A brief internet search reveals that this is a complex issue which has been thoroughly researched for the use of optical coatings in space. Here is a quote:
Effects on Optical Coatings
Among the first coatings used in space in 1958 were solar cells to produce power, and emission control tiles to minimize temperature extremes. Both of the first satellites were spherical with reflective aluminum coatings and solar cells. Thick glass tiles with a silver coating on their rear faces were used to control the temperature of the spacecraft. Glass absorbs infrared and re-emits at longer wavelengths providing cooling. The silver mirror doubled the absorption path and thus the emittance while reflecting shorter wavelengths. The first space optical coatings used for band-pass filters were constructed of thermally-evaporated soft materials such as ZnS and MgF2. Exposure to the space environment containing ionizing radiation, solar UV, atomic oxygen and high vacuum revealed the unstable operation of those coatings. In addition to humid-vacuum shifts in wavelength properties, filters, anti-reflective (AR) coatings and other coatings suffered radiation-induced transmission loss that was especially pronounced at short wavelengths.”
from here: https://materion.com...00D7D3B554A5842
You might want to check with the manufacturer of the sterilizer about this. The devil will likely be in the details: eg, how much energy does your unit emit? What exactly are the coatings made of? Etc..