A beamsplitter is an optical component that splits an incoming light beam into two separate beams by reflecting a portion of the light and transmitting the rest. The “T90/R10” notation refers to the transmittance and reflectance properties of the beamsplitter.

In this case, “T90” means that the beamsplitter transmits 90% of the incoming light, while “R10” means that it reflects 10% of the incoming light. So when an incident beam of light hits the beamsplitter, 90% of the light passes through the beamsplitter while 10% is reflected off at a 90-degree angle.

 

Coligh’s standard beam splitter plate:

• Type: Beamsplitter transmission 90% and reflect 10% (T=90%±5%)
• Angle of incidence: 45°
• Working wavelength: 400-1100nm
• Thickness: 1.0mm, 1.1mm, 0.5mm, 0.7mm
• Surface quality: 80/50, 60/40
• Size: smaller than 100*100mm

Custom option:

• Transmission and reflect ratio: Depend on client’s request
• 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