; Pulse Modulator An all-solid-state high-power pulse modulator for re- search and small-production applications is available from Diversified Technologies Inc. The PowerMod pulse modulator delivers up to 10 MW of peak pulses at volt- ages from 1 to 50 kV, with currents from 1 to 150 A. Easy to operate and capable of running short microsec- ond pulses at 10 KHz to full DC, it uses solid-state switch modules that are readily configured by the company to meet specific customer requirements. It provides full internal self-protection against overvoltage and overcur- rent conditions, and it exhibits ;1-µs rise and fall times into a resistive load, a 1- to 100-µs nominal pulse width and up to 30-kHz nominal pulse frequency, depending upon the power level. Diversified Technologies Inc. email@example.com
Absolute Encoder ;
Avago Technologies has unveiled a high-resolution absolute
optical encoder for high-performance servo and motor
feedback applications. The AEAT-9000 ultraprecision absolute encoder provides high accuracy for smooth motor
drive performance. It is available in a modular package
that enables it to be mounted in space-constrained locations with various mounting requirements. The single-turn
encoder offers up to 17-bit resolution for precise angle
measurement over a full rotation of 360°. The modular design
consists of a read head and a code disk. Unlike conventional encoders, it can be directly integrated
on the motor. Leveraging differential internal and external signal paths, the absolute encoder
delivers good noise cancellation for robust system noise immunity in industrial environments.
Fizeau Interferometer ;
The AccuFiz Fizeau, a compact interferometer
manufactured by 4D Technology Corp., offers
accuracy, quality and value for surface shape
and transmitted wavefront quality measurements of optical components and systems.
It provides accuracy at midspatial frequencies,
enabling optics manufacturers to measure
polishing artifacts that other interferometers
miss. Features include a touch-screen remote,
fully motorized controls and tool-free height
adjustment. The Smart Zoom ensures repeatable lateral resolution at all zoom settings.
Included 4Sight wavefront analysis software
features an intuitive interface and ease of use.
The AccuFiz product line includes laser sources,
aperture sizes, mounting configurations and
accessories for a variety of applications.
Optional dynamic interferometry capability
enables users to measure without an air table,
despite vibration and air turbulence.
4D Technology Corp.
Achromats and Doublets
Bern Optics Inc. has announced submillimeter
achromatic lenses with 0.20-mm diameters for use
in precision medical and analytical devices. The most
common type of achromat, the doublet, is a compound
lens consisting of two elements cemented together.
These precision microminiature optical components
can be custom-engineered, ground and polished to
micron tolerances. They are suitable for use in applications including endoscopes and other medical devices.
Besides careful grinding and polishing of the complex
lenses, the company’s quality control regimen verifies
the centration of each element before and after cementing. The lenses can be produced with or
without specialized coatings to meet the specific application requirements.
Bern Optics Inc.
Machine Vision Software ; Cognex Corp. has added 3-D vision to its VisionPro software for machine vision applications. VisionPro 3-D delivers accurate, real-time 3-D position information to automate assembly verifi- cation, logistics and robot applications. Based on proprietary PatMax and other alignment technologies, it works with fixed or robot-mounted cameras. The software is integrated with the xisting VisionPro library, providing users with access to a variety of identification and inspection tools. It uses multiple sets of 2-D features found in the company’s alignment tools, including PatMax, PatFlex and other geometric pattern matching tools that olerate nonuniform lighting and remain reliable even when patterns are partly covered. This ensures accurate part location under challenging conditions. The software continues to perform even if some part features are not visible. Cognex Corp. firstname.lastname@example.org
Polarization Imaging ;
Bossa Nova Technologies LLC has released a
full Stokes polarization imaging camera. The
Salsa performs live measurement of the full
Stokes vector, including the fourth parameter
S3, related to circular polarization. Dedicated
software provides live images of any derived
parameters, such as the degrees of linear and
circular polarization, the angle of polarization
and the ellipticity angle. In-house calibration
enables accurate polarization measurements
below 1% rms deviation. Measuring 3.2 ; 3.2
; 4 in., the robust camera features a 1-mega-
pixel, 12-bit CCD sensor, standard C-mount
lenses and a proprietary fast polarization modulator. The camera operates at up to 12 fps in
polarization imaging mode and is suitable for
use in applications such as biomedical imaging,
remote sensing, metrology and materials studies.
Bossa Nova Technologies LLC