First Surface Mirrors (FSM), also known as front surface mirrors, are meticulously crafted with the reflective surface applied directly to the front of the glass substrate. This unique design ensures that light reflects from the very first surface it encounters, thereby minimizing any distortion or “ghosting” effects that can occur when light passes through glass before reflecting. This makes FSM an essential component in precision optical applications where clarity and accuracy are paramount.

Our First Surface Mirrors are coated with a high-quality aluminum layer, further enhanced with a protective overcoat of either silicon monoxide (SiO) or magnesium fluoride (MgF2). This multilayer coating spans a spectrum of approximately 300nm, accommodating a 0-45 degree angle of incidence. Such specifications ensure that our mirrors deliver superior reflectivity and performance across a wide range of optical applications.

These mirrors are particularly indispensable in fields such as telescopes, periscopes, laser optics, and military & commercial simulators. They are also increasingly utilized in modern technologies like 3D scanners, where precise light manipulation is critical. At Sherlan Optics, we pride ourselves on offering custom sizes, with dimensions reaching up to nearly 1000mm, to meet the diverse needs of our clients. For tailored solutions, we invite you to contact us directly.