Description
Spherical Mirrors – Apochromatic Focusing & Collimation for Precision Optics
Description:
Spherical Mirrors are reflective optical elements with a spherical surface profile, which focus or collimate light without introducing chromatic aberration (a critical advantage over refractive lenses). They are widely used in systems requiring broadband wavelength performance, such as telescopes, laser resonators, and interferometers, where color correction is challenging with lenses.
Materials:
BK7 / Borosilicate Glass: Low cost, good thermal stability for general applications
Fused Silica: Ultra-low thermal expansion, high laser damage threshold, ideal for high-power lasers and precision metrology
Zerodur® / ULE: Near-zero thermal expansion for ultra-stable astronomical and laboratory instruments
Key Parameters:
Diameter: 10mm – 300mm (custom sizes up to 500mm available)
Radius of Curvature (ROC): Customizable from 10mm to 5000mm
Surface Quality: 60/40 (commercial), 40/20 (precision), 20/10 (high precision), 10/5 (ultra-precision)
Surface Figure (Power): λ/4 @ 633nm (standard), λ/10 @ 633nm (precision), λ/20 @ 633nm (ultra-precision)
Coating Options:
Protected Aluminum (Al): Broadband reflectivity (UV-VIS-NIR)
Protected Silver (Ag): High reflectivity in VIS-NIR
Protected Gold (Au): High reflectivity in NIR-MIR
Dielectric HR coating: Custom wavelength high reflectivity (>99%) with high LIDT
Applications:
Astronomical telescopes & observatory instruments
Laser cavities & fiber laser systems
Interferometers & optical metrology tools
Infrared imaging systems & thermal cameras
Spectrometers & monochromators
Customization:
We produce custom spherical mirrors with precise ROC, surface figure, and coating specifications. We also offer custom mounting features (holes, slots, bevels) for easy integration into optical systems.
