67-634 15mm Dia. x 45mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 15 mm
- EFL
- 45 mm
- BFL
- 44 mm
- R1
- 45.99 mm
- R2
- -45.99 mm
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
67-634 15mm Dia. x 45mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
The 67-634 is a high-quality double-convex lens, 15mm in diameter and 45mm in focal length, designed for use in the near-infrared (NIR) spectrum. This lens is sourced from Edmund Optics, a leading provider of optical components, and is available for purchase directly from their website.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent transparency in the visible and near-infrared regions. It features a standard NIR-II coating on both the front and back surfaces, which enhances its performance in the 750-1550nm wavelength range. This coating is designed to reduce surface reflections, thereby increasing transmission and improving overall image quality.
The geometry of the lens includes a 1.77mm edge thickness and a 3mm center thickness. The front and back radii are 45.99mm and -45.99mm respectively, while the back focal length is 44mm. The lens has no inner or outer radius, indicating a uniform thickness across its surface.
This lens is a spherical lens, meaning it has a surface that is a portion of a sphere. This shape is commonly used in optical systems due to its simplicity and the ability to focus light to a point. The double-convex design, where both surfaces are convex, further enhances the lens's ability to focus light, making it suitable for a wide range of applications.