miniLDV
2DminiLDV
3D miniLDV
microPro
Long-Distance Probes
UltraLDV

MSE specializes in miniaturized optical sensors with three universal characteristics: minimum size, minimum weight, and minimum power consumption. We offer a complete line of Laser Doppler Velocimetry systems with unequaled compactness and ease of use.

Velocity Measurement

The miniLDV™, ultraLDV™, microPro™, microV™, and microS™ are the smallest, lightest, and lowest-power-consumption sensors currently available for optical speed measurement. All three sensor types can measure speed as well as direction, but each is tuned for a specific measurement distance. The ultraLDV, designed for applications where sensitivity and precision are of utmost importance, the 2D miniLDV, a true two-component sensor, the 3D miniLDV, and the Integrated miniLDV, a miniLDV probe with built-in Processing Engine in a package about the size of a text book.

“LDV” stands for “Laser Doppler Velocimeter”—but unlike our competitors’, MSE’s probes are extremely easy to use because they do not require any complicated alignment after manufacturing.

A miniPIV system is a great complement to the above sensors and offers a wide range of fields of view.

Particle Statistics

The miniPCS™ is a particle sizer/counter based on Mie scattering theory, able to measure particle size over a wide range. Its built-in acquisition electronics make it especially suitable for field tests.

Flow Facilities

The flowLab™ is a table-top-sized water tunnel, perfect for small research projects, expositions, and classroom demonstrations.


SensorMeasurement distance (Air)Application
miniLDV / Integrated miniLDV33, 50, 100, 150, 240 mmvelocity measurement (surfaces and fluids)
2D miniLDV50, 100, 150, 240 mm2D velocity measurement (surfaces and fluids)
3D miniLDV100, 150, 240 mm3D velocity measurement (surfaces and fluids)
ultraLDV150 mmvelocity (with small fluctuations)
microPro15 mmBoundary layer profiles; shear stress in fluids
microV7.4 mmvelocity measurement in fluids
microS75 μm, 135 μmwall shear stress in fluids