49-944 20 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=25mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 20 mm
- EFL
- 25 mm
- R1
- 18.03 mm
- R2
- -13.27 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-SF6
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.811866267147773
- λ
- 550 nm
- B1
- 1.77931763
- C1
- 0.0133714182 μm2
- B2
- 0.338149866
- C2
- 0.0617533621 μm2
- B3
- 2.08734474
- C3
- 174.01759 μm2
49-944 20 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=25mm VIS 0° 425-675nm
The 49-944 is a high-quality achromatic doublet lens, boasting a 20 mm diameter and an effective focal length of 25mm. This lens is designed for use within the visible light spectrum, specifically between 425-675nm.
Manufactured by Edmund Optics, this lens is a multiplet, meaning it is composed of multiple optical elements. The lens is made from two types of Schott glass, N-BAF10 and N-SF6, which are renowned for their optical clarity and durability.
The lens features a standard curvature coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating enhances the lens's light transmission capabilities and reduces surface reflections, thereby improving overall image quality.
The geometry of the lens is carefully crafted to ensure optimal performance. The edge thickness measures 8.06mm, while the center thickness is 9.5mm. The lens also features a unique radius configuration, with the first radius (r1) at 18.03mm, the second radius (r2) at -13.27mm, and the third radius (r3) at -55.46mm.
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