Scanning laser projection display devices and methods for projecting one or more images onto a surface with a light-scanning optical fiber

摘要

Image projection devices, high-speed fiber scanned displays and related methods for projecting an image onto a surface and interfacing with the projected image are provided. A method for projecting one or more images and obtaining feedback with an optical input-output assembly is provided. The input-output assembly comprising a light-scanning optical fiber and a sensor. The method includes generating a sequence of light in response to one or more image representations and a scan pattern of the optical fiber, articulating the optical fiber in the scan pattern, projecting the sequence of light from the articulated optical fiber, and generating a feedback signal with the sensor in response to reflections of the sequence of light.

主权项

1. An improved method for projecting one or more images onto a surface with a projection device comprising a light-scanning optical fiber, the method comprising:
generating a sequence of light in response to one or more image representations and a drive signal determining a scan pattern of the optical fiber; articulating the optical fiber in the scan pattern based on the drive signal, wherein a distal tip of the fiber has a variable velocity; and projecting the generated sequence of light from the articulated optical fiber to form the one or more images on the surface, wherein the fiber is scanned within a Q factor of a resonant frequency of the optical fiber, wherein the generating of the sequence of light comprises varying a light intensity based on the drive signal such that the light intensity is varied based on both a position in the one or more image representations and a positional rate of change of the optical fiber in the scan pattern and wherein the intensity increases based on the variable velocity increasing.