88-596 75 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=200mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 75 mm
- EFL
- 200 mm
- R1
- 118.81 mm
- R2
- -96.37 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
88-596 75 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=200mm VIS-NIR 400-1000nm
The 88-596 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, with a wavelength range of 400-1000nm. The lens boasts a 75mm diameter and an effective focal length (EFL) of 200mm, 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 chosen for their excellent optical properties, particularly their low dispersion, which helps to minimize chromatic aberration. The lens is a doublet, meaning it consists of two separate elements, which are cemented together to form a single, high-performance lens.
The 88-596 features a sophisticated geometry, with a central thickness of 17.94mm and edge thickness of 15.42mm. The lens also has a 6mm central thickness on the 'a' side, and it has a clear aperture, with no inner or outer radius specified.
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' performance in the VIS-NIR spectrum, reducing reflection and improving transmission.
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