BS 2738-4:1992
Superseded
View Superseded by
Spectacle lenses Specification for single-vision and multifocal semi-finished lens blanks
Hardcopy , PDF
English
09-15-1992
08-15-1996
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
Gives tolerances for optical and geometrical properties.
| Committee |
CH/172
|
| DevelopmentNote |
BS DRAFT 93/508650 DC REFERS TO NEW REVISION
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 10322-1:1991 | Identical |
| ISO 8980-1:2017 | Ophthalmic optics — Uncut finished spectacle lenses — Part 1: Specifications for single-vision and multifocal lenses |
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