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  • N-BK7 Windows and H-K9L Windows

    Made from BK7 material, which has transparent range from 330-2100nm. The refractive index is 1.5168 at 587.6nm. The BK7 window has good performance over visible and near IR spectrum for most application.

  • High Precision Achromatic Waveplate

    Achromatic Waveplate Achromatic Waveplates(Retarders), AWP is composed of one piece of Crystal Quartz and one piece of Magnesium Fluoride, MgF2.

  • IR Windows Barium Fluoride BaF2 Window

    Barium fluoride (BaF2) shows good optical transmission over UV-IR windows in 0.15μm~12.5μm.

  • IR Windows Magnesium Fluoride MgF2 Windows

    MgF2 windows are used in the UV, visible and IR ranges, with approximately 94% transmission from 200 - 1000 nm, and approximately 95% transmission from 1-6µm

  • IR Windows Calcium fluoride CaF2 Windows

    CaF2 has transparent range from 170-7800nm. The refractive index is 1.399 at 5000nm. 1. Low absorption coefficient 2. High damage threshold, 3. Low Dispersion (with an Abbe Number of 95) 4. Low fluorescence 5. Excellent water, chemical, and heat resistance

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Menuscus Lens

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Positive meniscus lenses and Negative meniscus lenses

Positive meniscus lenses is convex-concave lens thicker at the center than at the edges, which frequently used for beam focusing applications.

Negative meniscus lenses is convex-concave lens thinner at the center than edges, which frequently used for beam expanding applications.

  • product orgin:

    China
  • shipping port:

    Fuzhou China
  • payment:

    T/T Payment, Western Union
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features

Positive meniscus lenses and Negative meniscus lenses


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.


1. Frequently Used for Beam Focusing Applications
2. Minimizes the Increase in Spherical Aberrations for Multi-Element Systems


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.


1. Frequently Used for Beam Expanding Applications
2. Minimizes the Increase in Spherical Aberrations for Multi-Element Systems


Specification:

Material:
Grade A optical glass or Fused Silica
Dimension Tolerance:
±0.1mm(Standard), ±0.05mm(High Precision)
Center Thickness Tolerance:
±0.1mm(Standard), ±0.05mm(High Precision)
Paraxial Focal Length:
±2%
Surface quality:
60/40(Standard), 20/10(High Precision)
Clear Aperture:
>85%
Surface Figure:
λ/2(Standard), λ/4(High Precision) @633nm
Centration:
3 arc minutes
Bevel:
<0.25mm×45°
Coating:
Upon requirement


Negative Meniscus LensesPositive Meniscus Lenses

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 33.42 89.95 4 2.39 96.01
MNP202 25.4 150 42.36 89.95 4 2.95 145.2
MNP203 25.4 200 48.75 89.95 3.5 2.72 194.51
MNP204 25.4 250 83.95 235.5 3.5 2.88 245.97
MNP205 25.4 300 94.19 235.5 3.5 2.98 296.27
MNP206 25.4 400 110.92 235.5 3.5 3.11 396.06
MNP207 25.4 500 124.17 235.5 3.5 3.19 496.16
MNP208 25.4 1000 278.34 600 3.5 3.3 993.7
MNN201 25.4 -100 89.95 32.51 3 4.68 -98.79
MNN202 25.4 -150 89.95 41.21 3 4.11 -148.06
MNN203 25.4 -200 89.95 47.64 3 3.82 -197.82
MNN204 25.4 -250 235.5 83.18 3.5 4.13 -248.62
MNN205 25.4 -300 235.5 93.33 3.5 4.03 -299.04
MNN206 25.4 -400 235.5 109.65 3.5 3.9 -397.33
MNN207 25.4 -500 235.5 122.74 3.5 3.82 -496.94
MNN208 25.4 -1000 600 277.16 3 3.1 -995.3


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