เลนส์กระจก 405 nm Laser Diode 3 ชั้น

Specification: Brand new Color: black Lens Material: glass Lens Size: approx. 7mm Thread type: full thread Focus length: approx. 8mm Metal Frame: Screw Size M9 * 0.5 This is triple glazing focus lens, for all kinds of blue-violet / blue laser products Attention: Do not touch the surface of the lens directly with your hands, do not let the lens surface in direct contact with a hard object, so as not to scratch the surface, using a process typically used plastic forceps. Before carrying on some laser DIY activities, please read about the technical information first and protect your eyes before laser ray. Package included: 1 x coated glass lens