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Knight Optical(UK) Ltd - - +44 (0)1622 859444

Elliptical mirrors

What are you looking for in Stock?

Elliptical mirrors are typically used at 45° where a circular cross section of a given size is asked for. Our stock range of elliptical mirrors are machined from standard sheets of enhanced aluminium giving 94% reflectivity for visible applications. Generally elliptical mirrors are used as secondary mirrors in Newton telescopes or mounting in a tube where maximum aperture is required such as in perescopes.

Our stock mirrors have a guarenteed flatness of 1λ over 25mm. Where greater precision is required we offer elliptical mirrors with flatness better than λ/10 as a custom option. We also stock a range of standard front surface mirrors sheets for use in UV/ NIR and IR applications these can be cut and edged into elliptical mirrors at short notice.

For more information on our stock elliptical mirrors, to place an order or to find out more about our custom capabilities please contact our technical sales team.

Material: Soda lime float glass
Diameter (minor-axis): +0 / -0.2 mm
Diameter (major-axis): +0/ -0.4 mm
Thickness: ±0.15
Surface quality:  <60-40 scratch/dig
Flatness:  1λ over 25mm dia. test area
Parallelism:  <3 arcmin

Enhanced aluminium/ visible use (MV1)
Ali/SiO₂ R.avg>94%@450-650nm, AOI=0°-45°

  • We stock a range of front surface mirrors from UV aluminium to protected gold that can be edged to custom elliptical mirrors at short notice
  • Improved tolerances and flatness greater than λ/10
  • Mounting options including custom assemblies

Stock Optics

Get a Custom Quote

Part No. Wavelength range (nm)CoatingMinor axis
Major axis
MLG0700 450-650Enh/Ali (94% visible)79.93 £15.00
MLG1300 450-650Enh/Ali (94% visible)12.717.963 £15.00
MLG2200 450-650Enh/Ali (94% visible)22.231.43 £18.00
MLG2201 450-650Enh/Ali (94% visible)22.231.46 £23.00
MLG2500 450-650Enh/Ali (94% visible)2535.363 £20.00
MLG4000 450-650Enh/Ali (94% visible)4056.573 £30.00

Get a Custom Quote

Get in touch

Our Multi-Lingual Sales Team are here to help with your requirments:

UK +44 (0)1622 859444
UK +44 (0)1622 850614
UK +44 (0)1622 851078
+1 401 583 7846

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