Region

OFV-SR/OFV-MR/OFV-LR/OFV-SLR Front Lens

By using different front lenses with the single-point sensor head the vibrometer is optimally adapted to different stand-off distances and depths field. The longer the focal length of the objective the higher is the signal level at the same stand-off distance whereas the depth of field decreases. Exchange of front lenses is swift and easy.

Note: Data below are applicable for OFV-50x and OFV-525 single-point sensor heads only. For use of OFV-MR and OFV-LR front lenses in conjunction with the PSV-400-x Scanning Vibrometers different specifications apply.

OFV-SR
Short- Range

OFV-MR
Mid- Range

OFV-LR
Long- Range

OFV-SLR
Super-Long- Range

Focal length

30 mm

60 mm

100 mm

200 mm

Min. stand-off distance

60 mm

185 mm

530 mm

1800 mm

Max. stand-off distance

5 m

10 m

100 m

>300 m

Spot size (typ.)

500 µm 
@ 2 m,
1260 µm 
@ 5 m

235 µm
@ 2 m,
604 µm
@ 5 m

135 µm
@ 2 m,
356 µm
@ 5 m

60 µm
@ 2 m,
168 µm
@ 5 m