49-961 20mm Dia. x 40mm FL Uncoated; UV Plano-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 40 mm
- BFL
- 36.92 mm
- R1
- 18.34 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
49-961 20mm Dia. x 40mm FL Uncoated; UV Plano-Convex Lens
The 49-961 is a 20mm diameter, 40mm focal length Plano-Convex lens, uncoated and optimized for UV light at a wavelength of 587.6nm. This lens is sourced from Edmund Optics, a leading vendor in the optical industry, and is available for immediate purchase from their website.
The lens is designed with a spherical shape, featuring a plano surface on one side and a convex surface on the other. The convex surface has a radius of curvature of 18.34mm, resulting in a back focal length of 36.92mm. The lens's edge thickness measures 1.53mm, while the center thickness is 4.5mm, providing a solid and robust structure.
The lens is made of fused silica (mal-1965), a high-quality material known for its excellent transparency and resistance to thermal shock. This makes the lens suitable for various applications, including UV imaging, spectroscopy, and beam shaping.
Notably, the lens is uncoated, meaning it does not have any anti-reflective or protective coatings. While this may result in a higher reflectivity, it also means the lens is more cost-effective and versatile, as it can be used in a wide range of environments without the risk of coating damage.
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