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Data sheet: RLD10 DI (differential interferometer) detector head

Data sheet: RLD10 DI (differential interferometer) detector head
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Data sheet: RLD10 DI (differential interferometer) detector head - 1

RLD10 DI (differential interferometer) detector head The Renishaw RLE fibre optic laser encoder uses interferometry to provide high resolution, high linearity position feedback. The RLE system comprises an RLU laser unit and one or two RLD detector heads. The RLU laser unit contains the laser source and signal processing electronics. It is available with one or two fibre optic laser outputs that deliver laser light directly to the RLD detector heads. The detector head is the core of the optical measuring system containing the interferometer optics, novel Renishaw detection scheme and beam steering mechanisms. This data sheet describes the RLD10-X3-DI differential interferometer detector head, which measures the relative displacement between two plane mirror targets including one fixed-position reference mirror. This ensures accurate positioning between critical process components and eliminates common mode errors. General outline and dimensions In vacuum chamber applications, the detector head is mounted on the outside of the chamber with the laser beams entering through a suitably positioned viewport. To enable laser alignment to be completed from outside the chamber, this RLD head includes individual pitch and yaw adjusters for both the reference and measurement beams. Both the fibre optic and electrical cables can be disconnected from the detector unit, further simplifying integration. The detector head incorporates a safety interlock that prevents a laser beam being emitted if either the fibre or electrical cable are disconnected. 20 (0.79) Legislative - Laser safety: In accordance with IEC/EN60825-1, IEC/EN60825-2 and US standards 21CFR 1040 and ANSI Z136.1, Renishaw RLE lasers are Class II lasers and safety goggles are not required, since the blink reaction of a human will protect the eye from damage. Do not stare into the beam or shine it into the eyes of others. It is safe to view a diffuse-reflected beam. Do not dismantle the unit in any way; doing so may expose laser radiation in excess of Class II limits. The RLE range offers a variety of laser units and detector heads to suit specific application requirements - all system components are compatible with each other.

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Data sheet: RLD10 DI (differential interferometer) detector head - 2

New Mills, Wotton-under-Edge Gloucestershire GL12 8JR United Kingdom RLD10-X3-DI detector head performance Axis travel Optical signal period System non-linearity error (SDE)* *excludes interface Thermal drift coefficient Beam diameter Beam separation Beam alignment adjustment Integrated beam steering to simplify beam alignment Plane mirror alignment tolerance (1 m axis) Cable length (standard) Detachable at the laser unit and detector head Electrical cable diameter Terminated with a 15-way D-type connector and 15-way high density D-type at the other end Fibre cable diameter (armoured)...

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