The NOVA-Series is a modern laser doppler vibrometer (LDV) operating with a Short-Wavelenght-InfraRed (SWIR) measurement laser. The NOVA Series comes in when maximum dynamic range is required or every decibel of signal level counts. Typical use cases are surfaces that poorly reflect visible light, for example dark and rough surfaces or biological tissue. Signal strength is also of vital importance for measurements over very long distances, e.g. in civil engineering or aerospace.
Measurements on Carbon-composite plates or other non-cooperative materials are as easily performed as measurements at distances of more than 200 m without any special surface treatment.
The NOVA-series can measure even on the blackest black with the best Signal-to-Noise-Ratio (SNR) at the highest precision and accuracy. The key to this lies in the infrared range of the SWIR laser source. Key features of the infrared vibrometry are:
The SWIR laser operates at a wavelength of 1,550 nm with a laser power of10 mW, ten times the power of a HeNe system, while maintaining full eye safety at laser safety class 1.
Photodetectors in this infrared range have an efficiency of more than 98%. Compared to a HeNe-Vibrometer the increased laser power and higher photo-efficiency lead to a 20 dB higher SNR.
The SWIR laser vibrometer has a single stabilized laser mode which guarantees stability of the measurement with respect to changes in the working distance or ambient temperature.
At the same time, measurements up to 24 MHz with vibration velocities of up to 25 m/s are possible. In connection with different optical systems and decoders, the NOVA is up to virtually any vibration measurement task. A coaxially guided green laser in the visible range facilitates the positioning of the infrared measuring point.
Optomet continuously aimes at innovations and progress in laser vibrometry and provides solutions suited to the high demands of modern vibration measurements. The SWIR laser source is only one of many featurer leading you to the best achievable vibration measurement solution. Further key features of the NOVA-series LDV are:
Laser source, optics, interferometer, signal processing, and arbitrary signal generator are combined in one box, powered by 12 V DC. Optomet LDV are the perfect all-in-one measurement solution that can even be used with commercially available powerbanks for mobile operation.
The vibrometer and the measurement software OptoGUI are designed for easy and intuitive use. OptoGUI offers a simple and lucid user interface to guide the user through the measurement. Even users new to vibrometry will obtain precise vibration data in no time.
Measurement data are processed by an integrated FPGA and digitally transmitted via Gigabit Ethernet. Data processing is carried out with a sampling rate of 160 MS/s with a data resolution of up to 32-Bit, which translates to a dynamic range of 220 dB.
Additionally, all vibrometer, measurement, and signal generator settings can be remotely controlled via Ethernet. Measurement data can be simultaneously read out via the Ethernet connection and analog BNC connectors.
A detailed list of all vibrometer characteristics, including all hardware and software features, can be found in the vibrometer data sheet in Support & Datasheets.
|Laser wavelength||Measurement laser: 1550 nm|
|Targeting laser: 510-530 nm|
|Laser class||Measurement laser: output power: <10 mW, class 1|
|Targeting laser: output power: <1 mW, class 2|
|Measured quantity||Velocity, Displacement, Acceleration|
|Frequency bandwidths||DC to 24 MHz|
|Max. vibrational velocity||25 m/s|
|Output signal (digital)||GBit-Ethernet (RJ45) / WiFi|
|Output signal (analogue)||3 x Standard BNC connectors|
|Signal processing||Digital (OptoMET UltraDSP)|
|User interface output||Color screen 3.5" + 20 segment LED bargraph|
|User interface input||Touch screen, knobs with push-button, key switch (power)|
|Dimensions||Length x width x height (excluding handle and lens): 380 x 180 x 148 mm|
|Mounting||Standard tripod screw thread|
|Power supply||110 -240V AC (50-60Hz) oder 12V DC|
|Power consumption||27 Watt|
|Operating temperature range||5°C to 40°C|
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.
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 and vibrational velocities up to 24.5 m/s with the Nova-Series, displacements can be resolved to less than 100 fm. All vibrometers incorporate a velocity decoder, and 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. 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
Velocity Decoder D-VD-1N
DC - 500 kHz
Displacement Decoder D-DD-1N
Acceleration Decoder D-AD-1N
Velocity Decoder D-VD-2N
DC - 1 MHz
Displacement Decoder D-DD-2N
Acceleration Decoder D-AD-2N
Velocity Decoder D-VD-2N-R
DC - 25 kHz
Displacement Decoder D-DD-2N-R
Acceleration Decoder D-AD-2N-R
DC - 1 MHz
Velocity Decoder D-VD-3N
DC - 2,5 MHz
Displacement Decoder D-DD-3N
Acceleration Decoder D-AD-3N
Velocity Decoder D-VD-4N
DC - 10 MHz
Displacement Decoder D-DD-4N
Acceleration Decoder D-AD-4N
Velocity Decoder D-VD-5N
DC- 10 MHz
Displacement Decoder D-DD-5N
Acceleration Decoder D-AD-5N
Several lenses are available which are optimized for the Nova-Series. Choose the right optical system based on working distance, reflectivity of the surface to be measured or size of the focus point. The lenses are easily exchangeable due to a bayonet lock as on single-lens reflex cameras.
The table below provides an overview of the configuration options. We will also be happy to assist you in the selection of the best lens for your measuring task.
Stable and waterproof Peli case for safe keeping and transport of vibrometer.
External dimension (L x B x H): 61.9 x 49.2 x 22.3 cm
Compact und light transport bag for the outdoors-measurements
For measurements from a greater distance, a telescope makes it easier to find the measuring point. The telescope can be easily mounted on the gauge rail at the top of the vibrometer.
For digital visualizing of the laser point. The camera can be easily mounted on the gauge rail at the top of the vibrometer.
Transforming the not-visible infrared light into a spot of visible light.
Portable battery charger, external battery power bank. For powering the vibrometer when performing outdoor measurements.
Precisely align your vibrometer with high quality tripods by Manfrotto