Import Blocker Blue Lenses — Buy in Bulk from Supplier in China

Blocker blue lenses from Changxing Optical Glasses Factory are optical filters designed to reduce blue light transmission in the 400 to 450 nanometre range, targeting digital screen exposure. The lenses are manufactured from polycarbonate with an embedded blue-light-absorbing compound, not a surface coating, ensuring durability and consistent performance. They transmit approximately 75% of visible light while blocking 20% to 30% of high-energy blue wavelengths, based on internal spectral analysis.

These lenses feature a standard anti-reflective layer applied via vacuum deposition, reducing surface glare by up to 95% across the visible spectrum. The material has a refractive index of 1.59 and a specific gravity of 1.20, contributing to a lightweight feel. Scratch resistance is achieved through a hard-coat process compliant with ISO 12311:2013, not through material hardness alone. The lenses are compatible with most frame types, including metal, acetate, and TR90, and are available in clear and light amber tints.

Primary buyers include distributors of eyewear for office workers, gamers, and healthcare professionals who use digital displays for extended periods. Packaging is typically in bulk polyethylene sleeves, 50 or 100 pieces per box, with optional custom branding. Trade terms are typically FOB Shanghai or CIF destination port, with minimum order quantities starting at 500 pairs. Lead time is 15 to 25 days after deposit, contingent on order volume and seasonal demand.

Changxing Optical Glasses Factory is a manufacturing facility located in Danyang, Jiangsu Province, China, specialising in optical lens components for consumer and commercial eyewear. The supplier is classified as an imported-tier vendor with harbor trust verification, indicating verified export history and compliance with Chinese export regulations. The listing does not claim certifications such as ISO or CE, nor does it state any design patents, R&D team size, or client names.

Production capacity is not disclosed, but the facility operates under standard optical lens manufacturing protocols for polycarbonate and CR-39 materials. The supplier does not offer custom lens designs or prescription services; the product line is limited to standard blue-light-blocking lenses. Response rates and average reply times are not tracked, suggesting limited sales support infrastructure. Buyers should verify production capabilities directly before placing bulk orders.