Laser marking system
The ELM-700A laser marking system from Eunil H.A. Americas Inc. (San Diego, CA; www.eunil.com) enables barcodes, product model numbers, logos, company names, and serial number data to be beamed onto products. Operated by PC control, the system features an aluminum frame with painted vanity panels and a transparent cover. The system offers features such as the ability to handle PCBs from 50 x 50 mm to 430 x 350 mm, ability to handle PCBs with thicknesses ranging from 0.5 to 2.0 mm, and auto-width adjust.
Laser cavity optics
Laser Research Optics (Providence, RI; www.laserresearch.net) set forth a line of precision cavity optics for CO2 lasers, designed to optimize the transmission of energy through the delivery systems to the workpiece. Inclusive in the line are output couplers, or front mirrors, which are made from ZnSe. Providing 60-65 percent reflectivity, they reflect a percentage of the laser beam back into the resonator for continuous amplification while transmitting energy through the delivery system. End reflectors, or rear mirrors, are typically made from Ge with 99-99.5 percent reflectivity. This is to reflect nearly all of the laser energy back through the gas mixture. Both front and rear mirrors are available in sizes from 0.5-inch to 2-inch diameter.
The VectorMark compact 6 (VMc6) and the VectorMark compact 5 (VMc5) from TRUMPF (Farmington, CT; www.us.trumpf.com) are adept at making precision marks on plastic. The VMc5 is used to accurately mark plastics. For high-quality marking, pigments or additives can be used. Optional for the VMc5, is a feature known as “marking on the fly,” which enables a continuous workflow by marking moving parts. Similar to the VMc5, the VMc6 was also developed to laser mark plastics. However, the benefit to the VMc6 is that markings can be made with no additives in the existing plastic. The photon energy of this laser is so high that the molecular bonds of many synthetic materials can be broken directly. The VMc6 can produce high contrast marks without burning, engraving, or damaging the surface of any plastic material.
J P Sercel Associates (Hollis, NH; www.jpsalaser.com), introduces the new IX200 ChromaDice series of laser systems, available in both diode-pumped solid-state and excimer ultraviolet laser configurations. The IX200 ChromaDice DPSS version is a high-precision wafer dicing system suitable for wafer trimming and scribing. The ultraviolet version delivers high-speed wafer dicing and cutting, and is tolerant of wafer warp and bow suitable for all wafer types. The IX200 system is also available in an excimer laser version for drilling, micromachining, and thin-film patterning. The IX200 ChromaDice is available in 266nm or 355nm UV DPSS laser wavelengths for a wide range of process capabilities.
Pulse tune lasers
New from SPI Lasers (Southampton, UK; www.spioptics.com), a configuration marking laser with “Pulse Tune” technology has been developed. The laser’s ability to enable user selected pulsewidths and repetition rates in set stages between 10-200ns/1kHz-500Hz coupled to single pulse and full CW running modes has allowed this product to laser mark more efficiently. This company sells pulsed and CW marking lasers and CW modulated micromachining lasers up to 200W at 1090nm as well as fiber lasers at 1550nm.
The “side draft” filter wall has been introduced by Industrial Maid LLC (Cortland, NE; www.industrial-maid.com), and is intended to be used on robotic and automated welding cells. The system is mounted on a forklift slip with access from front, back, and both sides. In addition the units have a three-stage filter configuration consisting of 2-inch spark baffles, 4-inch pleated pre-filters, and 10-pocket 95 percent 120-square-feet media bags. The filters can handle oily smoke applications as well as dust and grinding grit produced in manufacturing finishing operations.
Providing ultra-precise angular position, rate, and acceleration for development and production testing of a wide range of systems, the AMG LP series from Aerotech Inc. (Pittsburgh, PA; www.aerotech.com) introduces the Low-Profile Position and Rate Gimbals. These products use direct-drive motors for smooth, high-performance motion, and direct optics, lasers, antennas, and sensors at high speeds to precise pointing angles. Loads up to 200 mm in diameter can be accommodated.
New from PARAgon Laser Systems (St. Joseph, MO; www.paragonlasersystems.com), the Micro-Marker marks most metals, some rubbers, plastics, composites, and ceramics depending on the composition. This fully self-contained tabletop model is available with field sizes of 2 inches, 4 inches, and 6 inches, and either 10- or 20-watt standard machines are available. Up to 100W diode-pumped fiber laser units are available for custom applications.
LPKF Laser & Electronics North America (Wilsonville, OR; www.lpkfusa.com) recently introduced MicroCut for stencil fabrication. This burr-free cutting uses a new cutting technology that eliminates thermal effects on materials. The MicroCut contains the Turbo Cut, a specially developed beam deflection system to move the laser beam over the work surface. The MicroCut also produces stencils with up to several hundred thousand apertures, with opening as small as 50 µm (2.0 mil) and at rates as high as 50,000 apertures per hour. This high throughput results in an increase of stencil cutting productivity, precision, and flexibility.
Metal cutting system
The LMEXtreme metal cutting system from LaserCut Inc. (Brandford, CT; www.lasercutinc.com) features the thermo-mechanical stability of the El.En. laser resonator, which allows use in the most extreme industrial conditions. A linear motor is used for optimal speed, and the working area consists of 3030 mm x 1530 mm. The LMEXtreme also contains a motorized auto-focus digital system and a Hypertherm head with capacitive sensors for high-speed cutting.
Board trimming system
New from Control Systemation Inc. (Orlando, FL; www.controlsystemation.com), the BOARDmaster uses laser technology to separate populated circuit boards without damaging edge mount components. This product incorporates “Green” lasers, inline SMEMA-compliant conveyance, and a vision system for process shifting. There is little tool wear, a modular design, easy operation, and no component damage, inclusive of this product.
Alfalight Inc. (Madison, WI; www.alfalight.com) introduces the Wavelength Stabilized Technology (WST) diode lasers. These lasers do no require any cooling or external components to maintain wavelength, which in turn reduces their energy consumption. The diodes are available fiber-coupled with 2.0 watts in a 6-pin uncooled package with 105µm/0.15NA fiber, or with 2.5 watts in chip-on-carrier packages. No additional components or subassemblies are required, due to the direct integration of the wavelength stabilization technology onto the semiconductor chip itself. Because the units are physically identical to their counterparts there is virtually no need for any special handling in the manufacturing process.