146results about How to "Change focal length" patented technology

A multifocal lens system to be used for digital cameras for setting any one of a plurality of lenses in a picture taking (image capturing) position comprising a wide-angle lens (shorter focal length lens) mounted in front of an image sensor in a picture taking (image capturing) position, a telephoto lens (longer focal length lens) mounted alongside the wide-angle lens, a parallelogram prism (rhombic prism) or a pair of triangular prisms removably arranged between the two lenses at the rear of them. When the wide-angle lens is to be used, the parallelogram prism or one of the two triangular prisms is to be removed from the rear of wide-angle lens so that the wide-angle lens can be focused on the sensor enabling light to pass therethrough. The telephoto lens is so positioned that it may be focused on the image sensor through the parallelogram prism or being reflected by the triangular prisms enabling light to pass therethrough when a part of the parallelogram prism or one of the two triangular prisms is placed in front of the image sensor to cover the imaging area of the sensor and to shut the light through the wide-angle lens to the sensor. By moving the prism from the rear of each lens, one of the two lenses can be positioned for picture taking (image capturing).

An information processing device includes a shooting lens assembly, a photoelectric conversion element, a memory, a display screen, a zoom designation device and an image size changing device (e.g., a controller). The photoelectric conversion element receives light from an object that is collected by the shooting lens assembly and converts the collected light into electrical signals representative of the object. The memory stores image data that is representative of objects. The display screen displays images of the object corresponding to the electrical signal converted by the photoelectric conversion element or images corresponding to the image data stored in the memory. The image size changing device magnifies or reduces an image size of the image displayed on the display screen regardless of whether the image is being supplied from the photoelectric conversion element or the memory.

The present invention is directed to the provision of a liquid crystal Fresnel lens that achieves high focusing performance. The liquid crystal Fresnel lens according to the present invention includes a concentrically segmented ring-shaped electrode group, a common electrode disposed opposite the ring-shaped electrode group, a liquid crystal layer provided between the ring-shaped electrode group and the common electrode, a first lens segment region which includes a first plurality of ring-shaped electrodes from the ring-shaped electrode group, and which forms a first retardation distribution by utilizing the first plurality of ring-shaped electrodes, and a second lens segment region which includes a second plurality of ring-shaped electrodes from the ring-shaped electrode group, the second plurality of ring-shaped electrodes being located outwardly of the first plurality of ring-shaped electrodes, and which forms a second retardation distribution by utilizing the second plurality of ring-shaped electrodes, wherein a Fresnel lens-like retardation distribution is formed across the first and second lens segment regions, and the number of the second plurality of ring-shaped electrodes is made smaller than the number of the first plurality of ring-shaped electrodes.

A lighting system includes a bright bulb installed in front of a variable reflector assembly comprising a plurality of leaves. The leaves have some overlap and are pivotally attached near the base of the bulb, so that they can be collapsed inward or expanded outward in tandem by a mechanism. A baffle and light shield enclose and protect the bulb, and result in controllable and variable indirect lighting from the bulb.

The invention relates to the technical field of solar application products, in particular to a solar dish-shaped condensing mirror with adjustable focus and an application thereof. The condensing mirror is a high-reflection laminated silver-coated glass mirror, the glass mirror is mounted on a dish-shaped glass support, the support is used for carrying the glass mirror, the carrying surface is in the shape of an arc, the glass mirror and the support are connected through a focus regulating mechanism, and the glass mirror can produce elastic deformation through the regulating mechanism, thereby realizing the focus regulation of the glass mirror. The flat plate tempered glass silver mirror can be concave and deformed by tensioning the flat plate tempered glass reflecting mirror through a focus regulating support and a regulating screw rod, thereby forming the dish-shaped condensing structure; and different condensing focuses can be achieved by appropriately regulating the tensioning degree of the screw rod (the tempered glass can bear a certain elastic deformation and not be broken). A plurality of dish-shaped condensing mirror modules are mounted on a solar tracking support, respective condensing focuses of the dish-shaped condensing mirror modules are irradiated to the same position, the processing process and the mounting method of the dish-shaped condensing mirror group with the adjustable focus are very simple, the cost is low, the large-scale popularization can be realized, and the high-efficient high-power condensation can be further achieved. The high-power condensation can be applied in high-efficient gallium arsenide solar power generation, heat collection power generation, high temperature and strong light utilization and the like.

