Features

Motor & Driver Package

The CRK series from Oriental Motor USA Corp (Torrance, CA) combines a five-phase stepping motor with a compact, low-vibration microstepping driver. In microstep operating mode, the driver provides 25 preset angle selections up to a capability of 250 microsteps per full step. The basic angle can be adjusted to match a two-phase stepping motor's step angle. The series is available in four frame sizes: 20 mm, 28 mm, 42 mm, and 60 mm. Motors are available with step motor holding torques ranging from 3.2 oz-in to 230 oz-in.

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Translation/Rotation Stage

PI L.P. (Auburn, MA) has released the M-110 series translation stages that provide linear motion of 5, 15, and 25 mm. Available are X, XY, and XYZ systems, which can be combined with the M-116 miniature rotary stage. The systems can be equipped with high-speed piezo drives. Features include 50-nm true minimum incremental motion, choice of lead screw drives and ball screw drives, and integrated Hall effect limit and reference switches. A choice of closed-loop DC motors and stepper motors is available. The encoder on the DC servo motor version features 0.007 micrometer resolutions per count. One- to four-axis systems are available.

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Ball Bearings

MRC Bearings Services (Kulpsville, PA) offers the R Series inch-sized stainless ball bearings for small shaft diameters. The single-row, deep-groove radial conrad-type bearings carry radial and thrust loads in either direction at high speeds. Bore sizes range from 1/8 to 1 ½", and open, shielded, and sealed bearings are available. Basic radial dynamic load ratings range from 70 lbf to 3,780 lbf and basic radial static load ratings range from 27 lbf to 2,650 lbf, depending on type. The bearings are supplied with pressed steel cages. Two-piece riveted machined phenolic or bronze cages are available.

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Motorized Stages

Prior Scientific (Rockland, MA) has added patent-pending Intelligent Scanning Technology (IST) to its Prior ProScan™ II H101A, H107, and H117, 4 × 3" scanning stages. IST allows each stage to be pre-programmed with a unique set of operating characteristics to that particular stage. The technology also allows the controller to periodically interrogate the stage and make adjustments to maintain orthogonality and metric accuracy.

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Distributed Intelligence Drives High-Energy Laser Manufacturing

Historically, high-energy (Joule-class) nanosecond YAG lasers have been confined primarily to laboratory research facilities and government labs. System designs were unique for each facility and the low number of systems worldwide made the learning curve for system improvement slow. It is only in recent years that the maturity of the technology has reached a state that makes it possible to consider these lasers for industrial applications.

Posted in: Features, ptb catchall, Photonics, Articles

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DFM Your Device? Simulation Is the Answer

Design for Manufacturing (DFM) has taken off like a rocket in the electronics industry in recent years. Performing process and device simulations on CMOS transistors in a DFM flow have proven to be important in shortening the design cycle and reducing the production cost by improving yield. These are the key elements to why DFM mans the gate to the success of semiconductor foundries and companies.

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HBLEDs: Tackle Your Silicone Packaging Problems

It is widely known that the light emitting diode (LED) R&D and commercialization community is striving to produce higher power, bright-white-light LEDs. From both a temperature and UV-resistance standpoint, silicone is rapidly becoming the material of choice for the next-generation chip encapsulant. But as LED manufacturers look to employ silicones in their manufacturing processes, they must be aware of potential problems. Cure inhibition can lead to unacceptable variations in the manufacturing process and thus, the finished product. This article takes a brief look at the benefits of using silicones in high-brightness LED (HBLED) applications, with a focus on potential production floor issues and their solutions.

Posted in: Features, ptb catchall, Photonics, Articles

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