When should light guides be replaced?
- Illumination is low and replacing the lamp does not improve brightness
- Dark or uneven areas become visible in the field of view
- A section of the light guide becomes noticeably warmer than the rest of the guide
- It is 2-3 years old or has been in use 4000+ hours or 2 lamp changes
Liquid light guides are universally exposed to UV light which causes slow degradation in transmission properties. It is always a good idea to check your light guide if you notice a lower signal than normal.