Patent ID: 11899211
Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
Field: Optics (Instruments)
Classification: CPC G  H | IPC F  G  H

Claim 15:
16. Enacted in a computer of a near-eye display device, a near-eye display method comprising:
parsing a digital image;
controlling a matrix of electronically controllable pixel elements of a spatial light modulator (SLM) configured to receive emission from a laser and direct the emission in spatially modulated form to a pupil-expansion optic, wherein the matrix is controlled such that the spatially modulated form of the emission projects an optical image corresponding to the digital image,
causing a drive circuit to drive periodic current including a train of current pulses through a gain structure while the optical image is projected, the current pulses having a predetermined pulse width selected to broaden the emission relative to an unmodulated emission of the laser, and
increasing or decreasing a separation between the current pulses of the predetermined pulse width, so as to control an average duty cycle of the periodic current and thereby provide setpoint power in a primary-color band.