65-436 12 mm Dia. N-LAK14/N-SF66 Achromatic Doublet; EFL=15mm NIR II 750-1550nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 15 mm
- R1
- 9.55 mm
- R2
- -9.55 mm
Material 1
- Name
- N-LAK14
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6994860724588354
- λ
- 550 nm
- B1
- 1.50781212
- C1
- 0.00746098727 μm2
- B2
- 0.318866829
- C2
- 0.0242024834 μm2
- B3
- 1.14287213
- C3
- 80.9565165 μm2
Material 2
- Name
- N-SF66
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.9321208113933757
- λ
- 550 nm
- B1
- 2.0245976
- C1
- 0.0147053225 μm2
- B2
- 0.470187196
- C2
- 0.0692998276 μm2
- B3
- 2.59970433
- C3
- 161.817601 μm2
65-436 12 mm Dia. N-LAK14/N-SF66 Achromatic Doublet; EFL=15mm NIR II 750-1550nm
The 65-436 is a high-quality achromatic doublet lens, boasting a 12 mm diameter and an effective focal length of 15mm, specifically designed for use in the near-infrared spectrum, covering the wavelength range of 750-1550nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase on their official website.
The lens is constructed from two types of Schott glass, N-LAK14 and N-SF66, which are renowned for their excellent optical properties in the near-infrared range. The lens features a complex geometry, with a thickness of 6.06mm at the edge, a central thickness of 6.5mm, and a thickness of 2mm at the center a. The inner and outer radii of the lens are 0mm, and the lens features two radii of curvature, r1 and r2, which are 9.55mm and -9.55mm respectively, and a third radius, r3, which is -57.3mm.
The lens is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces, ensuring optimal performance in the near-infrared spectrum. The lens is classified as a multiplet, indicating its complex construction and high-performance capabilities.
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