positioning-equipment-whitepapers
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PI Mini Imaging Drives For Endoscopy
7/13/2016
With the aim to cause patients as little discomfort as possible, minimal invasive surgery (MIS) techniques use endoscopes integrated with a miniature drive to achieve variable focusing so that objects can be in sharp focus at all times. These endoscopes are used in larynx diagnostics or laparoscopy where optics and special instruments can then be introduced to the abdominal cavity through working trocars. Patients will then experience less post-operative pain and are able to be discharged earlier from the hospital. This application note describes the focus and zoom control functions within these miniature drives, and provides information on available PI piezo miniature drives for endoscopy applications.
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Optimizing Performance Of Galvanometer-Based Laser Beam Steering
4/6/2016
Closed-loop galvanometers, or galvos, offer a combination of speed, accuracy, low cost, and flexibility. To achieve optimal performance in any galvo application, one must understand the parameters for positioning speed and accuracy, plus proper design and selection of the galvo, mirror, and servo driver.
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From Patterned Wafer To Packaged Device: Optical Alignment For Packaging and Test In SiP
2/26/2015
As photonic and electronic devices began to converge, bandwidth, efficiency, and functionality improved significantly. On the flip side, testing and packaging these silicon photonic (SiP) devices has proven to be a challenge. Testing conventional microcircuits can be done through physical contact, conventional positioning control devices, and visual inspection. On the other hand, photonic devices require non-contact and nanoscale alignment between the hybrid device under test and a probe fiber or other element. And we haven’t even begun discussing the complications involved in packaging such devices.
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Piezo-Based Nanopositioning For Ophthalmology
4/2/2014
Several laser methods have emerged to influence the curvature of the cornea to correct visual acuity. All have one decisive factor in common: laser beam control and focusing that requires high-precision positioning. Piezo-based solutions are well suited to this application, providing the necessary precision, speed, and reliability, as well as compact designs that can be easily integrated into today's laser systems.
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Achieving Double-Sided Fiber Optic Alignment with the H-206 Hexapod Positioning System
11/8/2013
PI’s H-206 positioning system uses fast alignment algorithms, six-axis positioning, virtualized rotation and fast optical or analog metrology to achieve double-sided fiber optic alignment.
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Improved Automated Manufacturing of Opto-Mechanical Components
10/22/2013
Hexapod systems can be used to provide precision movement and positioning in the manufacturing process of opto-mechanical components. Often times though, this type of manufacturing process calls for precise motion in all six degrees of freedom.
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Resolution Enhancement of Imaging Chips with Piezo Technology
3/15/2013
Cameras and scanning systems used in applications involving fluorescence microscopy, white-light interferometry OCT, or aerial photography need to be high resolution. When resolution needs to be increased, there are only a few options
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Piezo Rotary Motor for Optical Instrumentation Tech Note
10/5/2011
A great many factors come into play when selecting a drive system for a portable precision instrument: The installation space available, the velocities, the accelerations and positional accuracy required, the energy consumption and the reliability of the motorization selected.
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White Paper: Setting PID Parameters And Notch Filters Using Black’s Diagram
10/5/2011
In the 1800's, automation began with the use of crude motors with belt and pulley drive trains.
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Not All Optical Mounts Are Created Equal
6/16/2010
With the wide variety of optical mounts available today, it’s more important than ever for researchers and engineers to understand how subtle differences in mount design impact performance and cost. There are increasingly more optical mounts provided to fit specific requirements of different applications as manufacturing and material technology advances. Users have many options and configurations from which to choose when determining the correct mount for the job. When selecting an optical mount, the important parameters to consider are adjustment range, resolution, repeatability, orthogonality of motion, stability, compactness, and thermal drift.