The invention provides an anti-vibration structure, an anti-vibration system and a camera device with the anti-vibration system. The anti-vibration structure comprises SMA silk-covered wires; an OIS reed fixedly connected with the SMA silk-covered wires; an OIS substrate; a tablet assembly partially arranged on the OIS substrate, wherein the tablet assembly is electrically connected with the SMA silk-covered wires, thereby enabling the SMA silk-covered wire to shrink or expand under the current effect and drive at least partial OIS reed to move along a predetermined direction; an OIS arrangedon the OIS substrate and used for supporting the OIS reed; and an OIS base arranged at one side, far away from the OIS support, of the OIS substrate, and connected with the OIS substrate. Through thetechnical scheme provided by the application, the problem that the blurred image is photographed due to hand shaking in the shooting process can be solved.

The invention relates to an intelligent unmanned aerial vehicle for wild animal research. The intelligent unmanned aerial vehicle comprises a body and a photographing mechanism. The photographing mechanism is arranged under the body and comprises a second driving motor, a second driving shaft, a turntable, a stretching unit and a photographing unit, the photographing unit comprises a fixing plate, a camera body, a lens and a focusing mechanism, the camera body is arranged on one side of the fixing plate, the lens and the focusing mechanism are arranged on the other side of the fixing plate, and the focusing mechanism comprises a third driving motor, a second connecting rod, a third connecting rod, a hinge block, a slide bar and a rotary ring. The intelligent unmanned aerial vehicle for wild animal research has the advantages that the second driving motor and the stretching unit can run, accordingly, angles of the lens can be adjusted, the intelligent unmanned aerial vehicle can bring convenience for adjusting photographing angles according to research requirements, and wild animals in different ranges can be photographed; the focal length of the lens can be changed by the aid of the focusing mechanism on the fixing plate, accordingly, moving objects at different distances can be clearly photographed, the intelligent unmanned aerial vehicle can bring convenience for acquiring images of the animals which move at high speeds for research, and the practicality of equipment can be improved.

The invention discloses a remote-controlled continuous zoom lens with liquid, comprising a zoom component, a hollow rubber tube and a control component, wherein the zoom component comprises a main body, an upper cover plate arranged on the main body, and a lower cover plate arranged below the main body; the main body is formed by connecting an upper inner sleeve with a lower outer sleeve; the exterior of the inner sleeve is step-shaped, and a sealing ring is arranged between the step part at the lower part of the inner sleeve and the outer sleeve; a transparent elastic membrane is sheathed at the lower end surface of the inner sleeve and is pressed by the sealing ring; a chamber is formed among the transparent elastic membrane, the outer sleeve and the lower cover plate and is filled with the liquid; a vent and a liquid inlet mouth are respectively arranged at two sides of the lower part of the outer sleeve and are communicated with the chamber in the outer sleeve; the liquid inlet mouth is sealed by a sealing screw; and the external end part of the liquid inlet mouth is connected with one end of the hollow rubber tube, and the other end of the hollow rubber tube is connected with the control component. The remote-controlled continuous zoom lens can realize remote control and continuous zooming, and has the advantages of small volume, light weight, high response speed, and excellent imaging quality.

