A display unit is present in a space different from an input and output screen displayed in a three-dimensional space, and a control unit displays the input and output screen as an optical image formation of light progressing in a direction of a user so that no one other than the user is able to photograph the input and output screen.

A cursor-manipulating device comprising a light diffusing surface, for example a Lambertian surface, covering a cavity containing a light source and an image sensor, wherein the cursor-manipulating device is a touch pad like device. The image detector senses the touching of the outer surface of the cursor-manipulating device with a pointing device, for example a finger, in which the outer surface comprises a light diffusing surface that allows the image sensor to capture and track an image of the pointing device touching the light diffusing surface in order to control a cursor of an electronic device. Multiple touching devices, like fingers, can be used to control simultaneous events on the screen of an electronic device, e.g. a notebook PC, cellular phone, game device and a GPS device.

A cursor-manipulating device comprising a light diffusing surface, for example a Lambertian surface, covering a cavity containing a light source and an image sensor, wherein the cursor-manipulating device is a touch pad like device. The image detector senses the touching of the outer surface of the cursor-manipulating device with a pointing device, for example a finger, in which the outer surface comprises a light diffusing surface that allows the image sensor to capture and track an image of the pointing device touching the light diffusing surface in order to control a cursor of an electronic device. Multiple touching devices, like fingers, can be used to control simultaneous events on the screen of an electronic device, e.g. a notebook PC, cellular phone, game device and a GPS device.

A display apparatus having a screen on which recording by a user's touch can be performed is provided. The display apparatus includes a display configured to provide the screen, an accommodator configured to accommodate the display and having a screen aperture formed thereon with a predetermined depth to expose the screen, a touch position sensor configured to sense the position of a touch device that is used by a user when a distance between the screen and the touch device is shorter than the predetermined depth, a vibration sensor mounted on the display and configured to sense vibration of the display due to a contact of the touch device with the screen, and a controller configured to control the display to perform recording on a point of the screen that corresponds to the sensed position of the touch device when the vibration is sensed.

A pixel circuit and a display apparatus, the pixel circuit comprises a pixel compensation module, a light emitting module and a touch detection module. By integrating the pixel compensation module and the touch detection module into the pixel circuit, and making the pixel compensation module and the touch detection module share data voltage lines and scan signal lines, a number of signal lines can be reduced, so that a size of space between pixels can be decreased greatly and a cost of an IC is also reduced, which can achieve a higher pixel density.

A pixel circuit and a display apparatus, the pixel circuit comprises a pixel compensation module, a light emitting module and a touch detection module. By integrating the pixel compensation module and the touch detection module into the pixel circuit, and making the pixel compensation module and the touch detection module share data voltage lines and scan signal lines, a number of signal lines can be reduced, so that a size of space between pixels can be decreased greatly and a cost of an IC is also reduced, which can achieve a higher pixel density.

An optical apparatus includes a touch substrate; a waveguide layer arranged on the touch substrate, the waveguide layer including a plurality of waveguides; an optical output structure arranged on the waveguide layer and configured to output light propagating in the plurality of waveguides at touched locations on the touch substrate; a gap layer arranged to provide a predetermined gap between the waveguide layer and the optical output structure; and an optical system, which projects light output by the optical output structure.

A 3D silhouette sensing system is described which comprises a stereo camera and a light source. In an embodiment, a 3D sensing module triggers the capture of pairs of images by the stereo camera at the same time that the light source illuminates the scene. A series of pairs of images may be captured at a predefined frame rate. Each pair of images is then analyzed to track both a retroreflector in the scene, which can be moved relative to the stereo camera, and an object which is between the retroreflector and the stereo camera and therefore partially occludes the retroreflector. In processing the image pairs, silhouettes are extracted for each of the retroreflector and the object and these are used to generate a 3D contour for each of the retroreflector and object.

An optical fingerprint identification system includes a cover, a light emitting layer, an optical layer, an image sensor and a base that are sequentially disposed from top to bottom. The cover has a fingerprint contact surface on top. The image sensor has an image surface. The optical layer includes a first array layer and a second array layer, and the first array layer is stacked on top of the second array layer. The first array layer and the second array layer respectively include a plurality of first array lens elements and a plurality of second array lens elements respectively arranged at equal intervals in a first direction. Each of the first array lens elements and a corresponding second array lens element of the second array layer are coaxial along an optical axis and form an imaging unit.

A flat illuminator having substantially reduced or no diffractive artifacts may be realized by using a partially reflective, embedded layer of extraction features, such as partially reflective facets or partially reflective bumpy surface, buried with substantially matching refractive index on both sides of layer. Implementations may be used in creating infrared (IR) illumination, either as a frontlight unit (FLU) or backlight unit (BLU), as well as for supporting a floating image of IR illumination in a retroreflective, reconvergent imaging or a retroimaging application.