optical axis: a first lens group having a negative refractive power, the first lens group including a first lens and a second lens which are sequentially arranged along the optical axis; a second lens group having a positive refractive power, the second lens group including a third lens, a fourth lens and a fifth lens which are sequentially arranged along the optical axis; and a third lens group having a positive refractive power, a separation distance between the first lens group and the second lens group on the optical axis and a separation distance between the second lens group and the third lens group on the optical axis are adjusted, so as to switch the zoom lens group from a wide-angle state to a long-focus state.

Abstract: Discloses is a camera optical lens including nine lenses, and the nine lenses from an object side to an image side are: a first lens with a negative refractive power, a second lens with a positive refractive power, a third lens with a negative refractive power, a fourth lens with a positive refractive power, a fifth lens with a positive refractive power, a sixth lens with a positive refractive power, a seventh lens with a negative refractive power, an eighth lens with a positive refractive power and an ninth lens with a negative refractive power. The camera optical lens satisfies: ?1.80?f1/f??0.50; 3.00?d9/d10?15.00. The camera optical lens has good optical performance, and meets the design requirements of a large aperture, wide-angle and ultra-thin.

Abstract: A lens assembly includes a first lens group, a second lens group, a third lens group, a fourth lens group, a fifth lens group, a sixth lens group, and a first reflective element. The first and third lens groups are with negative refractive power. The second and fourth lens groups are with positive refractive power. The fifth and sixth lens groups are with refractive power. The first, second, third, fourth, fifth, and sixth lens groups are arranged in order from a first side to a second side along an axis. The first reflective element includes a first reflective surface. A light from the first side sequentially passes through the first, second, third, fourth, fifth, and sixth lens groups to the second side. The first reflective element is disposed between the first lens group and the sixth lens group.

Abstract: An image capturing optical lens system includes four lens elements, which are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element and a fourth lens element. The first lens element has an object-side surface being convex in a paraxial region thereof. The third lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof. The fourth lens element has negative refractive power.

Abstract: A camera device includes a plurality of lenses and an annular body. The annular body is disposed between the object side and the plurality of lenses, between the plurality of lenses, or between the plurality of lenses and the image side. The annular body includes an annular main body, an outer circumferential portion, and an inner circumferential portion, wherein the annular main body connects to the outer circumferential portion and the inner circumferential portion, the annular main body is disposed between the outer circumferential portion and the inner circumferential portion, and the inner circumferential portion is non-circular and surrounds the optical axis to form a hole. The camera device satisfies: Dx>Dy; where Dx is a maximum dimension of the hole through which the optical axis passes, and Dy is a minimum dimension of the hole through which the optical axis passes.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and three or more lens units. A distance between adjacent lens units varies during zooming. A predetermined condition is satisfied.

Abstract: Systems and methods are described for reporting capacitance of a capacitor of a power backup circuit comprising a plurality of metal-oxide-semiconductor field-effect transistors (MOSFETs). The system may also include a bleeder resistor and a voltage detection circuit. When capacitance monitoring is active, a first MOSFET may be turned off, causing the capacitor to be discharged via the bleeder resistor. After predetermined time intervals, a first drain voltage and a second drain voltage of the first MOSFET may be determined using the voltage detection circuit. The drain voltage readings at the different times may be used to determine the capacitance of the capacitor, which may be used to generate and transmit a report on capacitor performance and status.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens disposed sequentially from an object side. The optical imaging system satisfies ?2.0<L3R2/f<?0.5 and 3.0<f/IMG_HT<4.0, where L3R2 is a radius of curvature of an image-side surface of the third lens, f is a focal length of the optical imaging system, and IMG_HT is half a diagonal length of an imaging plane.

Abstract: An endoscope optical system includes, in order from an object side: a fixed negative first lens group; a movable positive second lens group; a fixed aperture stop; and a fixed positive third lens group, the endoscope optical system being capable of switching between a normal observation state and a magnified observation state by moving the second lens group along an optical axis, in which the third lens group includes, in order from the object side: a cemented lens consisted of three lenses; and a cemented lens consisted of two lenses. In the cemented lens consisted of three lenses, three lenses of a positive lens, a negative lens, and a positive lens are cemented. In the cemented lens consisted of two lenses, two lenses of a positive lens and a negative lens are cemented. The following conditional expressions (1) and (2) are satisfied: 1.70<(nd3G1+nd3G2+nd3G3)/3<2.0 (1); and 1.72<(nd3G4+nd3G5)/2<2.0 (2).

