{"product_id":"laser-collimating-focus-lens-d20x4-5-f150-f200-f800-for-fiber-laser-welding-head","title":"Laser Collimating Focus Lens D20x4.5 F150\/F200\/F800 for Fiber Laser Welding Head","description":"\u003cp\u003eLaser Welding Focus\u0026amp;Collimator Lens\u003c\/p\u003e\n\u003cp\u003eTransmittance: \u0026gt;99.76%,Wavelength: 1064nm(900-1100nm)\u003c\/p\u003e\n\u003cp\u003eApplication for SUP 20S\/T,21T,23S\/T,SW150 Handheld Laser Welding Gun\u003c\/p\u003e\n\u003cp\u003eBoth sides of the lens are coated with anti reflective films with high damage thresholds, effectively reducing losses caused by reflection\u003c\/p\u003e\n\u003cp\u003eAccurately focus the laser beam into an extremely small spot, so that the energy is highly concentrated in the welding area\u003c\/p\u003e\n\u003cp\u003eAppropriate focusing range can ensure the stability of welding quality within a certain thickness range\u003c\/p\u003e\n\u003cp style=\"margin:0;padding:0;line-height:0;\"\u003e\u003cimg 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