47-636-INK 25 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=45mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 45 mm
- R1
- 28.75 mm
- R2
- -21.38 mm
Material 1
- Name
- N-SK11
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5658215515592446
- λ
- 550 nm
- B1
- 1.17963631
- C1
- 0.00680282081 μm2
- B2
- 0.229817295
- C2
- 0.0219737205 μm2
- B3
- 0.935789652
- C3
- 101.513232 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
47-636-INK 25 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=45mm VIS 0° 425-675nm
The 47-636-INK is a high-quality 25 mm diameter achromatic doublet lens, available from Edmund Optics. This lens boasts an effective focal length (EFL) of 45mm and is designed for use within the visible light spectrum, specifically between 425-675nm.
The lens is constructed from two types of Schott glass, N-SK11 and N-SF5, which are renowned for their excellent optical properties. The front and back surfaces of the lens are coated with EDM VIS-0 standard curve coatings, enhancing its performance and durability.
The lens geometry is meticulously designed, with a thickness of 7.08mm at the edge and 7.89mm at the center. The center thickness can be adjusted to 3mm if required. The lens features a first radius (r1) of 28.75mm, a second radius (r2) of -21.38mm, and a third radius (r3) of -82.92mm. The inner and outer radii are both zero.
This lens is a multiplet, meaning it is composed of multiple optical elements. It is available for purchase directly from the Edmund Optics website, where you can find more detailed specifications and pricing information.
