Features, Uses & Benefits of Optical Windows
There are different kinds of windows used for different purposes. For instance, the IR window allows for viewing electrical switchgear through safe ports. The laser window provides a safe and observable surface through which to view a laser or laser system.
Optical Windows are formed with two flat and polished surfaces that are optically transparent and intended to separate, seal, or otherwise protect other components. They are designed to maximize transmission in a particularly given wavelength range and minimizing reflection and absorption. These windows are made from a wide variety of Optical Windows made from materials like N-BK7, Fused Silica, Sapphire, Germanium, Zinc Selenide, Calcium Fluoride, and Magnesium Fluoride. These windows are primarily used to safeguard electronic and optical systems from the hazards of the outside environment. Also, these windows are available in multiple anti-reflection coating options are available for the ultraviolet UV Window, visible, or Infrared (IR).
Silicon window has an advantage over other IR materials due to its low density making it ideal for optical systems, where weight is an important factor.
Custom made Silicon Windows are made using silicon and other materials. It is used as an optical window primarily in the 3 to 5-micron band and as a substrate for the production of optical filters. It is used for a variety of applications such as amplifier slabs, discs, rods, debris shields, reference surfaces, and intelligence surface and reconnaissance. Sapphire window is characterized by high-hardness, abrasion resistance, excellent chemical resistance and heat resistance and capacity to transmit ranging from UV to mid-infrared.
When you are selecting the optical window, you need to consider factors like material transmission properties, optical surface specifications, and the mechanical properties that match your application. Besides, the hardness of the optical window substrate can be critical for deciding which window is the suits best to your application. You also need to consider other key properties for selecting the appropriate window for your application include the index of refraction, Abbe number, density, and coefficient of thermal expansion. Most manufacturers provide windows available in a vast range of material or as custom-made optics.
