BS 7394-2:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Complete spectacles Specification for prescription spectacles
Hardcopy , PDF
31-08-2007
English
15-05-1994
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Committees responsible
Foreword
Specification
1 Scope
2 References
3 Definitions
4 Lens characteristics
5 Frame characteristics
6 Mechanical characteristics
7 Marking and instructions for use
Annexes
A (informative) Recommendations on the design of
prescription spectacles
B (informative) Recommendations on glazing and
optical quality
C (normative) Determination of LTF
D (normative) Classification of lenses
E (normative) Lens retention test
F (normative) Test for break resistant lenses
G (normative) Test for lenses of increased robustness
Tables
1 Classification of enhanced robustness
D.1 Classification of refractive index
D.2 Classification by constringence
D.3 Classification of photochromic lenses
D.4 Classification by UV absorption
Figures
B.1 Recommended system for visually inspecting a lens
for defects
E.1 Test lever
E.2 Location of the test lever on the test specimen
F.1 Holding device for break resistance and increased
robustness tests
List of references
Specifies frames, prescription lenses and their incorporation as complete spectacles. Excludes ready-to-wear spectacles and protection spectacles.
| Committee |
CH/172
|
| DevelopmentNote |
Supersedes 92/51515 DC (10/2005)
|
| DocumentType |
Standard
|
| Pages |
16
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| BS 3521-1:1991 | Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to ophthalmic lenses |
| BS 2738-1:1998 | Spectacle lenses Specification for tolerances on optical properties of mounted spectacle lenses |
| BS 3521-2:1991+A1:1996 | Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to spectacle frames |
| BS 2738-1:1989 | Spectacle lenses Specification for tolerances on optical properties of mounted spectacle lenses |
| BS 3062:1985 | Specification for ophthalmic lens materials |
| EN 168:2001 | Personal eye-protection - Non-optical test methods |
| BS 3521-2:1991+A1:1996 | Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to spectacle frames |
| 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 3521-1:1991 | Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to ophthalmic lenses |
| BS 2738-3:1991 | Spectacle lenses Specification for the presentation of prescriptions and prescription orders for ophthalmic 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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