Super Hardness Thin Spherical Lens 300mm Visible Circular Glass Window
Sapphire Crystal 5-300mm Visible Super hardness Sapphire Circular Windows
Sapphire Windows plate is a flat plate with two parallel or wedge-shaped faces, usually used as a protective window for an electronic sensor or a detector of the external environment.
Window slices do not change the magnification of the system.
The base materials include all kinds of sapphire, optical glass, K9, UV fused quartz, infrared fused quartz and crystal materials such as calcium fluoride (CaF2), magnesium fluoride (MgF2), zinc selenide (ZnSe), germanium (Ge), silicon (Si), and provide anti-reflection film, high reflective film, splitting film, metal film and other optical coatings.
Broadband antireflection film can be used in ultraviolet, visible, near infrared and mid-infrared bands.
Sapphire window plate is a flat polishing product processed based on single crystal sapphire. Sapphire protective window plate is a special window plate used to protect the observer, the inside of the instrument and the inside of the container by using the pressure resistance, wear resistance and high temperature resistance of sapphire.
Single crystal sapphire window plates are ideal for demanding applications such as laser systems because of their extremely high surface hardness, high thermal conductivity, high dielectric constant, and resistance to chemical acids and bases.
Because sapphire is second only to diamond in hardness, and its structural strength is very high, so the thickness of sapphire window plate made by enhanced light transmittance is thinner than that of ordinary high dielectric window plate.
Chemically, sapphire is single-crystal aluminum oxide (Al2O3), well suited for transport between 0.2 and 5.5μm.
In general optical applications, basic customer needs can be met without coating.
Our products can also be coated, screen printing or special heat treatment according to customer needs, to meet the special needs of customers.
High surface hardness and chemical resistance
Can transmit the wavelength between UV and mid-infrared
It is thinner and stronger than standard glass window sheets
Product shape is divided into: round, rectangular, step shape and a variety of processing shape.
Product size range: diameter (maximum diagonal) 10-500mm, thickness 0.3-100mm.
Product finish after polishing: 80/50, 60/40, 40/20, 20/10, 10/5 optional (US military standard).
Surface flatness (face type) : up to 1/10λ.
Coating parameters
Processing capacity
| Material | Sapphire (Al2O3) |
| Abbe Number (vd) |
72.24 |
| Axis Orientation | Random |
| Birefringence (no-ne) | 0.008 for Visible Light Orthogonal to Optical Axis |
| Clear Aperture (%) | ≥90 |
| Coefficient of Thermal Expansion CTE (10-6/°C) | 8.8 |
| Density (g/cm3) | 3.97 |
| Index of Refraction nd | 1.77 |
| Knoop Hardness (kg/mm2) | 1900 |
| Parallelism (arcmin) | ≤3.5 |
| Surface Flatness | 2λ (typical) |
| Surface Quality | 80-50 |
| Surface Roughness (μm) | 0.1 per Inch |
| Young's Modulus (GPa) | 435 |
Packing Details :Use Good and Strong Cartons to pack
We offer more transportation options
FAQ
Q: What are your main products?
A: Optical lens,mirrors,windows,filters,prisms
Q: How long is your delivery time?
A: In general delivery time is about one month for custom produced optics.except stock ones or some special optics.
Q: Do you provide samples ? is it free or extra ?
A: We can provide free samples if we have stock optics as your request,while custom produced samples are not free.
Q:What is your MOQ ?
MOQ is 10pcs for most of the optics, while MOQ could be only one piece if you need a element in big dimention.
Q: What is your terms of payment ?
T/T,L/C,VISA,Paypal,Alipay or Negotiation.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.