49-363 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=175mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 175 mm
- R1
- 109.16 mm
- R2
- -79.38 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
49-363 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=175mm VIS-NIR 400-1000nm
The 49-363 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a diameter of 25 mm, is specifically engineered for use in the visible to near-infrared spectrum, spanning from 400 to 1000 nm. The lens boasts an effective focal length (EFL) of 175 mm, making it suitable for a wide range of optical applications.
The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott. These materials are carefully selected for their optical properties, contributing to the lens's overall performance. The lens features a complex geometry, with a center thickness of 6 mm, an edge thickness of 7.94 mm, and radii of curvature of 109.16 mm, -79.38 mm, and -226.03 mm for the first, second, and third surfaces, respectively.
The 49-363 lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000), which is applied to both the front and back surfaces. This coating is designed to enhance the lens's transmission in the visible to near-infrared spectrum, further optimizing its performance in its intended application range.
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