163results about How to "Adjust focus" patented technology

A head mounted display system having a virtual keyboard and capable of adjusting a focus of a display screen comprises a signal processing unit; a focus adjustment unit; an image display unit connected to the signal processing unit; the image display unit being installed at a head mounted display device for displaying the adjusted display image which is directly viewed by at least one eye of a user wearing the head mounted display; and a focus input unit connected to the focus adjustment unit; focus input unit being a manually operation device for generating the focus adjustment signal to the signal processing unit; the focus input unit providing a focus value to the focus adjustment unit; and a virtual keyboard input unit including a finger positioning unit, a keyboard display unit, a keying processing unit and a virtual keyboard. The device for realizing the system is further included.

The invention is related to a standoff comprising an acoustic coupling medium for use with an ultrasound transducer, comprising a first portion of tubular shape having a constant cross sectional area with an axis defining the direction of sound propagation and being adapted to be interfaced to the transducer, and a second portion of tapered shape being coaxial to the first portion. The second portion has a proximal end connected to the first, wherein the cross sectional area at a distal end of the second portion is smaller than the cross sectional area at the proximal end. The invention is further related to an envelope which is adapted to enclose the first and / or second portion of the standoff. The invention provides an improved acoustic standoff which is adapted for small and / or superficial structures.

A method of optimizing locations of correction elements of a charged particle beam system determines respective corrector element currents to achieve optimum correction as a function of individual corrector location. Substantially complete dynamic correction of FSD and SFD can be obtained consistent with efficiency of operation and minimization of deflection distortion. In particular, FSD and SFD corrections can be sufficiently separated for substantially complete correction of SFD and FSD simultaneously with two stigmators. Both of these types of correction can be provided in complex charged particle beam systems employing curvilinear axis (CVA) particle trajectories and or large area reduction projection optics (LARPO) which cause complex hybrid aberrations in order to achieve high throughput consistent with extremely high resolution supporting one-tenth micron minimum feature size lithography regimes and smaller.

High-accuracy focus adjustment is achieved even when vignetting is caused by a taking lens. A first pixel group receives a light beam that passes through a first pupil area of an optical system that forms an object image, and a second pixel group receives a light beam that passes through a second pupil area. A first signal based on an output signal from the first pixel group and a second signal based on an output signal from the second pixel group are corrected using correction information with a sampling pitch that is changed in accordance with an amount of defocus. A focal state of the optical system is adjusted based on an amount of relative displacement between the corrected first signal and the corrected second signal after the image-signal correction process.

A focus adjustment device comprising: a first detector 221 which detects a focused state by a contrast detection system; second detectors 222a, 222b which detect a focused state by a phase difference detection system; and a control unit 21 which controls the first detector 221 and second detectors 222a, 222b so as to detect the focused state by the second detectors 222a, 222b when detecting the focused state by the first detector 221.

The present invention belongs to the field of non-damage endoscope technology, and is one bi-directional digital radio endoscope system for real-time image observation and whole digestive tract check via bi-directional radio communication. The system consists of readio transceiving digital endoscope video camera, portable radio receiving and data transmission unit and computerized controlling and processing unit. The endoscope video camera is equipped with adjustable-angle CCD camera, adjustable-focal length optical lens and lighting device for pick-up of 3D image. The system is operated in one of three operation modes: the united mode of the video camera and the radio receiving and data transmission unit, the united mode of the video camera and computerized controlling and processing unit, and the united mode of the video camera, the united mode of the video camera and computerized controlling and processing unit.

The present invention provides procedures and systems that use a closed-loop approach for directing ultrasound energy at a clot while monitoring blood flow and / or liquification of the clot tissue so as to allow automated and / or manual adjustments to various treatment parameters.

