49-393 50 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=250mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 50 mm
- EFL
- 250 mm
- R1
- 162.59 mm
- R2
- -123.82 mm
Material 1
- Name
- N-BAK4
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5709961571059783
- λ
- 550 nm
- B1
- 1.28834642
- C1
- 0.00779980626 μm2
- B2
- 0.132817724
- C2
- 0.0315631177 μm2
- B3
- 0.945395373
- C3
- 105.965875 μm2
Material 2
- Name
- N-SF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7336618876174243
- λ
- 550 nm
- B1
- 1.62153902
- C1
- 0.0122241457 μm2
- B2
- 0.256287842
- C2
- 0.0595736775 μm2
- B3
- 1.64447552
- C3
- 147.468793 μm2
49-393 50 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=250mm VIS-NIR 400-1000nm
The 49-393 is a high-quality achromatic doublet lens, boasting a 50 mm diameter and an effective focal length of 250mm. This lens is designed for use in the visible to near-infrared spectrum, spanning 400-1000nm.
The lens is crafted from two types of Schott glass, N-BAK4 and N-SF10, which are renowned for their excellent optical properties. The use of these materials ensures high image quality, low chromatic aberration, and excellent light transmission.
The lens geometry is meticulously designed, with a central thickness of 9.75mm and edge thickness of 10.54mm. The radii of curvature are R1: 162.59mm, R2: -123.82mm, and R3: -402.58mm, which contribute to the lens's superior optical performance.
The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces. This coating enhances the lens's durability and resistance to environmental factors, while also reducing surface reflections and improving light transmission.
The 49-393 is currently in stock and available for purchase on the Edmund Optics website. With its superior optical performance, robust construction, and wide spectral range, this lens is an excellent choice for a variety of applications in the fields of imaging, spectroscopy, and metrology.
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