62-495 25 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-150mm VIS 0° 425-675nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -150 mm
- R1
- -92.3 mm
- R2
- 68.87 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
62-495 25 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-150mm VIS 0° 425-675nm
The 62-495 is a 25 mm diameter Negative Achromatic Doublet lens, designed and manufactured by Edmund Optics. This lens is specifically engineered for use within the visible light spectrum, spanning from 425 to 675 nanometers. The lens boasts an effective focal length (EFL) of -150mm, making it suitable for a wide range of optical applications.
The lens is constructed from two distinct materials, N-BK7 and N-SF5, both sourced from Schott. These materials are carefully selected for their optical properties, contributing to the lens's overall performance. The lens features a standard coating on both the front and back surfaces, specifically the EDMM Vis-0 Standard Curve coating, which is designed to enhance the lens's light transmission capabilities and durability.
The lens geometry is intricately designed, with a center thickness of 2.5mm and edge thickness of 7.73mm. The lens's inner and outer radii are 0mm, and it features three distinct radii (r1, r2, and r3) that contribute to its optical performance. The lens's shape is a multiplet, which is a combination of multiple individual lenses, each with its own unique radius and thickness.
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