89-614 25mm Dia. Germanium Infrared Aspheric Lens; EFL=75mm; NA=0.17 BBAR 3-12µm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 75 mm
- BFL
- 72.3 mm
- R1
- 59.61 mm
- R2
- 78 mm
Material
- Name
- Germanium
- Dispersion Equation
- Sellmeier
- n (λ)
- 4.024720747638282
- λ
- 4000 nm
- B1
- 0.4886331
- C1
- 1.393959 μm2
- B2
- 14.5142535
- C2
- 0.1626427 μm2
- B3
- 0.0091224
- C3
- 752.19 μm2
89-614 25mm Dia. Germanium Infrared Aspheric Lens; EFL=75mm; NA=0.17 BBAR 3-12µm
This is the 89-614 model from Edmund Optics, a 25mm diameter Germanium Infrared Aspheric Lens with an effective focal length of 75mm and a numerical aperture of 0.17. The lens is coated with BBAR 3-12µm, ensuring high-quality performance in the infrared spectrum.
The lens features a base shape of a circle, with an inner radius of 0 and an outer radius of 0. The diameter of the lens is 25mm, and it has a thickness of 2.39mm at the edge and 2.8mm at the center. The front and back of the lens are coated with "edm arcedgermanium31", providing excellent durability and resistance to environmental factors.
The lens has a focal length of 75mm, with a front radius of curvature of 59.61mm and a back radius of curvature of 78mm. The back focal length is 72.3mm. The lens is designed to operate at a wavelength of 4000nm.
The item data indicates that the lens is in stock and available for immediate purchase. For more information, users can visit the provided weblink: https://www.edmundoptics.eu/p/25mm-dia-x-75mm-fl-3-12mum-coated-ge-aspheric-lens/32075/.
