LC1254-C N-BK7 Plano-Concave Lens; Dia:25 mm; f=-100.0 mm ARC 1050-1700nm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Concave)
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- -100 mm
- BFL
- -102.6 mm
- R1
- -51.5 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5150891983370924
- λ
- 632.8 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LC1254-C N-BK7 Plano-Concave Lens; Dia:25 mm; f=-100.0 mm ARC 1050-1700nm
The LC1254-C is a plano-concave lens from Thorlabs, featuring a spherical design and a base shape of a circle. This lens is made from the renowned N-BK7 glass, a type of borosilicate crown glass known for its excellent optical properties, including a high Abbe number and low dispersion. The lens has a diameter of 25 mm and a thickness at the edge of 5.5 mm, while the center thickness is 4 mm.
The lens's effective focal length (EFL) is -100 mm, indicating its diverging nature. The radius of curvature (R1) is -51.5 mm, and the back focal length (BFL) is -102.6 mm. The lens is designed to operate at a wavelength of 632.8 nm.
The LC1254-C comes with anti-reflection (AR) coatings on both the front and back surfaces, specifically designed for the wavelength range of 1050-1700 nm. This coating helps to reduce surface reflections, thereby increasing the amount of light transmitted through the lens.
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