VIVIFoCAL S1 Product Overview
From a quick glance at your phone to a closer look at the details on your workbench, everyday life rarely stays at one viewing distance. VIVIFoCAL S1 Adaptive Eyewear brings a different approach to these transitions, using distance sensing and moving-lens optics to adjust focus automatically as viewing distance changes.
Is VIVIFoCAL S1 Right for You? Discover Adaptive Focus

Your Prescription. Your VIVIFoCAL S1.
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Core Product Feature: Adaptive Focus
Traditional bifocals and progressive lenses provide different optical powers through designated areas of the lens. VIVIFoCAL S1 takes a different approach: its optical system adjusts lens power based on measured viewing distance, rather than relying on fixed viewing zones alone. It's a new way to bring near and far tasks together in one pair of eyewear.

Discover more about VIVIFoCAL S1 Adaptive Eyewear on the product page.
How VIVIFoCAL S1 Works
Four systems, working together: sensing, computing, actuation, and focusing.
1. Sensing
A time-of-flight (ToF) sensor built into the bridge emits light signals and detects their reflections to measure the distance to objects ahead. These measurements provide distance data for S1's adaptive focus system.

2. Computing
Using distance measurements and focus-control calculations, the microcontroller (MCU) determines the lens movement needed to reach the target optical power.

3. Actuation
The MCU directs the motor to make the calculated adjustment. VIVIFoCAL's transmission mechanism then translates motor movement into controlled lens displacement.

4. Focusing
At the heart of S1 is an Alvarez optical system. By shifting two complementary lens elements relative to one another, it changes optical power to support focus adjustment across different viewing distances.

From Distance Sensing to Adaptive Focus
Distance sensing, precise calculations, motor-driven movement, and dynamic optics all work together in VIVIFoCAL S1—designed to make everyday transitions between viewing distances more seamless.

Discover VIVIFoCAL S1 Adaptive Eyewear. Explore the product and current reservation options.