LC1254-A N-BK7 Plano-Concave Lens; Dia:25 mm; f=-100.0 mm ARC 350-700nm
- 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-A N-BK7 Plano-Concave Lens; Dia:25 mm; f=-100.0 mm ARC 350-700nm
The LC1254-A is a plano-concave lens, part of Thorlabs' extensive catalog of optical elements. This lens is designed with a spherical geometry, featuring a base shape of a circle. The lens has a diameter of 25 mm and a thickness at the edge of 5.5 mm, while the center thickness measures 4 mm.
The lens' 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 does not have an inner or outer radius, suggesting a uniform curvature.
The lens is made of n-BK7, a type of glass manufactured by Schott. This material is known for its excellent optical properties, making it a popular choice for various applications. The lens is designed to operate at a wavelength of 632.8 nm.
The lens features anti-reflection coatings on both the front and back surfaces. These coatings, designated as "tho a bbar," are designed to reduce reflection and increase transmission across the 350-700 nm spectral range. This coating enhances the lens' performance, making it suitable for use in a wide range of applications.
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