The invention provides an anti-shake structure, an anti-shake system and a camera device with the anti-shake system. The anti-shake structure comprises a SMA thread, an OIS reed fixedly connected withthe SMA thread; an OIS substrate; a sheeting module partially arranged on the OIS substrate and electrically connected with the SMA thread, thereby enabling the SMA thread to shrink or expand under the current effect and drive at least a part of the OIS reed to move along a predetermined direction, wherein the sheeting module is provided with an input terminal and an output terminal which are located at one side of the sheeting module; an OIS support arranged on the OIS substrate and used for supporting the OIS reed; and an OIS base arranged at one side, far away from the OIS support, of theOIS substrate and connected with the OIS substrate. Through the technical scheme provided by the application, the problem that the blurred photo is photographed due to hand shaking in the photographing process can be solved.

The invention relates to video devices, monitoring devices and pick-up lens devices, in particular to a four-element high-resolution day-and-night dual-purpose multipoint varifocal lens. The multipoint varifocal lens in a novel four-element structural style has the advantages of high optical zoom ratio, large focal length, large aperture, high resolution, wide light spectrum, confocal property and the like; and the multipoint varifocal lens also has the characteristic of small structural length. The light path is composed of a front fixing element (A), an optical zooming element (B), a back fixing element (D) and a compensation element (E). Since the optical zooming element (B) and the compensation element (E) correspondingly move back and forth along the optical axis, the focal length of the optical system can be conveniently changed. In the light path design process, the focal power of the four elements are reasonably distributed, so that the optical lens has the performance indexes of high optical zoom ratio, large focal length and large relative aperture.

The invention provides a wearable head up optical system which comprises an imaging system, output imaging light rays and a light guide system which guides the imaging light rays into human eyes. The imaging system is provided with a light source interface, the imaging system receives light source rays emitted by an outside light source through the light source interface and light ray transmission media, and the light source rays are used for generating imaging light rays. The wearable head up optical system is beneficial to decreasing the size and lowering the weight of the system and capable of improving the comfort degree in the wearing process.

A liquid-crystal varifocal lens includes a liquid crystal lens, and an ultrasonic transducer for generating an ultrasonic wave with a frequency that matches a resonant frequency of the liquid crystal lens. The ultrasonic transducer generates flexural oscillation in the liquid crystal lens such that the flexural oscillation has a vibration intensity decreasing continuously from the center to the circumference of a liquid crystal layer, whereby the thickness of the liquid crystal layer is changed, with the result that the orientation of the liquid crystal molecules is changed.

A lighting system includes a bright bulb installed in front of a variable reflector assembly comprising a plurality of leaves. The leaves have some overlap and are pivotally attached near the base of the bulb, so that they can be collapsed inward or expanded outward in tandem by a mechanism. A baffle and light shield enclose and protect the bulb, and result in controllable and variable indirect lighting from the bulb.

The invention relates to a zooming lens module, which comprises a lens barrel as well as a piezoelectric actuating device, a first lens module and a second lens module contained inside the lens barrel, wherein, the piezoelectric actuating device and the second lens module are fixed on the lens barren in turn; the piezoelectric actuating device comprises a piezoelectric ceramic piece and a slide piece matched with the piezoelectric ceramic piece; the first lens module is fixed on the slide piece; the piezoelectric ceramic piece is used to drive the slide piece to move along an optical axis under the action of voltage, thereby driving the first lens module to move along the optical axis relative to the second lens module. With a simple structure, the invention can effectively reduce the volume of the zooming lens module and lowers manufacturing cost.

The invention discloses a multi-functional aerial photography aircraft. The multi-functional aerial photography aircraft comprises a support (12), rotor wings, a base plate (9), a holder (13), supporting legs (8) and a camera (7); the rotor wings and the holder are arranged on the support; the base plate is fixed to the bottom of the support; the camera is installed on the holder; the supporting legs are fixed to the bottom of the base plate; the camera comprises a camera body (77) and a combined type lens (72); a CCD sensor (76) is arranged in the camera body, and a photoelectric transmitting and receiving device (75) used for aligning the lens is arranged on the camera body. The multi-functional aerial photography aircraft is high in integration degree and compact in structure, has the flight structure excellent in performance and is further provided with the supporting legs having the unique buffering function, furthermore, the aircraft is provided with the camera of original creation, and therefore the multi-functional aerial photography aircraft is abundant in function, high in safety, ingenious in structure, large in lift force, stable in flight and easy to implement.

