Display apparatus for vehicle and display method

A display apparatus for vehicle comprising:

• an image projector configured to project a light flux including an image having a display object toward a one eye of an image viewer;
• and
• a position detector configured to detect the one eye of the image viewer,
• the image projector being configured to change a size of the display object in the image on the basis of a position of the one eye detected by the position detector, moving subject parallax of the image viewer calculated from the position of the one eye detected by the position detector, and a depth presenting target position of the image, wherein
• when a distance from the image viewer to the depth presenting target position is assumed to be d2, and a movement distance of a detecting position of the one eye detected is assumed to be s0, the image projector changes the size of the display object on the basis of a distance d3=(s02+d22)1/2 and on the basis of the d2.

A display apparatus for vehicle comprising:

• an image projector configured to project a light flux including an image having a display object toward a one eye of an image viewer;
• and
• a position detector configured to detect the one eye of the image viewer,
• the image projector changing a position of the display object in the image on the basis of a position of the one eye detected by the position detector, moving subject parallax of the image viewer calculated from the position of the one eye detected by the position detector, and a depth presenting target position of the image,
• the image projector makes the image viewer view the image via a reflector which reflects the light flux to projects the light flux toward the one eye of the image viewer, wherein
• when a distance from the image viewer to a position of a virtual image of the image formed by the reflector is assumed to be d1, a distance from the image viewer to the depth presenting target position of the image is assumed to be d2, and a movement distance of a detecting position of the one eye detected is assumed to be s0, the image projector changes the position of the display object in the image by a distance s1=s0(1−d1/d2).

A display method comprising:

• detecting a position of a one eye of an image viewer;
• and
• changing a shape of a display object in an image on the basis of the position of the one eye detected, moving subject parallax of the image viewer calculated from the position of the one eye detected and a depth presenting target position of the image to project a light flux including the image toward the one eye of the image viewer, wherein
• when a distance from the image viewer to the depth presenting target position is assumed to be d2, and a movement distance of a detecting position of the one eye detected is assumed to be s0, the changing the shape includes changing the shape of the display object on the basis of one of two acute angles of a right triangle having a line segment of the d2 and a line segment of the s0 as an adjacent side and an opposite side.

A display method comprising:

• detecting a position of a one eye of an image viewer;
• and
• changing a size of a display object in an image on the basis of the position of the one eye detected, moving subject parallax of the image viewer calculated from the position of the one eye detected and a depth presenting target position of the image to project a light flux including the image toward the one eye of the image viewer, wherein
• when a distance from the image viewer to the depth presenting target position is assumed to be d2, and a movement distance of a detecting position of the one eye detected is assumed to be s0, the changing the size includes changing the size of the display object on the basis of a distance d3=(s02+d22)1/2 and on the basis of the d2.

A display method comprising:

• detecting a position of a one eye of an image viewer;
• and
• changing a position of a display object in an image on the basis of the position of the one eye detected moving subject parallax of the image viewer calculated from the position of the one eye detected and a depth presenting target position of the image to project a light flux including the image toward the one eye of the image viewer,
• the projecting the light flux includes making the image viewer view the image via a reflector which reflects the light flux to projects the light flux toward the one eye of the image viewer, wherein
• when a distance from the image viewer to a position of a virtual image of the image formed by the reflector is assumed to be d1, a distance from the image viewer to the depth presenting target position of the image is assumed to be d2, and a movement distance of a detecting position of the one eye detected is assumed to be s0, the changing includes changing the position of the display object in the image by a distance s1=s0(1−d1/d2).