
1.56 Photochromic Bifocal Lenses
A 1.56 resin bifocal lens program combining distinct distance and near zones with grey or brown photochromic response and HMC anti-reflective coating for indoor-to-outdoor everyday eyewear.
Request a quoteWholesale lens category
Light-adaptive lens programs specified around clear-state appearance, activated color, activation and fade behavior, prescription design, and repeatable test conditions.
Category guide
Photochromic lenses darken when activated by selected ultraviolet or light conditions and return toward a clearer state when the stimulus is removed. Color depth and response can vary with temperature, UV intensity, material, lens thickness, coating, age, and the test method used.
Wholesale comparison should therefore use agreed activation and fade conditions rather than visual claims alone. Define the index, design, power matrix, photochromic color, clear-state target, activated-state transmission, coating, diameter, and representative samples before bulk ordering.
Available programs
Open a product page for detailed parameters, sample checks, customization options, and procurement FAQs.

A 1.56 resin bifocal lens program combining distinct distance and near zones with grey or brown photochromic response and HMC anti-reflective coating for indoor-to-outdoor everyday eyewear.
Procurement reference
Final availability, tolerances, testing, packing, and commercial terms are confirmed against the approved product specification.
Buyer applications
Category FAQ
Temperature, UV intensity, exposure time, material, thickness, and previous conditioning can all affect the observed result. Compare samples under the same documented conditions.
Performance behind a windscreen depends on the photochromic technology and how much activating UV or light reaches the lens. Vehicle-use expectations should be specified separately.
It can be evaluated and approved against samples, but the target and tolerance must be defined with the selected material, color, power, and coating.
No. Transmission curve, activated depth, perceived contrast, clear-state appearance, and response behavior may differ, so each color should be sampled.
Use representative powers and both selected colors where relevant, then compare clear state, activated state, fade, optics, coating cosmetics, and pair consistency.
Request a focused quotation
We will review the product route, representative samples, packaging requirements, and information needed for a repeatable order.
Discuss photochromic lensessales@colaoptic.com · Typical first reply within 1 business day