104results about How to "Adjustable focal length" patented technology

A method for beam guiding of a light beam generated by a light source to a target location along a path distance LS, comprises splitting the light beam on the path distance LS at least once into a first partial beam and a second partial beam, guiding the first partial beam additionally at least once along a delay line, the first partial beam thereby covering an additional path distance LD, guiding the second partial beam only along the path distance LS, combining the first and second partial beams after the first partial beam having passed through the delay line and guiding the combined beam to the target location, wherein the light beam is guided along the path distance LS and LD in such a way that the light beam generated by the light source has a predetermined beam width B at the target location, expanding the light beam between the light source and the target location at least once to a beam width B′>B and comprising the light beam again at least once in such a way that the light beam has the predetermined beam width B at the target location.

The invention provides a two-waveband infrared optical system, belongs to an infrared remote sensing optical system, and solves the problems of limited optical path layout of the conventional map-integrated device and large volume of the entire device. The system comprises a scanning rotating mirror, a two-waveband infrared optical lens, a spectrometer, an infrared focal plane detector and a signal processor, wherein the two-waveband infrared optical lens consists of an infrared window, a beam splitter, a medium wave lens and a long wave lens; the scanning rotating mirror is positioned above the infrared window; an infrared optical fiber transmits infrared light output by the medium wave lens to the spectrometer; the infrared focal plane detector is positioned on an output optical axis of the long wave lens; and output signals of the spectrometer and the infrared focal plane detector are transmitted to the signal processor through a transmission cable. The system has small volume, high integration level, and convenient and flexible use, can realize automatic scanning, identification and track of a target by observing two wavebands of external scenery, and can be effectively applied to military or civil fields of missile infrared guidance, atmospheric pollution, remote measurement of poisonous gas and the like.

The invention is a micro-flow control chip fluorescent detection optical device, comprising light source, filter plate, semitransparent semi-reflector, object lens group and photoelectric multiplier tube, and the structure of the detection optical device includes detecting light path, information collection interface and control interface. The invention is wide-application range, and flexible to adjust, the object lens group and the micro-channel of the micro-flow control chip automatically focus and the data processing is automatically completed by computer, quick and high-accuracy.

The invention provides a display device comprising a first display panel, a second display panel and an optical plate, wherein the first display panel is provided with a plurality of first display areas and is applicable to providing a first image. The second display panel is provided with is provided with a plurality of second display areas and is applicable to providing a second image. The optical plate is provided with a plurality of optical units capable of changing focus. The first display areas and the second display areas are arranged corresponding to the optical units, so that the first image can transmit through the optical units to form a first real image and the second image can also transmit through the optical units to form a second real image. The first real image is isolated from the optical plate by a first depth of focus, the second real image is isolated from the optical plate by a second depth of focus, and the first depth of focus and the second depth of focus are different from each other. The device can utilize different display images to form a three-dimensional stereo image, and a user can adjust the sound-surround ambiance of the three-dimensional stereo image according to the personnel interest thereof.

The invention discloses a focusing device, a shooting device with the focusing device and an air vehicle with the shooting device. The focusing device comprises a driving device and a transmission piece connected with the driving device. According to the focusing device, the focal length of the shooting device can be adjusted. Accordingly, the effect of a zoom lens can be achieved by shooting of the shooting device, and shooting experience is enriched.

The invention discloses a multi-channel focusable sample tank implementing raman spectrum detection. The multi-channel focusable sample tank comprises a base, a support, a sample holding and rotating mechanism, a vertical displacement mechanism and a horizontal displacement mechanism, wherein the sample holding and rotating mechanism is connected with the support through the vertical displacement mechanism; the support is connected with the base through the horizontal displacement mechanism; the sample holding and rotating mechanism comprises a bracket, and a sample holding seat, a stepping motor and a control unit, which are arranged on the bracket; the stepping motor is connected with the sample holding seat and drives the sample holding seat to rotate; the control unit is electrically connected with the stepping motor. With the adoption of the multi-channel focusable sample tank implementing raman spectrum detection, different samples can sequentially correspond to incidence laser without causing confusion; repeated replacing of sample bottles is avoided so that the time is shortened; meanwhile, the labor intensity of experimenters is relieved and the error possibility is reduced.

The invention is related to an examination paper score identification method and apparatus, the method is realized by identifying the script handwriting of the score through a multi-layer perception network and which involves the study training process and identification process, the apparatus includes a desktop for placing the test paper, an upper panel being parallel to the desktop supported by 3-4 adjustable columns, wherein a pick-up head aiming at the test paper score, a laser lamp radiating the score region and 1-4 auxiliary lamps illuminating the test paper are provided on the upper panel, and the pick-up head is connected with a computer. The apparatus is easy to construct and convenient in operation, it can identify the handwritten scores of the test papers accurately and efficiently, thereby capable of meeting with the demand of realistic application.

