One of my suppliers is offering reduced price on 20 pairs of safety glasses
Price would be $40 by paypal , and include fees and deivery worldwide
They say these specifications be will sufficient for protection
Protection wavelength: 190-540nm, ( of course , it is protect against 445nm laser light)
O.D 4+,
VLT>60%
OD = " optical density", represent protection . The Number more larger, the protection effection more better. For example, OD4 for 445nm laser, MEANS: the laser safety glasses only allowed 1/10000 of 445nm light transmit through the laser safety glasses.
ANy Interest and thoughts please