1/4-Wave N-BK7 Window 25mm Dia. Uncoated
#45-076
Diameter (mm)
25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
Uncoated
RoHS
Compliant
1/4-Wave N-BK7 Window 25mm Sq. Uncoated
#49-622
Dimensions (mm)
25.00 x 25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
Uncoated
RoHS
Exempt
1/4-Wave N-BK7 Window 25mm Dia. VIS 0 Coating
#47-520
$53.50
Diameter (mm)
25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS 0°, Ravg ≤0.4% @ 425 - 675mn
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 25mm Sq. VIS 0 Coating
#49-629
$62.50
Dimensions (mm)
25.00 x 25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS 0°, Ravg ≤0.4% @ 425 - 675mn
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 25mm Dia. VIS-NIR Coating
#45-661
Diameter (mm)
25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS-NIR, Rabs ≤0.25% @ 880nmavg ≤1.25% @ 400 - 870nmavg ≤1.25% @ 890 - 1000nm
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Compliant
1/4-Wave N-BK7 Window 25mm Sq. VIS-NIR Coating
#49-633
Dimensions (mm)
25.00 x 25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS-NIR, Rabs ≤0.25% @ 880nmavg ≤1.25% @ 400 - 870nmavg ≤1.25% @ 890 - 1000nm
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 25mm Dia. MgF2 Coating
#45-258
Diameter (mm)
25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
MgF2 : ¼λ @ 550nm, Ravg ≤1.75% @ 400 - 700nm
Typical Energy Density Limit
10 J/cm2 @ 532nm, 10ns
RoHS
Compliant
1/4-Wave N-BK7 Window 25mm Sq. MgF2 Coating
#49-625
Dimensions (mm)
25.00 x 25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
MgF2 : ¼λ @ 550nm, Ravg ≤1.75% @ 400 - 700nm
Typical Energy Density Limit
10 J/cm2 @ 532nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 25mm Dia. NIR I Coating
#83-472
Diameter (mm)
25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
NIR I, Ravg ≤0.5% @ 600 - 1050nm
Typical Energy Density Limit
7 J/cm2 @ 1064nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 25mm Sq. NIR I Coating
#83-473
Dimensions (mm)
25.00 x 25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
NIR I, Ravg ≤0.5% @ 600 - 1050nm
Typical Energy Density Limit
7 J/cm2 @ 1064nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 25mm Sq. NIR I Coating
#83-478
Dimensions (mm)
25.00 x 25.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
NIR I, Ravg ≤0.5% @ 600 - 1050nm
Typical Energy Density Limit
7 J/cm2 @ 1064nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 30mm Dia. Uncoated
#45-579
Diameter (mm)
30.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
Uncoated
RoHS
Compliant
1/4-Wave N-BK7 Window 30mm Dia. VIS 0 Coating
#47-521
$62.50
Diameter (mm)
30.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS 0°, Ravg ≤0.4% @ 425 - 675mn
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Compliant
1/4-Wave N-BK7 Window 30mm Dia. VIS-NIR Coating
#48-445
Diameter (mm)
30.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS-NIR, Rabs ≤0.25% @ 880nmavg ≤1.25% @ 400 - 870nmavg ≤1.25% @ 890 - 1000nm
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Compliant
1/4-Wave N-BK7 Window 30mm Dia. MgF2 Coating
#45-580
Diameter (mm)
30.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
MgF2 : ¼λ @ 550nm, Ravg ≤1.75% @ 400 - 700nm
Typical Energy Density Limit
10 J/cm2 @ 532nm, 10ns
RoHS
Compliant
1/4-Wave N-BK7 Window 30mm Dia. NIR I Coating
#83-474
Diameter (mm)
30.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
4.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
NIR I, Ravg ≤0.5% @ 600 - 1050nm
Typical Energy Density Limit
7 J/cm2 @ 1064nm, 10ns
RoHS
Compliant
1/4-Wave N-BK7 Window 35mm Sq. Uncoated
#49-470
Dimensions (mm)
35.00 x 35.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
3.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
Uncoated
RoHS
Exempt
1/4-Wave N-BK7 Window 35mm Sq. VIS 0 Coating
#49-630
$77.50
Dimensions (mm)
35.00 x 35.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
3.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS 0°, Ravg ≤0.4% @ 425 - 675mn
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 35mm Sq. VIS-NIR Coating
#49-634
Dimensions (mm)
35.00 x 35.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
3.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
VIS-NIR, Rabs ≤0.25% @ 880nmavg ≤1.25% @ 400 - 870nmavg ≤1.25% @ 890 - 1000nm
Typical Energy Density Limit
5 J/cm2 @ 532nm, 10ns
RoHS
Exempt
1/4-Wave N-BK7 Window 35mm Sq. MgF2 Coating
#49-626
Dimensions (mm)
35.00 x 35.00
Dimensional Tolerance (mm)
+0.0/-0.25
Clear Aperture (%)
85
Thickness (mm)
3.00
Thickness Tolerance (mm)
±0.20
Surface Accuracy (λ)
1/4
Surface Quality
60-40
Parallelism (arcminutes)
1
Substrate
N-BK7
Coating
MgF2 : ¼λ @ 550nm, Ravg ≤1.75% @ 400 - 700nm
Typical Energy Density Limit
10 J/cm2 @ 532nm, 10ns
RoHS
Exempt
1/4λ N-BK7 Precision Windows
View Legend
