SBC019 25.4 mm Dia. x -250 mm FL; Uncoated; Double-Concave Lens
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- MKS/Newport
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -250 mm
- BFL
- -250.85 mm
- R1
- -229.89 mm
- R2
- 229.89 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4584132062635355
- λ
- 589 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
SBC019 25.4 mm Dia. x -250 mm FL; Uncoated; Double-Concave Lens
The SBC019 is a spherical lens with a base shape of a circle, designed and manufactured by MKS/Newport. This lens falls under the category of concave-concave lenses, making it a double-concave lens. The lens has a diameter of 25.4 mm and a thickness at the edge of 3.07 mm, while the center thickness is 2.5 mm.
The effective focal length (EFL) of this lens is -250 mm, indicating that it is a diverging lens, causing parallel rays to spread out after passing through it. The first radius of curvature (R1) is -229.89 mm, and the second radius of curvature (R2) is 229.89 mm, which are both negative, further confirming the concave nature of the lens.
The back focal length (BFL) of the SBC019 is -250.85 mm. The lens is made of UVFS material with the ID 1965, and it is uncoated. The lens is designed to work with a wavelength of 589 nm. The inner and outer radii are both 0, indicating that the lens has a uniform curvature throughout.
This lens is available for purchase from the Newport website, and it is currently in stock. The link to the product page is provided for your convenience.