LF1822-B 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 650-1050nm
- 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-B 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-100mm 650-1050nm
The LF1822-B is a spherical lens with a concave-convex base shape and a circular geometry. This lens, sourced from Thorlabs, has a diameter of 25.4 mm and a thickness at the edge of 4.7 mm, while the center thickness measures 3 mm. The effective focal length (EFL) of this lens is -100 mm, and it is designed to operate within the wavelength range of 650-1050 nm.
The LF1822-B is made from N-BK7, a popular glass type in the optical industry known for its excellent optical properties. The lens features a front and back coating of tho b bbar, which is a broadband anti-reflection coating designed to reduce surface reflections and increase transmission.
The lens's geometry includes a first radius (r1) of 100 mm and a second radius (r2) of 33.7 mm, resulting in a back focal length (bfl) of -98.7 mm. The lens does not have an inner or outer radius.
This lens is a negative meniscus lens, meaning it has a negative focal length and a concave front surface and a convex back surface. It is in stock and ready for immediate shipping, as indicated by its weblink status.