BS 2738-4(1996) : 1996 AMD 9759
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
SPECTACLE LENSES - SPECIFICATION FOR SINGLE-VISION AND MULTIFOCAL SEMI-FINISHED LENS BLANKS
15-11-1997
23-11-2012
Committees responsible
National foreword
Specification
1 Scope
2 Normative references
3 Definitions
4 Classification
5 Requirements
6 Test methods
7 Identification
8 Reference to this part of ISO 10322
Annex
A (informative) Material and surface quality
Tables
1 Tolerances on the surface power for nominally
spherical surfaces
2 Tolerances on the surface power for nominally
spherical surfaces
3 Tolerances on the addition power
Figures
1 Measurement of the addition power
A.1 Recommended system for visually inspecting a lens
for defects
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