This is a Plano-Concave Spherical Lens, type HO-PVL25-02B, with a diameter of 25mm. The lens is sourced from the reputable vendor Holmarc Opto-Mechatronics. The lens's base shape is circular, and it features a center thickness of 2.5mm. The effective focal length (EFL) of this lens is -50mm, indicating its diverging nature.
The lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties. The wavelength for this lens is 587.6nm. The lens's geometry includes an inner radius of 0mm and an outer radius of 0mm, further emphasizing its Plano-Concave structure.
The lens is coated with BBAR (Broadband Anti-Reflection) coating, which enhances its performance by reducing reflection losses. The BBAR coating is applied on both the front and back surfaces of the lens, ensuring optimal performance across the spectral range of 400-700nm.
This lens is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website at https://www.holmarc.com/plano_concave_lenses.php.