The KPA25AR.14 Precision Polished Aspheric Lens is an bi-convex aspheric lens, made with L-BAL35 optical glass, with 50.0 mm diameter and 37.5 mm effective focal length. AR.14 coating provides less than 1.5% reflection from 425 nm to 675 nm. Aspheric lenses are typically used to reduce the number of lens elements in an optical system, thus reducing the size and weight of assemblies. Aspheric profiles are more difficult to manufacture, but these lenses have increased NA (numerical apeture) and can reduce spherical and other aberrations when compared to a simple lens. These precision aspheric lenses are computer optimized for optimal performance with minimum aberrations. Exact performance parameters can be calculated by feeding the lens parameters in any standard optical design software.
Технические характеристики
- Lens Shape Bi-Convex Aspheric
- Diameter 50.0 mm
- Antireflection Coating 430-700 nm
- Coating Code AR.14
- Lens Material L-BAL 35 (589/611)
- Surface Quality 60-40 scratch-dig
- Surface Accuracy 0.75 m RMS
- Effective Focal Length (EFL) 37.5 mm
- Back Focal Length (BFL) 25.66 mm
- Center Thickness (Tc) 19.40 mm
- F/# 0.8
- Radius of Curvature (R) 22.78 mm
- Design Wavelength 587.6 nm
- Shape S2 Convex
- Diameter Tolerance +0.0/-0.1 mm
- Center Thickness Tolerance ±0.1 mm
- Clear Aperture 90% of central diameter
- Substrate Centering of Ruled Area 3-5 arc min
