• Ø1" (25.40 mm) Plano-Convex Spherical Singlet Lenses
• Material: Silicon Substrate
• Broadband AR-Coating for the 3 – 5 µm Range
• Focal Length: 500 mm
• Surface Quality: 60-40 Scratch-Dig

The LA8023-E Silicon (Si) Plano-Convex Lens has an AR coating deposited on both surfaces. The measured transmission over the coating range (3 – 5 µm) is greater than 97%, and the average reflectance is less than 1.5%. Silicon offers high thermal conductivity and low density. However, since it has a strong absorption band at 9 microns, it is not suitable for use with CO₂ laser transmission applications.

Plano-convex lenses focus a collimated beam to the back focus and collimate light from a point source. This lens has a positive focal length and near-best-form shape for infinite and finite conjugate applications.

• Lens Shape: Plano / Convex
• Material: Silicon
• Wavelength Range: 1.2 – 8.0 µm
• AR Coating Range: 3 – 5 µm
• Reflectance over Coating Range (Avg.): <1.5%
• Design Wavelength: 4 µm
• Surface Quality: 60-40 Scratch-Dig
• Surface Flatness (Plano Side): λ/2
• Spherical Surface Power (Convex side): 3λ/2
• Surface Irregularity: λ/2
• Centration: ≤3 arcmin
• Clear Aperture: 80% of Diameter
• Thickness Tolerance: ±0.2 mm
• Diameter Tolerance: +0.00/-0.10
• Focal Length Tolerance: ±1%
• Diameter: 1" (25.40 mm)
• f: 500 mm
• R: 1212.7 mm
• t_c: 2.1 mm
• t_e: 2 mm
• f_b: 499.4 mm
• Suggested Fixed Lens Mount: LMR1