BS 2738-5(1996) : 1996 AMD 9761
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
SPECTACLE LENSES - SPECIFICATION FOR PROGRESSIVE POWER SEMI-FINISHED LENS BLANKS
08-03-2006
23-11-2012
Committees responsible
National foreword
Specification
1 Scope
2 Normative references
3 Definitions
4 Classification
5 Requirements
6 Test methods
7 Marking
8 Identification
9 Reference to this part of ISO10322
Annexes
A (informative) Material and surface quality
B (informative) Method for evaluating progressive
addition lens characteristics
C (informative) Bibliography
Tables
1 Tolerances on the surface power
2 Tolerances on the addition power
Figures
A.1 Recommended system for visually inspecting a lens
for defects
B.1 Measurement of the optical characteristics in the
as-worn position
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.