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  • Product Details
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


  • Q
    Do you produce standard products or customized?
    Mostly customized, we can produce your elements according to your drawing with detailed specifications.
  • Q
    What is your Min. and Max. dimension for spherical lenses?
    Min. D2mm, Max. D200mm.
  • Q
    What is your high precision?
    Surface quality 10-5, Flatness L/10, centration 30 arc sec, parallelism 1arc sec, angle tolerance 3arc sec.
  • Q
    What is your MOQ?
    Generally no MOQ, from prototype to volume quantity, we support both.
  • Q
    What is the delivery time for CRYLIGHT?
    Generally 4 weeks, for urgent parts we will help expedite. For complex products, we will confirm accordingly.
  • Q
    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.
PRODUCT FEATURES


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


Meniscus lens - front 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



Meniscus lens negative 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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