Infrared (NIR) Objective Lens
◦It is the long working infinity correction function that is used to introduce a laser system and coaxial observation.
◦It is also used for the observation of infrared light.
◦PAL-20-NIR-LC00/PAL-20-NIR-HR-LC00/PAL-50-NIR-HR-LC00 include protective glass unit (t=1.8mm). The protective glass will help protect the objective lens from debris spattering and scattered by laser processing. The protective glass unit can be replaced.
◦These variety of objective lens can be used with a pulse laser of visible light such as 532nm. The damage threshold of each lens is 0.1J/cm2 at 532nm, 0.2J/cm2 at 1064nm (reference). (Laser pulse width 10nSec, repetition frequency 20Hz)
|Name||Infrared (NIR) Objective Lens|
|Standard Coatings Available||No|
|Image Label||Infrared (NIR) Objective Lens|
|Working Distance WD||15.1mm|
|Item name||MplanApo NIR 50x|
|Numerical aperture (NA)||0.45|
|Working distance (WD)||15.1mm|
|Focal length f||4mm|
|Real field of View (Eyepiece φ24mm)||φ0.48mm|
|Real field of View (Imaging device 1/2-inch)||0.10×0.13mm|
|Laser Damage Threshold<sup>*</sup>||0.2J/cm2 at 1064nm|