969 results about "Laser probing" patented technology

The present invention provides an optical device/method for enhancing local administration of pharmaceutical compounds and/or collection of biomaterials. Such device/method is used for various situations which require high concentrations of drugs that are delivered locally.

Systems and methods consistent with principles of the present invention allow contactless measuring of various kinds of electrical activity within an integrated circuit. The invention can be used for high-bandwidth, at speed testing of various devices on a wafer during the various stages of device processing, or on packaged parts at the end of the manufacturing cycle. Power is applied to the test circuit using conventional mechanical probes or other means, such as CW laser light applied to a photoreceiver provided on the test circuit. The electrical test signal is introduced into the test circuit by stimulating the circuit using a contactless method, such as by directing the output of one or more modelocked lasers onto high-speed receivers on the circuit, or by using a high-speed pulsed diode laser. The electrical activity within the circuit in response to the test signal is sensed by a receiver element, such as a time-resolved photon counting detector, a static emission camera system, or by an active laser probing system. The collected information is used for a variety of purposes, including manufacturing process monitoring, new process qualification, and model verification.

Systems that measure temperatures of tissue during electrosurgery or laser therapy of the tissue or organs is provided. One system provides a pyrometer that measures infrared electromagnetic energy emitted by a surface of a tissue or organ thereby determining a sub-surface temperature of the tissue or organ. The system further has an energy generator and an ablation electrode or laser probe that delivers energy from the energy generator to a tissue or organ, responsive to a sub-surface temperature determined by the pyrometer. The pyrometer can be calibrated using a luminescent material having known optical properties as a function of temperature. The luminescent material can be positioned on the surface of the tissue or organ or inserted directly into the tissue or organ using a catheter. Methods in which the surface or sub-surface temperature of the tissue is measured during therapy are also provided.

The invention provides a composite three-dimensional point laser measurement system and a measurement method, comprising three-dimensional scanning and three-dimensional detection. Normal optical scanning is adopted so as to obtain the profile information of the article quickly and establish a three-dimensional model; motion trajectory planning is carried out by the profile data; and a point laser probe is guided to carry out more precise measurement so as to obtain the three-dimensional point cloud data of higher precision and higher quality. The three-dimensional non-contact detection to the characteristic position, appointed section line and integer of the workpiece is obtained further on the basis of comparing the point cloud and model data. The system and the method have the advantages that the non-contact measurement can obtain the point cloud of good quality and high precision, the article can be positioned freely, precise clamping devices are not needed, the measurement speed is quick, the process is automatic and the measured article has wide applicable range.

An ophthalmic surgery illuminated directional laser probe has a handle and a rigid tubular tip projecting from the handle, and has an illumination optic fiber and a laser optic fiber that extend through the handle and the tip. A mechanism on the handle is operable to extend distal ends of the illumination optic fiber and the laser optic fiber from the distal end of the instrument tip, and to retract the distal ends of the illumination optic fiber and the laser optic fiber back into the interior of the tip. At least one of the distal ends of the illumination optic fiber and the laser optic fiber is held in a curved configuration. The distal ends of the illumination optic fiber and the laser optic fiber are secured to each other, whereby both the illumination optic fiber and the laser optic fiber curve into a bent configuration as the distal ends of the illumination optic fiber and the laser optic fiber are extended from the distal end of the instrument tip.

A laser probe with a replaceable optic fiber may include a reusable handle, a reusable housing tube, a reusable handle adapter, a reusable machine adapter, and a replaceable optic fiber. The handle adapter may interface with a proximal end of the handle. The machine adapter may interface with a surgical machine. The replaceable optic fiber may include an optic fiber having a first optic fiber end and a second optic fiber end, a first connector, and a second connector. The optic fiber may be disposed within the first connector and the second connector. The first connector may be temporarily fixed within the handle adapter and the second connector may be temporarily fixed within the machine adapter.