A double-optical path laser Doppler velocimeter includes a laser source, a light source beam splitter, a photoelectric receive and electronic process system and a focusing system, among which, the laser source, the beam splitter, the photoelectric receive and electronic process display system, a mobile lens and a fixed lens in the focusing system are set on the optical axis of the propagating direction of the laser source beam orderly from left to right to compose a measurement system. The moving direction of the object and the axis of the test system are vertical to the optical axis of the laser ranger, a step motor controller drives the step motor to drive the ballscrew based on the distance of the tested moving object to regulate the distance between the mobile and the fixed lenses to let the laser beam focus drop on the tested moving object accurately.

Multifunction chip inspection unit includes one frame, platform for holding chip, light path detecting module, light path inversion mechanism and control interface system. Said detecting light path in photoelectric detection module is located above chip platform, when reflection mirror of light path switch is in light path, array chip co-focusing scanning, miniflow control chip laser-induced fluorescence, and array chip CCD scanning can be completed. Said invention has wide applicability, flexible detecting light path regulation and data processing completed by computer.

A light head structure with adjustable focal length and a lighting device thereof. The light head structure includes a base, a threaded collar and a soft lens. The threaded collar has an assembling section, a receiving space for receiving the base therein and a protrusion section formed on an inner circumference of the threaded collar. The base has a recess for receiving a light-emitting element therein and an outer connection section for movably assembling with the assembling section. The soft lens has a focusing section in alignment with the light-emitting element. The focusing section has an extension section. The protrusion section of the threaded collar abuts against the extension section to attach the extension section to the outer circumference of the base. The thickness of the soft lens is adjustable to change the focal length and enhance the illumination. The lighting device can be easily manufactured to lower manufacturing cost.

The invention provides a liquid crystal lens with a focusing plane capable of being scanned and a manufacturing method thereof. The lens includes a first control layer, a second control layer, a liquid crystal layer and a control module; the liquid crystal layer is arranged between the first control layer and the second control layer; the control module is connected with the first control layer and the second control layer separately; the first control layer includes a first transparent base plate, a first driving electrode, a first insulation layer, a second driving electrode, a first alignment layer and a first high-impedance layer; the second control layer includes a second transparent base plate, a third common electrode, a second high-impedance layer and a second alignment layer. Thecraftsmanship of the liquid crystal lens is simple, not only can focal length adjustability of the liquid crystal lens be achieved, but also uniformly-spaced and seamless scanning switch of the focusing plane of the liquid crystal lens can be achieved, and therefore the effect of the dynamic liquid crystal lens is achieved.

The invention belongs to the technical field of ultrasonic nondestructive detection, and particularly relates to a focal length adjustable type electromagnetic ultrasonic phased array transducer for ultrasonic detection. The transducer comprises a permanent magnet (2) and an electromagnetic ultrasonic coil (4) which work in cooperation with a detected workpiece (6), the electromagnetic ultrasoniccoil (4) is attached to the outer surface of the detected workpiece (6), the electromagnetic ultrasonic coil (4) is composed of a plurality of independent coils of concentric circles with different diameters, a probe shell (1) is arranged outside the permanent magnets (2), a thin copper sheet (3) is arranged between the permanent magnet (2) and the electromagnetic ultrasonic coil (4), in the plurality of independent coils of concentric circles with different diameters, an adjustable relative delay delta t is formed between excitation currents of an inner ring coil and an outer ring coil. According to the focal length adjustable type electromagnetic ultrasonic phased array transducer, a phased array technology is applied into the electromagnetic ultrasonic transducer so that the effect of the electronically adjusting the focal length of the probe can be realized by changing the current phase of each coil, so that the application of the electromagnetic ultrasonic technology is wider.

The invention provides a self-focusing laser welding device, which belongs to the technical field of laser and in particular relates to the field of laser welding. Laser focusing in the self-focusing laser welding device does not need a conventional focusing lens or lens group, but is realized by utilizing the self-focusing effect of intense laser light in a highly-nonlinear medium. The self-focusing laser welding device aims to solve the technical problems of relatively higher cost, insufficient flexibility and easily drifting focus and the like in the conventional lens or lens group. The self-focusing laser welding device is characterized by consisting of a laser 1, a total reflection board 2, an I-shaped bracket 3, a laser self-focusing tube 4 and a workbench 5, wherein the intense laser light emitted by the laser is subjected to beam adjustment by a reflector panel plated with a highly-reflective coating and then vertically irradiates an incident window of the laser self-focusing tube to enter the laser self-focusing glass tube and be incident into liquid with a highly-nonlinear coefficient in the tube. Due to the highly-nonlinear effect of the liquid, the laser light is self-focused and is emitted from an emergent window when the intensity of the laser light is over a certain threshold. The device is suitable for the laser welding and application thereof.

