69-687 25mm Dia. x 75mm FL; Coated; Si Plano-Convex Lens BBAR 3-5µm
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 75 mm
- R1
- 181.32 mm
Material
- Name
- Silicon
- Dispersion Equation
- Sellmeier
- n (λ)
- 3.4176022196178844
- λ
- 10600 nm
- B1
- 10.6684293
- C1
- 0.090912191 μm2
- B2
- 0.003043475
- C2
- 1.287660172 μm2
- B3
- 1.54133408
- C3
- 1218816 μm2
69-687 25mm Dia. x 75mm FL; Coated; Si Plano-Convex Lens BBAR 3-5µm
The 69-687 is a 25mm diameter, 75mm focal length Plano-Convex lens, designed for use in the 3-5µm spectral range. This lens is sourced from Edmund Optics, a leading provider of optical components. The lens features a coating on both the front and back surfaces, enhancing its performance in the specified wavelength range.
The lens's geometry includes a 2.57mm edge thickness and a 3mm center thickness, providing a robust structure suitable for various applications. The lens's shape is spherical, with a 181.32mm radius on the curved surface. The lens's base shape is circular, offering versatility in its integration into optical systems.
The lens is made from silicon sal vil 1957, a material known for its excellent optical properties in the infrared spectrum. This material, combined with the lens's design and coating, ensures high transmission and low loss in the 3-5µm range.
The lens's coating, edm arcoatedsilicon, is applied to both the front and back surfaces, enhancing its performance in the specified wavelength range. This coating helps to reduce surface reflections, improving the lens's overall efficiency and reducing the need for additional anti-reflection components in the optical system.
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