mini-lsa.jpgMini Lens Stress Analyzer (mini-LSA)


EVEN THE BEST OF LENSES CAN GO BAD. Thermal stress, mechanical stress, and contamination can all cause a lens to fail. When that happens, your business can suffer from costly downtime or, in the event of catastrophic lens failure, even costlier laser system repairs. Conversely, you don’t want to discard a perfectly usable lens that may only need to be cleaned to return it to peak performance. The question, then, is how can you determine when a lens is truly in need of replacement?
II-VI Infrared has your answer. Our NEW, portable mini Lens Stress Analyzers enable you to see lens stress before catastrophic lens failure occurs. Or see that an underperforming lens need only be cleaned, rather than discarded.

Mini-LSA är ett enkelt instrument att se hur linsen mår helt enkelt. För att använda Mini-LSA gör så här:


  1. Find the nearest computer screen. 
  2. Clip the Mini LSA onto your phone, facing out. Turn on the camera app. 
  3. Place the lens in front of the screen and simply rotate the phone. 
  4. As you rotate the phone into cross-polarization, the fluorescent light computerscreen Will Appear to go dark, and any stress in your optic Will Appear As shown below.

Actual image of stressed lens as seen through mini LSA

optic3.png optic4.png
No apparent stress.
May just need to be cleaned.
Moderate stress.
Should be replaced.
Severe lens stress.
Must be replaced to prevent catastrophic lens failure and possible system damage
Catastrophic lens failure and possible system damage.