49-358 25 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
- 25 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
49-358 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=75mm VIS-NIR 400-1000nm
The 49-358 is a high-quality achromatic doublet lens, boasting a 25 mm diameter and an effective focal length (EFL) of 75mm. This lens is designed for use in the visible (VIS) and near-infrared (NIR) spectrum, specifically catering to the wavelength range of 400-1000nm.
The lens is composed of two elements, made from N-BK7 and N-SF5 Schott glass, respectively. These materials are renowned for their excellent optical properties, contributing to the lens's high performance. The lens features a sophisticated geometry, with a thickness of 6.97mm at the edge, 7mm at the center, and 2.5mm at the center a. The inner and outer radii are 0mm, and the first and second radii of curvature are 46.44mm and -33.77mm, respectively. The third radius of curvature is -95.94mm.
The 49-358 is coated with the EDM VISNIR0SP2002000 coating on both the front and back surfaces. This coating enhances the lens's performance in the VIS-NIR spectrum, ensuring optimal light transmission and reducing unwanted reflections.
This lens is available from Edmund Optics and is currently in stock, making it an ideal choice for immediate integration into your optical system.
