Positive Achromatic Lenses, D=12.7mm, F=74.9mm, VIS-NIR N-BK7/N-SF2, United Optical Technology Co., Ltd (CAT#: STEM-OP-1849-YJL)

Positive Achromatic Lenses, D=12.7mm, F=74.9mm, VIS-NIR N-BK7/N-SF2, model 145274, is manufactured by United Optical Technology Co., Ltd.
Achromatic lenses are used to correct color and minimize or eliminate chromatic aberration. In addition, the achromatic design also helps minimize spherical aberration. Achromatic lenses are suitable for various applications such as inspection or spectroscopy.

Diameter: 12.7mm
EFL: 74.9mm
Coating: AR@400~1100nm
Material: N-BK7/N-SF2
BFL: 72.67mm
Curvature Radius R1: 38.36mm
Curvature Radius R2: -34.96mm
Curvature Radius R3: -177.29mm
Center Thickness CT: 4mm
Center Thickness CT1: 2.5mm
Center Thickness CT2: 1.5mm
Edge Thickness ET: 3.36mm
Available Mount Ring: 500030
Design Wavelength: 587.6nm
Diameter Tolerance: +0.0/-0.1mm
Center Thickness Tolerance: ±0.2mm
Surface Accuracy: λ/4 @632.8nm
Focal Length Tolerance: ±2%
Centering Tolerance: 3-5 arcmin
Surface Quality: 40/20~60/40
Bevel: 0.2mmX45°
n: --

Achromats create smaller spots of light than monolithic lenses.

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