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  • BS 2738-4(1992) : 1992

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    SPECTACLE LENSES - SPECIFICATION FOR SINGLE-VISION AND MULTIFOCAL SEMI-FINISHED LENS BLANKS

    Available format(s):  Hardcopy, PDF

    Superseded date:  15-08-1996

    Language(s):  English

    Published date:  01-01-1992

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    National foreword
    Specification
    1. Scope
    2. Normative references
    3. Definitions
    4. Classification
    5. General requirements
    6. Test methods
    7. Identification
    8. Reference to this part of ISO 10322
    Tables
    1. Tolerances on surface power for spherical surfaces
    2. Tolerances on surface cylinder power for cylindrical
         surfaces
    Figures
    1. Recommended system for visually inspecting a lens
         for defects
    2. Measurement of the distance vertex power

    Abstract - (Show below) - (Hide below)

    Specifies requirements for the geometric and optical properties of semi-finished single vision and multifocal lens blanks. Coverage includes definitions, classification, test methods and identification. Also includes tables and diagrams.

    General Product Information - (Show below) - (Hide below)

    Committee HCC/78
    Development Note BS DRAFT 93/508650 DC REFERS TO NEW REVISION
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 8980-1:2017 Ophthalmic optics — Uncut finished spectacle lenses — Part 1: Specifications for single-vision and multifocal lenses
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