BK7, K9, CaF2, ZnSe, MgF2, Sapphire, Fused Silicon Optical window

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Price in USD:
Price:$12.00 - $20.00


Product Overview


Optical windows

You are here:  BK7, K9, CaF2, ZnSe, MgF2, Sapphire, Fused Silicon Optical window

An Optical Window is an optically flat. These regular windows are applied to isolate different physical environments while allowing light pass. When selecting windows,please consider materials, transmission, scattering, parallelism and resistance to certain environment. It can be widely used on laser technology, IR detector and imaging technology etc.

Worldhawk offers standard and high precision optical glass windows in round ,rectangular, wedge windows and custom shape and size with different optical glasses,Fused Silica, Sapphire, ZnSe, Zns and IR crystal. The high precision parallelism of 10 arc seconds, surface quality of 10/5 and flatness of λ/20. Single layer or multi-layer anti-reflection coatings are available.

1: The wavelength of worldhawk general windows substrate(without coating) 

Wavelength -- worldhawk com

2: Materials characteristic

 B270CaF2GeMgF2N-BK7SapphireSiUV Fused SilicaZnSe ZnS
Refractive index (nd)1.5231.4344.0031.4131.5171.7683.4221.4582.4032.631
Coefficient of dispersion (Vd)58.595.1N/A106.264.272.2N/A67.7N/AN/A
Soften Temperature(℃)53380093612555572000150010002501525

Knoop hardness



3: Optical windows

optical windows by worldhawk com

4Worldhawk supply you professional customized service

   a: Dimesion size : 0.2-300mm , thickness >0.1mm
   b: Many material could be choiced , include IR material like Ge, Si, Znse, fluoride and so on
   c: AR coating or as your request
   d: Product shape : round , rectangle or custom shape

5:Windows general specifications

Diameter 0.2-300mm
Diameter tolerance +/-0.1mm or +/-0.02mm
Thickness 0.10-100mm
Thickness tolerance ± 0.1mm or +/-0.02mm
Surface quality (scratch & dig) 60/40, 40/20 or better
Surface accuracy λ/10, λ/2, λ
Clear Aperture >85%, >90%
Parallelism +/-3' ,+/-30''
Bevel 0.1~0.3mm×45 degree
coating AR, BBAR or upon customer request( UV, VIS, IR)

6:Sapphire Windows

Custom Shaped Sapphire Windows 

Testing / Production



+ Inspection

Advanced testing equipment and methods are important guarantee for the production of high-precision products.




+ Our Factory

Advanced processing equipment and complete production system are ensure that we can effectively control every aspect of the product process to ensure product quality, and reduce losses and reduce costs!


Our factory.jpg



Company / Catalogue



+ Company


Changchun Worldhawk Optoelectronics Co., Ltd, established in 2010 in China Optical City - Changchun, we have three branches in Changchun, Nanjing and Hong Kong.

Worldhawk is the professional supplier for the optical products with much experience in optics design, research and development, manufacturing and export. We have many experienced engineers and many skilled workers, they are the important guarantee for the higher quality products. We can ensure higher qualified rate because of the precision testing equipment.

We can provide all kinds of optical products processing, coating service, assembling the lens and high-altitude monitoring quipment and so on. We consider our customer relationship to be a valuable asset, We understand that your application is not standard and so we offer customization of all of our products.


Please click on the links below for more information: 

+ Spherical Lens+ Sapphire Customized
+ Optical Prism + Optical Powell Lens 
+ Cylindrical Lens+ Optical Windows
+ Optical Reflecting Mirror+ Optical Ball lens
+ Optical Bandpass Filter+ Optical Dome




optical dome powell lens.jpg



Payment / Shipping



QWhat's the way of shipping and cost?


(1) We accept DHL, Fedex, TNT, UPS, EMS, SF and etc.

(2) If you have your own express number, it's great.

(3) Freight=USD35.0(the first weight) + USD12.0/kg


Q: How to pay?


(1) T/T, PayPal, West Union, MoneyGram and

Assurance payment on Alibaba and etc..

(2) Bank Fee: West Union-USD30.00(≤USD3000.00),

T/T-USD20.00+, PayPal-5%. Please consult the local bank.


Q: What's the deliver time?


(1) For inventory: the delivery time is 5 workdays. 
(2) For customized products: the delivery time is 7 to 25 workdays. According to the quantity.

Q: How to ensure the safety of payment?


A: Worldhawk is the gold supplier for 7 years and supports Alibaba Trade Assurance. 

Trade Assurance Limit: > US $300,000


Q: Can I customize the products based on my need?


Yes, we can customize the material, specifications and optical coating for your optical components based on your needs.


Express company.jpg



+ We try to finish each detail in production and service in order to being the worthy cooperative partner of clients.






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