The invention discloses an integrated external-damage-preventing target identification and intelligent early-warning system, which is composed of remote ends, a server end and mobile ends. The remoteends are monitoring systems installed on power transmission line towers, comprise a plurality of remote end nodes, and are responsible for on-site image acquisition, image transmission and sound-lightalarm; the server end is a power monitoring center server, and is responsible for image real-time processing, intelligent identification, filtering and automatic judgment of abnormal states, and remote and mobile end communication; the mobile ends are mobile intelligent equipment, are responsible for receiving on-site pictures and alarm prompts, and control remote end cameras and a sound-light alarming system. The integrated external-damage-preventing target identification and intelligent early-warning system transmits the acquired on-site images back to the server end in real time, the on-site images transmitted by means of the plurality of remote ends can be processed simultaneously at the server end, and an early-warning processing result is transmitted to the mobile terminals, so as to realize first-time personnel emergency rescue and maintenance, and ensure safe and reliable operation of power facilities.

Provided herein a tunable lens system including a lens having a transparent solid material; and a lens focus adjuster disposed below the lens, and configured such that its area contracts or expands based on the electric energy applied and transforms the shape of the lens correspondingly to the contracted or expanded area so as to adjust the focus of the lens.

The present invention provides an optical element, optical unit, and image-taking apparatus which can reduce heat generation in the optical element and accurately control a refractive index profile of the optical element. The optical element has a liquid crystal layer composed of transparent liquid crystal molecules; a first electrode placed along the liquid crystal layer; multiple transparent second electrodes placed along the liquid crystal layer on the opposite side of the liquid crystal layer from the first electrode, with a voltage being applied between the first electrode and each of the multiple transparent second electrodes; and multiple transparent transistors placed along the liquid crystal layer together with the multiple second electrodes to adjust the voltages applied to the multiple second electrodes.

The invention relates to a lens unit which comprises a first electrode, a second electrode, a cavity wall, non-polar liquid and conducting liquid. The cavity wall is positioned between the first electrode and the second electrode and forms a chamber with the first electrode and the second electrode. A first material is arranged on the surface of the first electrode and the surface of the first electrode adjacent to the cavity wall in the chamber. The non-polar liquid is filled at one side of the chamber close to the first electrode. The conducting liquid is filled at one side of the chamber close to the second electrode, and the conducting liquid and the non-polar liquid are immiscible. The lens unit can be applied to a lens module and a flat plate display.

The invention relates to a lens module, which comprises a lens barrel, at least two lens groups, at least one support and a focusing piece, wherein the lens barrel is provided with an opening which extends along the axial direction of the lens barrel; the support comprises a mounting part and an actuating part connected with the mounting part; at least one groove extending along a preset path is formed on the focusing piece; at least one lens group is mounted on the mounting part of the support; the mounting part is received in the lens barrel; and the actuating part passes through the opening and the end parts of the actuating part are arranged in the groove of the focusing piece in a sliding mode. The lens module can change the focus of the lens barrel through horizontal movement of the focusing piece, and has the advantages of simple integral driving structure, simple and convenient mounting and low cost. The invention also provides a camera module and a portable electronic product adopting the lens module.

The invention discloses an assembly method for an array-type lens. The assembly method includes the following steps: A, mounting a third lens set (60) in a lens barrel (70); B, assembling a second lens set (40); C, assembling a first spacer (30); D, assembling a first lens set (20); E, assembling a pressing ring (10). By the assembly method, a lens structure capable of correcting the problem of optical axis eccentricity can be utilized, and yield of the array-type lens is increased substantially by solving the problem of optical axis aligning.

The invention discloses an ultraviolet curing molding machine which comprises a constant-voltage power supply, a control device and an LED ultraviolet irradiating head. The control device comprises a master control board, a keyboard plate, a data processing module, a liquid crystal display and an irradiating head interface, and the keyboard plate, the data processing module, the liquid crystal display and the irradiating head interface are electrically connected with the master control board; the constant-voltage power supply is electrically connected with the master control board of the control device; and the LED ultraviolet irradiating head is electrically connected with the irradiating head interface of the control device. The ultraviolet curing molding machine has the advantages that UV (ultraviolet) resin materials are cured by the aid of an ultraviolet LED cold light source, so that electric energy consumption is reduced, the curing cost is saved, the requirement on environmental protection is met, and the ultraviolet curing molding machine can be used flexibly and conveniently and has an excellent popularization prospect.

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.

