System and method to deploy active dampening for lens ringing and vibration

摘要

Described herein are methods, apparatus, and computer readable medium to autofocus a lens of an imaging device. Parameters are received indicating a lens position. Lens actuator characteristics are determined. Lens damping parameters may be determined based, at least in part, on the input parameters and the lens actuator characteristics. In some aspects, lens damping parameters include a lens movement step size and a time delay between each step. In some aspects, the lens damping parameters include damping parameters for a plurality of regions of lens movement. Lens movement parameters are determined based, at least in part, on the input parameters and the lens damping parameters. The lens is then autofocused by moving it according to the lens movement parameters.

主权项

1. A method of auto-focusing a lens, comprising:
determining a current lens position; determining a target lens position; determining a direction of lens movement based on at least the current lens position and the target lens position; determining a magnitude of lens movement based on at least the current lens position and the target lens position; determining lens movement damping parameters based on at least the direction and magnitude of lens movement; determining lens movement parameters based on at least the lens movement damping parameters; and moving the lens based on the lens movement parameters to autofocus the lens.