Laser encoder features picometer resolution
Hoffman Estates, IL—RLE20 fiberoptic laser encoder system from Renishaw converts a laser interferometer from a complex scientific instrument into a simple production device that offers picometer resolution, differential measurements, and part-per-billion laser frequency stability.
Hoffman Estates, IL —RLE20 fiberoptic laser encoder system from Renishaw converts a laser interferometer from a complex scientific instrument into a simple production device that offers picometer resolution, differential measurements, and part-per-billion laser frequency stability. Fiberoptic capability delivers laser light directly to the measurement axes, eliminating the need for multiple remote beam splitters, benders, and adjustable mounts. The encoder is intended for X-Y positioning systems.
Fiberoptic laser encoder from Renishaw offers picometer resolution, differential measurement, and part-per-billion laser frequency stability.
The system and associated components reportedly provide sub-nanometer nonlinearity and resolution capability of 38 picometers, and are said to give precision motion system manufacturers and semiconductor equipment OEMs a fiberoptic answer to ever-tightening requirements for wafer inspection, lithography, and other yield enhancement tools. Laser unit is connected to a detector head by a 3-m fiberoptic cable. Only two components need to be aligned to form a complex axis positioning system, cutting installation time and reducing equipment footprint.
Digital output signals provide resolutions of up to 10 nm; analog signals can be used in conjunction with Renishaw's RGE interpolators or a new RP120 parallel interface to provide resolutions of 0.39 nm and 40 picometers, respectively. The interface interpolates sinusoidal inputs by a factor of 4,096 and produces 36-bit parallel position output data. Easily integrated into bus-based architectures, each RP120 board contains a switch pack, allowing the interface to be allocated a unique address and multi-axis systems to be configured with up to seven axes.
— Control Engineering Daily News Desk
Jeanine Katzel , senior editor
Case Study Database
Get more exposure for your case study by uploading it to the Plant Engineering case study database, where end-users can identify relevant solutions and explore what the experts are doing to effectively implement a variety of technology and productivity related projects.
These case studies provide examples of how knowledgeable solution providers have used technology, processes and people to create effective and successful implementations in real-world situations. Case studies can be completed by filling out a simple online form where you can outline the project title, abstract, and full story in 1500 words or less; upload photos, videos and a logo.
Click here to visit the Case Study Database and upload your case study.
Annual Salary Survey
In a year when manufacturing continued to lead the economic rebound, it makes sense that plant manager bonuses rebounded. Plant Engineering’s annual Salary Survey shows both wages and bonuses rose in 2012 after a retreat the year before.
Average salary across all job titles for plant floor management rose 3.5% to $95,446, and bonus compensation jumped to $15,162, a 4.2% increase from the 2010 level and double the 2011 total, which showed a sharp drop in bonus.