BS 3521-1:1991
Current
The latest, up-to-date edition.
Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to ophthalmic lenses
Hardcopy , PDF
English
30-09-1991
Committees responsible
Foreword
Glossary
Section
1 Basic and general terms
2 Types of surfaces
3 General classes of lenses
4 Focal properties
5 Prismatic properties
6 Spherical lenses
7 Astigmatic lenses
8 Image defects and best-form lenses
9 Lenticular lenses
10 Bifocal, multifocal and progressive power lenses
11 Tinted and coated lenses
12 Protective lenses
13 Magnifying devices
14 Miscellaneous lenses and spectacles
15 Trial case accessories
16 Manufacturing processes
17 Defects
18 Verification
19 Miscellaneous terms
Figures
1 Boxed lens size, lens shape and shape difference
2 Tyre formation
3 Barrel formation
4 Capstan formation
5 Oblique astigmatism
6 Bifocal lens: segment circle
7 Segment dimensions
8 Bifocal lens: segment inset
Index
Defines terms used to describe lenses, their ophthalmic properties and defects, and the manufacturing processes.
| Committee |
CH/172
|
| DevelopmentNote |
Supersedes 89/50063 DC and BS 3521-1&2(1962) (07/2005) Reviewed and confirmed by BSI, January 2013. (12/2012)
|
| DocumentType |
Standard
|
| Pages |
48
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| SupersededBy | |
| Supersedes |
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