Positive Achromatic Lenses, D=50.80mm, F=250.00mm, VIS N-BK7/SF2, United Optical Technology Co., Ltd (CAT#: STEM-OP-1748-YJL)

Positive Achromatic Lenses, D=50.80mm, F=250.00mm, VIS N-BK7/SF2, model 145090, 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: 50.80mm
EFL: 250.00mm
Coating: AR@400~700nm
Material: N-BK7/SF2
BFL: 244.60mm
Curvature Radius R1: 137.10mm
Curvature Radius R2: -111.70mm
Curvature Radius R3: -459.20mm
Center Thickness CT: 9.50mm
Center Thickness CT1: 7.50mm
Center Thickness CT2: 2.00mm
Edge Thickness ET: 6.40mm
Available Mount Ring: 500002
Design Wavelength: --
Diameter Tolerance: +0.0/-0.1
Center Thickness Tolerance: ±0.2
Surface Accuracy: λ/4@632.8nm
Focal Length Tolerance: ±2%
Centering Tolerance: 3~5 arcmin
Surface Quality: 40-20~60-40
Bevel: 0.2X45°
n: --

Achromats create smaller spots of light than monolithic lenses.

Positive Achromatic Lenses, D=50.80mm, F=300.00mm, VIS N-BK7/SF2, United Optical Technology Co., Ltd (CAT#: STEM-OP-1749-YJL)
Positive Achromatic Lenses, D=50.80mm, F=400.00mm, VIS N-BK7/SF2, United Optical Technology Co., Ltd (CAT#: STEM-OP-1750-YJL)
Positive Achromatic Lenses, D=50.80mm, F=500.00mm, VIS N-BK7/SF2, United Optical Technology Co., Ltd (CAT#: STEM-OP-1751-YJL)
Positive Achromatic Lenses, D=50.80mm, F=750.00mm, VIS N-BK7/SF2, United Optical Technology Co., Ltd (CAT#: STEM-OP-1752-YJL)
Positive Achromatic Lenses, D=50.80mm, F=1000.00mm, VIS N-BK7/SF2, United Optical Technology Co., Ltd (CAT#: STEM-OP-1753-YJL)
Positive Achromatic Lenses, D=60.00mm, F=145.00mm, VIS SK2/SF10, United Optical Technology Co., Ltd (CAT#: STEM-OP-1754-YJL)