50results about How to "Improve focus performance" patented technology

An objective lens for an endoscope, an actuator for focusing the objective lens, and an endoscope system including the objective lens are provided. The objective lens for an endoscope includes a plurality of lenses and a stop, and an optical element disposed adjacent to the stop, wherein a focal length may be varied by moving the optical element in a direction different from an optical axis.

A receiving antenna of a wireless power receiving device wirelessly charging electric power according to an embodiment of the present invention includes a substrate, a soft magnetic layer stacked on the substrate, and a receiving coil configured to receive electromagnetic energy emitted from a wireless power transmission device, wound in parallel with a plane of the soft magnetic layer, and formed inside of the soft magnetic layer, and an insulating layer is formed between the soft magnetic layer and the receiving coil.

A receiving antenna of a wireless power receiving device wirelessly charging electric power according to an embodiment of the present invention includes a substrate, a first soft magnetic layer stacked on the substrate, and including a soft magnetic material, and a receiving coil configured to receive electromagnetic energy emitted from a wireless power transmission device, and including a first coil layer wound in parallel with the soft magnetic layer, and a second coil layer electrically connected to the first coil layer and wound in parallel with the first coil layer, and a current direction of the first coil layer is opposite to a current direction of the second coil layer.

An ultrasonic therapeutic device capable of multipoint transmitting includes a substrate (5), on which an ultrasonic transducer array is arranged. Wherein, each of the ultrasonic transducers in the ultrasonic transducer array can independently focus. The device of the present invention has a simple structure and a good focusing performance. There is no interference among the ultrasonic transducers. Therefore, the energy of ultrasonic wave is transmitted by predetermined route with high utilization ratio.

This invention provides an optical image capturing lens system comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element; a third lens element; a fourth lens element; and a fifth lens element with negative refractive power, at least one of the object-side and image-side surfaces thereof being aspheric, and at least one inflection point is formed on at least one of the object-side and image-side surfaces thereof; wherein the system at least has one front stop and one rear stop; which are positioned between an imaged object and the third lens element as well as between the third lens element and the fifth lens element, respectively. By such arrangement, photosensitivity and total track length of the system can be reduced, and the aberration and astigmatism of the system can be effectively corrected. Moreover, the focusing performance thereof can be improved.

An apparatus and a method is introduced by which infrared image analysing automatic focusing is made possible. The invention among others comprises a focus function to be used by a search operation in order to control a moving means (50) adjusting a focusing optical convergence arrangement (20). Usage of the invention enables a fast and efficient way of obtaining a focused image although the infrared optical system is a difficult system and a not particularly rewarding technique in the past.

A transmittance overcoat with effectively planar top surface and specified optical and materials properties is applied above a microlens layer to extend the focal length and enhance the performance of long focal length microlenses for semiconductor array color imaging devices. The geometrical optics design factors and microelectric fabrication sequence to achieve optimized long focal length microlens performance are disclosed. The principal advantages of the adaptive process taught in the present invention is shown to enable real-time compensation adjustments for process and material variations. The overcoat process enables simplified single-layer integrated microlens optics for low-cost, high volume manufacturing of CMOS and CCD color video cameras.

A focusing technique detects motion vectors of a plurality of images, combines the images in accordance with the detected motion vectors, extracts a signal corresponding to a focusing state of a lens unit with respect to a subject, and controls the lens unit in accordance with the extracted signal to perform focusing.

A polarizing beam splitter includes: first and second prisms each having first and second end surfaces serving as an input surface or an output surface of light and an opposed surface as side surfaces of a pillar-like member; and at least two parallel flat layers disposed in parallel between the opposed surfaces of the first and second prisms. Here, one of the least two parallel flat layers is a first parallel flat layer polarization-separating the input beam. When it is assumed that the refractive index of a base material of the first and second prisms is Np, the resultant refractive index of the parallel flat layers other than the other parallel flat layer of the at least two parallel flat layers is Na, and the refractive index of the other parallel flat layer of the at least two parallel flat layers is Nb, (Na−Np)×(Nb−Np)<0 is satisfied.

A method for controlling a histotripsy using a confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses, including: 1) positioning a target tissue by a monitoring and guiding system and adjusting a position of the target tissue to a focal point of a transducer; 2) first stage: controlling the confocal fundamental and harmonic superposition combined with hundred-microsecond ultrasound pulses to form a shock wave in a focal zone; wherein a negative acoustic pressure exceeds a cavitation threshold; an inertial cavitation occurs to generate boiling bubbles; the boiling bubbles collapse and achieve partial homogenization of the target tissue; 3) second stage: controlling the confocal fundamental and harmonic superposition combined with hundred-microsecond pulsed-ultrasound sequences to simultaneously irradiate a target zone and further mechanically disintegrate and homogenize the target tissue.

