Spin Coating Technology

The Spin Coating process deposits a homogeneous photochromic layer onto the surface of the glass by centrifugation. This method creates a thin and uniform film, guaranteeing superior reactivity, durability, and aesthetics compared to bulk photochromic coatings.

The photochromic layer is applied in rapid rotation, evenly distributed by centrifugal force, and then cured by UV light for permanent fixation. Precise control of the parameters allows for fine-tuning of the photochromic properties.

Advantages of Spin Coating

  • Optimal homogeneity

    Uniform distribution across the entire optical surface, from center to periphery. No variation in tint or performance depending on the area of ​​the lens.

  • Activation speed

    Reduced photochromic change times thanks to the thin thickness of the active layer.

  • Increased durability

    Better resistance to UV degradation and mechanical wear compared to bulk photochromics.

  • Aesthetic

    Uniform tint, no gradient effect between center and edges. Neat and professional appearance.

  • Versatility

    Applicable to all indices and materials, including high indices that are traditionally difficult to dye.

Range available

  • Spin Coating standard

    Classic grey and brown shades, all indices from 1.50 to 1.74.

  • Smart Q-Change

    New generation photochromic index 1.56, optimized response time, superior darkening and washing speed.

  • Colored photochromic lenses

    Special shades of pink, purple, blue, green for aesthetic customization.