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Ono Sokki LV-1800 Laser Doppler Vibrometer

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Product SKU: LV-1800

Manufacturer: Ono Sokki

The LV-1800 non-contact type Laser Doppler Vibrometer uses newly designed interference optical system and has achieved improvement of detection sensitivity by 20 dB compared to the conventional models. The built-in positioning camera makes it easy to check the target by laser beam irradiation.

The LV-1800 can perform amplitude velocity measurements in a wide range of fields that are difficult with a contact type vibration sensor; small actuator using piezoelectric element, cell phones and digital camera with MEMS (Micro Electro Mechanical Systems), inverter an other devices in an EV/HEV. By using the LV-1800 with FFT Analyzer, it is possible to visualize not just vibration but the state of the vibration.

BROCHURE:  LV-1800 Data Sheet


Integrated sensor and camera

Without degradation of the detection sensitivity, you can check targets and the parts irradiated by laser beams displaying on the Windows based PC.

Greatly increased detection ability

Newly designed interference optical system has achieved improved the detection sensitivity by 20dB (ten times) compared to the conventional models. Restrictions of targets and detecting environment have been dramatically eased to facilitate sensor installation and setup.

Detectable various targets with wide range up to 4 ranges

The LV-1800 can detect a wide range of amplitude from 10 m/s to 0.05 µm/s* from high velocity amplitudes of ultrasonic tools and piezoelectric devices to small amplitudes generated by thin film, MEMS, and ceramic capacitors.

*: When the LV-0800 small velocity range board is mounted.

Quick confirmation of the focal position and the detection status

The level indicator equipped on the sensor helps quick and reliable setup while checking the focal position or detection status at hand.

Small and light-weight sensors with excellent ease of use

Level indicator and error indicator are equipped on the sensor so that checking of detection status and setup become easy. As being designed to be separated from laser light source, the sensor is small and light-weight. Without any restrictions, laser beams can be irradiated in all directions.

Easy storage and transporting

The main unit of the LV-1800 is 33% lighter compared to the conventional model. As the sensor and the cable can be stored in the main body, storage and transportation can be done easily and safely. Storage trunk (option) can store the magnetic stand, illumination unit as well as the main unit.

Wide range of options provide utmost solutions

As the LV-1800 has wide variety of options, you can find suitable applications depending on requirements. For example, using the LV-1800 with an FFT Analyzer and exclusive software can visualize the behavior and characteristics of a target.


Detection unit


Detection demodulation system

Velocity demodulation using optical heterodyne detection

Laser beam

Light source He-Ne laser (632.8 nm wavelength)
Reflected light output

Within 1 mW 

Laser safety standard Conforming to Laser Class 2 
* Please refer to  for more details.
Minimum laser spot diameter Approx. 20 μm or less (φ=1/e2 when the focusing position is 100 mm.)
Approx. 3 μm or less (When the LV-0151A is mounted.) WD=approx. 38.9 mm
Standard lens Variable-focus lens

100 mm to 10 m (∞)

Distance scale

100 mm to 10 m (∞)  *With the coherence length mark

Size of attachment

M22 x 0.5 Depth 5.5 mm

Built-in positioning camera 
LV-0181 (option)

Installing method

Built-in the sensor (Can be installed after delivery. Please contact your nearest distributor for more details.)


USB 2.0 
*output from the conversion section USB mini-B connector

Imaging element

CMOS color 1/4-inch

Number of pixels

More than 300,000 pixels

Image size

VGA (640 x 480)

Frame rate

30 frames/second

Minimum imaging range

10 x 7.5 mm (TYP) WD=100 mm (at minimal length)

2.1 x 1.6 mm (TYP) When the LV-0151A objective lens is mounted. 

Imaging position

An erect image when you see the indicator panel of the sensor head.



White balance




Operating environment

Windows® / XP (SP2 or later)/Vista (SP1 or later)/7 Direct-X 9.0 or later/ Display True Color 24 bit or more

Camera focus  Adjusted by the objective lens, confocal with the laser spot 
Sensor suspending Screw for sensor suspension Backside x1 M8 depth 8mm *LV-0030 large size magnetic stand can be used.
Side x1
Side x 2 M4 depth 5 mm
Tripod setup Use the LV-0019 camera screw adapter (option)
Demodulation sensitivity monitor