Display

A display, comprising:

• a first display device, providing a first image light;
• a second display device, providing a second image light;
• a half mirror, having a first surface and a second surface opposite to each other, and spaced apart from the first display device and the second display device by a first distance and a second distance respectively, wherein the first distance is not equal to the second distance, the first image light is emitted to the first surface, and the second image light is emitted to the second surface;
• and
• a bifocal lens, spaced apart from the half mirror by a third distance and opposite to the first surface, wherein the bifocal lens has a first focal length and a second focal length different from each other, the first focal length is greater than a sum of the first distance and the third distance, and the second focal length is greater than a sum of the second distance and the third distance, wherein
• the first image light reaches the bifocal lens after being reflected on the first surface, and generates first magnification imaging according to the first focal length;
• the second image light reaches the bifocal lens after passing through the second surface, and generates second magnification imaging according to the second focal length;
• and the range of the first magnification imaging is not equal to the range of the second magnification imaging.