This standard specifies the requirements, test methods, inspection rules and marking, packing, transport and storage for plano power lenses with uniform optical density.
This standard is applicable to light attenuating sunglass, light-colored sunglasses and the sunglasses for special purpose (skiing, beaching, or mountain climbing etc.), and is not applicable to lenses used for eye protection against artificial light source radiation or lenses correcting visions.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
Foreword I 1 Scope 1 2 Normative References 1 3 Terms 1 4 Classification 34 5 Requirements 4 6 Test Methods 6 7 Inspection Rules 9 8 Marking, Packing, Transport and Storage 9 Appendix A (Informative) Impact Resistance of the Spectacle Lenses 10
1 Scope
This standard specifies the requirements, test methods, inspection rules and marking, packing, transport and storage for plano power lenses with uniform optical density.
This standard is applicable to light attenuating sunglass, light-colored sunglasses and the sunglasses for special purpose (skiing, beaching, or mountain climbing etc.), and is not applicable to lenses used for eye protection against artificial light source radiation or lenses correcting visions.
2 Normative References
The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below.
Contents of QB 2457-1999
Foreword I
1 Scope 1
2 Normative References 1
3 Terms 1
4 Classification 34
5 Requirements 4
6 Test Methods 6
7 Inspection Rules 9
8 Marking, Packing, Transport and Storage 9
Appendix A (Informative) Impact Resistance of the Spectacle Lenses 10
