LF1822-A 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 350-700nm
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -100 mm
- BFL
- -98.7 mm
- R1
- 100 mm
- R2
- 33.7 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LF1822-A 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 350-700nm
The LF1822-A is a high-quality spherical lens from Thorlabs, designed with a negative meniscus shape and a base diameter of 25.4 mm. This lens is made from the renowned N-BK7 glass from Schott, a material known for its excellent optical properties and versatility. The lens features a center thickness of 3 mm and an edge thickness of 4.7 mm, providing a robust and durable structure.
The LF1822-A has an effective focal length (EFL) of -100 mm, making it suitable for a wide range of applications that require concave-convex lenses. The front and back surfaces of the lens are coated with THo A Bbar, a broadband anti-reflection coating that enhances transmission in the 350-700 nm range. This coating reduces surface reflections, improving the overall efficiency and performance of the lens.
The lens's geometry includes a first radius (R1) of 100 mm and a second radius (R2) of 33.7 mm, contributing to its unique optical properties. The back focal length (BFL) is -98.7 mm, and both the inner and outer radii are 0 mm. The lens's shape is spherical, ensuring high-quality imaging and light transmission.
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