JULIGHT VSM Series - Single fixed-point Laser Vibrometers

Description

• Non-contact vibrations measurement
• Smart Self-Mixing interferometric configuration
• Working distance: 0.1 m - 5.0 m (optional up to 50.0 m)
• Autofocus
• Works on all diffusive surfaces
• Frequency range: from DC to 100 kHz (optional up to 10 MHz)
• PC software for remote control

Technical data

Several models are available:
-In models with working distance from 0.1 m to 5 m, the
measuring laser has a wavelength of 1310 nm. This is an invisible infra-red wavelength, and the laser belongs to laser safety class 1, that is totally eye-safe. Aiming onto the target is made easier by a visible red laser pointer (of laser safety class 2), superposed to the invisible infra-red laser. In models that are equipped with an integrated laser telemeter, the latter also acts as visible pointer.
-In models with longer maximum operation distance (from 10 m to 50 m) the laser must have a long coherence length, to keep its coherence properties even after propagation over such long distances. For this, Julight uses state-of-the-art DFB lasers emitting at 780 nm, that are designed for spectroscopy applications, and belong to laser safety class 3B.
-The Underwater option (-UW) that makes use of a laser
wavelength (660 nm, or 780 nm) that is much less attenuated by water with respect to the standard wavelength of 1310 nm, and thus is suitable for applications where the laser beam travels through water, or where the target is submerged in water.
The -IP868 option is unique in the Laser Vibrometers market, as it allows the optical head to be submerged in water, down to 3 m depth.