Products

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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Projection Exposure System

The UX4-LEDs projection exposure system from USHIO America, Inc. (Cypress, CA) is for manufacturing LED chips. The system allows full-field exposure of 6-inch wafers while preventing wafer warpage or distortion — achieving a throughput enhancement of 300% compared with conventional stepper systems. It requires neither mask replacement nor cleaning that would cause system downtime, and allows enhancement of detection accuracy of alignment marks with low visibility, such as those for transparent electrodes, to achieve high overlay accuracy. A modular structure for major system components allows easy specification changes or upgrading and easy maintenance.

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Green Aluminate and Red Nitride Materials

Intematix (Fremont, CA) has introduced two LED phosphor families: green aluminate and red nitride materials that enable high-quality white illumination when applied to blue LEDs. The phosphor families meet the material requirements for display backlighting and general lighting applications by offering an improved color spectrum and excellent color rendering to LED lamps. Intematix applied its proprietary accelerated materials discovery and development process, C-MAT Synthesis™, to develop the green aluminate and red nitride phosphors.

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LED Driver ICs

Power Integrations (San Jose, CA) offers seven new members of its LinkSwitch-PH family of LED driver ICs. Optimized for industrial and commercial settings where high efficiency and system longevity are dominant requirements, the new devices (LNK413-LNK419) are suitable for lighting applications ranging from 3 W bulbs to 55 W replacements for fluorescent lighting fixtures.

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Multiplexer

Bitwise Systems (Goleta, CA) has announced their new Model QMUX16X2 Multiplexer designed to permit test and measuring equipment to connect to many signals. QMUX can measure two selected signals at the same time. The multiplexer features 16 inputs and 2 outputs and can be powered and controlled by a single, full-speed USB 2.0 compliant port. The multiplexer uses low-power reed relays and a USB controller in a DIN rail mount enclosure. It is suited to single or differential signals less than 10 MHz. Because the QuickMux uses mechanical reed relays, you can use it as a de-multiplexer as well as a multiplexer. The de-multiplexing capabilities of the QMUX16X2 permits two input channels and can be connected to any of the sixteen output channels on a standard 40-pin IDC header.

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