49-561 3.18 mm Dia. Ruby Doped Sapphire Half-Ball Lenses Uncoated

The 49-561 is a 3.18 mm diameter Ruby Doped Sapphire Half-Ball Lens, uncoated, sourced from the reputable vendor, Edmund Optics. This lens, with its unique half-ball shape, is a Circular type, designed to provide superior optical performance.

The lens's geometry is meticulously crafted, with a diameter of 3.18 mm and a thickness of 1.59 mm. The inner radius is 0, and the outer radius is also 0, indicating a uniform curvature throughout. The r1 parameter, which represents the radius of curvature, is identical to the thickness, suggesting a sharply curved lens surface.

The lens is made from Al2O3 (Sapphire) material, specifically Ruby Doped, which is known for its excellent optical properties. The dopant, Ruby, enhances the lens's performance in specific wavelengths. In this case, the lens is optimized for a wavelength of 587.6 nm.

Notably, this lens does not have any coating, which means it is in its raw state. While this may limit its performance in certain applications, it can be advantageous in others where raw, uncoated lenses are preferred.

The lens's status is "Valid - in stock", according to the weblink provided, ensuring its availability for immediate use. This lens, with its unique properties and superior craftsmanship, is a valuable addition to any optical system.