The present invention describes an image display apparatus for directing an image towards an observer. The apparatus comprises a source of image point rays; a collimating device configured to collimate image point rays to produce collimated image rays; and, a prism sheet configured to receive the collimated image rays. The prism sheet comprises an array of micro-prisms, each micro-prism having two reflective facets arranged such that each collimated image ray is reflected off one facet and then an adjacent facet. Reflection from the second facet reorients the collimated image rays towards an image observation zone. The collimated image rays from an upper portion of the prism sheet converge with collimated image rays from a lower portion of the prism sheet within the image observation zone. The present invention also describes a method for directing an image towards an observer.

The present invention describes an image display apparatus for directing an image towards an observer. The apparatus comprises a source of image point rays; a collimating device configured to collimate image point rays to produce collimated image rays; and, a prism sheet configured to receive the collimated image rays. The prism sheet comprises an array of micro-prisms, each micro-prism having two reflective facets arranged such that each collimated image ray is reflected off one facet and then an adjacent facet. Reflection from the second facet reorients the collimated image rays towards an image observation zone. The collimated image rays from an upper portion of the prism sheet converge with collimated image rays from a lower portion of the prism sheet within the image observation zone. The present invention also describes a method for directing an image towards an observer.

When an optical element is transparent, an observer is enabled to visually recognize a stereoscopic image having a stereoscopic effect. A display method for a stereoscopic image, using a display device provided with a transparent light guide plate, includes: emitting light to be recognized by the observer as a stereoscopic image (I1) from an optical element; and displaying the stereoscopic image (I1) on a stereoscopic image forming plane (P1) not parallel to an outgoing surface (21) of the optical element. In the display method, the observer is able to visually recognize a rear surface side of the display device through the optical element.

An image display device includes: an input unit into which image signals are inputted, the image signals being outputted from image capturing pixels disposed in correspondence to image capturing micro-lenses, each of the image capturing pixels receiving light that has passed through a corresponding one of the image capturing micro-lenses; display micro-lenses; display pixels that emit light for forming a three-dimensional image to each of the display micro-lenses, the display pixels being disposed in correspondence to the display micro-lenses; and a generator that generates display image data that includes three-dimensional information, based upon the image signals inputted into the input unit. The generator allocates the image signals outputted from the image capturing pixels to the display pixels arranged at symmetrical positions in a predetermined direction, using a pseudo-optical axis of each of the display micro-lenses as a reference.

An image display device includes: an input unit into which image signals are inputted, the image signals being outputted from image capturing pixels disposed in correspondence to image capturing micro-lenses, each of the image capturing pixels receiving light that has passed through a corresponding one of the image capturing micro-lenses; display micro-lenses; display pixels that emit light for forming a three-dimensional image to each of the display micro-lenses, the display pixels being disposed in correspondence to the display micro-lenses; and a generator that generates display image data that includes three-dimensional information, based upon the image signals inputted into the input unit. The generator allocates the image signals outputted from the image capturing pixels to the display pixels arranged at symmetrical positions in a predetermined direction, using a pseudo-optical axis of each of the display micro-lenses as a reference.

A three-dimensional display device includes a display panel, a shutter panel, an obtainer, an input unit, and a controller. The display panel includes subpixels that display a parallax image. The obtainer obtains an illuminance level. The input unit receives a position of a pupil. The controller causes a set of subpixels included in the subpixels to display a black image based on the illuminance level. The controller determines an origin position. The origin position is a position of the pupil for a viewable section to have a center aligning with a center of a set of consecutive subpixels in an interocular direction. The set of consecutive subpixels is included in the subpixels and displaying the first image or the second image corresponding to the viewable section. The controller controls the display panel based on a displacement of the pupil from the origin position in the interocular direction.

A display device includes: a first display unit that displays a non-directional display image which is invariant regardless of a viewing direction of an observer; a second display unit that is disposed on a side opposite to an outer surface of the first display unit and has a plurality of pixels two-dimensionally arranged to display a display image having a different directional property in accordance with the viewing direction of the observer; an optical element array that is disposed in parallel with a light emission surface of the second display unit between the outer surface of the first display unit and the second display unit, in which a plurality of optical elements are arranged respectively corresponding to a predetermined unit of pixels among the plurality of pixels; and a driving unit that turns on a predetermined pixel among the plurality of pixels of the second display unit.

A method for manufacturing a stereoscopic image forming device includes a process of molding, from a first transparent resin, molding base materials 22 each including inclined surfaces 17 and vertical surfaces 18 on one side of a transparent plate member 16, a process of manufacturing a pair of intermediate base materials 28 by forming mirror surfaces on the vertical surfaces 18 of the respective molding base materials 22, and a process of manufacturing first and second optical control panels 13 and 14 integrated together by making the pair of intermediate base materials 28 face each other so that their vertical surfaces 18 are orthogonal to each other in a plan view, and joining together the intermediate base materials by filling the grooves 19 with a second transparent resin with a lower melting point than and a refractive index equal or approximate to the first transparent resin.

A magnetically shielded room reducing pressure felt by a person inside includes an upper shielding body, a side periphery shielding body, and a lower shielding body, all of which define a magnetically shielded inner space. A magnifying lens is located in the upper shielding body. The magnifying lens can magnify and project an incident image from outside to a range of one inner side surface of the magnetically shielded room. so that the range should be 50% or more of the area of the one inner side surface. The range includes most of the area above a line of sight of a person in the magnetically shielded room. The magnifying lens is provided at a position closer to the one inner side surface as a projection target of the lens than the other inner side surface as a non-projection target facing the one inner side surface as the projection target.

A magnetically shielded room reducing pressure felt by a person inside includes an upper shielding body, a side periphery shielding body, and a lower shielding body, all of which define a magnetically shielded inner space. A magnifying lens is located in the upper shielding body. The magnifying lens can magnify and project an incident image from outside to a range of one inner side surface of the magnetically shielded room. so that the range should be 50% or more of the area of the one inner side surface. The range includes most of the area above a line of sight of a person in the magnetically shielded room. The magnifying lens is provided at a position closer to the one inner side surface as a projection target of the lens than the other inner side surface as a non-projection target facing the one inner side surface as the projection target.