Why Choose the Alta Evolution Gravitech® Lens Tracer / Blocker?

Gravitech® Patented Optical Tracer

Briot has developed the first optical tracing system capable of using just one reference point to recreate the a flawless 3D shape in just 4 seconds. With our patented GraviTech® technology, users achieve 1:1 shape reproduction and sizing with results that are superior to mechanical tracers.

Advanced Shape Detection and Repair

Our unique tracing system allows for the reproduction and repair of complex shapes with an intuitive interface that makes shape modification a breeze.

Alta Evolution Progressive Lens Blocking

Layout Visualization and Progressive Lens Marking Recognition

The high resolution camera can accurately capture the laser engravings on progressive lenses to make layout easy and stress-free. With the Alta Evolution, you can edge every lens with complete confidence.



  • Parallax-free decentration and blocking
  • High definition camera (1.3 Megapixels) assisted blocking lays out Single Vision, Bifocals, and Progressives
  • Automatic drill point recognition
  • Easy drill hole modificaiton and placement
  • Ability to add blind holes
  • Lens shape capture without a demo lens
  • Digital Lens Clock: measures the front base-curve of the lens in a matter of seconds.
  • Positioning accuracy within .05mm
  • Shape modification with both vertical and horizontal boxing modification
  • 10.5″ Color Touchscreen
  • LCD User-friendly touch based interface
  • Automatic calibration
  • Compliant with the VCA/OMA Communication Standard
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Alta Evolution Tracer / Blocker

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