Meniscus Lens

Meniscus Lens


Meniscus lens has one surface convex and the other surface concave. They are used to change the focal length of another lens. Meniscus lenses can be used with another lens to produce longer or shorter focal lengths.

Common Specification
Material BK7/Fused Silica
Dimension Tolerance +0.0/-0.1 mm
Thickness Tolerance  ± 0.1 mm
Paraxial Focal Length ± 2%
Clear Aperture > 90%
Centration 3 arc minutes
Irregularity lambda/4 at 632.8 nm 
Surface Quality S/D 60-40
Bevel 0.2mmx45°
Coating According to the requirement
Part Number Material ф
(mm)
f
(mm)
R1
(mm)
R2
(mm)
Tc
(mm)
Te
(mm)
fb
(mm)
MNX-BK7-D25.4-4.0CT-F100 BK7 25.4 100.0 33.72 90 4 2.5 97.5
MNX-BK7-D25.4-4.0CT-F125 BK7 25.4 125.0 38.47 90 4 2.8 121.8
MNX-BK7-D25.4-4.0CT-F150 BK7 25.4 150.0 42.52 90 4 3 146.3
MNX-BK7-D25.4-4.0CT-F175 BK7 25.4 175.0 46.05 90 4 3.1 171.2
MNX-BK7-D25.4-3.5CT-F200 BK7 25.4 200.0 49.03 90 3.5 2.8 197
MNX-BK7-D25.4-3.0CT-F-100 BK7 25.4 -100.0 90 32.59 3 4.5 -99.2
MNX-BK7-D25.4-3.0CT-F-125 BK7 25.4 -125.0 90 37.26 3 4.2 -123.7