84-328 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=15mm UV-VIS 345-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6.25 mm
- EFL
- 15 mm
- R1
- 9.12 mm
- R2
- -6.79 mm
Material 1
- Name
- N-FK5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4889720412922705
- λ
- 550 nm
- B1
- 0.844309338
- C1
- 0.00475111955 μm2
- B2
- 0.344147824
- C2
- 0.0149814849 μm2
- B3
- 0.910790213
- C3
- 97.8600293 μm2
Material 2
- Name
- F2HT
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6236551229276037
- λ
- 550 nm
- B1
- 1.34533359
- C1
- 0.00997743871 μm2
- B2
- 0.209073176
- C2
- 0.0470450767 μm2
- B3
- 0.937357162
- C3
- 111.886764 μm2
84-328 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=15mm UV-VIS 345-700nm
The 84-328 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and an effective focal length (EFL) of 15mm. This lens is designed for use within the UV-VIS spectrum, specifically between 345-700nm, making it ideal for a wide range of applications that require precise optical performance within this spectrum.
The lens is composed of two elements, N-FK5 and F2HT, both from Schott, a renowned manufacturer of high-quality optical glass. This combination helps to minimize chromatic aberration, a common issue in optical systems, ensuring sharp and clear images.
The lens features a standard UV-VIS coating on both the front and back surfaces, which is Edmund Optics' standard curve. This coating enhances the lens's transmission and reduces surface reflections, further improving its optical performance.
The geometry of the lens is carefully designed to optimize its performance. It has a thickness of 3.17mm at the edge, with the center thickness being 3mm and 1mm at the back. The lens also features three radii of curvature: r1 at 9.12mm, r2 at -6.79mm, and r3 at -17.77mm. These parameters are crucial in determining the lens's optical properties.
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