Standard Specifications for Replicated Aspheric Mirrors

Replicated aspheric mirrors will typically exhibit the optical properties and specification of the master from which they are produced providing a suitable substrate is used for the replication process.

Elliptical Mirrors

• To 100mm (4 inch) diameter as standard (larger custom sizes available)
• Substrates: Glass or Metal
• Surface Quality: 1λ or better
• Surface Roughness: 100Å RMS
• Reflectivity: >80% R @ 200nm
• Coatings: Al, Au, Ag (enhanced or protective overcoats available)

Parabolic & Off-axis Parabolic Mirrors

• To 300mm (12 inch) diameter as standard (larger custom sizes available)
• Substrates: Glass or Metal
• Surface Quality: typically up to λ/10
• Scratch/Dig: 60:40
• Reflectivity: >80% R @ 200nm
• Coatings: Al, Au, Ag (enhanced or protective overcoats available)

Thermal distortion in replicated mirrors is generally insignificant unless the mirror has a very high surface finish (λ/20 or better) or the substrate is very thin or lightweight.

Replicated optics can be used under nearly all environmental conditions that conventional optics can be used in without loss or degradation of performance. They have been industry qualified for both Space Flight and Telecommunications use (Telcordia standards).

Replicated optics have been used successfully for over 20 years. They are used in some of the most demanding applications such as space-borne instruments and laboratory instrumentation where they have operated with no decrease in performance for many years. Replication is an established technique used to manufacture very high precision optics in areas including interferometry, analytical instrumentation and telecommunications amongst others.