Abstract: Pattern transfer printing (PTP) systems and methods are provided to improve the quality, accuracy and throughput of pattern transfer printing. PTP systems comprise a tape handling unit for handling a tape with pattern transfer sheets sections and for controllably delivering the pattern transfer sheets one-by-one for paste filling and consecutively for pattern transfer, with the tape moving from an unwinder roll to a re-winding roll. PTP systems further comprise a paste filling unit which enables continuous paste filling using a supporting counter roll opposite to the paste filling head, a wafer handling unit controllably delivering wafers for the pattern transfer in a parallelized manner that increases throughput, a paste transfer unit with enhanced accuracy and efficiency due to exact monitoring and wafer alignment, as well as a print quality control unit.

Abstract: A handheld laser-based vehicle speed measurement device incorporating on-board data storage with GPS, compass, excess panning detection, and voice recognition technology, as well as, recording minimum and maximum speeds of a plurality of vehicles along a roadway and calculating the 85th percentile speed.

Abstract: Pattern transfer sheets and methods are provided for printing paste patterns (e.g., thin fingers) with a high aspect ratio and for increasing throughput in pattern transfer printing. Trenches in the pattern transfer sheets, that are configured to be filled with printing paste and to enable releasing the printing paste from the trenches onto a receiving substrate upon illumination by a laser beam—are coated internally by a coating configured to disintegrate upon the illumination. The coating is configured to enhance the releasing of the paste—increasing throughput and printing accuracy. The receiving substrate may be cleaned after paste deposition by removing disintegration products of the coating therefrom. Alternatively or complementarily, laser absorbing dye may be mixed into the printing paste to facilitate its release from the trenches.

Abstract: Dynamic pattern transfer printing systems and method are provided, which decouple the design of the trench patterns on a source substrate for pattern transfer printing, from the resulting metallic paste lines patterns transferred to a receiving substrate, such as PV cells. The receiving substrate may be moved forward (along the scanning direction of the laser illumination used to transfer the paste from the trenches onto the receiving substrate) to reduce the pattern pitch with respect to the source substrate, and/or the receiving substrate may be moved backward (against the scanning direction) to increase the pattern pitch with respect to the source substrate. For example, dynamic pattern transfer printing may be used to accommodate different widths of the substrates for more effective pattern transfer, and/or to enable one-to-many pattern transfer technologies with high wafer throughput. Also, pattern transfer sheet with separate multiple groups of trenches are provided.

Abstract: Pattern transfer sheets, methods of monitoring pattern transfer printing, and pattern transfer printing systems are provided, for monitoring and adjusting laser illumination used for transferring paste patterns from trenches on the sheets onto a substrate such as electronic circuitry and/or solar cell substrates. Pattern transfer sheets comprise, outside the pattern, (i) trace mark(s) configured to receive the printing paste, aligned to the trenches and are wider than the width of the illuminating laser beam—to detect misalignment of paste release from within the trace mark(s) and/or (ii) working window marks configured to receive the printing paste, set at specified offsets with respect to specific trenches, with different working window marks set at different offsets—to correct the effective working window by adjusting the power of the laser beam.

Abstract: An optical baffle and combination with a laser sensor of especial applicability in attenuating off-axis laser light in the use of a laser sensor for determining the height of a liquid level or distance to a surface detectable through a pipe.

Abstract: An optical path test system includes a return light test unit for emitting laser light to an optical path monitoring unit to simulate return light received by the optical path monitoring unit in a normal operation; a light path monitoring unit arranged on a light path of the return light testing unit for receiving the return light and normally emitting laser light; and a power detector for receiving the laser light emitted by the light path monitoring unit so as to monitor stability of output power of the chip when the light path monitoring unit receives the return light emitted by the return light testing unit. The technical solution in the present invention emits laser light to a tested laser chip to simulate return light received by the tested laser chip in a normal operation, and a return light resistance threshold of the laser chip can be accurately evaluated.

Abstract: Disclosed herein is a handheld speed gun incorporating automatic number plate recognition (ANPR) functionality. As the image size of a vehicle license plate varies depending on its distance from the speed gun, in the present invention the distance to the target vehicle is known through the functionality of the laser sensor so the size of the pixels for the number plate can be estimated. Since the image of the number plate may be tilted in a handheld device, the present invention compensates for this by use of the instrument's tilt sensor or through other compensation by use of the image itself.

