Our IR Filters are deposited by sputtering, using our ‘Rockard’ © technology, traditionally thermal evaporation has been used for IR filters. Our technology ensures the following:
- Highly durable coatings suitable for the toughest environments.
- Extremely low temperature shift.
- Reduced passband ripple for an even response.
- High blocking efficiency to increase signal to noise ratio.
A brief overview of IR Filter deposition technology is outlined below. Sputter deposition has a process energy approximately 3x that of thermal evaporation, this is responsible for the densely packed structure. This structure leads to superior environmental properties as outlined above.