LM11-25-200 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-200mm Uncoated
- Type
- Lens
- Subtype
- Spherical Lens (Concave-Convex)
- Brand
- CeNing Optics
Properties
- Shape
- Circular
- Diameter
- 25.4 mm
- EFL
- -200 mm
- BFL
- -199.6 mm
- R1
- 90 mm
- R2
- 47.84 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.518720636186463
- λ
- 546.1 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
LM11-25-200 25.4 mm Dia. N-BK7 Negative Meniscus Lens; EFL=-200mm Uncoated
This is the LM11-25-200, a 25.4 mm diameter Negative Meniscus Spherical Lens made from N-BK7 glass, sourced from CeNing Optics. The lens features a base shape of a circle and is uncoated.
The lens has a center thickness of 3 mm and an edge thickness of 3.7 mm. The effective focal length (EFL) is -200 mm, indicating that it is a concave-convex lens. The first radius of curvature (R1) is 90 mm, while the second radius of curvature (R2) is 47.84 mm. The back focal length (BFL) is -199.6 mm. The inner and outer radii are both 0, suggesting that the lens has a uniform curvature.
The lens is designed to operate at a wavelength of 546.1 nm. It is made of N-BK7 glass, a common material in optical applications due to its excellent optical properties and wide transparency range. The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties or protect it from environmental factors.
This lens is currently in stock and more information can be found on the CeNing Optics website.
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