49-782 25.4 mm Dia. N-BAK1/N-SF8 Achromatic Doublet; EFL=88.9mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- 88.9 mm
- R1
- 56.98 mm
- R2
- -40.06 mm
Material 1
- Name
- N-BAK1
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5746241031015316
- λ
- 550 nm
- B1
- 1.12365662
- C1
- 0.00644742752 μm2
- B2
- 0.309276848
- C2
- 0.0222284402 μm2
- B3
- 0.881511957
- C3
- 107.297751 μm2
Material 2
- Name
- N-SF8
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6935844234114055
- λ
- 550 nm
- B1
- 1.55075812
- C1
- 0.0114338344 μm2
- B2
- 0.209816918
- C2
- 0.0582725652 μm2
- B3
- 1.46205491
- C3
- 133.24165 μm2
49-782 25.4 mm Dia. N-BAK1/N-SF8 Achromatic Doublet; EFL=88.9mm VIS 0° 425-675nm
The 49-782 is a high-quality achromatic doublet lens, boasting a 25.4 mm diameter and an effective focal length (EFL) of 88.9mm, specifically designed for the visible light spectrum ranging from 425 to 675nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase through their official website.
The lens is constructed from two types of glass, N-BAK1 and N-SF8, both from Schott, ensuring excellent optical performance. The front and back surfaces of the lens are coated with the EDM VIS-0 standard curve coating, providing improved light transmission and protection against environmental factors.
The lens geometry is carefully designed with a thickness of 8.07mm at the edge, 6mm at the center, and 4mm at the center a. The radii of the curvatures are r1=56.98mm, r2=-40.06mm, and r3=-162.82mm. The lens does not have an inner or outer radius.
