67-242 50mm Dia. x 250mm FL VIS-NIR Coated; UV Plano-Convex Lens VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- 250 mm
- BFL
- 245.21 mm
- R1
- 114.62 mm
Material
- Name
- Fused Silica
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.458462342053241
- λ
- 587.6 nm
- B1
- 0.6961663
- C1
- 0.00467914825849 μm2
- B2
- 0.4079426
- C2
- 0.013512063073959999 μm2
- B3
- 0.8974794
- C3
- 97.934002537921 μm2
67-242 50mm Dia. x 250mm FL VIS-NIR Coated; UV Plano-Convex Lens VIS-NIR 400-1000nm
The 67-242 is a 50mm diameter, 250mm focal length plano-convex lens, specifically designed for use within the visible to near-infrared (VIS-NIR) spectrum, spanning 400-1000nm. This lens is sourced from Edmund Optics, a reputable vendor known for their high-quality optical components.
The lens boasts a geometry characterized by a 50mm diameter, 4.24mm edge thickness, and a 7mm center thickness. The front surface has a radius of curvature (R1) of 114.62mm, resulting in a back focal length (BFL) of 245.21mm. The lens is made from fused silica (mal-1965), ensuring durability and resistance to environmental factors.
The 67-242 lens features a VIS-NIR coating, denoted as 'edm visnir0sp2002000' on both the front and back surfaces. This coating enhances the lens' performance within the VIS-NIR spectrum by reducing surface reflections and improving transmission.
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