Abstract: A method for the laser-based machining of a sheet-like substrate, in order to separate the substrate into multiple portions, in which the laser beam of a laser for machining the substrate is directed onto the latter, is characterized in that, with an optical arrangement positioned in the path of rays of the laser, an extended laser beam focal line, seen along the direction of the beam, is formed on the beam output side of the optical arrangement from the laser beam directed onto the latter, the substrate being positioned in relation to the laser beam focal line such that an induced absorption is produced in the material of the substrate in the interior of the substrate along an extended portion, seen in the direction of the beam, of the laser beam focal line, such that a material modification takes place in the material of the substrate along this extended portion.

Abstract: A laser-based rangefinding instrument for, inter alia, golfing or hunting activities having an unique ergonomic design and an external multi-function switch for controlling display brightness, selectable display of differing distance units and a slope selection switch for enabling display of line of sight distance or angle of slope and “Compensated Golf Distance” slope distance to a target.

Abstract: Systems and techniques for facilitating archery implemented in conjunction with a bow mountable laser-based speed measurement instrument or a speed sensor bar as well as a bow movement sensor system which may be affixed to any of the available mounting positions on a conventional bow.

Abstract: A laser-based rangefinding instrument for, inter alia, golfing or hunting activities having an unique ergonomic design and an external multi-function switch for controlling display brightness, selectable display of differing distance units and a slope selection switch for enabling display of line of sight distance or angle of slope and “Compensated Golf Distance” angle corrected distance to a target.

Abstract: A laser 3D printing method with orthopedic function, comprising the following steps: step one, measuring a projection characteristic of each spot within a scanning plane, to obtain a deformation quantity of a focused light spot at the each spot within the scanning plane before rectifying; step two, setting compensation quantities of the each spot within the scanning plane of a light spot orthopedic device according to the measuring result of the step one, so that the size of the focused light spot at the each spot within the scanning plane is consistent; step three, turning on the laser, and dynamically matching the light spot orthopedic device and a scanning device to perform the laser 3D printing. The laser 3D printing method and system thereof with orthopedic function could ensure the size of the focused light spot is consistent within the scanning plane, thereby ensuring the quality of 3D printing.

Abstract: A through-the-lens, co-aligned aiming system for a phase-type, laser-based distance measuring device incorporating a co-aligned aiming system with an in-scope, view through LCD display.

Abstract: A method and apparatus for improving measurements of a laser beam in a laser imaging system. The method includes, positioning an apodizing filter having a transmission profile that approaches a maximum at its edges between a pixelated detector and a laser source. The method further includes, emitting a laser beam from the laser source onto the apodizing filter and transmitting a portion of the laser incident upon the apodizing filter to the pixelated detector in accordance with the transmission profile of the apodizing filter such that the signal-to-noise ratio of the portion of the laser incident upon the pixelated detector is improved. The apodizing filter may be selected from a linear apodizing filter, a radial apodizing filter and a prism apodizing filter.

Abstract: A surgical laser system can include a fluorescent sensing assembly for detecting fluorescent signal from a tissue under a surgical operation of the surgical laser system. The surgical laser system can include an aiming laser assembly, which can be configured to provide excitation energy for the fluorescent process. The surgical laser system can include an infrared sensing assembly, which can provide temperature related data, for example, to prevent damages to the tissue due to overheating. The surgical laser system can be configured to use the off-time of the surgical laser for tissue sensing. Data from tissue sensing can be further analyzed by an integrated robotic surgical system to provide a highly precise surgical procedure.

Abstract: A method and apparatus for reducing ghost images in a laser imaging system. The method includes, positioning an absorptive neutral density filter, having an optical density (OD) of at least ?1, between a pixelated detector and a laser source. The method further includes, emitting a laser beam, from the laser source onto the absorptive neutral density filter, transmitting a portion of the light incident upon a first surface of the absorptive neutral density filter to a second surface of the absorptive neutral density filter, reflecting a portion of light incident upon the second surface of the absorptive neutral density filter and absorbing the reflected portion of light, by the absorptive neutral density filter, to reduce ghost images at the pixelated detector.

Abstract: Disclosed herein is a handheld speed gun incorporating automatic number plate recognition (ANPR) functionality. As the image size of a vehicle license plate varies depending on its distance from the speed gun, in the present invention the distance to the target vehicle is known through the functionality of the laser sensor so the size of the pixels for the number plate can be estimated. Since the image of the number plate may be tilted in a handheld device, the present invention compensates for this by use of the instrument's tilt sensor or through other compensation by use of the image itself.

Abstract: A laser processing method for a sapphire includes: acquiring an image of the sapphire during processing; performing an edge detection to the image to acquire a coordinate of a crack; determining an offset parameter according to the coordinate of the crack; adjusting a laser processing position according to the offset parameter; and further processing the sapphire in accordance with the adjusted laser processing position.