Dr. Vladmir Pervak is invited by the Optical Society to give a half-day short course at the 15th Topical Meeting on Optical Interference Coatings in the area of: Phase Properties of Optical Coatings. The 2022 Conference will follow the tradition of the previous OIC conferences and will focus on the major topics and advances of optical interference coatings, including coating design, manufacturing, characterization and applications that range from the X-rays to FIR spectral regions. The OIC 2022 conference will be held on June 19-24, 2022 at the Whistler Convention Center, Whistler, British Columbia, Canada. More detailed information about the conference can be found at the conference website: www.osa.org