89-245 12mm Dia. x 72mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
- Type
- Lens
- Subtype
- Spherical Lens (Convex-Convex)
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12 mm
- EFL
- 72 mm
- BFL
- 71.07 mm
- R1
- 73.97 mm
- R2
- -73.97 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
89-245 12mm Dia. x 72mm FL; YAG-BBAR Coated; Double-Convex Lens YAG-BBAR 500-1100nm
The 89-245 is a high-quality double-convex lens, sourced from the renowned optical components vendor, Edmund Optics. This lens, with a diameter of 12mm and a focal length of 72mm, is designed for use within the wavelength range of 500-1100nm, making it suitable for a wide range of optical applications.
The lens is crafted from Schott's n-BK7 glass, a material known for its excellent optical properties, including a high Abbe number and low dispersion. This ensures minimal chromatic aberration, a critical factor in high-precision optical systems.
The 89-245 features a YAG-BBAR coating on both its front and back surfaces. This coating, designed for the 500-1100nm wavelength range, enhances the lens's performance by reducing surface reflections and increasing transmission. The coating also provides protection against environmental factors, ensuring the lens maintains its performance over time.
The geometry of the lens is meticulously designed, with an edge thickness of 2.31mm and a center thickness of 2.8mm. The lens's inner and outer radii are 0mm, and its back focal length is 71.07mm. These specifications contribute to the lens's high optical quality and make it compatible with various optical systems.