This invention provides an optical image capturing lens system comprising: a first lens element with positive refractive power having a convex object-side surface; a second lens element; a third lens element; a fourth lens element; and a fifth lens element with negative refractive power, at least one of the object-side and image-side surfaces thereof being aspheric, and at least one inflection point is formed on at least one of the object-side and image-side surfaces thereof; wherein the system at least has one front stop and one rear stop; which are positioned between an imaged object and the third lens element as well as between the third lens element and the fifth lens element, respectively. By such arrangement, photosensitivity and total track length of the system can be reduced, and the aberration and astigmatism of the system can be effectively corrected. Moreover, the focusing performance thereof can be improved.

Provided are a large-current and highly stable gas field ionization ion source, and a high-resolution ion microscope with a large focal depth.The present invention relates to an ion microscope provided with a gas field ionization ion source, in which disposed are a refrigerator for cooling the gas field ionization ion source independent of the main body of the ion microscope, and a refrigerant circulation circuit cooling mechanism for circulating a refrigerant between the gas field ionization ion source and the refrigerator. Consequently it is possible to reduce the mechanical vibration of the refrigerator, which propagates to the gas field ionization ion source, and to achieve both the improvement of the brightness of the ion source and the improvement of ion beam focusing performance.

A microchip with capillaries and method for making same is described. A sacrificial material fills microchannels formed in a polymeric substrate, the filled microchannels are covered by a top cover to form filed capillaries, and the sacrificial material is removed to form the microcapillaries. The sacrificial material fills the microchannels as a liquid whereupon it becomes solid in the microchannels, and is liquefied after the top cover is applied and affixed to remove the sacrificial material. The top cover may be solvent sealed on the substrate and of the same or different material as the substrate. The top cover may also be an in situ applied semipermeable membrane.

An image capturing apparatus comprising: an image sensor controlled at different readout intervals in a plurality of different regions; a selection unit configured to select one of a first image signal read out from a first region and a second image signal read out from a second region that is controlled at a readout interval shorter than those of the first region; a detection unit configured to detect a focus state level based on an image signal read out from the image sensor; and a focus control unit configured to, based on the focus state level detected by the detection unit based on the image signal selected by the selection unit, control a focus lens. The first image signal is used for at least one of display in a display unit and storage in a storage medium.

A liquid optical lens, including a transparent container, an elastic membrane, a first liquid and a second liquid, is provided. The transparent container is divided into a first chamber and a second chamber by the elastic membrane. The first liquid fills the first chamber. The second liquid fills the second chamber. The curvature of the elastic membrane is regulated by changing the volume ratio between the first liquid and the second liquid, so as to adjust the focal length of the liquid optical lens. Moreover, a liquid optical lens module including the above liquid optical lens and a volume adjustment mechanism is also provided. The focal length of the liquid optical lens can be precisely adjusted by using the volume adjustment mechanism.

An optical inspection system can include an optical coherent tomography (OCT) tool having an optical column with a beam splitter optically coupled to an objective. Illumination optics are coupled to the beam splitter. An OCT focusing system is optically coupled to the objective via the beam splitter. The OCT focusing system includes a broadband light source, a reflector, a photo-detector, all of which are connected by optical fiber to a fiber coupler in an interferometer configuration. The objective is optically coupled to the fiber coupler in the OCT focusing system by an optical fiber.

The present invention is directed to the provision of an automatic focusing apparatus that can detect a focusing point at a sufficiently high speed for practical use and can achieve a lens condition having good focusing performance. The automatic focusing apparatus of the present invention includes a liquid crystal lens which forms a refractive index profile, an optical-to-electrical conversion unit which converts an optical image focused through the liquid crystal lens into an electrical signal and outputs the electrical signal as an image signal, a focus signal extracting unit which causes the refractive index profile to change by applying a first range of voltage to the liquid crystal lens, and extracts a plurality of focus signals based on the image signal, a focusing point identifying unit which identifies a focus signal corresponding to a focusing point from among the plurality of extracted focus signals, and a focusing point adjusting unit which adjusts the focusing point by applying to the liquid crystal lens a second voltage that is capable of generating the refractive index profile corresponding to the focus signal identified by the focusing point identifying unit and that is smaller than the first range of voltage applied to the liquid crystal lens in order to obtain the focus signal identified by the focusing point identifying unit.

A receiving antenna of a wireless power receiving apparatus for wireless power charging according to one embodiment of the present invention comprises: a substrate; a soft magnetic layer disposed on the substrate; and a receiving coil which is wound in parallel with a plane of the soft magnetic layer and is embedded on one surface of the soft magnetic layer, wherein at least one surface of the receiving coil is slantly embedded on the one surface of the soft magnetic layer.

