43-821 2.78 mm Dia. Sapphire Ball Lenses Uncoated

The 43-821 is a 2.78 mm diameter ball lens, uncoated and sourced from Edmund Optics. This lens, designed for general use, is a circular-shaped optical element with a base shape that facilitates its integration into various optical systems.

The lens's geometry is defined by its diameter, which is 2.78 mm, and its inner and outer radii, both of which are zero. This specifications indicate a symmetrical, perfectly spherical lens, ideal for applications requiring uniform refraction or reflection.

The lens is made of Sapphire (Al2O3), a high-quality material known for its excellent optical properties, including a wide transmission range and high mechanical strength. The material's refractive index at 587.6 nm is approximately 1.76, making it suitable for use in a variety of optical systems.

Notably, this lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. While this may limit its use in certain applications, it can be advantageous in others, such as where cost-effectiveness or simplicity is a priority.

The lens's vendor, Edmund Optics, has confirmed its availability, making it a readily accessible option for those in need of a 2.78 mm diameter Sapphire ball lens. For more information, including pricing and detailed specifications, users are encouraged to visit the provided weblink.