33-919 75 mm Dia. N-BAK1/N-SF8 Achromatic Doublet; EFL=150mm MgF2 400-700nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 75 mm
- EFL
- 150 mm
- R1
- 92.05 mm
- R2
- -72.85 mm
Material 1
- Name
- N-BAK1
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5746241031015316
- λ
- 550 nm
- B1
- 1.12365662
- C1
- 0.00644742752 μm2
- B2
- 0.309276848
- C2
- 0.0222284402 μm2
- B3
- 0.881511957
- C3
- 107.297751 μm2
Material 2
- Name
- N-SF8
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6935844234114055
- λ
- 550 nm
- B1
- 1.55075812
- C1
- 0.0114338344 μm2
- B2
- 0.209816918
- C2
- 0.0582725652 μm2
- B3
- 1.46205491
- C3
- 133.24165 μm2
33-919 75 mm Dia. N-BAK1/N-SF8 Achromatic Doublet; EFL=150mm MgF2 400-700nm
The 33-919 is a high-quality achromatic doublet lens, boasting a 75 mm diameter and an effective focal length of 150mm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase on their official website. The product link provided is valid and indicates that the item is currently in stock.
The lens is constructed from two types of glass, N-BAK1 and N-SF8, both from the reputable Schott glass catalog. This combination is used to correct chromatic aberrations, ensuring sharp and clear images across the entire visible spectrum, from 400 to 700nm.
The lens features a front and back coating of EDM MgF2, which is a standard coating that provides excellent anti-reflection properties. This coating enhances the lens's performance by reducing unwanted reflections and increasing transmission, thereby improving image quality.
The geometry of the lens is carefully designed, with a thickness of 36.01mm at the edge and 23.2mm at the center. The lens also features a central thickness of 23.1mm, which is slightly less than the overall center thickness, suggesting a sophisticated design aimed at minimizing optical aberrations.
