Projection optical engine, electronic device, and projection imaging method

An electronic device, comprising a projection optical engine, wherein the projection optical engine comprises:

• a first display panel, wherein the first display panel comprises a plurality of pixels of a first color, and each pixel of the plurality of pixels of the first color comprises an active light-emitting device;
• a second display panel, wherein the second display panel comprises a plurality of pixels of a second color, and each pixel of the plurality of pixels of the second color comprises an active light-emitting device;
• a light combination apparatus, wherein the light combination apparatus is configured to:
• combine, as combined light, light emitted by one pixel of the first color and light emitted by one pixel of the second color;
• and
• emit the combined light;
• a pixel expansion apparatus;
• and
• an optical engine lens, wherein:
• light emitted by the light combination apparatus is imaged on an imaging plane after passing through the pixel expansion apparatus and the optical engine lens;
• the pixel expansion apparatus is configured to enable the light emitted by the light combination apparatus to be imaged at different locations on the imaging plane at different moments;
• and
• a total quantity of pixels disposed in the first display panel is less than display resolution of an image formed by the first display panel on the imaging plane, and a total quantity of pixels disposed in the second display panel is less than display resolution of an image formed by the second display panel on the imaging plane.

A projection imaging method, wherein the projection imaging method is applied to a projection optical engine, and

• the projection optical engine comprises:
• a first display panel, wherein the first display panel comprises a plurality of pixels of a first color, and each pixel of the plurality of pixels of the first color comprises an active light-emitting device;
• a second display panel, wherein the second display panel comprises a plurality of pixels of a second color, and each pixel of the plurality of pixels of the second color comprises an active light-emitting device;
• a light combination apparatus;
• a pixel expansion apparatus;
• and
• an optical engine lens;
• the projection imaging method comprises:
• combining, as combined light, by using the light combination apparatus, light emitted by the pixel of the first color and light emitted by the pixel of the second color;
• and
• emitting the combined light;
• wherein:
• the projection optical engine works in a plurality of cycles, and each cycle comprises a first moment and a second moment;
• at the first moment, light emitted by the light combination apparatus is imaged in a first location region on an imaging plane after passing through the pixel expansion apparatus and the optical engine lens;
• and
• at the second moment, light emitted by the light combination apparatus is imaged in a second location region on the imaging plane after passing through the pixel expansion apparatus and the optical engine lens, wherein the second location region is offset relative to the first location region.