Laser Scanning-Vibrometer

Scanning laser Doppler vibrometry, sometimes also referred to as full-field vibrometry, is a high-speed imaging measurement method for the visualization of vibrations. Scanning laser Doppler vibrometers (SLDV) from OptoMET work on the non-contact measuring principle and provide precise insights into the dynamic behavior of vibrating structures. They can find and visualize vibration modes and eigenmodes, capture the propagation of surface waves, validate FE models, characterize vibration processes and determine modal parameters.

Infrared Laser Scanning Vibrometer
Laser Vibrometer Full-Field Software
Laser Full-Field Vibrometer
Vibration dental drill
Laser Vibrometer close-up unit

Imaging vibration measurement

The Scan Series combines for the first time the superior signal quality of SWIR laser vibrometry with the informative value of imaging methods by scanning the objects under test on a flexibly definable point grid. Different measurement surfaces, wider coverage and measuring ranges are the key to new fields of application.

Scanning vibrometry makes it possible to test entire workpieces automatically in one measurement process without contact and without influence on the object and to capture local resonances and global vibration modes with low effort.

The acquired measurement data can be visualized by means of the analysis software over time and frequency as well as in the form of three-dimensional animations.

The OptoSCAN scanning software, developed by OptoMET, is used to perform the vibration measurement. The typical procedure of a measurement with the Laser Scanning Vibrometer using OptoSCAN is described on the webpage of the software.

 

Characteristics - Scan Laser Vibrometer

  • Compact, truly portable and intuitive Handling
  • SWIR laser source and large aperture with best optical sensibility
  • Open data and control interfaces
  • Vibrational velocities up to ±24,5 m/s
  • Displacement resolutions down to 50 Femtometers
  • End-to-end digital workflow
  • 3 analog outputs with a sample rate of 160 Msamples/s
  • GBit Ethernet Digital Output
  • Remote update und upgrade via Ethernet

Technical Specifications

A detailed list of all vibrometer characteristics, including all hardware and software features, can be found in the vibrometer data sheet in Support & Datasheets.

Category Characteristics
Measured quantity Velocity, Displacement, Acceleration
Signal processing Digital (OptoMET UltraDSP)
Frequency bandwidth DC bis 1 MHz
Maximum velocity 24,5 m/s
Working distance Up to 100 m
Scan angle (h x v) 50 ° x 40 °
Camera Full HD 1080p, 30x optical zoom
Ethernet Digital Output 1 GBit/s
BNC analog Outputs Displacement, velocity, acceleration, signal-generator outputs
BNC analog inputs Measurement input, 2 x reference inputs
  24-bit A/D converter per channel
  Support for IEPE (Integrated Electronic Piezoelectric) inputs
Laser wavelength Measurement laser: output power: <10 mW, eye-safe, class 1
  Targeting laser: 510-530 nm
Laser safety class Messlaser: Ausgangsleistung <10 mW, Klasse 1
  Targeting laser: output power: <1 mW, eye-safe, class 2
Operating temperature range +5 ... 40°C
Dimensions Length x width x height (excluding handle): 450 x 224 x 180 mm
Weight 12kg
Power supply 110 -240V AC (50-60Hz) oder 15 V DC
Single-Point operation mode Max. frequency 10 MHz
  Max. velocity 24,5 m/s

Laser Vibrometer Measuring- & Data Acquisition Software

Our Scanning Laser Vibrometer can either be used in scanning operation mode using the OptoSCAN software but also in single-point operation mode using the OptoGUI Software to manage the vibrometer settings, start the measurement, and perform the data analysis. Both operation modes and programs can even be used simultaneously.  

OptoGUI Software

OptoGUI is an extensive and intuitive software for remote control, data acquisition, and data analysis when working in single-point mode. Data transfer is realized via a loss-free digital Gigabit Ethernet connection. Click for detailed information about OptoGUI.

OptoSCAN

OptoSCAN is an extensive and intuitive software for remote control, data acquisition, and data analysis when working in scanning mode. Data transfer is realized via a loss-free digital Gigabit Ethernet connection. Click for detailed information about OptoSCAN.

