An IR cut 650nm filter is a type of optical filter that blocks or reduces the amount of infrared (IR) light passing through it, while allowing visible light to pass through. The “650nm” designation refers to the filter’s cutoff wavelength, which is around 650 nanometers.

These filters are commonly used in digital cameras and other imaging devices to improve color accuracy and reduce the amount of unwanted IR light that can cause image distortion or color shifts. By blocking the IR light, the filter can help to produce more accurate and natural-looking colors in photos and videos.

 

Coligh’s stock standard 650nm IR cut filter:

• Type: IR cut off filter
• Angle of incidence: 0°
• Wavelength cut off : 650nm+/-10nm
• Working wavelength: 400-650nm@Tave>94% & Tmax<2% 700-1000nm
• Thickness: 1.0mm, 1.1mm, 0.5mm, 0.7mm
• Surface quality: 80/50, 60/40
• Size: smaller than 100*100mm

Custom option:

• Cut on and cut off wavelength: custom
• Working wavelength: according to client’s request
• Material and thickness: according to client’s request
• Surface quality: 40/20 is in option
• Size: Any size round or square smaller than 100*100mm