Meniscus Lens - Positive BK7

Positive Meniscus Lenses are a convex-concave lens, but is thicker at the center than at the edges.

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Moq:

1 Unit

Country Of Origin:

China

Lead Time:

4 weeks

Terms Of Delivery:

Fob Fuzhou

Terms Of Payment:

Net 30 Days By T/T

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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.

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.

PRODUCT PARAMETERS

Meniscus lens - front BK7

Item #	(mm)	f(mm)	R1	R2	Tc	Te	Fb
MNP1-201	25.4	100.0	33.42	89.95	4.0	2.39	96.01
MNP1-202	25.4	150.0	42.36	89.95	4.0	2.95	145.20
MNP1-203	25.4	200.0	48.75	89.95	3.5	2.72	194.51
MNP1-204	25.4	250.0	83.95	235.5	3.5	2.88	245.97
MNP1-205	25.4	300.0	94.19	235.5	3.5	2.98	296.27
MNP1-206	25.4	400.0	110.92	235.5	3.5	3.11	396.06
MNP1-207	25.4	500.0	124.17	235.5	3.5	3.19	496.16
MNP1-208	25.4	1000.0	278.34	600.00	3.5	3.30	993.7

Meniscus lens negative BK7

Item #	mm	f(mm)	R1	R2	Tc	Te	Fb
MNN1-201	25.4	-100.0	89.95	32.51	3.0	4.68	-98.79
MNN1-202	25.4	-150.0	89.95	41.21	3.0	4.11	-148.06
MNN1-203	25.4	-200.0	89.95	47.64	3.0	3.82	-197.82
MNN1-204	25.4	-250.0	235.5	83.18	3.5	4.13	-248.62
MNN1-205	25.4	-300.0	235.5	93.33	3.5	4.03	-299.04
MNN1-206	25.4	-400.0	235.5	109.65	3.5	3.90	-397.33
MNN1-207	25.4	-500.0	235.5	122.74	3.5	3.82	-496.94
MNN1-208	25.4	-1000.0	600.00	277.16	3.0	3.1	-995.30

Basic Information

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Plano Convex Lens

Plano Convex Lenses present a curved interface and a planar interface.
Plano Concave Lens

Plano Concave Lenses are manufactured with one concave surface and one plane surface.
Double Convex Lens

We also provide precision grade double convex lenses with tighter manufacturing tolerances.
Double Concave Lens

Double Concave Lenses are manufactured with both surfaces concave.

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