OFV-55x Fiber-Optic Sensor Head

OFV-551 fiber sensor head

Fiber optic vibrometer systems allow the user to target the measurement laser beam with a flexible cable. Fiber interferometers are most often used to measure small parts, where physical access is difficult, small stand-off-distances are required, or where relative motion between two points needs to be measured.

Designed for Sophisticated Measurements

Fiber optic vibrometers simplify vibration measurement where physical access is difficult, close stand-off distances are required, or where relative motions between two points needs to be measured. The sensor heads utilize flexible fiber optics and an output lens to deliver the laser probe to the measurement point and to collect the reflected light as an input to the interferometer. This design allows for fiber-optic cables with diameters as small as 5 mm and lenses that focus the laser down to a 3 µm diameter spot. 
The flexibility and small size of the cable enables measurements in hard-to-reach and space-limited areas.
Polytec’s fiber optic vibrometers are widely used in the electronics industry for measurements on circuit boards, bonding wires, mobile phones and hard disc drive components. Other applications are found in micro structures, medicine, zoology and automotive manufacturing.
A special, dual-fiber design (OFV-552) permits the direct measurement of differential movement between  two points. 

OFV-552 fiber sensor head differential