16-997 25mm Dia. N-BK7 Precision Aspheric Lens; EFL=50mm; NA=0.25 SWIR-Plus 900-1700nm
- Type
- Lens
- Subtype
- Aspheric Lens
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 25 mm
- EFL
- 50 mm
- BFL
- 45.23 mm
- R1
- 25.84 mm
- R2
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5167984379050088
- λ
- 587.6 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
16-997 25mm Dia. N-BK7 Precision Aspheric Lens; EFL=50mm; NA=0.25 SWIR-Plus 900-1700nm
This is a high-precision asperic lens, catalog number 16-997, offered by Edmund Optics. It is designed for use in the shortwave infrared (SWIR) spectrum, specifically for wavelengths between 900 and 1700nm. The lens is made from N-BK7, a popular borosilicate glass known for its excellent optical properties.
The lens has a diameter of 25mm and a numerical aperture (NA) of 0.25. The effective focal length (EFL) is 50mm, making it suitable for applications that require a moderate focal length. The lens is coated with Edmund Optics' SWIR-Plus coating, which is specifically designed for the 900-1700nm range, ensuring high transmission and minimal reflection.
The lens geometry includes an inner radius of 0mm, an outer radius of 0mm, and a thickness at the edge of 4.14mm. The thickness at the center is 7.24mm. The aspheric surface is defined by a conic constant of -0.800424 and a series of aspheric coefficients.
The lens is available with the same SWIR-Plus coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the SWIR region, providing high transmission and low reflectivity.
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