69-489 12.0mm Dia. x 30.0mm FL; Plano-Convex Lens Laser V-Coat 785nm

The 69-489 is a Plano-Convex spherical lens, sourced from Edmund Optics, with a diameter of 12.0mm and a focal length of 30.0mm. This lens is designed for use with a wavelength of 785nm, making it suitable for a range of applications in the near-infrared spectrum.

The lens is fabricated from N-BK7 Schott glass, a popular choice for its high homogeneity, low auto-fluorescence, and excellent transmittance in the visible and near-infrared regions. The Plano-Convex geometry, where one surface is flat and the other is curved, is ideal for collimating or focusing light.

The 69-489 features a laser-grade V-coat coating on both the front and back surfaces. This coating enhances the lens's performance in laser applications by reducing reflection and increasing transmission. The coating is designed specifically for a 785nm wavelength, ensuring optimal performance in its intended use.

The lens has a central thickness of 3.0mm and an edge thickness of 1.79mm, providing a robust structure while maintaining a low profile. The inner and outer radii are 0mm, indicating a uniform curvature across the lens surface.