Air floating video information display system and stereo sensing apparatus used therein

An air floating video display system comprising:

• a video display apparatus configured to display a video;
• a light source apparatus;
• and
• a retroreflector configured to reflect a video light from the video display apparatus to display an air floating video that is a real image in air by the reflected light,
• wherein the light source apparatus includes:
• an optical member configured to reduce a divergence angle of a light from a point or surface light source;
• and
• a reflection surface configured to reflect the light from the light source to propagate it to the video display apparatus,
• wherein a first ranging apparatus in which a plurality of TOF (Time of Flight) systems each having a light source and a light receiver are arranged in a matrix and with which a plurality of divided areas of a space including the air floating video are sensed by a light from the light source of each TOF system is provided,
• wherein the light source light of the TOF system is emitted toward the air floating video,
• wherein the system further comprises a three-dimensional ranging system, and
• wherein a wavelength of a light source light of the TOF system provided in a ranging apparatus constituting the three-dimensional ranging system is a long wavelength of 900 (nm) or more.

An air floating video display system comprising:

• a video display apparatus configured to display a video;
• a light source apparatus;
• and
• a retroreflector configured to reflect a video light from the video display apparatus to display an air floating video that is a real image in air by the reflected light,
• wherein the light source apparatus includes:
• an optical member configured to reduce a divergence angle of a light from a point or surface light source;
• and
• a reflection surface configured to reflect the light from the light source to propagate it to the video display apparatus,
• wherein a first ranging apparatus in which a plurality of TOF (Time of Flight) systems each having a light source and a light receiver are arranged in a matrix and with which a plurality of divided areas of a space including the air floating video are sensed by a light from the light source of each TOF system is provided,
• wherein the light source light of the TOF system is emitted toward the air floating video,
• wherein the light source apparatus includes:
• a point or surface light source;
• a reflector configured to reflect the light from the light source;
• and
• a light guide configured to guide the light from the reflector toward a display panel, and
• wherein a reflection surface of the reflector has an asymmetrical shape with respect to an optical axis of the light emitted from the light source.