LE4950 25.4 mm Dia. UVFS Positive Meniscus Lens; EFL=1000mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 1000 mm
- BFL
- 998 mm
- R1
- 348 mm
- R2
- 1425.7 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.458448271212196
- λ
- 588 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
LE4950 25.4 mm Dia. UVFS Positive Meniscus Lens; EFL=1000mm Uncoated
The LE4950 is a spherical lens from Thorlabs, featuring a convex-concave design with a base shape of a circle. This lens has a diameter of 25.4 mm and a thickness at the edge of 2 mm, while the center thickness is slightly greater at 2.2 mm. The effective focal length (EFL) of this lens is 1000mm, making it suitable for applications that require long-focus lenses.
The lens is made from UVFS material with the ID MAL-1965. It is designed to work with a wavelength of 588 nm. The lens's geometry includes an inner radius of 0 and an outer radius of 0, which, combined with its spherical shape, contributes to its focusing capabilities.
Notably, this lens does not come with any coating, as indicated by the empty 'coating' field in the item data. This may affect its performance in certain applications, particularly those involving high-intensity light sources or specific wavelength ranges. Therefore, users should consider this factor when deciding whether the LE4950 is suitable for their needs.
