Rectangular optical window

sapphire

Wedged windows are optical windows with non-parallel surfaces. This feature is designed specifically to minimize back reflection and interference impact to optical system. What is the angle of a wedge (wedge angle) ? The angle between two main substrate surfaces, causing light passing through to deviate slightly is called wedge angle. It is typically very small and is used for applications such as beam steering, optical isolation, and interference control. Calculated using the difference in thickness over a given distance, precise control of the wedge angle is crucial for accurate optical performance. Wedged substrates for laser optics Wedges reduce ghost reflections and interference, when used as substrates for partial reflectors (cavity output couplers) as the reflection from back surface is reflected in slightly different direction. In other close-to-normal incidence angle beamsplitters (e.g dichroic mirrors), the wedged backsurface helps in similar way. Wedged Windows for astronomical telescopes Chromatic aberration in telescopes can be corrected by slightly diverging light paths using Alien Photonics wedged windows (optical wedges). This elimination improves image clarity, color accuracy in telescopes and astrophotography cameras. Optical wedges for beam steering devices Wedged windows redirect laser beams in beam steering systems. This leads to accurate alignment and positioning. Wedged windows for imaging sensors By adjusting the angle of incoming light, wedged windows (optical wedges) correct parallax errors and improve image alignment in imaging and observation devices.