Products

Electic Motors

NovaTorque (Sunnyvale, CA) offers Premium Plus+ electric motors in 2 and 3 HP @ 1800 RPM as a motor system paired with a variable frequency drive, or as standalone motors. The 2-HP version has a full-load rated efficiency of 91.5% at 1800 RPM and is available in a 143T frame, and the 3-HP version has a full-load rated efficiency of 90.5% and is available in a 143T or 182T configuration. Foot and flange mountings are available. The motors are based on the company’s stator and rotor hub geometry. The laminated field poles used in the stator have conical end-surfaces instead of perpendicular flat cross-sections. The rotor hubs have conical shapes that match the end-surfaces of the field poles. The increased surface area at the rotor/stator interface concentrates the magnetic flux.

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Brushless Motor/Drives

Dunkermotoren USA (Elgin, IL) has introduced the BG75 series modular brushless permanent magnet motors driven by an integrated servo motor drive. The series is composed of 2.95" squared high-power-density motors in three stack lengths. The motor peak torque varies from 22.1 in-lb for the BG75×25, to 44.2 in-lb for the BG75x50, and up to 55.7 in-lb for the largest model, the BG75×75. Axial lengths are 4.53", 5.51", and 6.5", respectively. The modular construction of the series is available with integral electronic drive and precision position encoder with 4,096 counts. The power electronics provide a range of input voltages from 10 to 50VDC, and deliver up to 50A peak. Available communication protocols are CANopen and Profibus.

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All-In-One Green Q-Switched DPSS Laser

Spectra-Physics® (Santa Clara, CA) has announced the world’s first 5 Watt, all-inone green Q-switched diode-pumped solid-state (DPSS) laser that combines the laser head and electronics into a single, compact package. The Explorer® XP 532-5 laser operates across a wide repetition rate range from single shot up to 300 kHz, and features the industry’s smallest footprint with air-cooled design, offering thermal management of less than 100W under normal operating conditions. Superior beam quality results in improved spatial resolution and depth of focus, translating into wider process windows.

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Hexagonal LED Chip

The Honeycomb™ LED Chip from Verticle, Inc. (Dublin, CA) is a vertically-structured LED chip developed for high-power LED applications. A wafer can yield 15% more hexagonal chips than square or rectangular chips of equivalent size. Hexagonal chips also aid in the current spreading, with the resulting higher light output than conventional chips. Another advantage is the light output enhancement after packaging. The Honeycomb chip produces a beam profile which is much closer to the circular shape of circular lens used in optic design. The beam profile of a typical square or rectangular chip, when combined with circular lens, is normally distorted.

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6-inch GaN Substrates

Sumitomo Electric Industries, Ltd. (Osaka, Japan) has developed 6-inch diameter GaN (gallium nitride) substrates to be used for white LEDs. The front face of the GaN substrates is a polarized c-plane. Polarity refers to a change in the electrical characteristics of a crystal caused by the preferred orientation of the constituent elements, and c-plane is a crystal face of a GaN substrate generally used for white LEDs and blue-violet or blue lasers. With positively-charged Ga and negatively-charged N oriented alternately, c-plane exhibits a strong polarization. This polarization decreases light-emitting efficiency in the green region. The GaN substrates have excellent thermal conductivity.

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Sapphire Crystal Grower

The K1 Kyropoulos Crystal Grower from Thermal Technology (Santa Rosa, CA) is suitable for LED substrate production. The 90 kg crystal grower features multiple, independently-controlled heating elements, weight sensors to determine the crystal's growth rate, and computerized control and data logging. Sapphire crystals have multiple high technology applications, most dominantly as substrate wafers for high brightness blue and white LEDs. With its short cycle time, the K1 Kyropoulos Crystal Grower is highly productive.

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10-inch Sapphire Substrates

Monocrystal (Stavropol, Russia) has introduced ultra-large 10-inch c-plane epi-ready sapphire substrates. The LED industry continues shifting to larger diameter substrates as it strives to achieve higher cost savings and to increase production throughput of quality LED chips. Sapphire substrates are used for more than 90% of GaN LED chips produced by the industry, including high-brightness devices used for LED lighting products.

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