Imaging and optical data
Field of view (FOV)	32 × 24 mm (40 mm diagonally)
Magnifying factor	2.9×
Working distance	84 mm
Depth of field	0.65 mm
Focal length	78 mm
Spatial resolution (IFOV)	50 µm
Lens identification	Manual
F-number	1.0
Number of lenses	2 (2 asph)
MTF @ 70% of FOV	Normal requirements (52%)
Distortion	3%
Lens note	The close-up lens is mounted on the 25° lens

Physical data
Weight	0.197 kg (0.43 lb.)
Size (L × D)	32 × 67 mm
Front lens diameter	53 mm

Product Name

Close-up IR lens, 2.9x (50 µm) with case (T198059)

URL Key

t198059-close-up-ir-lens

What's In The Box

Lens
Front lens cap
Rear lens cap
Case
Instruction for mounting close-up lenses

Lens Comparison

Lens Options
	IR Lens , 7° FOV, 88.9mm (T198165)	IR lens, 15° FOV, 41.3mm (T197914)	IR lens, 25° FOV, 24.6mm (T197922)	IR lens, 45° FOV, 13.1mm (T197915)	IR lens, 80° FOV, 6.5mm (T198065)	Close-up IR lens, 5.8x (100 µm) (T198060)	Close-up IR lens, 1.5x (25 µm) (T198066)
Imaging and Optical Data
Field of View (FoV)	7°_(H)×5.3°_(V) _{(8.7° diagonally)}	15°_(H)×11°_(V) _{(19° diagonally)}	25°_(H)×19°_(V) _{(31° diagonally)}	45°_(H)×34°_(V) _{(55° diagonally)}	80°_(H)×64.4°_(V) _{( 92.8° diagonal)}	64°_(H)×48°_(V) _{(80 mm diagonally)}	16°_(H)×12°_(V) _{(20 mm diagonally)}
Minimum focus distance	2.0 m (6.6 ft.)	500 mm (19.69 in.)	250 mm (9.84 in.)	150 mm (5.91 in.)	65 mm (2.6 in.)
Magnifying factor						1.5x	5.8×
Working Distance						172 mm	46 mm
Depth of Field						2.8 mm	0.21 mm
Focal length	88.9mm (3.5 in.)	41.3 mm (1.63 in.)	24.6 mm (0.97 in.)	13.1 mm (0.52 in.)	6.5 mm (0.26 in.)	149 mm	62 mm
Spatial resolution (IFOV)	0.19 mrad	0.41 mrad	0.69 mrad	1.30 mrad	2.62 mrad	100 µm	25 µm
Lens identification	Automatic	Automatic	Automatic	Automatic	Automatic	Manual	Automatic
F-number	1.3	1.0	1.0	1.0	1.0	1.0	1.1
Number of lenses	3 (3 asph)	3 (3 asph)	3 (3 asph)	3 (3 asph)	5 (5 asph)	2 (2 asph)	4 (4 asph)
MTF @ 70% of FOV	Normal requirements (52%)
Distortion	3%	3%	3%	3%	5%	3%	<3%
Lens note:						The close-up lens is mounted on the 25° lens
Physical data
Weight	0.88 kg (1.94 lb.)	0.190 kg (0.419 lb.)	0.160 kg (0.353 lb.)	0.209 kg (0.461 lb.)	0.428 kg (0.944 lb.)	0.176 kg (0.39 lb.)	0.48 kg (1.1 lb.)
Size (L×D)	96×126 mm (3.78×4.96 in.), excluding support	47×67 mm (1.85×2.64 in.)	41×67 mm (1.61×2.64 in.)	50×67 mm (1.97×2.64 in.)	126×67 mm (4.96×2.64 in.)	28×67 mm	86×67 mm
Front lens diameter	96 mm (3.78 in.)	52 mm (2.05 in.)	32 mm (1.26 in.)	30 mm (1.18 in.)	25 mm 0.98 in.)	53 mm	52 mm
EAN-13	_{7332558005798}	_{7332558004449}	_{7332558004432}	_{7332558004463}	_{7332558004418}	_73325585545	_73325585552

Close-up IR lens, 2.9x (50 µm) with case (T198059)

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