Scanning laser Doppler vibrometry is a full-field vibration imaging measurement technique in which the vibrometer measurement beam scans the test object and records the vibration data of a grid of measurement points within a short time.
The Optomet Scanning Laser Doppler Vibrometer (SLDV) combines the superior signal quality of the NOVA SWIR digital vibrometers with beam deflection mirrors, a HD video camera, an integrated signal generator and inputs for reference channels. With the OptoSCAN software, the scanning laser vibrometer becomes a turn-key and intuitively operated vibration visualization system. In conjunction with the OptoGUI software, the SLDV can be operated as a single-point vibrometer.
The non-contact vibration measurement of any test structure provides precise and valuable insight into the structure’s dynamic behavior. Operating and structural vibrations can be animated, resonances identified, finite element model calculations validated, or the energy propagation of surface waves made visible.
Optomet pioneered the world’s first short-wave infrared (SWIR) laser-based Scanning Laser Doppler Vibrometer which eliminates the need for surface treatment and produces the highest quality data through superior measurement sensitivity.
The Optomet Scanning Laser Doppler Vibrometer has the industry’s largest optical aperture, maximizing the collection of reflected laser light. This ensures the highest possible measurement sensitivity even at points with minimal laser backscattering.
By combining the ultra-high sensitivity of the Optomet Scanning Laser Doppler Vibrometer with the superior signal quality of the SWIR laser technology, even surfaces with minimal optical reflectivity and at the greatest measurement distances can be accurately measured. Test objects with varying surface reflectivity and complex geometries are measured by the Optomet Scanning Laser Doppler Vibrometer in one measurement process, without the measurement surface having to be prepared with reflective film.
The OptoSCAN scanning laser vibrometer software is the industry’s most user friendly and modern user interface which enables even inexperienced users to efficiently obtain precise measurement data. For details see SOFTWARE / OptoSCAN.
Features common to all Optomet SWIR Digital Laser Doppler Vibrometers include ultraDSP universal digital signal processing, real portability, intuitive hardware and state of the art software are described in more detail in the product-overview.
A detailed list of all vibrometer characteristics, including all hardware and software features, can be found in the vibrometer data sheet in Support & Datasheets.
|Measured quantity||Velocity, Displacement, Acceleration|
|Signal processing||Digital (OptoMET UltraDSP)|
|Frequency bandwidth||DC up to 10 MHz|
|Maximum velocity||25 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: 1550 nm, <10 mW, eye-safe, class 1|
|Targeting laser: 510-530 nm|
|Laser safety class||Measurement laser: output power <10 mW, eye-safe, class 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|
|Power supply||110 -240V AC (50-60Hz) oder 12 V DC|
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 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 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.
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 24 MHz (for Single-Point Operation Mode) and vibrational velocities up to 25 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.
Number of measuring ranges
Max. vibrational velocity
Max. Frequency (Scan-Mode)
Velocity Decoder D-VD-1N
Displacement Decoder D-DD-1N
Acceleration Decoder D-AD-1N
Velocity Decoder D-VD-2N-12
Displacement Decoder D-DD-2N-12
Acceleration Decoder D-AD-2N-12
Velocity Decoder D-VD-3N
Displacement Decoder D-DD-3N
Acceleration Decoder D-AD-3N
Velocity Decoder D-VD-4N
Displacement Decoder D-DD-4N
Acceleration Decoder D-AD-4N
Velocity Decoder D-VD-5N
Displacement Decoder D-DD-5N
Acceleration Decoder D-AD-5N
Stable and waterproof Peli case for safe keeping and transport of vibrometer
External dimension (L x B x H): 62,5 x 49 x 35 cm
For measurements at the shortest distances of a few mm and less.
Transforming the not-visible infrared light into a spot of visible light.
For digital visualizing of the laser point. The camera can be easily mounted on the gauge rail at the top of the vibrometer.
Precisely align your vibrometer with high quality tripods by Manfrotto
Portable battery charger, external battery power bank. For powering the vibrometer when performing outdoor measurements.
Protects the scanning mechanism against dust, wind and acoustic excitation at high sound pressure levels. Specially coated optical-grade glass window to avoid laser distortions.
Example applications – Laser Scanning Vibrometer
Vibration animation of a sports-car door
Vibration animation of a metal bar
Researching defects in a CFRP plate
Vibration mode of a Printed Circuit Board (PCB)