49-330 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=75mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.5 mm
- EFL
- 75 mm
- R1
- 46.44 mm
- R2
- -33.77 mm
Material 1
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
Material 2
- Name
- N-SF5
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.6771143911586193
- λ
- 550 nm
- B1
- 1.52481889
- C1
- 0.011254756 μm2
- B2
- 0.187085527
- C2
- 0.0588995392 μm2
- B3
- 1.42729015
- C3
- 129.141675 μm2
49-330 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=75mm VIS-NIR 400-1000nm
The 49-330 is a high-quality achromatic doublet lens, boasting a 12.5 mm diameter and a focal length of 75mm, specifically designed for the visible to near-infrared spectrum (400-1000nm). This lens is sourced from the renowned optical vendor, Edmund Optics, and is a testament to their commitment to precision and quality.
The lens is constructed from two types of materials, N-BK7 and N-SF5, both from Schott, a leading manufacturer of optical glass. This combination ensures superior optical performance, minimizing chromatic aberration and delivering sharp, clear images. The lens features a sophisticated geometry, with an inner radius of 0 and an outer radius of 0, and a thickness edge of 3.97mm. The center thickness is 3mm, reducing weight while maintaining structural integrity.
The 49-330 is coated with Edmund Optics' proprietary VIS-NIR coating (edm visnir0sp2002000), which is applied to both the front and back surfaces. This coating enhances the lens's performance in the visible to near-infrared spectrum, increasing transmission and reducing reflection.
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