49-364 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=200mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 200 mm
- R1
- 124.12 mm
- R2
- -87.26 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
49-364 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=200mm VIS-NIR 400-1000nm
This is the 49-364 Achromatic Doublet lens, a high-quality optical component designed for use in the visible (VIS) and near-infrared (NIR) spectrum, specifically catering to the wavelength range of 400-1000nm. The lens is sourced from the reputable vendor, Edmund Optics, and is available for purchase through their website.
The lens is a multiplet, meaning it is composed of multiple optical elements. In this case, it is made up of two different materials: N-BK7 and N-SF5, both from Schott. The N-BK7 is a well-known borosilicate crown glass, while N-SF5 is a fluorite crown glass, both offering excellent optical performance.
The lens has a diameter of 25mm and an effective focal length (EFL) of 200mm. The edge thickness of the lens is 11.56mm, while the center thickness is 8.5mm. The lens also features a coating on both the front and back surfaces, specifically the edm visnir0sp2002000 coating, which is designed to enhance its performance in the VIS-NIR spectrum.
The curvature of the lens is also noteworthy, with radii of curvature at 124.12mm, -87.26mm, and -253.1mm for the first, second, and third surfaces, respectively. The lens is designed to correct chromatic aberration, making it suitable for a wide range of applications where high-quality imaging is required.
