49-943 18 mm Dia. N-BAF10/N-SF57 Achromatic Doublet; EFL=22.5mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 18 mm
- EFL
- 22.5 mm
- R1
- 15.83 mm
- R2
- -12.65 mm
Material 1
- Name
- N-BAF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6730569473646495
- λ
- 550 nm
- B1
- 1.5851495
- C1
- 0.00926681282 μm2
- B2
- 0.143559385
- C2
- 0.0424489805 μm2
- B3
- 1.08521269
- C3
- 105.613573 μm2
Material 2
- Name
- N-SF57
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.854148364121864
- λ
- 550 nm
- B1
- 1.87543831
- C1
- 0.0141749518 μm2
- B2
- 0.37375749
- C2
- 0.0640509927 μm2
- B3
- 2.30001797
- C3
- 177.389795 μm2
49-943 18 mm Dia. N-BAF10/N-SF57 Achromatic Doublet; EFL=22.5mm VIS 0° 425-675nm
The 49-943 is an 18 mm diameter achromatic doublet lens, designed and manufactured by Edmund Optics. This lens is specifically engineered for use within the visible light spectrum, spanning from 425 to 675 nanometers. The lens boasts an effective focal length (EFL) of 22.5mm, making it suitable for a wide range of optical applications.
The lens is constructed from two distinct materials, N-BAF10 and N-SF57, both sourced from Schott. These materials are carefully selected for their optical properties, contributing to the lens's overall performance. The lens features a standard coating on both the front and back surfaces, specifically the EDMM VIS-0 STD CURVE coating, which enhances its light transmission capabilities and reduces unwanted reflections.
The lens geometry is characterized by its diameter, thickness at the edge, inner and outer radii, and the effective focal length. The edge thickness measures 8.03mm, while the center thickness is 8.7mm with an additional 3mm of material on the center a-side. The lens's base shape is circular, and it features three radii (r1, r2, and r3) that contribute to its overall optical performance.
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