Partial Reflective Coating(PR)  

Single Wavelength and Partial Reflective Coatings (SPR)
When a narrow wavelength radiation is incident on SPR coating,part of the radiation is reflected and the other part is transmitted.This coating always show a high reflectivity for S-polarization radiation and high transmission for P-polarization radiation.The main application of this coating is for a beamsplitter with 45 angle of incidence.

Broadband Partial Reflective Coatings (BPR)
BPR coating has similar performance to that of SPR coatings.However,BPR coating can split the incident radiation over a wide spectrum,not SPR.