TEST AND INSPECTION
What we measure.
Optical, mechanical and environmental checks, run per lot and recorded against serial numbers.
Surface form
Interferometer
Image quality
MTF bench
Focus and EFL
EFL · FFD
Distortion
At 20° semi-field
Centration
Cemented groups
Night-vision test
Resolution · diopter range
Leak test
O-ring sealed parts
Thermal and humidity
Per programme