49-785 12.7 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=19.1mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 19.1 mm
- R1
- 13.19 mm
- R2
- -10.22 mm
Material 1
- Name
- N-BAF10
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6730569473646495
- λ
- 550 nm
- B1
- 1.5851495
- C1
- 0.00926681282 μm2
- B2
- 0.143559385
- C2
- 0.0424489805 μm2
- B3
- 1.08521269
- C3
- 105.613573 μm2
Material 2
- Name
- N-SF6
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.811866267147773
- λ
- 550 nm
- B1
- 1.77931763
- C1
- 0.0133714182 μm2
- B2
- 0.338149866
- C2
- 0.0617533621 μm2
- B3
- 2.08734474
- C3
- 174.01759 μm2
49-785 12.7 mm Dia. N-BAF10/N-SF6 Achromatic Doublet; EFL=19.1mm VIS-NIR 400-1000nm
The 49-785 is a high-quality achromatic doublet lens from Edmund Optics, designed for use in the visible (VIS) and near-infrared (NIR) spectrum, specifically catering to the 400-1000nm range. This lens is a multiplet, meaning it is composed of multiple optical elements to achieve superior performance.
The lens boasts a 12.7 mm diameter and an effective focal length (EFL) of 19.1 mm, making it suitable for a wide range of optical applications. The geometry of the lens is carefully crafted, with an edge thickness of 4.72 mm and a center thickness of 5.25 mm. The lens also features an inner radius of 0 mm and an outer radius of 0 mm, further enhancing its optical performance.
The 49-785 lens is made from two types of high-quality Schott glass: N-BAF10 and N-SF6. These materials are chosen for their excellent optical properties, particularly their low dispersion, which helps to minimize chromatic aberration. The lens is coated with Edmund Optics' proprietary VIS-NIR coating (edm visnir0sp2002000), which is applied to both the front and back surfaces. This coating is designed to enhance the lens's performance in the VIS-NIR spectrum, reducing reflection and improving transmission.
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