Abstract: Embodiments of the disclosure relate to the field of unmanned aerial vehicle (UAV) technologies, and specifically disclose an autonomous orbiting method and device and a UAV. The UAV includes a binocular camera assembly. The method includes: obtaining, through the binocular camera assembly, a target footage and an orbited object selected by a user from the target footage; obtaining a flying height of the UAV when obtaining the target footage; determining a spatial distance between the binocular camera assembly and the orbited object based on the target footage; detecting an optical axis direction of the binocular camera assembly in real time; and performing autonomous orbiting according to the flying height, the spatial distance and the optical axis direction of the binocular camera assembly detected in real time.

Abstract: The present disclosure relates to a retina imaging method in which a light from a light source into two lights is dispersed, at least one eyeground image of the eyeball at a first magnification is obtained by adjusting the paths of the two lights incident on the eyeball, and a plurality of DIC images are obtained at a second magnification higher than the first magnification with respect to the retina of the entirety of the obtained at least one eyeground image by adjusting the paths of the two lights incident on the eyeball.

Abstract: A lens device for inspecting an object having at least one end surface and at least one lateral surface, substantially orthogonal to the end surface, is provided. The lens device includes a front optical group, a rear optical group acting as prime lens for collecting beams originating from the front optical group, a stop inserted in the rear optical group, and a sensor plane collecting beams projected by the rear optical group. The front optical group includes only refractive lenses and is formed by at least one front lens configured to receive beams both from the at least one end surface of the object, perpendicular to the optical axis, and from the at least one lateral surface of the object, substantially parallel to the optical axis, and by one or more converging lenses arranged behind the front lens and suitable to focus the beams received towards the rear optical group.

Abstract: An image capturing lens system includes three lens groups including five lens elements. The three lens groups are, in order from an object side to an image side: first, second and third lens groups. The five lens elements are, in order from the object side to the image side: first, second, third, fourth and fifth lens elements. The first lens element has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. At least one lens element has an inflection point. A focal length of the image capturing lens system is varied by changing axial distances between the three lens groups in a zooming process. The image capturing lens system has a long-focal-length end and a short-focal-length end. The second lens group is moved relative to the first lens group along an optical axis in the zooming process.

Abstract: An imaging lens and an imaging apparatus capable of acquiring a long-distance object image at high resolution and capable of acquiring a short-distance object image in a wide range while, as a whole, being configured small. In order to achieve the object, an imaging lens according to the present invention is an imaging lens consisting of n (n is a natural number equal to or larger than six) lenses including a first lens having negative refractive power and a second lens having positive refractive power in order from an object side and including an n-th lens having negative refractive power and an n?1-th lens having positive refractive power in order from an image side, the imaging lens satisfying a predetermined conditional expression.

Abstract: The present disclosure discloses an optical imaging lens assembly including 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, each of which has refractive power. The first lens has a negative refractive power; the the third lens and the sixth lens each has a positive refractive power; an object-side surface of the fourth lens is convex, and an image-side surface thereof is concave; an object-side surface of the fifth lens is convex,and an image-side surface thereof is concave. A distance TTL along the optical axis from an object-side surface of the first lens to an imaging plane of the optical imaging lens assembly and half of a diagonal length ImgH of an effective pixel area on the imaging plane of the optical imaging lens assembly satisfy TTL/ImgH?1.25.

Abstract: Embodiments of the present disclosure relate to a method and an apparatus for monitoring plasma behavior inside a plasma processing chamber. In one example, a method for monitoring plasma behavior includes acquiring at least one image of a plasma, and determining a plasma parameter based on the at least one image.

