Products used in medical, aerospace, military and other fields.
Materials; variety of flint glass, crown glass, calcium fluoride optical glass

Focal length: ± 5mm - ± 1000mm ± 1%
OD: 5mm - 200mm ± 0.1mm
Center thickness tolerance: ± 0.05mm
Center deviation: ≤ 3 min
Surface accuracy: λ / 4 @
Surface quality: 40/20
Effective aperture: 90%
Coating: antireflection film, splitting film, reflective film