Self-Aligned Focusing Schlieren (SAFS)

Focusing schlieren made easy with
near-planar density-gradient measurements.

High sensitivity
SAFS sensitivity to density gradients is equal to or greater than traditional schlieren setups.
Variable FOV
Whether you want to measure micro-fluidics or full-scale vehicle flows, this system does it all.
Localized schlieren measurements
Our systems provide near-planar schlieren measurements in the most challenging scenarios.
Ease-of-use
Unlike traditional schlieren setups, our SAFS units can be set up in a matter of minutes while still providing leading-class measurements.
Vibration resistant
Our SAFS systems are the only schlieren systems that are insensitive to facility vibrations.
Minimal optical access
Our SAFS setups are the only schlieren systems that require a single, small optical access point.
Compactness
Able to fit in a carry-on case, our SAFS systems provide more capability per cubic centimeter than any other schlieren system.

Explore our SAFS:

Projection zoom control accessible under magnetic covers

Projection focus control accessible under magnetic covers

Grid cutoff control via rotation interface

Tripod mounting rail allows for easy setup

Compatible with various light sources including LEDs and Lasers

The camera viewport is accessible behind magnetic cover

Top-mounted handle allows for easy alignment of the system

Grid inserts are accessible on the top and side of the system

Focus, zoom, and cutoff controls are accessible from both sides of the system

Front-end rotation mount allows for both vertical and horizontal gradient imaging

Large-aperature viewport can be replaced with a quarter-wave plate if needed

RHT’s Self-Aligned Focusing Schlieren (SAFS) technology won the 2025 R&D 100 award for it’s innovative technology and adaptation of focusing schlieren.

In 2025, SAFS also won the NASA invention of the year award.

Interested in SAFS?

Contact Us!

Watch Our Demos: