84-331 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=30mm UV-VIS 345-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 6.25 mm
- EFL
- 30 mm
- R1
- 16.37 mm
- R2
- -16.37 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
84-331 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=30mm UV-VIS 345-700nm
The 84-331 is a high-quality achromatic doublet lens from Edmund Optics, designed for use in the UV-VIS spectrum, specifically between 345 and 700nm. This lens, with a 6.25mm diameter, is a multiplet type, featuring a complex geometry that includes three radii (r1, r2, and r3) and two distinct material types.
The lens's base shape is circular, and it has an effective focal length (EFL) of 30mm. The geometry of the lens is intricate, with an inner radius of 0mm, an outer radius also of 0mm, and a thickness at the edge of 2.61mm. The thickness at the center of the lens is 2mm, with an 'a' value of 1mm.
The lens is composed of two materials: N-FK5 from Schott and F2HT from Schott. Both materials are renowned for their optical properties, and their combination in this lens helps to correct chromatic aberration, a common issue in optical systems.
The lens is coated with Edmund Optics' standard UV-VIS coating on both the front and back surfaces. This coating enhances the lens's performance in the UV-VIS spectrum, providing improved transmission and reduced reflection.
The lens is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink.
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