48-940 12mm Dia. x -18mm FL; VIS 0deg Coated; Double-Concave Lens 425-675nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Concave)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- -18 mm
- BFL
- -18.65 mm
- R1
- -18.94 mm
- R2
- 18.94 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
48-940 12mm Dia. x -18mm FL; VIS 0deg Coated; Double-Concave Lens 425-675nm
The 48-940 is a Double-Concave Spherical Lens, 12mm in diameter and featuring a focal length of -18mm. This lens is sourced from Edmund Optics, a renowned vendor in the optical industry. The lens is designed for use within the visible light spectrum, specifically catering to wavelengths between 425nm and 675nm.
The lens geometry is characterized by its concave-concave base shape, with an inner radius and outer radius of 0mm each. The edge thickness measures 3.76mm, while the center thickness is 2mm. The back focal length (BFL) is -18.65mm, and the effective focal length (EFL) is -18mm.
The lens is constructed from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The lens features a standard anti-reflective coating on both the front and back surfaces, specifically the EDM VIS-0 STD CURVE coating. This coating is designed to minimize surface reflections and optimize transmission within the visible light spectrum.
The lens is currently in stock and available for immediate purchase, as indicated by its valid weblink status. For more detailed information or to make a purchase, users are encouraged to visit the provided weblink.