Precision λ/4 front surface optical mirrors: Ours is not as expensive as the λ/10 versions. Used in many scientific instruments where quality is important but the use of the λ/10 versions cannot be justified. We stock precision λ/4 front surface mirrors coated for UV, visible, NIR and IR applications.  For UV applications as small as 180nm our quality ¼ wave mirrors are covered with aluminum/ Mgf².  For visible applications, our λ/4 front surface mirrors are coated with aluminum/SiO₂, and high reflective dielectric coated 99% mirror coating.  For near infrared applications, we have a range of ¼ wave mirrors coated with dielectric 98% that works efficiently to YAG wavelength of 1064nm.  Our range of λ/4 front surface mirrors for applications in NIR and FIR mirrors are covered with protected silver that performs well in the visible and up to 2000nm in the NIR, and our protected gold painted quality ¼ wave mirrors work from 750nm NIR into far infrared applications.

Guaranteed 1λ over 25mm front surface mirrors: Our range of 1λ over 25mm front surface mirrors are less expensive than a ¼ wave and 10th wave mirrors but still achieve reasonable results in demanding applications.  These cost effective one wave mirrors are available in UV/ aluminum, enhanced aluminum and dielectric 99% coating for use in the visible. These one wave mirrors are typically are usually used in more demanding imaging applications where image quality is important.  Our range of  1 wave front surface mirror (first surface mirrors) are selected for guaranteed flatness of 1 wave over 25mm aperture and individually tested to ensure they meet specification.  They are manufactured from standard pre-coated sheet material.  We stock this range from UV through to infra-red to fit most scientific instrumentation applications.  Our pre-coated sheets of mirror substrates are shared as 145x100mm plates.