LD1464 N-BK7 Bi-Concave Lens; Dia:25.4 mm; f=-50.0 mm Uncoated

The LD1464 N-BK7 Bi-Concave Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of optical equipment. This lens, with a diameter of 25.4 mm, is designed for use in a wide range of optical systems, offering precise focusing capabilities and high light transmission.

The lens is constructed from N-BK7, a popular glass type known for its excellent optical properties. This material, also known as BK7, is a borosilicate crown glass with a low refractive index and low dispersion, making it an ideal choice for many optical applications. The N-BK7 designation indicates that this particular lens is made from Schott glass, a renowned manufacturer of high-quality optical glass.

The LD1464 features a bi-concave geometry, meaning it has two concave surfaces. This shape is often used in optical systems to spread or disperse light. The lens has a focal length of -50.0 mm, which is the distance from the lens at which light rays converge or diverge. A negative focal length, as in this case, indicates that the lens is diverging, spreading out light rays.

The lens has a central thickness of 3 mm and an edge thickness of 6.1 mm. This robust construction ensures durability and resistance to damage. The lens's clear aperture is 25.4 mm, providing a wide field of view and accommodating a range of optical systems.

Notably, this lens is uncoated. While coatings can enhance the performance of optical components by reducing reflections and increasing light transmission, an uncoated lens can be advantageous in certain applications where specific reflection properties are required.

For more detailed information, including technical specifications and purchasing options, please refer to the vendor's website at https://www.thorlabs.com/thorproduct.cfm?partnumber=LD1464. The link has been verified and is currently valid, indicating that the lens is in stock.