The invention discloses a terahertz pulse measurement-based burning temperature sensing device and a terahertz pulse measurement-based burning temperature sensing method. Laser is emitted from a femtosecond laser device, and is divided into reference laser and detection laser through a beam splitter, the detection laser is focused on a photoconduction antenna type terahertz emitter, terahertz pulses emitted by the terahertz emitter are focused on a ZnTe crystal through an off-axis paraboloid lens group; and the reference layer is collimated and is coincident with terahertz waves focused on the ZnTe crystal after passing through a semi-transmission and self-reflection mirror, parallel grating groups and a polarizing film, the terahertz waves are modulated by using Pockels effect of the ZnTe crystal, and image signals corresponding to collected first reference layer carrying terahertz pulse strength information and second reference laser not carrying the terahertz pulse strength information are input into a computer by a CCD (Charge Coupling Device) detector for subsequence processing. According to the invention, the precision and speed of the non-contact combustion measurement method are increased, and the non-contact measurement of combustion object temperature and temperature distribution is realized.

A method for aircraft surface contamination detection and measurement includes: mounting a laser probe on an airfoil; positioning the laser probe to emit laser energy at multiple pre-determined surface points along the leading edge of the airfoil; and using a processor device for activating the laser probe and obtaining measurement data for generating a surface contour of the shape and accurate measurement of the depth of airfoil icing in the surface target area. The icing data is presented to the pilot in a display that alerts him to the icing and accurately shows the depth and shape of the airfoil icing.

An optic fiber surgical instrument is removably connectable to a surgical light source. The instrument is provided with an optic fiber connector and a separate auxiliary or electric identification connector. The optic fiber connector is removably connectable to a laser light output of a laser light source to convey the laser light through the optic fiber of the instrument, whereby manipulation of the instrument by a user can direct the laser light to a surgical site. The auxiliary connector is connectable to a ground connection of the surgical light source to establish an electric circuit through the instrument and the surgical light source, whereby an electrical identification device on the instrument identifies the instrument for the surgical light source.

A surgical probe includes a cannula assembly, having a graded index (GRIN) fiber that is configured to receive a multi-spot light beam at a proximal end and to emit the multi-spot light beam at a distal end ; an adapter, having a distal end, configured to receive the cannula assembly, with the proximal end of the GRIN fiber, a proximal end, configured to couple to a light guide via a connector and to receive a light delivered by the light guide from a laser source to the adapter, and an interface, configured to couple the light delivered by the light guide to the proximal end of the GRIN fiber; wherein a length of the GRIN fiber is sufficiently long that the interface is outside a patient's eye during a photocoagulation procedure.

The invention belongs to the technical field of laser probing, in particular to a laser probe micro-area component analyzer based on a double laser light source. The laser probe micro-area component analyzer comprises a fixed wavelength laser device, an attenuator, a beam expanding mirror and an aperture diaphragm; first semi-permeable half-mirrors are arranged on the same horizontal light path according to the structure; after a wavelength tunable laser device is reflected onto the first semi-permeable half-mirrors by a second totally reflecting mirror, the wavelength tunable laser device has the same light path with the laser beam of the fixed wavelength laser device; the fixed wavelength laser device and the wavelength tunable laser device can be arranged up and down or in parallel, and the starting sequence and the time delay thereof can be controlled by a digital delay generator; a fibre-optical probe receives laser, then the laser is transmitted to a grating spectrometer by the optical fibre, and the acquisition time of a plasma spectra reaching enhancement mode CCD is controlled by the digital delay generator. The laser probe machine stimulated by the double laser light sources has low detection limit, high element analysis precision and favourable element selectivity, is reliable and safe, and can be used for accurately determining the nature of microelements and trace elements of the micro-areas of various substances as well as carrying out accurate quantitative analysis.

The invention discloses a probe position linearization calibration method for on-machine laser measurement. The method comprises steps that, a measurement model of a laser probe moving along with a machine tool is established, a machine tool motion program is generated in an offline mode, the laser probe is driven by the machine tool to carry out multi-angle scanning of a standard ball for ball center fitting, a linear equation group of a standard ball center under multiple machine tool rotation angles and a probe mounting position relationship is acquired, probe mounting position parameters can be acquired through solving the equation group, that a calibration problem is expressed as a nonlinear optimization problem with constraint is not required, and problems of massive calculation and instability existing in nonlinear optimization solution can be avoided.

