EFL=125mm , Cemented Achromatic Doublets (ACD)
EFL=125mm , Cemented Achromatic Doublets (ACD)
EFL = 125mm
Specification1:
AR Coating = 420-680nm
Material = H-K9L&H-F4
R1 , R2 , R3 = 86.1mm, 45.39mm, 143.88mm
Tc1 , Tc2 = 4.8mm , 3.3mm
Specification2:
AR Coating = Rmax<0.5%Ravg<0.3%@420-680nm
Material = H-K9L&H-F4
R1 , R2 , R3 = 86.1mm, 45.39mm, 143.88mm
Tc1 , Tc2 = 4.8mm , 3.3mm
Specification3:
AR Coating = MGF2@550nm
Material = H-K9L&H-ZF2
R1 , R2 , R3 = 76.92mm, 55.48mm, 162.59mm
Tc1 , Tc2 = 6.5mm , 4.5mm
Specification4:
AR Coating = R<0.5% 420-680nm
Material = H-K9L&H-F4
R1 , R2 , R3 = 86.1mm, 45.39mm, 143.88mm
Tc1 , Tc2 = 7.5mm , 6mm
Specification5:
AR Coating = MGF2 @587.6nm
Material = H-K9L&H-ZF2
R1 , R2 , R3 = 76.812mm, 55.621mm, 162.722mm
Tc1 , Tc2 = 8.4mm , 6mm
SKU:
Common Specification
Common Specification
Legend
Legend
- Dia. = Diameter
- R = Radius of Curvature
- ET = Edge Thickness
- EFL = Effective Focal Length
- CT = Center Thickness
- P = Principle Point
- BFL = Back Focal Length
Benefit of Achromatic Doublets
An achromatic lens is far superior to a simple lens for multi-color "white light" imaging. The two elements composing an achromatic lens (literally, "a lens with no color") are paired together for their ability to correct the color separation inherent in glass. Having eliminated the problematic chromatic aberrations, an achromatic lens becomes the most cost-efficient means for good polychromatic illumination and imaging. Refer to Figure 8 for an illustration of this concept.