69-488 12.0mm Dia. x 20.0mm FL; Plano-Convex Lens Laser V-Coat 785nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 20 mm
- BFL
- 17.69 mm
- R1
- 10.34 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5110795649082278
- λ
- 785 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
69-488 12.0mm Dia. x 20.0mm FL; Plano-Convex Lens Laser V-Coat 785nm
The 69-488 is a Plano-Convex Spherical Lens, 12.0mm in diameter and featuring a 20.0mm focal length, specifically designed for use with a 785nm wavelength. This lens is sourced from Edmund Optics, a renowned vendor in the optical industry.
The lens is made from n-BK7 Schott, a high-grade optical glass known for its excellent transparency and homogeneity. The Plano-Convex geometry, where one side is flat and the other curved, allows for efficient light gathering and focusing. The lens has a 1.58mm edge thickness and a 3.5mm center thickness, providing robustness and stability.
The lens features a V-coat coating on both the front and back surfaces, specifically designed for 785nm. This coating enhances the lens's performance by reducing surface reflections and increasing transmission, making it ideal for laser applications.
The lens's geometry includes a 10.34mm radius of curvature on the curved side and a 17.69mm back focal length. The lens has no inner or outer radius, indicating a uniform thickness across the lens.