Symbol 2950 from ISO 7000 - Title/Meaning: High protection against sunglare Function/description: On sunglasses, to identify Category 3 ""general purpose"" sunglasses with a luminous transmittance that gives high protection against sunglare.Note: Forms part of series of five symbols depicting various degrees of sunglare reduction
Additional information: 
Similar symbol has been in widespread use by the sunglass industry for some time
Own work using: iso.org/obp/graphics/grs/553cca88-a304-4898-8770-1ab59b86750a 200.png
Vectorization:  Mrmw