Meniscus Lenses

Model:	Meniscus Lenses
Brand:	DNDPHOTONICS
Origin:	Made In China
Category:	Electronics & Electricity / Electronic Instrument / Optical Lens & Instrument
Label:	Meniscus Lenses , Plano-convex Cylindr , Powell Lenses
Price:	US $1 / pc
Min. Order:	1 pc

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Product Description

Positive meniscus lenses is convex-concave lens thicker at the center than at the edges. They are used to minimize spherical aberration. When used in combination with another lens, it’s will shorten the focal length, and increase the NA of system.

Negative meniscus lenses is convex-concave lens thinner at the center than edges. They increase the divergence of the beam without introducing any significant spherical aberration. When used in combination with another lens, they will increase the focal length, and decrease the NA of the system.

Specifications:

Material:	Grade A optical glass or Fused Silica
Dimension Tolerance:	+0.0, -0.1mm
Center Thickness Tolerance:	±0.1mm
Paraxial Focal Length:	±2%
Surface quality:	60/40
Clear Aperture:	>85%
Surface Figure:	λ/4 @633nm
Centration:	3 arc minutes
Bevel:	<0.25mm×45°
Coating:	Upon requirement

Typical Sizes

Item No.	Φ(mm)	f(mm)	R1(mm)	R2(mm)	Tc(mm)	Te(mm)	Fb(mm)
Material	N-BK7
MNP201	25.4	100.0	33.42	89.95	4.0	2.39	96.01
MNP202	25.4	150.0	42.36	89.95	4.0	2.95	145.20
MNP203	25.4	200.0	48.75	89.95	3.5	2.72	194.51
MNP204	25.4	250.0	83.95	235.5	3.5	2.88	245.97
MNP205	25.4	300.0	94.19	235.5	3.5	2.98	296.27
MNP206	25.4	400.0	110.92	235.5	3.5	3.11	396.06
MNP207	25.4	500.0	124.17	235.5	3.5	3.19	496.16
MNP208	25.4	1000	278.34	600.00	3.5	3.30	993.7
MNN201	25.4	-100.0	89.95	32.51	3.0	4.68	-98.79
MNN202	25.4	-150.0	89.95	41.21	3.0	4.11	-148.06
MNN203	25.4	-200.0	89.95	47.64	3.0	3.82	-197.82
MNN204	25.4	-250.0	235.5	83.18	3.5	4.13	-248.62
MNN205	25.4	-300.0	235.5	93.33	3.5	4.03	-299.04
MNN206	25.4	-400.0	235.5	109.65	3.5	3.90	-397.33
MNN207	25.4	-500.0	235.5	122.74	3.5	3.82	-496.94
MNN208	25.4	-1000	600.00	277.16	3.0	3.1	-995.30