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ISO 10322:2026 Ophthalmic optics — Semi-finished blanks
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ISO 10322:2026 Quang học nhãn khoa — Phôi bán thành phẩm
ISO/FDIS 10322:2026 is an international standard published by the International Organization for Standardization (ISO) under the technical committee ISO/TC 172/SC 7, focusing on ophthalmic optics. This standard specifies the optical and geometrical requirements for all semi-finished spectacle lens blanks used in the production of single-vision, multifocal, and power-variation lenses. The standard aims to unify quality criteria, provide consistent testing methods, and ensure reliable performance of semi-finished lens blanks.
Key aspects include definitions of tolerances for surface power, cylindrical power, and geometrical dimensions such as actual and usable sizes. It harmonizes classifications by the type of finished surface rather than intended use and aligns lens measurements with reference wavelengths to ensure precision.
Key Topics
Classification of Semi-Finished Blanks
Semi-finished lens blanks are classified by finished surface type into:
Single-surface-power blanks (including spherical, aspherical, cylindrical, atoroidal)
Multifocal blanks
Power-variation blanks
Optical Requirements
Tolerances on nominal surface spherical and cylindrical power are measured at precise reference points, usually the geometrical centre.
Power tolerances depend on the nominal dioptre ranges, with specific limits delineated for surface spherical and cylindrical powers.
Uniformity in spherical power over a 40 mm diameter zone is required, excluding multifocal segment areas, ensuring quality consistency.
Addition and variation powers for multifocal and power-variation blanks have specific tolerance ranges.
Geometrical Tolerances
Dimensional classification includes nominal size, actual size (largest physical diameter), and usable size (manufacturer-stated usable dimension).
Tolerances on sizes are established to balance manufacturing capabilities with functional requirements.
Special cases address elliptical, non-round blanks, and predecentred blanks commonly used for better frame fit or advanced lens designs.
Test Methods
Standardized methods cover measurement of surface power, addition or variation power, segment dimensions, and quality inspection.
Tests use specified reference wavelengths and instrumentation calibrated against accepted norms (ISO 7944, ISO 8598-1).
Marking and Labelling
Clear marking on blanks and labelling on packaging assist in traceability, quality control, and proper use.
Applications
Spectacle Lens Manufacturing
Manufacturers rely on ISO 10322 for consistent semi-finished blanks that enable the production of single-vision and multifocal spectacle lenses with guaranteed optical performance and suitable geometrical fitting.
Lens Design and Innovation
The standard accommodates advances such as free-form technology and power-variation lenses with complex surfaces, ensuring new designs meet quality benchmarks.
Quality Control in Ophthalmic Optics Industry
Compliance facilitates product interchangeability, reduced defects, and improved patient visual outcomes with reliable lens blanks as a starting point.
Frame Lens Edging and Assembly
Precise sizing and markings make the edging process more accurate, particularly for predecentred and shaped blanks used in custom frame fitting.
Related Standards
ISO 7944 – Optics and photonics - Reference wavelengths used for optical measurements.
ISO 8598-1 – Optics and optical instruments - Focimeters - Part 1: General purpose instruments.
ISO 13666 – Ophthalmic optics - Spectacle lenses - Vocabulary, defining terms in lens optics.
ISO 14889 – Ophthalmic optics - Spectacle lenses - Fundamental requirements for uncut finished lenses, referenced for material specifications.
ISO 21987 – Related to terminology for power-variation lenses, adopted to harmonize definitions and measurements.
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ISO 10322:2026 Quang học nhãn khoa — Phôi bán thành phẩm
ISO/FDIS 10322:2026 is an international standard published by the International Organization for Standardization (ISO) under the technical committee ISO/TC 172/SC 7, focusing on ophthalmic optics. This standard specifies the optical and geometrical requirements for all semi-finished spectacle lens blanks used in the production of single-vision, multifocal, and power-variation lenses. The standard aims to unify quality criteria, provide consistent testing methods, and ensure reliable performance of semi-finished lens blanks.
Key aspects include definitions of tolerances for surface power, cylindrical power, and geometrical dimensions such as actual and usable sizes. It harmonizes classifications by the type of finished surface rather than intended use and aligns lens measurements with reference wavelengths to ensure precision.
Key Topics
Classification of Semi-Finished Blanks
Semi-finished lens blanks are classified by finished surface type into:
Single-surface-power blanks (including spherical, aspherical, cylindrical, atoroidal)
Multifocal blanks
Power-variation blanks
Optical Requirements
Tolerances on nominal surface spherical and cylindrical power are measured at precise reference points, usually the geometrical centre.
Power tolerances depend on the nominal dioptre ranges, with specific limits delineated for surface spherical and cylindrical powers.
Uniformity in spherical power over a 40 mm diameter zone is required, excluding multifocal segment areas, ensuring quality consistency.
Addition and variation powers for multifocal and power-variation blanks have specific tolerance ranges.
Geometrical Tolerances
Dimensional classification includes nominal size, actual size (largest physical diameter), and usable size (manufacturer-stated usable dimension).
Tolerances on sizes are established to balance manufacturing capabilities with functional requirements.
Special cases address elliptical, non-round blanks, and predecentred blanks commonly used for better frame fit or advanced lens designs.
Test Methods
Standardized methods cover measurement of surface power, addition or variation power, segment dimensions, and quality inspection.
Tests use specified reference wavelengths and instrumentation calibrated against accepted norms (ISO 7944, ISO 8598-1).
Marking and Labelling
Clear marking on blanks and labelling on packaging assist in traceability, quality control, and proper use.
Applications
Spectacle Lens Manufacturing
Manufacturers rely on ISO 10322 for consistent semi-finished blanks that enable the production of single-vision and multifocal spectacle lenses with guaranteed optical performance and suitable geometrical fitting.
Lens Design and Innovation
The standard accommodates advances such as free-form technology and power-variation lenses with complex surfaces, ensuring new designs meet quality benchmarks.
Quality Control in Ophthalmic Optics Industry
Compliance facilitates product interchangeability, reduced defects, and improved patient visual outcomes with reliable lens blanks as a starting point.
Frame Lens Edging and Assembly
Precise sizing and markings make the edging process more accurate, particularly for predecentred and shaped blanks used in custom frame fitting.
Related Standards
ISO 7944 – Optics and photonics - Reference wavelengths used for optical measurements.
ISO 8598-1 – Optics and optical instruments - Focimeters - Part 1: General purpose instruments.
ISO 13666 – Ophthalmic optics - Spectacle lenses - Vocabulary, defining terms in lens optics.
ISO 14889 – Ophthalmic optics - Spectacle lenses - Fundamental requirements for uncut finished lenses, referenced for material specifications.
ISO 21987 – Related to terminology for power-variation lenses, adopted to harmonize definitions and measurements.
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INBOX HỖ TRỢ MUA TÀI LIỆU (90% GIÁ GỐC)
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