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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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Meniscus Lenses

Positive Meniscus Lenses are a convex-concave lens, but is thicker at the center than at the edges. They are felt polished and are used universally in the ophthalmic industry where convention dictates that lens power be specified in Diopters. Negative Meniscus Lenses are a convex-concave lens, but is thinner at the center than at the edges. Otherwise description is similar to Plano Concave lenses.

FAQ
Do you produce standard products or customized?

Mostly customized, we can produce your elements according to your drawing with detailed specifications.

What is your Min. and Max. dimension for spherical lenses?

Min. D2mm, Max. D200mm.

What is your high precision?

Surface quality 10-5, Flatness L/10, centration 30 arc sec, parallelism 1arc sec, angle tolerance 3arc sec.

What is your MOQ?

Generally no MOQ, from prototype to volume quantity, we support both.

What is the delivery time for CRYLIGHT?

Generally 4 weeks, for urgent parts we will help expedite. For complex products, we will confirm accordingly.

What payment methods do you accept?

We accept T/T bank transfer and credit card payment.

100% prepayment for new client and net 30 days for old customers.

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这里可以自定义设置

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.

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
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