• Ø1" (25.40 mm) Plano-Convex Lens
• Substrate: Vacuum-Grade Calcium Fluoride Substrate
• Uncoated for the 0.18 – 8.0 µm Wavelength Range
• Focal Length: 500 mm
• Surface Quality: 40-20 Scratch-Dig

The LA5464 uncoated Calcium Fluoride (CaF₂) Plano-Convex Lens offers high transmission from the 0.18 – 8.0 µm wavelength range. CaF₂ is commonly used for applications requiring high transmission in the infrared and ultraviolet spectral ranges. Its extremely high laser damage threshold makes it useful for use with excimer lasers. The material exhibits a low refractive index, varying from 1.35 to 1.51 within its usage range of 180 nm to 8.0 µm. Calcium fluoride is also fairly chemically inert and offers superior hardness compared to its barium fluoride, magnesium fluoride, and lithium fluoride cousins.

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
• Vacuum-Grade Calcium Fluoride
• Wavelength Range: 0.18 - 8.0 µm
• Design Wavelength: 588 nm
• Surface Quality: 40-20 Scratch-Dig
• Surface Flatness (Plano Side): ?/2
• Spherical Surface Power (Convex side): 3?/2
• Surface Irregularity: ?/2
• Centration: =3 arcmin
• Clear Aperture: >90% of Diameter
• Diameter Tolerance: +0.00 mm / -0.10 mm
• Focal Length Tolerance: ±1%
• Diameter: 1" (25.40 mm)
• f: 500 mm
• R: 216.9 mm
• t_c: 2.4 mm
• t_e: 2 mm
• f_b: 498.3 mm
• Suggested Fixed Lens Mount: LMR1