Abstract: A power generation system for a mobile device. The power generation system includes a combustion engine. The combustion engine serves as a power generator for the mobile device, with the combustion engine being located on a trailer. The power generation system also includes a power module. The power module comprises both an ultra-capacitor and a lithium-based battery; Preferably, the ultra-capacitor comprises a series, or bank, of super capacitors. Likewise, the battery comprises a series of lithium batteries. Preferably, the super capacitors are in electrical communication with an alternator of a truck. The power module provides power to start the combustion engine used to drive the mobile device. The mobile device may be a refrigeration system, or may be heaters, blowers, lights or other electrical items that may be carried on the trailer.

Abstract: A projection system has a zooming function and is configured that light rays from a telecentric system enter. The projection system is formed of seven lens groups. The first and seventh lens groups are fixed when the projection magnification is changed, and the second, third, fourth, fifth, and the sixth lens groups move along the optical axis when the projection magnification is changed. The second lens group is formed of one positive lens. The third lens group is formed of one positive lens. The fourth lens group is formed of one or two positive lenses and one negative lens having the center of curvature located at the magnifying side. The fifth lens group is formed of one negative lens having a magnifying-side aspheric surface and a demagnifying-side aspheric surface with each of the surfaces having the center of curvature located at the demagnifying side.

Abstract: A zoom lens system (10) for imaging, includes, in order from an object side (11); a first lens group (G1) with negative refractive power that moves at the time of zooming; a second lens group (G2) with a positive refractive power that moves at the time of zooming, the second lens group including an aperture stop (St); a third lens group (G3) with a positive refractive power, the position of which is fixed relative to the image plane. The second lens group includes: a first sub-lens group (S1) with a positive refractive power arranged on the object side and having the aperture stop; and a second sub-lens group (S2) with a negative refractive power arranged on the image plane side and configured to move independently of the first sub-lens group at the time of focusing.

Abstract: The present invention relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, and a fourth lens having a negative refractive power. The camera optical lens satisfies following conditions: ?3.50?f2/f??1.50; 3.00?(R3+R4)/(R3?R4)?8.00; 8.00?d1/d2?15.00; 0.50?f3/f?0.75; ?5.00?R2/R1??2.50; ?0.70?f4/f??0.40. The camera optical lens can achieve excellent optical characteristics with a large aperture, wide-angle, and being ultra-thin.

Abstract: This invention provides a single-camera vision system, typically for use in logistics applications, that allows for adjustment of the camera viewing angle to accommodate a wide range of object heights and associated widths moving relative to an imaged scene with constant magnification. The camera assembly employs an image sensor that is more particularly suited to such applications, with an aspect (height-to-width) ratio of approximately 1:4 to 1:8. The camera assembly includes a distance sensor to determine the distance to the top of each object. The camera assembly employs a zoom lens that can change at relatively high speed (e.g. <10 ms) to allow adjustment of the viewing angle from object to object as each one passes under the camera's field of view (FOV). Optics that allow the image to be resolved on the image sensor within the desired range of viewing angles are provided in the camera lens assembly.

Abstract: The imaging lens consists of, in order from the object side, a first positive lens group, a stop, a second positive lens group, and a third negative lens group. During focusing, the first lens group and the second lens group move integrally. The first lens group consists of three or less lenses. The first lens group includes a cemented lens in which a negative lens and a positive lens are cemented in order from the object side. The third lens group consists of, in order from the object side, a negative aspheric lens, a negative lens, and a positive lens. The lens closest to the image side in the second lens group is a biconvex lens, and the imaging lens satisfies a predetermined conditional expression regarding the radius of curvature of the surface of the biconvex lens.

Abstract: The invention relates to personal display devices and in particular an eyepiece therefor. The eyepiece is adapted for projecting an image from an image plane on one side of the eyepiece through an exit pupil on the opposite side of the eyepiece and comprises at least one stationary lens group and at least two movable lens groups being movable with respect to the stationary lens group along an optical axis between the image plane and the exit pupil. According to the invention, the lens groups are arranged in positive-negative-positive configuration and the movable lens groups are arranged to move along the optical axis between a first state providing a first field-of-view and a second state providing a second field-of-view smaller than the first field-of-view to the image plane. The invention allows for improving optical performance and user experience of personal display devices.