A polarizing beam splitter includes: first and second prisms each having first and second end surfaces serving as an input surface or an output surface of light and an opposed surface as side surfaces of a pillar-like member; and at least two parallel flat layers disposed in parallel between the opposed surfaces of the first and second prisms. Here, one of the least two parallel flat layers is a first parallel flat layer polarization-separating the input beam. When it is assumed that the refractive index of a base material of the first and second prisms is Np, the resultant refractive index of the parallel flat layers other than the other parallel flat layer of the at least two parallel flat layers is Na, and the refractive index of the other parallel flat layer of the at least two parallel flat layers is Nb, (Na−Np)×(Nb−Np)<0 is satisfied.

A device, method and a computer program product are shown for correcting the focus error in an optical device, wherein in a first position of the optical device at least one focus detector is focused onto a given image plane of the target subject and the distance (d1) between the optical device and the given image plane is locked and wherein in a second position of the optical device following a reorientation of the optical device for achieving the desired framing of the image the shutter is released, the method comprising sensing a distance vector parallel to the focus plane after reorientation between the first position and the second position after reorientation, calculating a focus correction value (de) from the sensed distance vector and adding the focus correction value (de) as a corrective to the locked focus distance (d1).

A light distribution system for freezer that includes a LED strip light disposed on a freezer door. The LED strip lamp includes a lamp holder, a strip-shaped polarizing lens, and a plurality of LED chips. The lamp holder includes a lens setting surface and a reflecting surface. The strip-shaped polarizing lens includes a plurality of optical axis, an incident surface, a first and second convex lens exit surfaces, and a transition surface. An angle between the illuminated surface and the optical axis includes an acute angle and the illuminated surface includes a main light region illuminated by the outgoing light of the first and second convex lens exit surfaces and a sub-light region illuminated by the reflected light from the reflecting surface.

A device, method and a computer program product are shown for correcting the focus error in an optical device, wherein in a first position of the optical device at least one focus detector is focused onto a given image plane of the target subject and the distance (d1) between the optical device and the given image plane is locked and wherein in a second position of the optical device following a reorientation of the optical device for achieving the desired framing of the image the shutter is released, the method comprising sensing a distance vector parallel to the focus plane after reorientation between the first position and the second position after reorientation, calculating a focus correction value (de) from the sensed distance vector and adding the focus correction value (de) as a corrective to the locked focus distance (d1).

A focus adjustable method of an optical image is implemented by a numerical analysis. An external light beam is allowed to pass through a lens module, thereby generating an optical image. The focus values of the optical image at four corners thereof are computed according to specified formulas to obtain a two-dimensional geometric tilt vector T(X,Y), an image diagonal spinor D and an image tetragonal average value M. According to the values T(X,Y), D and M, the tilt amount and the tilt direction of the lens module are adjusted, the optical quality of the lens module is discriminated and the focus value distribution of the lens module is determined.

A combination of a focusing element, and a filtering element which naturally adjusts the cross-sectional area of a beam of electromagnetic radiation passed through the focusing element as a function of wavelength, optionally as an element of an ellipsometer or polarimeter system.

The present invention aims at maintaining the high focusing performance with a low deflection power in a projection tube which is used as a projection type TV receiver or a projector and is operated at a high voltage and with a single-electron-beam high current. A neck outer diameter of a portion on which a deflection yoke is mounted is made smaller than a neck outer diameter of a portion which accommodates an electron gun. A final electrode of the electron gun has a diameter thereof gradually decreased toward a phosphor screen. The maximum anode voltage of the projection tube is set to equal to or more than 25 KV and the maximum beam current is set to equal to or more than 4 mA.

A receiving antenna of a wireless power receiving device wirelessly charging electric power according to an embodiment of the present invention includes a substrate, a soft magnetic layer stacked on the substrate, and a receiving coil configured to receive electromagnetic energy emitted from a wireless power transmission device, wound in parallel with a plane of the soft magnetic layer, and formed inside of the soft magnetic layer, and an insulating layer is formed between the soft magnetic layer and the receiving coil.

A focusing technique detects motion vectors of a plurality of images, combines the images in accordance with the detected motion vectors, extracts a signal corresponding to a focusing state of a lens unit with respect to a subject, and controls the lens unit in accordance with the extracted signal to perform focusing.

A microchip with capillaries and method for making same is described. A sacrificial material fills microchannels formed in a polymeric substrate, the filled microchannels are covered by a top cover to form filed capillaries, and the sacrificial material is removed to form the microcapillaries. The sacrificial material fills the microchannels as a liquid whereupon it becomes solid in the microchannels, and is liquefied after the top cover is applied and affixed to remove the sacrificial material. The top cover may be solvent sealed on the substrate and of the same or different material as the substrate. The top cover may also be an in situ applied semipermeable membrane.