Imaging and optical data
Field of view (FOV)	25° × 19° (31° diagonally)
Minimum focus distance	250 mm (9.84 in.)
Focal length	24.6 mm (0.97 in.)
Spatial resolution (IFOV)	0.69 mrad
Lens identification	Automatic
F-number	1.0
Number of lenses	3 (3 asph)
MTF @ 70% of FOV	Normal requirements (52%)
Distortion	3%

Physical data
Weight	0.160 kg (0.353 lb.)
Size (L × D)	41 × 67 mm (1.61 × 2.64 in.)
Front lens diameter	32 mm (1.26 in.)

Product Name

IR lens, 25° FOV, 24.6mm (T197922)

URL Key

t197922-ir-lens

What's In The Box

Lens
Lens case
Front lens cap
Rear lens cap

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

IR lens, 25° FOV, 24.6mm (T197922)

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