A method for beam guiding of a light beam generated by a light source to a target location along a path distance LS, comprises splitting the light beam on the path distance LS at least once into a first partial beam and a second partial beam, guiding the first partial beam additionally at least once along a delay line, the first partial beam thereby covering an additional path distance LD, guiding the second partial beam only along the path distance LS, combining the first and second partial beams after the first partial beam having passed through the delay line and guiding the combined beam to the target location, wherein the light beam is guided along the path distance LS and LD in such a way that the light beam generated by the light source has a predetermined beam width B at the target location, expanding the light beam between the light source and the target location at least once to a beam width B′>B and comprising the light beam again at least once in such a way that the light beam has the predetermined beam width B at the target location.

The invention relates to the field of medical instruments, and particularly discloses a high-definition colonoscopy system. The high definition colonoscopy system comprises a main controller provided with a displayer. The high-definition colonoscopy system is characterized in that the main controller is connected with an endoscope through a data line, the endoscope comprises a handle with the end provided with a microscope, the front end of the lens of the microscope is connected with a connecting pipe through a bayonet, the bayonet is internally provided with an optical fiber circuit connected with the main controller, and the connecting pipe is sleeved with a disposable telescope. The high-definition colonoscopy system is simple in structure, convenient to use, reasonable in design and flexible in application, and has the functions of freezing, playing back, collecting, storing, measuring focuses, the lesion states of the interior the enteric cavity can be clearly detected, the result is accurate and visual, and the high-definition colonoscopy system is suitable for being widely applied to anus and anal tube disease detection.

The invention relates to a laser cleaning device and method, in particular to a laser cleaning method and device based on coaxial distance measurement and focal length real-time adjustment, and the problem that an existing laser cleaning method cannot overcome the poor cleaning effect caused by manual handheld shaking and complex workpiece surface structures. According to the method, cleaning lasers and ranging lasers are coaxially transmitted and focused on the surface of a workpiece, the lasers diffused and reflected by the workpiece are separated by a dichroic light splitting plain film, the ranging lasers are received by a photoelectric detection device, the real-time distance change amount of the workpiece is obtained and converted into an electric signal to control the distance change between optical elements, and the focal length of a dynamic lens set is accurately regulated and controlled. Meanwhile, the invention further provides a laser cleaning device based on the method. The laser cleaning device comprises a laser coaxial transmission and separation system, the dynamic lens set and a digital control circuit, and automatic focal length adjustment is achieved by changingthe distance between a convex lens of the dynamic lens set and a field lens in real time.

An image sensor including partition patterns includes: a substrate; photo-sensing elements formed in the substrate, each photo-sensing element responsive to light to produce a photo-sensing electricalsignal; an antireflection layer formed over of the photo-sensing elements and structured to reduce optical reflection to facilitate optical transmission of incident light to the photo-sensing elements through the antireflection layer; color filters formed over the antireflection layer and arranged to spatially correspond to the photo-sensing elements, respectively, each color filter structured toselect a designated color in the incident light to transmit through to a corresponding photo-sensing element; and partition patterns formed over the antireflection layer and arranged to spatially correspond to the photo-sensing elements, respectively, to partition light receiving area above the photo-sensing elements into separate light receiving areas, each partition pattern surrounding a corresponding color filter to be separate from an adjacent color filter; grooves formed in upper portions of the partition patterns, and providing air gaps between the adjacent partition patterns; micro lenses formed over the partition patterns and the color filters to direct incident light to the photo-sensing elements through the color filters, respectively. The micro lenses may be separated from oneanother by the grooves.

The present invention provides a display panel and a display apparatus using the same. The display panel comprises: a first substrate; a second substrate; a liquid crystal layer disposed between the first substrate and the second substrate; an image sensing module disposed on one side of the second substrate facing the first substrate; a lens array disposed on one side of the first substrate facing the second substrate and on a position corresponding to the image sensing module; and an active switch array disposed on the side of the second substrate facing the first substrate, wherein the image sensing module is configured to receive the focused image light.

The invention discloses a device for measuring the height of an overhead line. The device at least comprises an overhead line observation device which is connected to a vertical angle measuring instrument through an observation device connecting piece. The overhead line observation device and the vertical angle measuring instrument are connected to the side face of a distance measuring device clamp seat through the observation device connecting piece. A laser distance measuring device is installed above the distance measuring device clamp seat. The bottom of the distance measuring device clamp seat is connected to a telescopic bracket through a nut. According to the device for measuring the height of an overhead line, the overhead line observation device and the vertical angle measuring instrument are combined to carry out the accurate measurement of a vertical angle, the laser distance measuring device is used to measure a horizontal distance, through the measured vertical angle and the horizontal distance, a corresponding overhead line height is conveniently, rapidly and accurately calculated, the strength of a field operation is reduced, the electric shock risk in a field operation process is reduced, at the same time, the working efficiency is improved, and the device for measuring the height of an overhead line is especially suitable for measuring a line height in the vertical section measurement of a field overhead line.