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12.7 mm dia x 38.1 mm FL, BBAR
12.7 mm dia x 38.1 mm FL, BBAR
Sku:
01AC127-038-BB
$52.00
Specifications of 12.7 mm dia x 38.1 mm FL, BBAR
Diameter (mm) :
12.70 mm
Focal Length (mm) :
38.10 mm
R1 :
24.417 mm
R2=R3 :
-18.576 mm
R4 :
-61.927 mm
Tc1 :
3.00 mm
Tc2 :
1.50 mm
Tc :
4.50 mm
Te :
3.30 mm
Glass :
N-BaK4 & N-SF10
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Achromatic Lenses Specifications
Focal Length Tolerance
±2 %
Material
Optical crown and flint glasses or equivalent
Design Wavelengths
486.1, 546.1, and 656.3 nm
Surface Accuracy
1.5 ? (1.5 ?) power, (?/4) irregularity at 632.8 nm over the clear aperture
Clear Aperture
?central 90% of diameter
Surface Quality
40-20 scratch-dig
Centration
?3 arc min
Diameter Tolerance
+0/-0.1 mm
Center Thickness (Tc = Tc1 + Tc2) Tolerance
±0.2 mm for lenses <50.8 mm diameter
±0.4 mm for lenses ?50.8 mm diameter
Edge Thickness (Te) Tolerance
Nominal Value
AR Coating
SLAR (Single-layer MgF2): Ravg <1.5%, Rmax <2.5% per surface, 400–700 nm;
BBAR: Ravg <0.5%, Rmax <1.5% per surface, 430–700 nm
Operating Temperature
-40 °C to 85 °C
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