Patent ID: 8451195
Filing Date: 2013-05-28
Classification: G02B,G09G,H04N

Abstract:
1. A scanning beam display system, comprising: an optical module operable to produce a scanning beam of excitation light having optical pulses that are sequential in time and carry image information; a fluorescent screen which absorbs the excitation light and emits visible fluorescent light to produce images carried by the scanning beam, the fluorescent screen comprising servo reference marks; and an optical sensor positioned to receive a feedback optical signal generated by the servo reference marks under illumination of the scanning beam and to produce a monitor signal indicating a spatial alignment of the optical pulses on the fluorescent screen, wherein the optical module comprises a feedback control unit operable to adjust timing of the optical pulses carried by the scanning beam in response to the monitor signal to control the spatial alignment of spatial positions of the optical pulses on the fluorescent screen.