Molded Glass Aspheric Positive Meniscus Condenser Lens – 55mm

Exceptional surplus opportunity: a large, high-quality molded glass aspheric positive meniscus condenser lens in pristine, like-new condition. Optically flawless, ready for immediate integration into professional or high-performance setups.

Key Specifications:

• Clear Aperture/Diameter: ~55 mm/ Center Thickness: ~20 mm /Edge Thickness: ~3.25 mm

• Effective Focal Length (EFL): ~40–50 mm

• Material: Premium optical crown glass (BK7) – outstanding visible transmission and thermal stability

• Design: Positive meniscus with aspheric convex surface (steeper side) for excellent spherical aberration correction and sharp on-axis performance across the full aperture

• Second Surface: Mildly concave (standard for this condenser form)

• Coating: Uncoated

• f/#: Extremely fast ~f/0.8–0.9 for maximum light collection efficiency

Performance Notes: With the strongly curved convex (aspheric) surface facing a bright source (e.g., sun or collimated light), the lens forms a sharp, round focal spot ~40–50 mm behind the concave surface – confirming superior optical quality and effective aberration control typical of high-grade aspheric meniscus condensers.

Recommended Applications:

• High-efficiency LED collimation for spotlights, flashlights, or stage lighting

• Condenser optics in projectors, illuminators, or fiber-optic systems

• Solar concentration experiments and photovoltaic testing

• Beam shaping, tight focusing, or light collection in optical benches

• Educational demonstrations of aspheric optics and aberration correction

• Custom laser systems, imaging setups, or DIY high-power illumination projects