Innovation Photonics

Mid-IR Focusing Objectives 2 μm to 12 μm

InnPho’s Mid-IR Focusing Objectives are designed for maximum efficiency in coupling the output from a mid-IR source into single-mode or multimode IR transmitting bers.

  • ZnSe MicroLens
  • AR-AR in Mid-IR
  • Diffraction limited
  • Easy alignment using HeNe
  • Mounting RMS thread
  • 2 μm to 12 μm
Mid-IR Focusing Objectives

Mid-IR Focusing Objectives

Transimission vs Wavelength

Catalog Number Clear Aperture Numerical Aperture Working Distance Focal Length
LFO-5-6 5 mm 0.25 5.3 mm 6 mm
LFO-5-12 5 mm 0.13 11.5 mm 12 mm
LFO-5-18 5 mm 0.08 17.5 mm 18 mm

 

– – FOCAL SPOT DIAMETER (μm) – –
Beam
Dia (mm)
Focal Length (6, 12, 18 mm)
6 12 18 6 12 18 6 12 18
2.0 mm 15 30 46 23 46 69 30 61 91
3.0 mm 14 20 30 15 30 46 20 41 61
4.0 mm 32 15 23 32 23 34 32 30 46
λ = 4 μm λ = 6 μm λ = 8 μm

 

TRANSMISSION

The ZnSe lens in LFO-Series Objectives is Broadband AR (BBAR) coat- ed on both sides. Transmission from 2 μm to 12 μm is 90% to 96%.
See graph above.