Method and system to control the focus depth of projected images

An image combiner system, comprising:

• a 2D image projector;
• a 2D to 3D image converter that receives a 2D projected image from the 2D image projector and converts the 2D projected image to a 3D projected image;
• and
• an image combiner that receives the 3D projected image from the 2D to 3D image converter and combines the 3D projected image with a 3D real world image;
• wherein the 2D to 3D image converter comprises a reflective LCD pixel array and a reflective screen, the reflective LCD pixel array positioned in front of the reflective screen relative to the 2D image projector to initially receive the 2D projected image from the 2D image projector,
• and the reflective LCD pixel array comprises a plurality of LCD pixel shutters, each of the LCD pixel shutters is programmable to either a closed position where the LCD pixel shutter is reflective and reflects a portion of the 2D projected image toward the image combiner, or an open position where the LCD pixel shutter is transparent and passes a portion of the 2D projected image toward the reflective screen to be reflected thereby toward the image combiner, such that portions of the 2D projected image reflected by the LCD pixel shutters have a shorter optical path length than portions of the 2D projected image reflected by the reflective screen to convert the 2D projected image into the 3D projected image provided to the image combiner.