69-338 12.0mm Dia. x 20.0mm FL; Plano-Convex Lens Laser V-Coat 405nm
- 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)
- 1.5301959309359068
- λ
- 405 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
69-338 12.0mm Dia. x 20.0mm FL; Plano-Convex Lens Laser V-Coat 405nm
The 69-338 is a Plano-Convex spherical lens, sourced from Edmund Optics, with a diameter of 12.0mm and a focal length of 20.0mm. This lens is designed for use with a wavelength of 405nm, making it suitable for applications such as laser systems and bio-imaging.
The lens is made from n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence. This makes it an ideal choice for applications that require high light transmission and low background noise.
The lens features a laser-optimized V-coat coating on both the front and back surfaces. This coating is specifically designed to enhance the performance of laser systems by reducing reflection and increasing transmission. The coating has a reflectance of less than 0.5% at 405nm, ensuring optimal light transmission and minimal loss.
The lens has a thickness of 1.58mm at the edge and 3.5mm at the center. The inner radius is 0mm, and the outer radius is also 0mm, indicating a uniform curvature. The back focal length (BFL) is 17.69mm, and the effective focal length (EFL) is 20mm.