GB/T 27995.2-2025
ActiveSemi-finished spectacle lens blanks—Part 2: Power-variation
半成品镜片毛坯 第2部分：渐变焦
Application Summary AI generated
This standard specifies the technical requirements, test methods, and marking for semi-finished spectacle lens blanks with progressive power variation. It is applied in the manufacturing and quality inspection of progressive addition lenses used in prescription eyewear, ensuring consistent optical performance for multifocal vision correction. The standard is relevant for ophthalmic lens producers, optical laboratories, and quality assurance in the healthcare and eyewear industries.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.