Projector having alignment optics and electronics

A method of hiding the effect of burnt out individual ones of a plurality of light emitting sources in a light projector, comprising the steps of:

• generating a super pixel defined by individual ones of the plurality of light emitting sources;
• and
• casting said super pixel onto a viewing surface to form a plurality of dots arranged in a m by n matrix array, a portion of said viewing surface being defined by a matrix array of M by N individually addressable pixel locations;
• moving said super pixel within said matrix array of M by N individually addressable pixel locations so that each individual one of said plurality of dots overwrites every individual addressable pixel locations disposed in said matrix array of M by N individually addressable pixel locations.

A method of aligning individual ones of a plurality of light-emitting sources in a projector having addressable pixel locations and scanning optics, comprising the steps of:

• selecting an individual one of the plurality of light-emitting sources for alignment;
• establishing when in time a single dot of light produced by the selected individual one of the plurality of light-emitting sources should appear at a specific addressable pixel location in the projector addressable pixel locations;
• determining when in time said single dot of light appeared at said specific addressable pixel location;
• adjusting the on-off time of the selected individual one of the plurality of light-emitting sources to change when in time said single dot of light appears at said specific addressable pixel location to coincide with when in time said single dot of light produced by the selected individual one of the plurality of light-emitting sources should appear at said specific addressable pixel location if said single dot of light did not appear when it should have appeared;
• and
• repeating the steps of selecting, establishing, determining and adjusting if said single dot of light did appear when it should have appeared until each individual one of the plurality of light-emitting sources has been selected for alignment purposes.

A system including a projector engine comprising:

• information storage electronics;
• a light engine including multiple light emitting sources;
• control electronics that control the light-emitting sources to enable the light emitting sources to form spots on a viewing medium;
• and
• sensor and computational electronics that receive signals from the multiple light emitting sources and generate alignment information and store the alignment information on the information storage electronics, wherein the information storage electronics utilizes the alignment information to provide relative alignment between the spots on the viewing medium.

A method of adjusting the scanning pattern of a light projector, comprising the steps of:

• storing encoder signals generated by individual ones of a plurality of polygon mirrors;
• determining from the stored encoder signals the rotational speed of the individual ones of said plurality of polygon mirrors;
• and
• providing feedback signals that cause the rotational speed of the individual ones of said plurality of polygon mirror to be maintained, increased or decreased to achieve a desired scanning pattern.