The invention discloses an intelligent building security monitoring device based on a wireless network. The device comprises a mounting base and a management cabinet, the bottom of the management cabinet is integrally connected with a power distribution box; the power distribution box is clamped and fixed at the top of the mounting base; four sets of spring shock absorbers are symmetrically installed at the bottom end of the interior of the management cabinet. The top ends of the spring shock absorbers are fixedly connected with a tray; a first forward and reverse rotation motor is fixedly mounted at the top of the tray; and a top rotating disc of the management cabinet is arranged, stand columns are symmetrically welded to the two sides of the top of the rotating disc, a shooting device is rotationally connected between the two stand columns through a pin shaft, an acousto-optic buzzer is installed at the top of the shooting device, and a signal collection box and a wireless communicator are embedded into the two sides of the management cabinet correspondingly. The system is simple and reasonable in structural design, convenient to operate, disassemble, assemble and replace, capable of effectively achieving tracking shooting and conveniently summarizing and uniformly managing data, capable of supporting remote control, safe, stable, wide in application range and beneficial topopularization and popularization.

The invention relates to a high-resolution zoom lens for an intelligent transportation system. The high-resolution zoom lens provided by the invention comprises a front main lens cone, a middle main lens cone and a rear main lens cone and is characterized in that a front fixing group A arranged in the front main lens cone, a zooming group B arranged in the middle main lens cone, a rear fixing group D arranged in the rear main lens cone and a compensating group E are respectively arranged along the incidence direction of light rays from left to right; and a variable diaphragm C is arranged between the zooming group B and the rear fixing group D. The lens provided by the invention has the advantages of large zooming ratio, large relative aperture, high resolution, wide spectrum confocal performance and the like, is adaptive to a 1 / 1.8'' CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) photoelectric sensor, is mainly used for shooting and monitoring the busy traffic stream motion conditions, license plate numbers and jam occasions on roads in real time and is a mainstream product in the intelligent transportation system.

The invention discloses a liquid continuous zooming lens which comprises a precession device, an upper cover plate and a lower cover plate, wherein the upper cover plate is positioned on the upper surface of the precession device, the lower cover plate is positioned on the lower surface of the precession device, and both the upper cover plate and the lower cover plate are made of transparent materials; and the precession device is formed by connecting an upper inner sleeve with a lower outer sleeve, an inner hole of the outer sleeve is a stepped hole with a large upper part and a small lower part, a transparent elastic film is arranged on the step of the stepped hole, a seal pressing ring is installed on the inner side of the lower part of the outer sleeve, the transparent elastic film is tightly pressed on the outer sleeve by the seal pressing ring, a cavity is formed by the transparent elastic film, the outer sleeve and the lower cover plate, and liquid is filled in the cavity. The liquid continuous zooming lens has the advantages of simple structure, small size, light weight, stabilization of an optical axis, continuity in zooming, high response speed, high precision, convenience in operation and easiness in processing.

The invention relates to a zoom lens made of super materials. The zoom lens made of super materials comprises a substrate and a plurality of metal micro structures adhered onto the substrate, wherein semiconductor elements are arranged on the metal micro structures, an external interface is reserved on each metal micro structure, and external voltage signals can be loaded on each semiconductor element through the external interfaces. By means of the zoom lens made of super materials, after the external voltage signals can be loaded on the semiconductor elements of the metal micro structures through the external interfaces, electromagnetic parameter distribution (namely refractive index distribution) of the whole super materials is changed, accordingly focal length of the zoom lens made of super materials is changed, and the focal length is accordingly adjusted.

