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1. (WO2017039927) DYNAMIC CONSTANCY OF BRIGHTNESS OR SIZE OF PROJECTED CONTENT IN A SCANNING DISPLAY SYSTEM

Pub. No.:    WO/2017/039927    International Application No.:    PCT/US2016/045352
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Thu Aug 04 01:59:59 CEST 2016
IPC: G03B 21/14
G03B 21/20
Applicants: MICROVISION, INC.
Inventors: HONKANEN, Jari
VISWANATHAN, P. Selvan
Title: DYNAMIC CONSTANCY OF BRIGHTNESS OR SIZE OF PROJECTED CONTENT IN A SCANNING DISPLAY SYSTEM
Abstract:
A scanning projector includes a MEMS device (160) with a scanning mirror (162) that sweeps a beam in two dimensions. Actuating circuits receive scan angle information and provide signal stimulus to the MEMS device to control the amount of mirror deflection on two axes. The scan angle information may be modified to maintain a constant image size, a constant image brightness, and/or to correct for keystone distortion.