Provided an imaging apparatus including a first optical device, a second optical device disposed such that light transmitted through the first optical device is incident on the second optical device, and a third optical device disposed such that light transmitted through the second optical device is incident on the third optical device, wherein at least one of the first optical device, the second optical device, and the third optical device includes a plurality of nanostructures, and heights of at least two nanostructures of the plurality of nanostructures are different from each other.

A method of fabricating an imaging system as well as to a corresponding imaging system. The method includes providing a substrate; and forming, by means of a 3D-printing technique, a 3D structure on the substrate, wherein the forming of the 3D structure includes forming a stack of at least two diffractive optical elements in a single printing step.

Provided is a waveguide-type display device including a waveguide, an input coupler provided on the waveguide and configured to transmit an image to travel into the waveguide, an output coupler provided on the waveguide and configured to output the image traveling in the waveguide to an outside of the waveguide, and a field-of-view (FOV) expander configured to output an image having an expanded FOV by deflecting and outputting the image output from the output coupler in a certain direction based on polarization characteristics of the image.

A focusing device includes a substrate and a plurality of scatterers provided at both sides of the substrate. The scatterers on the both sides of the focusing device may correct geometric aberration, and thus, a field of view (FOV) of the focusing device may be widened.

Provided in an illumination device including a display panel including a first surface configured to display an image, a second surface opposite to the first surface, a plurality of display pixels disposed between the first surface and the second surface, and a transmission window configured to transmit light incident on the second surface through the first surface, a light source disposed at the second surface of the display panel and configured to emit light to an object toward the display panel, and a light deliverer disposed between the light source and the display panel, the light deliverer configured to deliver the light emitted from the light source to the object as flood illumination through the transmission window.

Provided an imaging apparatus including a first optical device, a second optical device disposed such that light transmitted through the first optical device is incident on the second optical device, and a third optical device disposed such that light transmitted through the second optical device is incident on the third optical device, wherein at least one of the first optical device, the second optical device, and the third optical device includes a plurality of nanostructures, and heights of at least two nanostructures of the plurality of nanostructures are different from each other.

According to examples, a system for detection, analysis and correction of disparities in display systems utilizing one or more disparity sensing port is described. The system may include a processor and a memory storing instructions. In addition, the system may include a first lens including a first waveguide for displaying a first image and a second lens including a second waveguide for displaying a second image. Furthermore, the system may include a first projector associated with the first lens to propagate first display light associated with the first image, a second projector associated with the second lens to propagate second display light associated with the second image and a disparity sensing port to receive the first display light and the second display light to determine a disparity associated with the first image and the second image.

A security device includes a plurality of diffractive surface elements arranged on a carrier element. A surface covered by the diffractive surface elements on the carrier element can occupy at least a partial region of the carrier element. Each individual diffractive surface element can have a three-dimensional surface structure. A portion of the plurality of the diffractive surface elements can form a first surface element group including the portion of the plurality of diffractive surface elements, and an orientation of the diffractive surface elements in the first surface element group can be matched to each other wherein together they make a single first image point of an associated first symbol to be represented visible to an observer under particular observation conditions.

An image sensing device includes a pixel array configured to include a first pixel group and a second pixel group that are contiguous to each other, each of the first pixel group and second pixel group including a plurality of imaging pixels to convert light into pixel signals, and a light field lens array disposed over the pixel array to direct light to the imaging pixels and configured as a moveable structure that is operable to move between a first position and a second position in a horizontal direction by a predetermined distance corresponding to a width of the first pixel group or a width of the second pixel group, the light field lens array configured to include one or more lens regions each including a light field lens and one or more open regions formed without the light field lens to enable both light filed imaging and conventional imaging.

A method for displaying an image viewable by an eye, the image being projected from a portable head worn display, comprises steps of: emitting a plurality of light beams of wavelengths that differ amongst the light beams; directing the plurality of light beams to a scanning mirror; modulating in intensity each one of the plurality of light beams in accordance with intensity information provided from the image, whereby the intensity is representative of a pixel value within the image; scanning the plurality of light beams in two distinct axes with the scanning mirror to form the image; and redirecting the plurality of light beams to the eye using a holographic optical element acting as a reflector of the light beams, whereby the redirecting is dependent on the wavelength of the light beam, to create for each light beam an exit pupil at the eye that is spatially separated from the exit pupils of the other light beams.