A 610nm longpass filter is an optical filter that transmits light with wavelengths greater than 610nm while blocking shorter wavelengths. This filter is designed to provide high blocking at shorter wavelengths, typically with an optical density of several orders of magnitude, while still allowing the transmission of longer wavelengths with minimal attenuation.

Coligh’s stock standard 610nm longpass filter:

• Type: longpass filter
• Coating: Hard coated
• Angle of incidence: 0°
• Wavelength cut on tolerance :610+/-10nm
• Blocking depth: >=OD4
• Transmission: >90%@620-1100nm
• 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