Optical mirror
Knight Optical

These precision plane mirrors are our best quality mirrors. Made in low expansion glass for optimum stability they are flat to ?/10. Our standard stock precision grade mirrors are coated with enhanced aluminium and dielectric coating for use in laser applications, however these precision grade lambda/ 10 mirrors can be supplied with any of our standard coatings and are suitable for interferometry and other demanding applications.Just some of the wide range of coatings that are available to produce your bespoke custom mirror are.
UV aluminium for use in UV applications down to 180nm.
High reflectivity 98.5% dielectric coating for laser use in the near infra-red region.
Ion plated protected silver for use in NIR to 2000nm
Protected gold coatings for use from 750nm to far infra-red applications.

Stock precision grade plane mirrors can also be edges to smaller diameters and other shapes at short notice.

Specifications:
Material: Float glass
Diameter: +0 / -0.2 mm
Length/width: ±0.1mm
Thickness: +0.1 / -0.2mm
Surface quality: <40:20 scratch/dig
Flatness:

λ/10 over 90% of mirror aperture (Rear is commercial polish)
Parallelism: <30 arcsec
Coating: Enhanced aluminium / Visible use MV1 All-dielectric 99% / Visible use MV99