There are several discussions looking for IR lighting, most of the cheap stuff leaves you with hot spots and without 50 to make even lighting they are hard to use. I have some pricy but very good wide angle pretty even lighting solutions. They are from santec, prices are from a reseller and will date fast I guess, you may find a cheaper source- check the angles and distance they are actually accurate.
IR-180GD
Santec Indoor IR LED illuminator, 850nm, 180°, geschikt voor ruimte tot 100m2, 12/24V
138,00
IR-12DN
Santec IR LED illuminator, 845nm, 45m range, angle 40°, 230VAC
529,00
IR-13DN
Santec IR LED illuminator, 845nm, 35m range, angle 80°, 230VAC
559,00
IR-35DN
Santec IR LED illuminator, 845nm, 75m range, angle 80°, 230VAC
869,00
IR-70DN
Santec IR LED illuminator, 845nm, 100m range, angle 40°, 230VAC
829,00
IR-60D
Santec IR LED illuminator, 845nm, 100m range, angle 80°, 230VAC
1098,00
IR-100D
Santec IR LED illuminator, 845nm, 150m range, angle 40°, 230VAC
989,00