asymmetric lens distortion
Lens distortion parameters
lens-distortion correction
tangential lens distortion
magnetic field distortion calibration
optical distortion calibration
product distribution distortion
Poisson-Poisson distribution Poisson-Binomial distribution Compound distribution
Poisson—Poisson分布Poisson－二项分布复合分布
corneal lens（lenses） lens
object lens objective lens
objective lens object lens
plane-concave lens (=plano-concave lens)
plane-convex lens (=plano lens)