Electronically scanned beam display

A scanning beam display responsive to an image signal having a plurality of components, comprising:

• a first light source that emits a first beam of light along a first vector the first beam of light having an intensity defined by a first of the components;
• a second light source that emits a second beam of light along a second vector intersecting the first vector at a first location, the second beam of light having an intensity defined by a second of the components;
• and
• a scanner at the first location that receives the first and second light beams and redirects the first and second light beams toward an image field such that the first light beam strikes a first pixel area of the image field at a first time and a second light beam strikes the first pixel area at a second time following the first time.

A method of producing a pixel timing clock, comprising the sets of:

• generating a chirped frequency component as a base clock signal with a first circuit;
• generating a phase correction component with a second circuit;
• and
• combining the frequency component and the phase correction component to produce the pixel timing clock.

A method of addressing optical distortion in a scanning system, comprising the steps of:

• determining a base frequency chirped pixel clock;
• determining a desired pixel clock that offsets the optical distortion;
• and
• adjusting the base frequency chirped pixel clock toward the desired pixel clock.

A method of correcting optical aberrations in a scanning beam system having a periodic pattern of scanning including a plurality of scan lines, comprising the steps of:

• determining for each of the scan lines a respective aberration;
• determining a period of scanning of the periodic scan;
• for each determined respective aberration, chirping a signal with a frequency pattern corresponding to the determined aberration;
• constructing from the chirped signal a pixel clock;
• and
• modulating the scanning beam according to a timing responsive to the pixel clock.

A display responsive to an image signal to produce an image having a plurality of wavelengths in an image field, comprising:

• a first light source responsive to a first control signal to emit a first light beam of a first wavelength along a first beam path;
• a second light source responsive to a second control signal to emit a second light beam of a second wavelength along a second beam path that substantially converges with the first beam path;
• a scanner positioned in the first and second light paths and oriented to direct the first light beam through a first scan path in the image field and to direct the second light beam through a second scan path in the image field, the first and second scan paths being substantially overlapping in the image field, with the second beam trailing the first beam by a first lag angle;
• an electronic control system responsive to a first color component corresponding to the first wavelength of the image signal to produce the first control signal and responsive to a second color component of the image signal to produce the second control signal, the second control signal lagging the first control signal by a delay corresponding to the first lag angle.