摘要:
A method and apparatus are provided to compensate for variations in the alignment of a plurality of lasers 102, 104, 106. A controller 142 varies the time at which the lasers 102, 104, 106 are energized so that the laser light emitted therefrom is reflected from a scanning mirror 118 at varying times so that each of the beams of light is reflected along a substantially common path and delivered to a substantially common point.
摘要:
An apparatus is provided for controlling a laser projection device (LPD). The apparatus is comprised of a liquid crystal display controller, a laser projection display controller, and a laser projection display engine. The liquid crystal display controller is adapted to receive video signals indicative of a visual display and convert the video signals to control signals suitable for controlling a liquid crystal display panel. The laser projection device controller is adapted to receive the control signals from the liquid crystal display controller and use the control signals to control a laser projection display. The laser projection device engine is adapted to display an image under the control of the laser projection device controller.
摘要:
A method and apparatus are provided to controllably reduce power of a laser projection display (LPD) in response to detecting a variation in a viewing surface. During the operation of the LPD, a controller 142 monitors laser light being reflected from the viewing surface. Since the controller 142 “knows” the amount of power that the LPD is being instructed to deliver, it may compare the known power to the reflected laser light to determine if a foreign object may be in the path of the laser light, and therefore, affecting the magnitude of the laser light. The controller 142 responds to detecting such an event by reducing power to the lasers.
摘要:
A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color.
摘要:
A method and apparatus are provided to controllably reduce power of a laser projection display (LPD). Light is scanned from a laser onto a viewing surface to produce an image thereon, and power used by the laser is reduced used while scanning at least a portion of the viewing surface.
摘要:
A method and apparatus are provided for controlling the operation of a Laser Projection Display (LPD). Generally, the LPD is comprised of a laser, an optical system and a controller. The laser is adapted to emit a beam of laser light. The optical system is adapted to scan the beam of laser light on a display surface in a two-dimensional raster pattern. The controller is adapted to control the rate at which the laser beam is scanned to produce regions of varying resolution on the display surface. The controller is also adapted to present laser light onto the display surface within only selected portions of the two-dimensional raster scan pattern so that spaced apart image regions may be created.
摘要:
An acousto-optical modulator modulates a green laser beam, and generates a modulated non-diffracted beam and a modulated diffracted beam. A scanner sweeps the modulated diffracted green beam, as well as modulated red and blue beams, as a pattern of scan lines, each scan line having a number of pixels. A controller causes selected pixels along the scan lines to be illuminated, and rendered visible, by the diffracted green beam, the red beam and the blue beam to produce the image. The non-diffracted green beam is employed in a laser shut-down safety circuit.
摘要:
An arrangement for and a method of collecting and displaying information in real time along a line of sight from a human operator to remote targets located at variable distances therefrom and identifiable by machine-readable indicia. A two-dimensional image is automatically projected along the line of sight on the target alongside the indicia while maintaining the image size relatively constant over an extended range of working distances.
摘要:
A lightweight, compact image projection module, especially for mounting in a housing having a light-transmissive window, is operative for causing selected pixels in a raster pattern to be illuminated to produce an image of high resolution of VGA quality in color. The pixels are rendered symmetrical in cross-section by aligning a narrow dimension of a beam spot of a laser beam along scan lines of the raster pattern.