The invention discloses a camera module and a terminal device, and belongs to the technical field of electronics. The camera module comprises a rotatable reflector, a lens group, a shell and an image sensor; the shell comprises a first surface and a second surface; a first mirror surface of the rotatable reflector is a reflecting surface, and a part of the first mirror surface located in a first reflecting area is a first sub mirror surface; when the rotatable reflector is located at a first position, the first mirror surface reflects a first light signal, an image is generated after the reflected first light signal is transmitted along a straight line where an optical axis is located, when the rotatable reflector is located at a second position, the first mirror surface reflects a second light signal, and an image is generated after the reflected second light signal is transmitted along the straight line where the optical axis is located. According to the camera module provided by the embodiment of the invention, the function of double-channel shooting is realized by using just one rotatable reflector, thereby reducing the number of reflectors, shortening the size and saving the occupied space.

The invention provides a microspur imaging method and a terminal, relates to the technical field of photographing, and can solve the problem that the imaging quality of a photographed object is low when the photographed object is close to an image sensor in the prior art. The terminal comprises a camera module, an input component, an output component and a processor, wherein the camera module comprises a lens, a lens driving device and an image sensor from an object side to an image side; Wherein the lens is used for supporting clear imaging when the distance between a shot object and the image sensor is within a microspur range. And the lens driving device is used for driving the lens to move along the optical axis when the distance between the shot object and the image sensor is within the micro-distance range, and the driving stroke of the lens driving device is related to the latest focusing distance of the terminal. And the processor is used for controlling the lens driving deviceto enable the lens to focus the shot object. And the input part is used for receiving a shooting instruction input by a user, and the shooting instruction is used for shooting a focused picture. Andthe output part is used for outputting the shot picture.

Provided are a liquid crystal lens which controls an optical path, and a display including the liquid crystal lens. The liquid crystal lens includes a first and a second electrode which face each other, a liquid crystal layer interposed between the first electrode and the second electrode and has flat top and bottom surfaces, and a dielectric layer interposed between the second electrode and the liquid crystal layer, where the dielectric layer includes a first and a second dielectric sub-layer, the first dielectric sub-layer made of a material having a different dielectric constant from that of the second dielectric sub-layer, the first dielectric sub-layer includes one or more unit patterns, a surface of each of the unit patterns includes a plurality of flat sections, and a height of each of the unit patterns in a first flat section is different from the height thereof in a second flat section.

An image capturing apparatus and a control method thereof are provided. The image capturing apparatus comprises an image capturing unit configured to capture an image of an object via an optical system, a display unit configured to display the image captured by the image capturing unit on a screen, a detection unit configured to simultaneously detect a plurality of touch positions on the screen on which the image is displayed, and a control unit configured to adjust a focus state in accordance with a change in a distance between a first detected touch position and a second detected touch position, so as to change a focus area.

A molecular interferometric imaging system for detecting an analyte in a sample, that includes an illumination source providing a beam of radiation; a pixel array for detecting radiation in an image plane; a biolayer designed to react to the analyte when it comes in contact with the sample; a substrate designed to convert phase modulation into intensity modulation which can be detected and imaged directly by the pixel array, the biolayer being on the substrate; a reference surface; an image switching means for switching between a first position for collecting a sample image of the biolayer, and a second position for collecting a reference image of the reference surface; and a processing means for producing a composite image using the sample image and the reference image for illumination normalization.

Techniques, apparatus and systems for laser surgery including imaging-guided surgery techniques, apparatus and systems.

A control system of a PTZ (Pan Tilt Zoom) photographic device is applied to a handheld device which is connected with the PTZ photographic device through a network. When a user selects to access the PTZ photographic device, the control system transmits an initialized signal to the PTZ photographic device to enable a lens of the PTZ photographic device to be adjusted to the initial position and receives and displays obtained initial images in a monitoring area through photographing of the PTZ photographic device. The control system converts tilt information of the handheld device to rotating information of the lens according to preset relevance and sends the rotating information to the PTZ photographic device so as to control the lens to rotate correspondingly and receives obtained current images in the monitoring area through re-photographing after rotation of the lens. When the user performs zoom adjustment on the current images displayed on a display screen, the control system converts an adjustment ratio of the current images to an adjustment ratio of a focus length of the lens according to the preset relevance and sends the adjustment ratio of the focus length of the lens to the PTZ photographic device so as to adjust the focus length of the lens. The invention further provides a control method of the PTZ photographic device.

