This is a 10 mm diameter Plano-Concave lens, manufactured by Qioptiq Photonics, a renowned provider of precision optics. The lens is made of N-BK7, a popular borosilicate glass known for its excellent optical properties and durability. The lens features a negative focal length (EFL) of -16mm, making it suitable for applications that require light convergence or divergence.
The lens is coated with Qio Bbar Arb2nirnbk7 on both the front and back surfaces. This anti-reflection coating enhances the lens's performance by reducing unwanted reflections and increasing transmission in the spectral range of 725-1050nm. The lens's geometry is spherical, with a center thickness of 1.5mm, an inner radius of 0mm, and an outer radius of 0mm.
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