Abstract: A vehicle-mounted wide-angle lens that simultaneously achieves a high resolution necessary for sensing, a size small enough to be mounted on a vehicle, and a low price. An imaging lens includes, sequentially from the object side, a first lens having a negative power and being concave on the image side, a second lens having a negative power and being concave on the image side, a third lens having a positive power and being convex on the object side, an aperture stop, a fourth lens having a positive power and being convex on the image side, a fifth lens, a sixth lens whose object side is bonded to the image side of the fifth lens and a seventh lens having a negative power and being convex on the image side, and the fourth lens is an aspheric glass lens.

Abstract: An optical system includes: a first lens group with negative refractive power at an object side of an aperture stop; a second lens group with positive refractive power at an image plane side of the aperture stop; and a third lens group with positive refractive power at the image plane side of the second lens group. The first lens group includes a first lens with negative refractive power and concave image plane side, a second lens of meniscus type, with negative refractive power, and convex image plane side, and a third lens with positive refractive power and convex object side. The second lens group includes a fourth lens with positive refractive power and convex image plane side; a fifth lens of meniscus type, with negative refractive power, and convex object side; and a sixth lens with negative refractive power and concave object side.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens sequentially disposed in numerical order along an optical axis of the optical imaging system from an object side of the optical imaging system toward an imaging plane of the optical imaging system, wherein the first to seventh lenses are spaced apart from each other along the optical axis, and the optical imaging system satisfies 0.4<L1TR/L7TR<1.9, where L1TR is an overall outer diameter of the first lens, L7TR is an overall outer diameter of the seventh lens, and L1TR and L7TR are expressed in a same unit of measurement.

Abstract: The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of glass material, the fourth lens is made of plastic material, the fifth lens is made of plastic material and the sixth lens is made of glass material. The camera optical lens further satisfies specific conditions.

Abstract: A zoom lens includes a first lens group with a negative refractive power, a second lens group with a positive refractive power, and a third lens group with a positive refractive power. When the zoom lens changes from a wide angle end to a telephoto end, a spacing between the first lens group and the second lens group is reduced, and a spacing between the second lens group and the third lens group changes. The first lens group includes a first lens, a second lens, a third lens, and a fourth lens. Refractive powers of the first lens, the second lens, and the third lens are negative, and a refractive power of the fourth lens is positive. Abbe numbers of the first lens, the second lens, and the third lens are larger than 60. A ratio of a focal length of the first lens group over a focal length of the zoom lens at a wide angle end is larger than ?2.5 and smaller than ?1.2.

Abstract: A plurality of lens units of a zoom lens according to an aspect of the embodiments includes a first lens unit having a negative refractive power, and a rear lens group which includes one or more lens units and has a positive refractive power as a whole. The first lens unit consists of a first negative lens, a second negative lens, and a positive lens which are disposed in order from an object side to an image side. A specific gravity of the first negative lens, a focal length of the second negative lens, and a focal length of the first lens unit are appropriately determined.

Abstract: The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of plastic material, the second lens is made of plastic material, the third lens is made of plastic material, the fourth lens is made of glass material, the fifth lens is made of plastic material, and the sixth lens is made of glass material. The camera optical lens further satisfies specific conditions.

Abstract: Systems and methods described herein are directed towards controlling a level of detail for geostreaming data. In some examples, an identifying event data that includes location information. A polygon may be defined that comprises points on a map corresponding to the event data. A first level of detail may be determined and a fidelity of the polygon may be changed based at least in part on the first level of detail. Second event data may be received that identifies a location of an object. It may be identified whether the object is within the location information and a user interface may be prepared that presents whether the object is in an affected area.

Abstract: The present invention relates to an inspection system and more particularly to a system and method for inspection of wet ophthalmic lens, preferably in an automated lens manufacturing line. The inspection system provides for capturing multiple images of an ophthalmic lens using multiple cameras, each with a customized optical unit which may use wavelength filters, and the ophthalmic lens illuminated by multiple lighting modules each configured for a different wavelength, or a different polarization and triggered to strobe the illumination at the same instance or at different instances in the time domain. Suitable filters used in the optical module for each camera ensures appropriate images at different illuminating wavelength, especially when all the illuminations are strobed at the same time. Images captured and inspected by this configuration aids in improvement in method of inspection with enhanced degree of reliability and quality.