Achromatic Lenses

NEACL-6.25-7.5M

1
Negative achromatic lens (MgF2 coated)
Estimate separately
Classification Negative achromatic lens (NEACL)
Coating MgF2 coated
External form D(mm) φ6.25
f(mm) -7.5
Material N-BaF10/N-SF10
Design Wavelength DWL 587.6nm
YESRoHS対応状況

Product documentation

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Description

Consisting of two optical elements cemented together, negative achromats are corrected for color and on-axis aberrations. Used predominantly as Barlow lenses to extend focal lengths, they are often combined with positive achromatic mirror systems and imaging lenses.
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Specifications

Classification Negative achromatic lens (NEACL)
Coating MgF2 coated
External form D(mm) φ6.25
f(mm) -7.5
B.f(mm) -9.9
t1(mm) 5
CT1(mm) 1
CT2(mm) 3
R1(mm) -4.6
R2(mm) 4.6
R3(mm) ∞
Material N-BaF10/N-SF10
Surface quality 40-20
Clear Aperture(mm) [Dia.] -1.0
Externals Tolerance(mm) 0/-0.10
Enter Thickness Tolerance(mm) ±0.2
Centering(mm) 3′
Bevel MAX 0.25
Design Wavelength DWL 587.6nm
Focal Length Tolerance(mm) ±2％
Chromatic aberration correction wavelength C-line（656.3nm）、F-line（486.1nm）
Edge Thickness ET Reference
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Curve(FOR REFERENCE ONLY)

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Specification drawings(or pictures)

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