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Meniscus Lens - Positive BK7

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Meniscus Lens - Positive BK7
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Material:
BK7
Design Wavelength:
546.1nm,n=1.518721
Diameter Tolerance:
+0.0/-0.1mm
Paraxial Focal Length:
±2%
Centration:
3arcminutes
Surface Figure:
l/4@633nm
Surface Quality:
60/40
Clear Aperture:
>80%
Bevel:
<0.25mmX45°
Coating:
Uncoated
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B站不支持优惠卷

Moq: 1 Unit

Country Of Origin: China

Lead Time: 4weeks

Terms Of Delivery: Fob Fuzhou

Terms Of Payment: Net 30 Days By T/t


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The Positive Meniscus Lenses are a convex-concave lens

01

but is thicker at the center than at the edges

02

They are felt polished and are used universally in the ophthalmic industry where convention dictates that lens power be specified in Diopters.

Product parameters

半月板镜片-正面 BK7



 

Item #(mm)f(mm)R1R2 TcTeFb
MNP1-20125.4100.033.4289.954.02.3996.01
MNP1-20225.4150.042.3689.954.02.95145.20
MNP1-20325.4200.048.7589.953.52.72194.51
MNP1-20425.4250.083.95235.53.52.88245.97
MNP1-20525.4300.094.19235.53.52.98296.27
MNP1-20625.4400.0110.92235.53.53.11396.06
MNP1-20725.4500.0124.17235.53.53.19496.16
MNP1-20825.41000.0278.34600.003.53.30993.7

半月板镜片-负片 BK7



 

Item #mm
f(mm)R1R2TcTeFb
MNN1-20125.4-100.089.9532.513.04.68-98.79
MNN1-20225.4-150.089.9541.213.04.11-148.06
MNN1-20325.4-200.089.9547.643.03.82-197.82
MNN1-20425.4-250.0235.583.183.54.13-248.62
MNN1-20525.4-300.0235.593.333.54.03-299.04
MNN1-20625.4-400.0235.5109.653.53.90-397.33
MNN1-20725.4-500.0235.5122.743.53.82-496.94
MNN1-20825.4-1000.0600.00277.163.03.1-995.30

Product Message

 We welcome you to contact us for more information and look forward to working with you ! 

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