Achromatic Lens, NIR, 50.0 mm Diameter, 100.0 mm EFL, 750-1550 nm

The PAC20AR.16 Near IR Achromatic Lens is a 750 to 1550 nm antireflection coated, 1.99 inch (50.0 mm) diameter, N-LaK22 and N-SF6 achromatic doublet lens with an effective focal length of 100.0 mm. This achromat is computer optimized at infinite conjugate ratios for applications in the near-IR spectrum, producing the smallest spot size possible for polychromatic light sources between 750 to 1550 nm. Spherical and chromatic aberrations are minimized to provide superior performance. For most applications, diffraction-limited spot size can be achieved when using with monochromatic light sources of wavelength up to 2 µm. Common applications for these near IR achromatic lenses include Imaging, Microscopy, and various spectroscopic methods in the near IR spectrum.

Specifications

Technical Specs

Lens Type
Achromatic Doublet
Lens Shape
Plano-Convex
Diameter
50.0 mm
Antireflection Coating
750-1550 nm
Coating Type
NIR Multilayer
Coating Code
AR.16E
Damage Threshold
1.0 J/cm² @ 1064 nm, 10 ns , 10 Hz
Lens Material
N-LaK22/N-SF6
Surface Quality
60-40 scratch-dig
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5λ
Effective Focal Length (EFL)
100 mm
Back Focal Length (BFL)
87.86 mm
F/#
2

Radius 2
-59.74 mm
Radius 3
-494.70 mm
Edge Thickness (Te)
13.89 mm
Center Thickness (Tc)
20.0 mm
Thickness, Center 1
14.50 mm
Thickness, Center 2
5.50 mm
Design Wavelengths
880 nm
Centration
3-5 arcmin
Chamfers
0.30 mm
Chamfers Angle/Tolerance
45°
Diameter Tolerance
+0.0/-0.1 mm
Focal Length Tolerance
±2.0%
Center Thickness Tolerance
± 0.2 mm
Clear Aperture
49 mm

Lens Type
Achromatic Doublet
Lens Shape
Plano-Convex
Diameter
50.0 mm
Antireflection Coating
750-1550 nm
Coating Type
NIR Multilayer
Coating Code
AR.16E
Damage Threshold
1.0 J/cm² @ 1064 nm, 10 ns , 10 Hz
Lens Material
N-LaK22/N-SF6
Surface Quality
60-40 scratch-dig
Surface Accuracy, Irregularity
λ/4
Surface Accuracy, Power
1.5λ
Effective Focal Length (EFL)
100 mm
Back Focal Length (BFL)
87.86 mm
F/#
2

Radius 2
-59.74 mm
Radius 3
-494.70 mm
Edge Thickness (Te)
13.89 mm
Center Thickness (Tc)
20.0 mm
Thickness, Center 1
14.50 mm
Thickness, Center 2
5.50 mm
Design Wavelengths
880 nm
Centration
3-5 arcmin
Chamfers
0.30 mm
Chamfers Angle/Tolerance
45°
Diameter Tolerance
+0.0/-0.1 mm
Focal Length Tolerance
±2.0%
Center Thickness Tolerance
± 0.2 mm
Clear Aperture
49 mm

Resources & Downloads

3D Product Models

2D Product Drawings

PAC20AR.16 Zemax File(5 kB, ZMX)
Broadband-Near-IR-Achromatic-Lenses-Spec-Table.pdf(132.7 kB, PDF)

Other

PAC20AR.16 RoHS Certificate(703.5 kB, PDF)
AR.16E Raw Data.xlsx(74.3 kB, XLSX)

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