Electronic device with multi-element display illumination system

An electronic device comprising:

• light sources configured to produce illumination;
• a spatial light modulator configured to produce light by reflecting the illumination;
• and
• optics configured to redirect the light, wherein the optics impart the light with an off-axis roll off in intensity across a field of view of the light, the light sources are configured to compensate for the off-axis roll off in intensity produced by the optics, the light sources are configured to compensate for the off-axis roll off in intensity by producing the illumination with an intensity profile that varies across the field of view, and the intensity profile decreases away from a central axis of the field of view.

An electronic device comprising:

• light sources configured to produce illumination;
• a spatial light modulator configured to produce light by reflecting the illumination;
• optics configured to redirect the light, wherein
• the optics impart the light with an off-axis roll off in intensity across a field of view of the light, and
• the light sources are configured to compensate for the off-axis roll off in intensity produced by the optics;
• and
• one or more processors configured to provide image data to the spatial light modulator, the one or more processors being configured to further compensate for the off- axis roll off in intensity by pre-distorting the image data.

An electronic device comprising:

• an array of light sources configured to emit illumination;
• a spatial light modulator configured to generate reflected light based on the illumination;
• and
• optics configured to direct the reflected light, the array of light sources being configured to exhibit an intensity profile that has a variation across a field of view of the reflected light, wherein
• the optics impart the reflected light with an off-axis distortion across the field of view that at least partially reverses the variation in the intensity profile exhibited by the one or more light sources, and
• the one or more processors are configured to control the array of light sources to exhibit the intensity profile by performing an operation selected from the group consisting of:
• adjusting pulse width modulation of the light sources across the array, and
• adjusting current provided to the light sources across the array.