89-362 25mm Dia. Silicon Aspheric Lens; EFL=12.5mm; NA=1 BBAR 3-5µm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 12.5 mm
- BFL
- 10.7 mm
- R1
- 23.37 mm
- R2
- 87.36 mm
Material
- Name
- Silicon
- Dispersion Equation
- Sellmeier
- n (λ)
- 3.4253004915192267
- λ
- 4000 nm
- B1
- 10.6684293
- C1
- 0.090912191 μm2
- B2
- 0.003043475
- C2
- 1.287660172 μm2
- B3
- 1.54133408
- C3
- 1218816 μm2
89-362 25mm Dia. Silicon Aspheric Lens; EFL=12.5mm; NA=1 BBAR 3-5µm
This is a high-quality 89-362 25mm Dia. Silicon Aspheric Lens, designed and manufactured by Edmund Optics. The lens boasts an effective focal length (EFL) of 12.5mm and a numerical aperture (NA) of 1, making it a versatile choice for various optical applications.
The lens is made of silicon, specifically silicon sal vil 1957, and features a base shape of a circle. It has a diameter of 25mm and a thickness of 2.37mm at the edge, with a center thickness of 4.75mm. The lens's front and back surfaces are coated with BBAR 3-5µm, ensuring optimal light transmission and reducing unwanted reflections.
The lens's geometry is defined by its inner and outer radii, both of which are 0. The front and back focal lengths are 10.7mm and 0mm, respectively. The lens's aspheric shape is defined by its conic constant (k1) of -2.072484 and its aspheric coefficients (r1 and r2) of 23.373 and 87.361, respectively.
The lens's coating is a crucial aspect of its performance. The front surface is coated with edm arcoatedsilicon, and the back surface is also coated with the same material. This coating ensures high transmission and low reflection, making the lens suitable for use in demanding optical systems.