Provided herein is a reflective varifocal lens configured to change a focal length using an electric signal, the lens including a first electrode layer having conductivity; an electric active polymer layer formed on the first electrode layer; a second electrode layer having conductivity formed on the electric active polymer layer; and a reflective layer configured to reflect a light entering towards the first electrode layer or second electrode layer, wherein a shape of the electric active polymer layer is changed by the electric signal being applied to the first electrode layer and second electrode layer, and as the shape of the electric active polymer layer changes, a shape of the reflective layer changes, thereby changing a focal length of a reflective light.

The embodiments of the invention provide a zoom lens, a zoom method, a terminal and a computer readable storage medium. The zoom lens includes n lenses; the n lenses are successively arranged in an optical axis direction; n is a positive integer greater than or equal to 2; an aperture is arranged parallel to the n lenses in an optical axis direction; the aperture is arranged at the tail end of theoptical axis and parallel to the n lenses to form an image plane; the n lenses include m variable curvature lenses and n-m aspherical lenses; the top end and bottom end of each variable curvature lens of the m variable curvature lenses are provided with driving parts; m is a positive integer greater than 1 and less than n; by changing the power of the driving parts corresponding to the m variablecurvature lenses, the radiuses of curvature of the m variable curvature lenses are changed, and an incident angle is obtained; and after receiving incident light corresponding to an object space, under the action of a beam of light of the aperture, and through the n lenses, the incident light is reflected to the image plane to be an image at an incident angle.

The invention provides a zooming method of portable projection system and zooming device. The zooming device comprises: object lens behind the DMD of projection system, torquer with bearing object lens and zooming control system for controlling the movement of the torquer, wherein the zooming control system comprises a displacement detecting module, error servo algorithm module and error compensation instruction module. The zooming method comprises: (1) measuring the distance between the object lens and projection screen by displacement detecting module; (2) calculating the corresponding deviation compensation driving voltage required by the position error using error servo algorithm module; (3) the error compensation instruction module sending command to control the movement of torquer at optimal space position, to implement the automatically zooming. The focus can be changed at real time and the displacement accuracy of object lens can be 0.23-0.40um. The invention can quickly and effectively perform automatic zooming in portable projection system and satisfy the requirement of automatic zooming of portable projection system using device such as cellphone, pocket PC.

The invention relates to the technical field of optics and the field of MEMS, in particular to an all-solid-state variable-focus piezoelectric driving type micro lens based on an SEBS film, which is structurally characterized in that the SEBS film is placed between two glass layers with different thicknesses; and the two annular piezoelectric actuators are respectively bonded on the upper bottom surface and the lower bottom surface of the glass film. When a voltage is applied to the piezoelectric actuator, the piezoelectric actuator forces the glass film to bend, so that a lens structure is integrally formed, and the glass film has different bending curvatures due to different voltages, so that the focal length of the micro lens is changed. The piezoelectric drive type micro lens is a typical micron-sized MEMS integrated product, and has the advantages of small size, low power consumption, no magnetic interference, wide zoom range, quick response and the like.

The invention discloses a fog penetrating lens and a camera. The fog penetrating lens sequentially comprises a front fixing group (G1), a zooming group (G2), a back fixing group (G3), a focusing group (G4), a filter group and an imaging plane from an object side to an image side along the optical axis direction; the focal length is changed by the position change of the focusing group (G2) and the focusing group (G4) along the optical axis direction; the focal length f2 of the zooming group (G2), the focal length f4 of the focusing group (G4), the short focal length fw of the fog penetrating lens, and the long focal length ft of the fog penetrating lens meet the requirements shown in the description; the light rays pass through the front fixing group, the zooming group, the back fixing group, the focusing group and the filter group, and the imaging deviation on the imaging plane is smaller than the threshold deviation. The fog penetrating lens has the advantage that the spherical aberration, coma, astigmatism, field curvature, chromatism of magnification, chromatism of position, and the like of a lens system can be automatically calibrated to the ideal range, so that the properties of glimmer aperture, high resolution, infrared night vision and multi-level fog penetrating are realized.

