Specification Brand : Q-BAIHE BulletPoint1 : Specification: Φ12 BulletPoint2 : Focal length: 50.8MM BulletPoint3 : Edge thickness: 2MM BulletPoint4 : Material: ZnSe BulletPoint5 : Widely used in laser processing, laser engraving machine, laser engraving machine, laser marking machine, laser cutting machine ItemName : Lmport Focusing Lens (Ф12) Laser Lens/Reflective Lens/Engraving Machine Lens ItemPackageQuantity : 1 ItemTypeKeyword : diode-lasers Manufacturer : Q-BAIHE ModelNumber : Znse-12-2-50*8 PartNumber : Znse-12-2-50*8 ProductDescription : Parameter: Specification: Φ12 Focal length: 50.8MM (Universal type) Edge thickness: 2MM Material: ZnSe The ZnSe-II-VI compound belongs to wide bandgap materials and is a yellow transparent polycrystalline material belonging to long-wavelength infrared transmissive material, usually having a transmittance of about 71.6% after 1 μm. Crystal particle size: about 70μm, Light transmission range: 0.5-15μm, Melting point: 1520°C. The refractive index is 2.408, The transmission range is from 0.45μm to 20μm application: CO2 laser focusing lens is widely used in laser processing. It is an indispensable accessory for laser engraving machine, laser engraving machine, laser marking machine and laser cutting machine. note: When installing the focusing lens, the concave surface faces the working (cutting) material surface, and the focal distance should be the distance from the cutting surface to the lens (the focal point of the light emitted is the focal point). Package: 1 x Lmport Focusing Lens (Ф12) Laser Lens/Reflective Lens/Engraving Machine Lens ProductSiteLaunchDate : 2018-06-05T07:00:00.000Z UnspscCode : 43191600