LC1259 N-BK7 Plano-Concave Lens; Dia:25 mm; f=-50.0 mm Uncoated

The LC1259 N-BK7 Plano-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 mm, is designed for use in a variety of optical systems, particularly those requiring concave lenses.

The lens is made from N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is often used in high-precision applications due to its low coefficient of thermal expansion and high homogeneity. The N-BK7 designation refers to the specific type of glass used, which is manufactured by Schott, a renowned glass manufacturer.

The lens features a focal length of -50.0 mm, indicating its concave shape. The negative focal length is a characteristic of concave lenses, which cause light to diverge. This can be useful in a variety of applications, such as beam expansion or collimation.

The lens has a central thickness of 3.5 mm and an edge thickness of 6.7 mm. This asymmetry is due to the concave shape of the lens. The edge thickness is greater than the center thickness, which helps to maintain the lens's structural integrity.

The lens is uncoated, meaning it does not have any additional layers applied to its surface to alter its optical properties. This can be beneficial in certain applications where a specific coating is not required or desired.

According to the vendor's website, this lens is currently in stock, indicating its availability for immediate purchase and use. The website also provides further technical specifications and application notes for this lens, which can be valuable resources for those considering its use in their optical systems.