In an image capturing apparatus, an image sensing unit has a plurality of pixels and photoelectrically converts an object image formed by an optical imaging system including a focus lens and outputs an electrical image signal, a control unit controls at least a readout rate or an exposure condition independently for different regions of the image sensing unit, and a calculation unit calculates a plurality of focus evaluation values based on image signals read out from the pixels present in a focus detection area in one of the plurality of different regions at different focus lens positions, and find an in-focus position of the focus lens based on the focus evaluation values. The control unit takes an image signal read out from a first region among the plurality of different regions as an image signal for display.

A projection lens unit of a projection television (TV) includes a first lens group for focusing an image incident from an image generating source, a reflection mirror for reflecting the image projected from the first lens group, and a second lens group having the same optical axis as the optical axis of the first lens group for magnifying and projecting the image reflected from the reflection mirror to a screen. The first and second lens groups are installed in first and second single bodies, which are coupled to a third single body having the reflection mirror to reflect the image incident from the first single body to the second single body. By this arrangement, the focus of the projection lens unit is easily adjusted and the lens groups are conveniently coupled to each other. In addition, a defocused state of the projection lens unit can be easily minimized.

A focus-controlling apparatus adjusts a focus in an optical system. The apparatus includes a focus detecting unit, a storage unit, a focus area switching unit, and a drive control unit. The focus detecting unit detects de-focusing amounts of the optical system with respect to a plurality of objects that lie in a plurality of focus areas, respectively. The storage unit stores the de-focusing amounts detected for the respective focus areas. The focus area switching unit switches the focus areas, from one to another, in an order based on the de-focusing amounts stored in the storage unit. The drive control unit moves the optical system to a focus position corresponding to the de-focusing amount at any focus area switched by the focus area switching unit.

A voice coil motor (VCM) is disclosed, the VCM including: a stator including a magnet generating a first electromagnetic field; a mover including a bobbin formed with a hollow hole through which light passes and a coil formed on a periphery of the bobbin that generates a second electromagnetic field responsive to the first electromagnetic field; a base fixed at the stator and formed with an opening through which the light passes; and at least one elastic member elastically supporting the bobbin and forming a gap between the bobbin and the base when the coil is not applied with a current.

Methods and controllers for controlling focus of ultraviolet light produced by a lithographic imaging system, and apparatuses for forming an integrated circuit employing the same are provided. In an embodiment, a method includes providing a wafer having a resist film disposed thereon. The resist film is patterned through illumination of a lithography mask with ultraviolet light at an off-normal incidence angle with a first test pattern formed at a first pitch and a second test pattern formed at a second pitch different from the first pitch. Non-telecentricity induced shift of the first and second test patterns is measured to produce relative shift data using a measurement device. Focus of the ultraviolet light is adjusted based upon comparison of the relative shift data to a pre-determined correlation between the non-telecentricity induced shift of the first and second test patterns as a function of focus error.

The invention provides vehicle-mounted head-up projection display equipment. The equipment comprises a projection device and a reflecting screen which are arranged in a driving cab, wherein the projection device is connected with a vehicle-mounted information system; information required by a driver is projected to the reflecting screen in an optical mode through an optical means by the projection device, so that the information is transferred to the driver or a passenger; the equipment is characterized in that: the reflecting screen is arranged independent of devices which are not arranged for the purpose of reflecting light and can transmit light, such as windshield, glass for vehicle window and the like of vehicles. The reflecting screen is glass or organic glass and is provided with one or more plating layers, plating films, coating layers or sticking films for enhancing visible light reflection. By using the equipment, the cost of the vehicle-mounted projection display equipment can be reduced, the driving safety can be improved, and the design flexibility of the vehicle-mounted projection display equipment can be improved.

