| The relation of occlusion between the real image and the virtual image is essentially different. |
| A virtual image display provides a realistic impression to the simulator pilot because the image seems to be a substantial distance from the simulator. |
| The virtual image is an image that holds the planes of past not actualized in representation. |
| The predistortion function is the inverse of the field distortion function for the optics, so that the virtual image seen by the eye matches the image in the virtual screen buffer. |
| A straight line in the virtual image buffer is predistorted into a curved line on the display screen, which is distorted by the optics into a line that is seen as straight. |
| This point lies on a virtual plane where the rest of the virtual image also appears to exist. |
