12-929 12.5 mm Dia. N-BK7/N-SF5 Mounted Achromatic Doublet; EFL=50mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 50 mm
- R1
- 30.73 mm
- R2
- -22.32 mm
Material 1
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
Material 2
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6771143911586193
- λ
- 550 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
12-929 12.5 mm Dia. N-BK7/N-SF5 Mounted Achromatic Doublet; EFL=50mm MgF2 400-700nm
This is a 12.5 mm diameter achromatic doublet lens, offered by Edmund Optics with the catalog number 12-929. The lens is designed for use in the spectral range of 400-700nm, making it suitable for a wide range of optical applications. The lens is mounted and coated with MgF2 on both the front and back surfaces, which is standard Edmund Optics coating.
The lens features a focal length of 50mm (EFL), and its geometry includes an inner radius of 0 and an outer radius of 0. The first radius (r1) is 30.73, the second radius (r2) is -22.32, and the third radius (r3) is -64.75. The thickness at the edge of the lens is 4.06, while the thickness at the center is 3.5. There is also a center 'a' thickness of 1.5.
The lens is composed of two types of glass: N-BK7 from Schott and N-SF5 from Schott. This combination helps to correct chromatic aberrations, making the lens a suitable choice for achromatic applications.
The lens is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink.
