Product category:
Machine Building Components
News Release from: Burrhart Machinery | Subject: Duralens laser optics
Edited by the Engineeringtalk Editorial
Team on 28 November 2003
Laser optics improve machine performance
Ophir Optronics of Jerusalem has appointed Luton-based Burrhart Machinery as agent in the UK and Ireland for its extensive range of carbon dioxide laser optics.
Ophir Optronics of Jerusalem has appointed Luton-based Burrhart Machinery as agent in the UK and Ireland for its extensive range of carbon dioxide laser optics Marketed under the Duralens brand name, the products are supplied to OEMs as well as to the replacement market
This article was originally published on Engineeringtalk on 9 Jan 2004 at 8.00am (UK)
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Nozzles optimise gas consumption
Consumables for high power CO2 laser profilers and plasma cutting machines have been introduced by Burrhart Machinery, Luton, under an agency agreement with the Italian manufacturer, Esse A.
Lenses, nozzles and ceramics improve edge finish
When Rolled Alloys switched to Ophir lenses, nozzles and ceramics supplied exclusively by Burrhart Machinery, the improvement in edge finish was immediate.
They comprise planoconvex and meniscus lenses, silicon and copper mirrors, and cavity optics, all designed to ensure that industrial and medical lasers operate at maximum efficiency.
Planoconvex lenses are best suited to high power cutting and welding of metal, wood, ceramic, plastic and composites where cost of production is more important than accuracy.
When profiling steels and thicker materials, this type of lens provides a larger kerf, allowing more oxygen into the cut to assist the production process.
Moreover, the lenses have the greater depth of field needed to maintain a straight edge.
Meniscus lenses, on the other hand, produce a beam of smaller diameter, reducing spherical aberration and allowing more precise cutting and marking.
The smaller spot size delivers the same power into a more concentrated area, increasing cutting speed by up to 5%.
Total reflector mirrors are used outside the laser cavity to turn the beam, or as corner mirrors.
Zero-phase-shift mirrors maintain polarisation of the laser beam to ensure an even cut.
90-degree phase retarder mirrors are designed for precision profiling, as they eliminate the slightly ragged edge normally associated with laser cutting.
Duralens cavity optics comprise rear mirrors, windows and output couplers.
Copper mirrors can be silver coated for enhanced reflectivity, guaranteed better than 99.8%.
Off-the-shelf and bespoke optics are available from Ophir.
In-house facilities for diamond turning, micropolishing and thin-film antireflective coating allow close control over optical characteristics to achieve high transmission or reflection with low scattering and absorption.
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