The invention relates to a self-adaptive closed loop adjustment laser range finding method and device and belongs to the field of laser range finding. A liquid lens is used for replacing a common lens in a measurement system, liquid is used as a medium in the liquid lens, curvatures of two curved surfaces of the liquid lens can be changed via impressed voltage, a focal length of the liquid lens can be further changed, relative positions of light spots and a detector photosensitive surface are observed via use of an infrared camera, and therefore an aim of self-adaptive closed loop adjustment laser range finding can be attained; according to the self-adaptive closed loop adjustment laser range finding method and device, a self-adaptive closed loop can be used for controlling the liquid lens, curvature radiuses of the two curved surfaces of the liquid lens can be changed, the focal length of the liquid lens is therefore changed, and echo light spots are enabled to defocus; the method and device can help prevent problems of large energy design of the echo light spots, easy saturation of the detector and lowered precision during short quarter range finding operation. A range finding scope can therefore enlarged, and measurement precision can be improved.

The invention discloses an endoscope objective lens zoom optical system, which sequentially comprises a fixed lens group with negative focal power and a zoom lens group with positive focal power alongthe optical axis of the optical system from the object side to the image side, wherein the zoom lens group can change the focal length of the endoscope objective lens zoom optical system by moving along the optical axis. The invention relates to a high-performance endoscope objective lens optical system which has a large enough magnification factor and can perform 500-1000-time microscopic magnification observation under an endoscope. During common observation, the field angle of the endoscope lens can reach 140 degrees, and accurate imaging diagnosis can be carried out on diseased tissues ofa human body.

The invention discloses a compact type focal length switchable zooming lens, comprising a first fixed optical lens, an optical lens switching panel, a switchable optical lens group arranged on a switchable panel of the optical lens switching panel, wherein the switchable optical lens group comprises a plurality of switching lenses having various curvatures and / or made of various materials; all switching lenses are arranged in the same plane; the optical axis of each switching lens is aligned with the optical axis of the first fixed optical lens under the driving of the optical lens switching panel. In the invention, the lens can choose to switch the needed lens in the optical lens group according to the needs, and the focal length of the integral lens is changed so as to achieves the focal-length changing capability.

An active matrix focusing lens and focusing glasses having the same are provided. The active matrix focusing lens comprises a lens body and a transparent phase modulator which includes a first substrate, a second substrate, a plurality of data electrode lines and scan electrode lines which are disposed on the first substrate and spaced apart from each other, a plurality of photoelectric switches disposed on the first substrate and electrically connected to the data electrode lines and the scan electrode lines, and a liquid crystal layer disposed between the first substrate and the second substrate. Any two adjacent data electrode lines and the scan electrode lines collectively define a pixel region. When a voltage is applied to the photoelectric switches, the corresponding pixel regions have different refractive indices, and the focal length of the active matrix focusing lens is changed, so that the same pair of lenses can be switched to look far or near, without preparing multiple glasses to cope with looking far or near. It is also possible to adjust different focal lengths for respective pixel regions so that different positions of the entire lens can have different focal lengths at the same time.

The invention relates to a stage lighting system for improving uniformity of light spots. The stage lighting system comprises a light source and a reflection cup which are sequentially arranged along a main optical axis. The stage lighting system further comprises a first optical assembly arranged between a first focus point and a second focus point of the reflection cup. The first optical assembly is a single lens array or a combination of array lenses and lenses or a combination of array lenses and array lenses. The first optical assembly splits a whole optical beam into narrow optical beams and superposes the narrow optical beams again, and light energy is effectively and evenly utilized, and therefore the uniformity of the light spots is improved; and contradiction of optical efficiency and uniformity of an existing stage lighting system is solved, and the uniformity of the light spots is improved under the condition of extremely-low optical losses. The first optical assembly can shift in or out of an optical path through a drive mechanism; when the first optical assembly shifts out of the main optical shaft of the system, the middle optical beam of the formed optical beam is very converged; and when the optical assembly shifts in the main optical shaft, the uniform effect of the light spots is achieved.