Windows&Mirrors   PWT can use the traditional processing and double-sided polishing , two kinds of process technology to meet the needs of customers for different precision products, processing size range between 2-600mm, has been provided optical adhesive substrate and standard template for optical factories. At the same time according to customer needs, provide a variety of mirrors with coating.   Specification： Material： Dimensional tolerance： Surface flatness： Surface quality： Parallelism： Coating： H-K9L/Fused Silica/MgF2/CaF2/BaF2/Silicon/Ge etc. +0/-0.05mm 1/10λ~1/20λ@632.8nm 10-5 1'' Customization

Protective Windows for High Energy Lasers   Protective windows are the front part of every laser-cutting and welding system and these are crucial for ensuring reliable and uninterrupted operation of laser systems. Protective windows for high-energy lasers are designed to be used as a safeguard for the more expensive optics inside the laser cutting head. They are placed as the last optics before the work piece. PWT continues to accumulate experience, combined with good substrate and high quality coating process, so that our protection window can withstand tens of thousands of watts of power is not polluted.   Specification: Wave length range： Dimension range： Surface quality： Flatness quality： Residual reflectance： LITD： 190–3000 nm 5–100mm 10-5 <λ/8 @ 632.8 nm < 0.2% >33 J/cm² @ 1064 nm, 5.4 ns, 10 Hz   主要作用： 阻挡激光加工时杂物飞溅到聚焦镜，以避免飞溅物打坏昂贵的聚焦镜头， 最终，一旦碎片开始破坏电介质涂层，就必须更换这些消耗性窗口。 应用范围： 激光焊接机、激光切割机、光纤激光切割机、激光打标机

Lenses Because of its special imaging principle, spherical lens can diverge and converge light, and is widely used in imaging, laser, microscopy, biological medicine and other fields.   PWT can provide: ◆Plano convex lens        ◆Plano-concave lens     ◆Double Convex lens ◆Double concave lens   ◆Meniscus Lens             ◆Achromatic Lens   Specification： Material： Dimensional tolerance： Surface flatness： 半径公差 光洁度： 镀膜： H-K9L/Fused Silica/CaF2/Ge/Silicon etc. +0/-0.02mm 1/4λ~1/10λ@632.8nm +/-0.5%~+/-0.1% 10-5 根据客户需求提供镀膜    

Cylindrical Lenses Cylindrical lenses focus light on a straight line rather than on a single point as spherical lenses do.Its surface is the cross section of the cylinder, focusing the image passing through it onto a straight line parallel to the surface of the lens and intersecting the plane tangent to it.The lens compresses the image in a direction perpendicular to the line, keeping it constant in a direction parallel to it.   Specification： Material： Dimensional tolerance： Surface flatness： Focal length Surface quality： Centration:： Coating: N-BK7/Fused Silica etc. +0/-0.05mm 1/4λ~1/8λ @632.8nm +/-1% 40-20 <3’ AR or upon request      

C-lens C-lens is a columnar optical microlens with radial gradient refractive index distribution. It is widely used in collimator, isolator, optical switch, collimator array and laser component. Compared with other self-focusing lenses, C-lens has many advantages, including low cost, low insertion loss, and a wide working range. PWT can provide custom-designed adhesive C-Lenses according to different customer requirements.   Specification： Material： Dimensional tolerance： Surface flatness： Surface quality： Centration:： Coating: Optical glass -0.01/-0.03mm N=3Fr 40-20 <5’ AR or upon request