47-664 12.5 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=35mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 35 mm
- R1
- 22.94 mm
- R2
- -15.54 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
47-664 12.5 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=35mm VIS 0° 425-675nm
The 47-664 is a high-quality achromatic doublet lens, boasting a 12.5 mm diameter and an effective focal length (EFL) of 35mm. This lens is specifically designed for the visible spectrum, covering a wavelength range of 425-675nm. Manufactured by Edmund Optics, this lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance.
The lens is constructed from two types of Schott glass, N-SK11 and N-SF5, which are renowned for their optical properties. The front and back surfaces of the lens are coated with Edmund Optics' standard curve Vis-0 coating, enhancing its transmission capabilities within the specified wavelength range.
The lens geometry is meticulously designed, with an inner radius of 0mm, an outer radius of 0mm, and a center thickness of 3.68mm. The edge thickness is slightly larger at 3.98mm, providing additional structural support. The lens also features a radius of curvature of 22.94mm on the first surface and -15.54mm on the second surface, contributing to its excellent imaging capabilities.