The invention relates to a novel composite structure liquid micromirror with a large zooming ratio. A micromirror chip is made of a transparent flexible material and is provided with three functional layers, i.e. a top layer, a middle layer and a bottom layer; a round microcavity is arranged in each functional layer; the centers of three round microcavities are vertically aligned with one another; each round microcavity is communicated with a pipeline with an inlet; the round microcavity in the middle layer is communicated with at least one liquid storage microcavity arranged in the same layer by a pipeline; pneumatic valves are arranged at the positions in the top layer and / or the bottom layer, which correspond to the liquid storage microcavities; valves of the pneumatic valves are all communicated with the pipeline with the inlet; the inlet is connected with a compressed gas pump; a composite micromirror group mirror with adjustable shape and state is formed by the three round microcavities; and under the action of the digital regulation and control of the valves on a control layer, the focal length of the micromirror can be accurately transformed between centimeters and hundreds of micrometers, so that the controllable large zooming ratio and the micromirror imaging are implemented.

A focusing structure for an LED lamp is provided. LED chips are provided in a main body of the LED lamp, a front end of the main body 1 is provided with a lens assembly. At least one of the LED chips 2 is not located on the axis of the LED lamp, and at least two groups of lenses with different degrees are provided on the lens assembly, the location of each group of lenses corresponding to a corresponding LED chip on the same circumference, and the lens assembly is connected to the main body with structures capable of relatively rotating and snap-fitting. The LED lamp can achieve the focusing function by rotating the lenses assembly to make the lenses with different degrees correspond to the LED chips. This structure has no light loss and can achieve the focusing function of various focal distances.

A vehicle driver assistance apparatus includes a camera provided in a vehicle and configured to acquire an image; and a processor configured to process the image. The camera includes an image sensor; and a variable lens that includes a liquid crystal layer and configured to alter the path of the light that is introduced into the image sensor based on an arrangement of liquid crystal molecules included in the liquid crystal layer. The arrangement of the liquid crystal molecules in the liquid crystal layer is dependent on an applied voltage.

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 discloses a laser pen focus regulator and a mobile terminal with the regulator, applied to a mobile terminal with laser pen, and the regulator comprises: driving motor, lens moving mechanism, and lens device, where the driving motor is connected with the lens moving mechanism and drives the lens moving mechanism to operate; the lens moving mechanism is fixed with the lens device to drive the lens device to move away / close in the laser beam emitting direction of the laser pen so as to implement regulating facular size of laser beam. When the laser pen operates, a user activates on-phone software by keys to drive the whole focus regulator to operate so as to regulate position of the lens device, i.e. regulating focus of laser beam, and finally implementing regulating the facular size of the laser beam.

An autostereoscopic 3D image display apparatus is disclosed. The autostereoscopic 3D image display apparatus in accordance with an embodiment of the present invention can include: an image display unit configured to display an image; a micro lens array arranged above the image display unit and configured to vary a focus of an image from the image display unit; and an electrode coated on the micro lens array and configured to have an electric signal supplied thereto to cause transformation of the micro lens array.

An inspection apparatus according to an aspect of the present invention includes an EUV light source 11, an illumination optical system 10 provided to apply the EUV light to an EUV mask 60, a concave mirror and a convex mirror 22 configured to reflect the EUV light reflected on the EUV mask 60, a camera 32 configured to detect EUV light reflected on the convex mirror 22 and thereby take an image of the EUV mask 60, an AF light source 16 configured to generate AF light having a wavelength of 450 nm to 650 nm, first and second detectors 27 and 30 configured to detect the AF light reflected on the EUV mask 60 through the concave mirror with the hole 21 and the convex mirror 22, and an processing device 31 configured to adjust a focus point of the EUV light on the EUV mask 60.