NIR Objective / PAL-NIR

This is a high NA infinity corrected objective lens for laser processing (femtosecond laser and fundamental of YAG laser). You can also observe the laser beam coaxially with a laser processed surface that is designed to reduce the aberration of the visible wavelength.

With its long working distance and field curvature corrected, its natural observation image is obtained to the periphery of the visual field.
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)

Objective lens list

Specifications

Part Number	Item Name	Magnification	Focal length	NA	Working Distance WD	Resolution (λ=550nm)	Focal Depth (λ=550nm)	Real field of view (Eyepiece φ24mm)	Real field of View (Imaging device 1/2-inch)	Weight	Compatible cover glass
PAL-5-NIR	PlanApo NIR 5x	5x	40mm	0.15	44mm	1.83μm	±12.2μm	φ4.8mm	0.96×1.28mm	0.24kg	-
PAL-10-NIR-A	PlanApo NIR 10x	10x	20mm	0.3	31mm	0.92μm	±3.1μm	φ2.4mm	0.48×0.64mm	0.29kg	-
PAL-20-NIR-LC00	PlanApo NIR 20x	20x	10mm	0.4	20.2mm	0.69μm	±1.7μm	φ1.2mm	0.24×0.32mm	0.36kg	-
PAL-50-NIR-L	PlanApo NIR 50x	50x	4mm	0.45	15.1mm	0.61μm	±1.4μm	φ0.48mm	0.10×0.13mm	0.34kg	-
PAL-100-NIR	PlanApo NIR 100x	100x	2mm	0.53	12.14mm	0.52μm	±1.0μm	φ0.24mm	0.05×0.06mm	0.34kg	-
PAL-20-NIR-HR-LC00	PlanApo NIR HR 20x	20x	10mm	0.45	20mm	0.61μm	±1.4μm	φ1.2mm	0.24×0.32mm	0.44kg	PAL-NIR-PG
PAL-50-NIR-HR-LC00	PlanApo NIR HR 50x	50x	4mm	0.67	10mm	0.41μm	±0.6μm	φ0.48mm	0.10×0.13mm	0.48kg	PAL-NIR-PG
PAL-50-NIR-HR	PlanApo NIR HR 50x	50x	4mm	0.8	3.7mm	0.34μm	±0.4μm	φ0.48mm	0.10×0.13mm	0.5kg	-
PAL-100-NIR-HR	PlanApo NIR HR 100x	100x	2mm	0.7	10mm	0.39μm	±0.6μm	φ0.24mm	0.05×0.06mm	0.48kg	-

PAL-NIR-PG is protective glass unit to be replaced when contaminated or damaged by powder scattered by laser processing.
Protective glass for PAL-20-NIR-HR-LC00 and PAL-50-NIR-HR-LC00.Replacement protective glass exclusively for PAL-20-NIR-HR-LC00 and PAL-50-NIR-HR-LC00.