40mm Sq x 275mm FL 14° Off-Axis Parabolic Mirror

Product Details High Quality Glass Substrate λ/4 or λ/2 Surface Accuracy Ideal for UV and Visible Applications Our High Performance Off-Axis Parabolic Mirrors feature a superior surface accuracy glass substrate, making them ideal for UV and visible applications. Unlike standard parabolic mirrors, these off-axis mirrors direct and focus incident collimated light at a specific angle, allowing unrestricted access to the focal point. Typical applications include use in Czerny-Turner and Littrow spectrometer configurations, and in general collimator and beam expander setups. High Performance Off-Axis Parabolic Mirrors have been replicated from masters which have passed stringent inspection criteria, including zonal interferometric and Foucault testing. The aspheric optical profile is holographically recorded onto the mirror substrate. Note: The bare aluminum coating on these optics is delicate and can be easily scratched. If cleaning is required, non-contact methods such as compressed air or an air-blower should be used. Specifications General Type: Off-Axis Parabolic Mirror Physical & Mechanical Properties Dimensions (mm): 40.0 x 40.0 Dimensional Tolerance (mm): +0.0/-0.2 Center Thickness CT (mm): 16.00 ±0.2 Length (mm): 40.00 Width (mm): 40.00 Clear Aperture (%): 90.00 Optical Properties Effective Focal Length EFL (mm): 279.10 Parent Focal Length PFL (mm): 275.0 Parent Focal Length Tolerance (mm): ±0.5% Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Float Glass Coating: Bare Aluminum Coating Type: Metal Coating Specification: R abs >85% @ 250 – 700nm Off-Set Angle (°): 14 Y Offset Tolerance (mm): ±2.0 Surface Accuracy: λ/4 Surface Quality: 80-50 Radius of Curvature (mm): 558.20 Regulatory Compliance Certificate of Conformance: View ×