49-921 20.0mm Dia. x 25.0mm FL; VIS-NIR Coated; Plano-Convex Lens VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 25 mm
- BFL
- 22.76 mm
- R1
- 19.62 mm
Material
- Name
- N-SF11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7847141030246312
- λ
- 587.6 nm
- B1
- 1.73759695
- C1
- 0.013188707 μm2
- B2
- 0.313747346
- C2
- 0.0623068142 μm2
- B3
- 1.89878101
- C3
- 155.23629 μm2
49-921 20.0mm Dia. x 25.0mm FL; VIS-NIR Coated; Plano-Convex Lens VIS-NIR 400-1000nm
This product is a Plano-Convex Lens, sourced from the renowned optical vendor, Edmund Optics. The lens, identified as item number 49-921, boasts a diameter of 20.0mm and a focal length of 25.0mm, making it a compact yet powerful optical component.
The lens is crafted from n-sf11 Schott, a high-quality optical material known for its excellent transmission properties across a wide spectrum. This particular lens is designed to transmit light within the Visible to Near-Infrared range, specifically between 400-1000nm, making it suitable for a broad range of applications.
The lens features a Plano-Convex geometry, where one side is flat (Plano) and the other side is curved (Convex). The curvature of the lens is defined by a radius of 19.62mm, and it has a back focal length of 22.76mm. The edge thickness of the lens is 1.26mm, while the center thickness is 4mm, providing a robust structure for various optical setups.
The lens is further enhanced with a VIS-NIR coating, denoted as 'edm visnir0sp2002000' on both the front and back surfaces. This coating is specifically designed to optimize the lens' performance within the Visible to Near-Infrared range, reducing surface reflections and improving overall transmission.
