BS 3062:1985
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for ophthalmic lens materials
Hardcopy , PDF
01-07-2014
English
28-02-1985
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Foreword
Committees responsible
Specification
1 Scope
2 Designation
3 Category of material
4 Refractive index and constringence
5 Other properties of ophthalmic materials
6 Freedom from visible defects
7 Flammability
8 Information to be provided by the supplier
Appendices
A Method for determination of refractive index and
constringence
B Method for determination of yellowness index and
absorptivity of white materials
C Method for determination of luminous transmittance
of all ophthalmic materials and fatigue of
photochromic materials
D Method for determination of solar infra-red
transmittance
E Method for determination of internal quality
F Method for assessment of flammability
G Bibliography
Tables
1 Refractive property tolerances
2 Spectral irradiance E lambda for the infra-red
spectral range
Figure
1 Spectral transmittance of heat-absorbing filter
Three categories of white or tinted materials, namely, ophthalmic glass, hard resin and thermoplastics, used for the manufacture of ophthalmic spectacle lenses. Does not cover contact lens materials.
| Committee |
CH/172
|
| DevelopmentNote |
Supersedes 84/65629 DC, 86/63353 DC and BS 3062(1970) (07/2005) Inactive for the new design. (01/2012)
|
| DocumentType |
Standard
|
| Pages |
14
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
This British Standard specifies requirements for three categories of white or tinted materials used for the manufacture of ophthalmic spectacle lenses.
This standard does not specify requirements for contact lens materials.
NOTE. The titles of the publications referred to in this standard are listed on the inside back cover.
| BS 3668:1963 | Specification for red and green filters used in ophthalmic dichromatic and dissociation tests |
| BS 7522-2:1993 | Low vision aids Specification for spectacle magnifiers and similar devices |
| 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 7394-1:1996 | Complete spectacles Specification for ready-to-wear near-vision spectacles |
| BS 7394-2:1994 | Complete spectacles Specification for prescription spectacles |
| EN ISO 8429:1996 | Optics and optical instruments - Ophthalmology - Graduated dial scale (ISO 8429:1986) |
| BS EN ISO 8429:1997 | Optics and optical instruments. Ophthalmology. Graduated dial scale |
| BS 3521-2:1991+A1:1996 | Terms relating to ophthalmic lenses and spectacle frames Glossary of terms relating to spectacle frames |
| ISO 8429:1986 | Optics and optical instruments Ophthalmology Graduated dial scale |
| ISO 7944:1998 | Optics and optical instruments — Reference wavelengths |
| BS 2782-5:Methods 530A and 530B:1976 | Methods of testing plastics. Optical and colour properties, weathering Determination of yellowness index. Determination of the colour of near-white or near-colourless materials |
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