Available decoders

A wide variety of high-performance real-time decoders are available for the evaluation of the interferometric measuring signals. The OptoMET UltraDSP technology enables the measurement of frequencies up to 10 MHz (for Single-Point Operation Mode) and vibrational velocities up to 24.5 m/s, displacements can be resolved to less than 100 fm. All vibrometers incorporate a velocity decoder. Displacement and acceleration decoders are optionally available. Numerous measuring ranges per decoder ensure that measurements can always be performed with the optimum sensitivity.

Decoders can be easily retrofitted or upgraded. Start with a basic system and adapt the capabilities of the measuring instrument as required later on. This requires no return of the instrument to the factory and no waiting times for your production or research project. The table below provides an overview of the configuration options. We will also be happy to assist you in the selection of the best decoder for your measuring task.

Description

Decoder Name

Number of measuring ranges

Max. vibrational velocity

Max. Frequency

(Scan operation mode) 

Max. Frequency

(Single-Point operation mode )

 Comments 

Basis

Velocity Decoder D-VD-1S

8

5 m/s

80 kHz

500 kHz

Required

 

Displacement Decoder D-DD-1N

19

 

 

500 kHz

Optional, for Single-Point operation mode

 

Acceleration Decoder D-AD-1N

8

 

 

500 kHz

Optional, for Single-Point operation mode

Sense

Velocity Decoder D-VD-2S

12

12 m/s

80 kHz / 1 MHz

1 MHz

Required

 

Displacement Decoder D-DD-2N-12

19

 

 

1 MHz

Optional, for Single-Point operation mode

 

Acceleration Decoder D-AD-2N-12

12

 

 

1 MHz

Optional, for Single-Point operation mode

High Speed

Velocity Decoder D-VD-3S

11

24,5 m/s

80 kHz / 1 MHz

2,5 MHz 

Required

 

Displacement Decoder D-DD-3N

19

 

 

2,5 MHz

Optional, for Single-Point operation mode

 

Acceleration Decoder D-AD-3N

11

 

 

 2,5 MHz

Optional, for Single-Point operation mode

High Frequency

Velocity Decoder D-VD-4S

9

12 m/s

80 kHz / 2 MHz

 10 MHz

Required

 

Displacement Decoder D-DD-4N

19

 

 

10 MHz

Optional, for Single-Point operation mode

 

Acceleration Decoder D-AD-4N

9

 

 

10 MHz

Optional, for Single-Point operation mode

Master

Velocity Decoder D-VD-5S

14

24,5 m/s

80 kHz / 2 MHz

10 MHz

Required

 

Displacement Decoder D-DD-5N

19

 

 

10 MHz

Optional, for Single-Point operation mode

 

Acceleration Decoder D-AD-5N

14

 

 

10 MHz

Optional, for Single-Point operation mode

 

Accessories

Scanning Vibrometer Transport Case

Scanning Vibrometer Transport Case

Stable and waterproof Peli case for safe keeping and transport of vibrometer

External dimension (L x B x H): 63,0 x 49,2 x 35,2 cm 

Scanning Vibrometer Close-Up Unit

Close-up Unit

For measurements at the shortest distances of a few mm and less.

Infrared Light Detection Card

Detector Card

Transforming the not-visible infrared light into a spot of visible light.

Laser Vibrometer Infrared Camera

IR-Camera

For digital visualizing of the laser point. The camera can be easily mounted on the gauge rail at the top of the vibrometer.

Laser Vibrometer Tripod with Fluid Head

Tripod with fluid head

Precisely align your vibrometer with high quality tripods by Manfrotto

Mobile Battery for Laser Vibrometers

Mobile Battery

Portable battery charger, external battery power bank. For powering the vibrometer when performing outdoor measurements.

Example applications for a Laser Scanning / Full Field Vibrometer

Vibration mode of a Printed Circuit Board (PCB)

Researching defects in a Carbon-plate

Vibration animation of a metal bar

Vibration animation of a sports-car door

OptoMET Laser Doppler Vibrometer - High Dynamic Range

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