67-611 9mm Dia. x 27mm 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
- 9 mm
- EFL
- 27 mm
- BFL
- 26.08 mm
- R1
- 27.43 mm
- R2
- -27.43 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
67-611 9mm Dia. x 27mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm
The 67-611 is a high-performance double-convex lens, designed and manufactured by Edmund Optics, a leading global provider of optical components. This lens boasts a 9mm diameter and a focal length of 27mm, making it suitable for a wide range of applications.
The lens is constructed from N-BK7 Schott glass, a material renowned for its excellent optical properties, including high transparency and low dispersion. This ensures that the lens delivers sharp, clear images with minimal distortion.
The 67-611 lens features a unique NIR II coating on both the front and back surfaces. This coating is specifically designed to enhance the lens' performance in the near-infrared spectrum, between 750nm and 1550nm. It reduces reflection and increases transmission in this range, improving the lens' overall efficiency and image quality.
The lens geometry is another notable feature. With a center thickness of 2.74mm and edge thickness of 2mm, the lens is robust and durable, yet maintains a high level of optical performance. The radii of curvature for the front and back surfaces are 27.43mm and -27.43mm, respectively, resulting in a double-convex design that provides a large field of view and excellent image focus.