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Optical borosilicate glass of the system sio deep 2 - b deep 2 o deep 3 - bao - pbo - la deep 2 o deep 3 with v depth d = 1,68 to 1,72 and v depth d = 43 to 48
Optical borosilicate glass of the system sio deep 2 - b deep 2 o deep 3 - bao - pbo - la deep 2 o deep 3 with v depth d = 1,68 to 1,72 and v depth d = 43 to 48
