49-270 3 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=4.5mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 3 mm
- EFL
- 4.5 mm
- R1
- 3.16 mm
- R2
- -2.23 mm
Material 1
- Name
- N-LAK22
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6536179449828925
- λ
- 550 nm
- B1
- 1.14229781
- C1
- 0.00585778594 μm2
- B2
- 0.535138441
- C2
- 0.0198546147 μm2
- B3
- 1.04088385
- C3
- 100.834017 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
49-270 3 mm Dia. N-LAK22/N-SF6 Achromatic Doublet; EFL=4.5mm VIS 0° 425-675nm
The 49-270 is a high-quality achromatic doublet lens, boasting a 3 mm diameter and an effective focal length (EFL) of 4.5mm. This lens is specifically designed for the visible spectrum, covering wavelengths from 425 to 675nm.
The lens is composed of two elements, made from N-LAK22 and N-SF6 materials, both sourced from Schott. These materials are known for their excellent optical properties, contributing to the lens's overall performance.
The lens features a standard curvature coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating is designed to enhance the lens's durability and optical performance, reducing surface reflections and improving transmission.
The lens's geometry is meticulously designed, with a thickness of 2.48mm at the edge, a center thickness of 2mm, and a center thickness 'a' of 1mm. The lens's radii are also precisely engineered, with r1 at 3.16mm, r2 at -2.23mm, and r3 at -7.88mm.
This lens is a multiplet, meaning it is composed of multiple elements. The multiplet design allows for superior optical performance, particularly in terms of chromatic aberration correction.
The lens is available from Edmund Optics, and the provided weblink indicates that it is currently in stock. For more information, users are encouraged to visit the provided weblink.
