49-790-INK 12.7 mm Dia. N-BAK1/N-SF15 Achromatic Doublet; EFL=50.8mm VIS-NIR 400-1000nm
- Type
- Lens
- Subtype
- Multiplets
- Brand
- Edmund Optics
Properties
- Shape
- Circular
- Diameter
- 12.7 mm
- EFL
- 50.8 mm
- R1
- 33.17 mm
- R2
- -23.98 mm
Material 1
- Name
- N-BAK1
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5746241031015316
- λ
- 550 nm
- B1
- 1.12365662
- C1
- 0.00644742752 μm2
- B2
- 0.309276848
- C2
- 0.0222284402 μm2
- B3
- 0.881511957
- C3
- 107.297751 μm2
Material 2
- Name
- N-SF15
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.7038049870312608
- λ
- 550 nm
- B1
- 1.57055634
- C1
- 0.0116507014 μm2
- B2
- 0.218987094
- C2
- 0.0597856897 μm2
- B3
- 1.50824017
- C3
- 132.709339 μm2
49-790-INK 12.7 mm Dia. N-BAK1/N-SF15 Achromatic Doublet; EFL=50.8mm VIS-NIR 400-1000nm
The 49-790-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 12.7 mm, is designed for use in the visible to near-infrared spectrum, spanning 400-1000nm. The lens is specifically designed for use in applications that require superior image quality and color correction.
The lens features a focal length of 50.8mm, making it suitable for a wide range of optical systems. The achromatic design, which combines two different types of glass (N-BAK1 and N-SF15), effectively eliminates chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. This results in sharper images with improved color accuracy.
The lens has a center thickness of 2.5mm and an edge thickness of 3.16mm, providing robustness and durability. The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces, enhancing its transmission capabilities and protecting it from environmental factors.
This lens is a multiplet, meaning it is composed of multiple elements. The geometry of the lens is carefully designed to provide the best possible performance. The lens has a radius of curvature of 33.17mm on the first surface and -23.98mm on the second surface, with a third surface radius of -89.03mm. The lens is designed to be used in systems where the object distance is greater than the focal length.
