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Laser Beam Shutter

Photonics.com
Jun 2010
Lasermet Ltd.Request Info
 
BOURNEMOUTH, England, June 22, 2010 — The LS-20 laser safety shutter is the latest addition to the family of products from Lasermet Ltd. It enhances the company’s range of integrated laser safety systems that are designed to provide safe operation at all times.

It features a gravity-close blade and force-disconnect proving contacts. When open, it allows the laser beam to pass through without interruption, but, when closed, it deflects the incoming laser beam away safely onto an internal beam dump.

The standard version, fitted with a stainless steel blade, can be used for average laser beam powers up to 20 W. For use at higher powers up to multikilowatt levels, a dielectric mirror is used on the blade and an external beam dump is fitted.

When used in combination with proprietary interlock control systems, the shutter LS-20SIL provides a safety interlock which meets Safety Integrity Level (SIL) 3 to EN61508. This SIL3-rated version features dual channel shutters with blade position monitoring fed back to the safety control system, enabling fail-safe redundancy and detection of any failures, resulting in a high-integrity safety system.

LS-20 shutters may be operated either manually by the “open” and “close” buttons on the shutter case itself or remotely by the company’s LS-RS20 remote switching station.

For laser beam power measurements, the beam dump can be removed and the detector head of a laser power meter can be fitted instead.

The shutter measures 98 × 65 × 37 mm and is suitable for use with laser beam diameters up to 15 mm. An anti-rotation slot is provided in the base of the shutter to prevent it from accidentally turning or becoming unscrewed.


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