The invention relates to a laser probing and image identification based terrain tracking method for an unmanned helicopter, which belongs to the technical field of flight control of unmanned helicopters. The method is characterized in that a distance measurement sensor based on laser probing and image identification, an altimetric sensor and a flight control computer are provided, wherein the distance measurement sensor and the altimetric sensor are respectively used for measuring the distance D from the unmanned helicopter to a barrier and the terrain clearance H as well as a set distance Dc from the barrier and the terrain clearance Hc. The forward speed and the vertical speed (mainly the vertical speed) of the unmanned helicopter are adjusted by the flight control computer so that the unmanned helicopter maintains the set distance Dc from the barrier and the terrain clearance Hc unchanged approximately, thereby real-time tracking flight of the unmanned helicopter to complicated terrain is realized. In the invention, the unmanned helicopter can realize the terrain tracking function precisely, simply and reliably only by being provided with a few hardware devices.

An optical surgical probe, configured to optically couple to a light source; comprising a cannula; a light guide within the cannula, configured to receive a light beam from the light source, to guide the light beam to a distal end of the light guide, and to emit the light beam at the distal end of the light guide; and a multi-spot generator at a distal end of the cannula, the multi-spot generator having a faceted proximal surface with oblique facets, configured to receive the light beam emitted at the distal end of the light guide and to split the received light beam into multiple beam-components, and a distal surface through which the multiple beam-components exit the multi-spot generator, wherein the distal surface is micro-structured with a modulation length smaller than a wavelength of the light beam in order to reduce the reflectance of light back into the probe.

A microsurgical laser probe primarily used in ophthalmic surgery provides both laser light and illumination light to a surgical site from a single light source. The laser probe has a dual core optic fiber that transmits both laser light and illumination light to the surgical site. A center core of the optic fiber transmits the laser light through the optic fiber and emits the laser light at the surgical site. The center core of the fiber is surrounded by an outer fiber core. The outer fiber core has an interior bore that contains the center core optic fiber. The outer fiber core transmits illumination light through the optic fiber and emits the illumination light at the surgical site.

A surgical laser system (100) includes a first laser source (140A), a second laser source (140B), a beam combiner (142) and a laser probe (108). The first laser source is configured to output a first laser pulse train (144, 104A) comprising first laser pulses (146). The second laser source is configured to output a second laser pulse train (148, 104B) comprising second laser pulses (150). The beam combiner is configured to combine the first and second laser pulse trains and output a combined laser pulse train (152, 104) comprising the first and second laser pulses. The laser probe is optically coupled to an output of the beam combiner and is configured to discharge the combined laser pulse train.

A system for probing a DUT is disclosed, the system having a pulsed laser source, a CW laser source, beam optics designed to point a reference beam and a probing beam at the same location on the DUT, optical detectors for detecting the reflected reference and probing beams, and a collection electronics. The beam optics is a common-path polarization differential probing (PDP) optics. The common-path PDP optics divides the incident laser beam into two beams of orthogonal polarization - one beam simulating a reference beam while the other simulating a probing beam. Both reference and probing beams are pointed to the same location on the DUT. Due to the intrinsic asymmetry of a CMOS transistor, the interaction of the reference and probing beams with the DUT result in different phase modulation in each beam. This difference can be investigated to study the response of the DUT to the stimulus signal.

A laser probe includes an emitting optical fiber, optics, and two or more receiving optical fibers. The emitting optical fiber emits a beam of laser light. The optics diffract the beam of light emitted by the emitting optical fiber. The receiving optical fibers each receive a beam of light diffracted by the optics.

The invention relates to the technical field of photoelectric detection, and relates to a pipeline inner wall morphology and center axis straightness measuring device and method which can measure the pipeline inner wall 3D morphology and the center axis straightness simultaneously, output and display a result and acquire accurate pipeline inner wall morphology data, thereby accurately restoring the pipeline inner wall morphology, and improving the measurement accuracy of the pipeline inner wall morphology and the center axis straightness. The pipeline inner wall morphology and center axis straightness measuring device and method provided by the invention are implemented by the aid of a pre-conditioning device, a laser scanning module, a position and posture detection module and a driving module, wherein the laser scanning module and the position and posture detection module are in rigid connection, the relative positions are determined, a moderate expansion device is arranged, the two modules form a system detection device which is driven by a crawler to crawl continuously in a contact manner along the pipeline inner wall, and the laser scanning module is composed of a laser probe and a rotating motor; the position and posture detection module is composed of a pipe mouth laser group, a posture detector group and a stay wire displacement sensor; and the driving module comprises a crawler. The pipeline inner wall morphology and center axis straightness measuring device and method mainly applied to occasions of pipeline photoelectric detection.