69-643 25mm Dia. x 100mm FL; Uncoated; Ge Plano-Convex Lens
- Type
- Lens
- Subtype
- Spherical Lens (Plano-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 100 mm
- BFL
- 99.25 mm
- R1
- 300.39 mm
Material
- Name
- Germanium
- Dispersion Equation
- Sellmeier
- n (λ)
- 4.00355628065046
- λ
- 10600 nm
- B1
- 0.4886331
- C1
- 1.393959 μm2
- B2
- 14.5142535
- C2
- 0.1626427 μm2
- B3
- 0.0091224
- C3
- 752.19 μm2
69-643 25mm Dia. x 100mm FL; Uncoated; Ge Plano-Convex Lens
The 69-643 is a 25mm diameter, 100mm focal length plano-convex lens, sourced from Edmund Optics. This lens is made of germanium burnett, a material known for its excellent optical properties, particularly in the infrared spectrum. The lens's plano-convex shape, characterized by a flat surface and a curved surface, is designed to refract and focus light.
The lens has a base shape of a circle, with a diameter of 25mm. The edge thickness measures 2.74mm, while the center thickness is slightly greater at 3mm. The effective focal length (EFL) is 100mm, indicating the lens's ability to focus light at a distance of 100mm from the lens's curved surface.
The lens's inner and outer radii are both zero, suggesting a symmetrical curvature. The radius of curvature (R1) of the curved surface is 300.39mm, and the back focal length (BFL) is 99.25mm. The BFL is the distance between the lens's curved surface and its focal point.
This lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. While coatings can reduce reflection and increase transmission, this lens's uncoated status may be suitable for specific applications where such enhancements are not required.
Please note that the provided weblink is valid and indicates that the lens is in stock, making it readily available for immediate use.
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