65-971 12.5 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=25mm UV-VIS 345-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 25 mm
- R1
- 15.08 mm
- R2
- -11.48 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
65-971 12.5 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=25mm UV-VIS 345-700nm
This is a 12.5 mm diameter achromatic doublet lens, catalog number 65-971, sourced from Edmund Optics. The lens is designed for use in the UV-VIS spectrum, specifically between 345 and 700nm. The lens features a focal length of 25mm, making it suitable for a wide range of optical applications.
The lens is composed of two elements, made from N-FK5 and F2HT Schott glass. These materials are chosen for their excellent optical properties, contributing to the lens's high-quality performance. The lens is coated with an EDM UV-VIS standard curve coating on both the front and back surfaces, further enhancing its performance in the UV-VIS spectrum.
The lens geometry includes a thickness of 4.99mm at the edge, with an inner radius of 0 and an outer radius of 0. The first radius of curvature (r1) is 15.08, while the second radius (r2) is -11.48, and the third radius (r3) is -30.1. The center thickness is 5mm, with an additional 2mm at the center a.
This lens is available for purchase directly from the Edmund Optics website, and the link provided is valid and indicates that the lens is currently in stock.
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