BS 3521-2:1991+A1:1996
Current
The latest, up-to-date edition.
Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to spectacle frames
Hardcopy , PDF
English
30-09-1991
Foreword
Committees responsible
Glossary
Section
1 General terms and styles
2 Nomenclature of parts
3 Shapes for lenses and apertures in frames
4 Processes
5 Types of welded and soldered attachments
6 Dimensions and measurements
Figures
1 Boxed lens systems (single lens)
2 Diagrammatic representation of boxed lens systems
for spectacles
3 Crest height
4 Projection (or inset) of bridge
5 Projection of bridge when rims do not lie
substantially in a plane
6 Angle of crest
7 Distance between rims (DBR) of a regular bridge
8 Apical radius of a regular bridge
9 Vertical angle of pad
10 Pad angles
11 Ear point and angle of the side
12 Length to tangent
13 Dimensions of drop-end sides
14 Frame temple width, frame head width and angle of
let-back
15 Swept-back lug
16 Inward angle of drop
Index
Terms used to describe the shapes, parts of and processes in the production of frames.
| Committee |
CH/172
|
| DevelopmentNote |
Supersedes BS 3521-1&2(1962) and 89/50064 DC (07/2005) Reviewed and confirmed by BSI, November 2012. (10/2012)
|
| DocumentType |
Standard
|
| Pages |
28
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
| 04/100506 DC : DRAFT JAN 2004 | BS 2738-3 - SPECTACLE LENSES - PART 3: SPECIFICATION FOR THE PRESENTATION OF PRESCRIPTIONS AND PRESCRIPTION ORDERS FOR OPHTHALMIC LENSES |
| BS 2738-3(2004) : 2004 | SPECTACLE LENSES - PART 3: SPECIFICATION FOR THE PRESENTATION OF PRESCRIPTIONS AND PRESCRIPTION ORDERS FOR OPTHALMIC LENSES |
| BS 3521-1:1991 | Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to ophthalmic lenses |
| BS 7394-2:2007 | Complete spectacles Specification for prescription spectacles |
| BS 7394-1:1996 | Complete spectacles Specification for ready-to-wear near-vision spectacles |
| BS 2724:1987 | Specification for sun glare eye protectors for general use |
| BS 6625-2(1992) : AMD 9446 | SPECTACLE FRAMES - SPECIFICATION FOR MARKING |
| 07/30082138 DC : DRAFT FEB 2007 | BS 7394-2 - COMPLETE SPECTACLES - PART 2: SPECIFICATION FOR PRESCRIPTION SPECTACLES |
| BS 7394-2:1994 | Complete spectacles Specification for prescription spectacles |
| BS 2738-1:1989 | Spectacle lenses Specification for tolerances on optical properties of mounted spectacle lenses |
| BS 2738-3:1991 | Spectacle lenses Specification for the presentation of prescriptions and prescription orders for ophthalmic lenses |
| BS 4274(1968) : AMD 9200 | SPECIFICATION FOR TEST CHARTS FOR DETERMINING DISTANCE VISUAL ACUITY |
| BS 3062:1985 | Specification for ophthalmic lens materials |
| BS 3199:1972 | Method for measurement of spectacles including a glossary of terms |
| BS EN ISO 11380:1997 | Optics and optical instruments. Ophthalmic optics. Formers |
| BS EN ISO 7998:2005 | Ophthalmic optics. Spectacle frames. Lists of equivalent terms and vocabulary |
| BS 3668:1963 | Specification for red and green filters used in ophthalmic dichromatic and dissociation tests |
| BS 4110:1979 | Specification for eye-protectors for vehicle users |
| BS 6625-2(1992) : AMD 9446 | SPECTACLE FRAMES - SPECIFICATION FOR MARKING |
| BS 7394-1:1991 | Complete spectacles Specification for ready-to-wear near-vision spectacles |
| BS 7394-2:1994 | Complete spectacles Specification for prescription spectacles |
| BS 3172:1987 | Specification for screw threads for spectacle frames |
| BS 6903(1987) : 1987 AMD 9444 | SPECIFICATIONS FOR GRADUATED DIAL SCALES FOR OPHTHALMIC INSTRUMENTS |
| BS 2738:1985 | Specification for tolerances on optical properties of mounted spectacle lenses |
| BS 3521-1:1991 | Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to ophthalmic lenses |
| BS 3162:1959 | Specification for ophthalmic trial case lenses |
| BS 6625-1:1985 | Spectacle frames. Specification for general requirements |
| BS 7017:1988 | Specification for reference wavelengths for optics and optical instruments |
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