A wide field of view display device employs curved optical components for enhanced performance with a compact arrangement. A wide field of view display includes a curved display device; a first curved lens having a display side and an exit side, wherein the display side is facing the curved display device; a first plurality of Fresnel facets disposed on the display side of the first curved lens; a second curved lens having a display side and an exit side, wherein the display side is facing the exit side of the first curved lens; and a second plurality of Fresnel facets disposed on the display side of the second curved lens, wherein the first plurality of Fresnel facets is configured to focus light from the curved display device on the second plurality of Fresnel facets, and wherein the second plurality of Fresnel facets is configured to focus light from the first plurality of Fresnel facets on a central image point.

A system and method for generating compact light-field displays through varying optical depths provides digital content in a more effective and efficient manner. The system includes a field-evolving cavity with a cavity exit pupil, a relay mechanism, and a system enclosure with an enclosure exit pupil. The field-evolving cavity modifies the light-field displays before outputting the light-field displays with the cavity exit pupil. More specifically, the field-evolving cavity includes at least one display panel, which initially generates the light-field displays, and at least one optical-tuning mechanism, which subsequently modifies the light-field displays to varying optical depths. The system enclosure houses the field-evolving cavity and the relay mechanism. The relay mechanism directs the light-field displays from the cavity exit pupil to the enclosure exit pupil, which outputs the light-field displays to a user.

The present disclosure relates to a filter unit, a filter selection method, and an imaging device that allow continuously changing a transmittance of an ND filter and switching between filters to be performed more easily. A disk provided with a plurality of filters including an ND filter having a continuously variable transmittance is rotated to cause a filter corresponding to a rotational orientation of the disk among the plurality of filters provided on the disk to be arranged on an optical axis of incident light toward an image sensor. The present disclosure can be applied to, for example, a filter unit, an imaging device, electronic equipment, a filter selection method, a program, or the like.

A method for producing a volume hologram with at least one first area in a first color and at least one second area in a second color includes, providing a volume hologram layer made of a photopolymer; arranging a master with a surface structure on the volume hologram layer; exposing the master using coherent light, wherein light which is incident on at least one first partial area of the surface of the master is diffracted or reflected in the direction of the at least one first area of the volume hologram layer and light which is incident on at least one second partial area of the surface of the master is diffracted or reflected in the direction of the at least one second area of the volume hologram, and wherein the light diffracted or reflected by the first and second partial areas differs in at least one optical property.

Aspects of the present disclosure relate to haptic feedback systems and methods for use in head-worn computing systems. A head worn computer includes a frame adapted to hold a computer display in front of a user's eye, a processor adapted to present digital content in the computer display and to produce a haptic signal in coordination with the digital content display, and a haptic system including a plurality of haptic segments, wherein each of the haptic segments is individually controlled in coordination with the haptic signal.

A wearable display device according to an embodiment may comprise: a first prism, positioned in front of a user's eye, for controlling the path of an incident light and enabling the arrival of a virtual image to be displayed on the eye; a second prism, coupled to the first prism, for reducing distortion of a real image arriving at the user's eye; and a coating layer which is interposed between the first prism and the second prism and of which the brightness is controlled in inverse proportion to the ambient brightness, such that the visibility of the virtual image increases.

[Solving Means] A projector includes a first light-emitting side polarization plate, a second light-emitting side polarization plate, a third light-emitting side polarization plate, and a cross dichroic prism. The first light-emitting side polarization plate is arranged on a light-emitting side of a first liquid crystal lightbulb that modulates light of a first wavelength band. The second light-emitting side polarization plate is arranged on a light-emitting side of a second liquid crystal lightbulb that modulates light of a second wavelength band. The third light-emitting side polarization plate is arranged on a light-emitting side of a third liquid crystal lightbulb that modulates light of a third wavelength band. The liquid crystal lightbulb includes a first side surface that light of the first wavelength band enters and opposes the first light-emitting side polarization plate, a second side surface that light of the second wavelength band enters and opposes the second light-emitting side polarization plate, a third side surface that light of the third wavelength band enters and opposes the third light-emitting side polarization plate, and a fourth side surface from which synthetic light obtained from the light of the first wavelength band, the second wavelength band, and the third wavelength band is emitted. At least one of the first light-emitting side polarization plate, the second light-emitting side polarization plate, and the third light-emitting side polarization plate is tilted with respect to the opposing side surface.

An optical coherence tomography (OCT) system using partial mirrors is generally described. In an example, the OCT system includes a swept light source. The system further includes an interferometer into which light from the light source is directed and a detector configured to produce an imaging sample signal based on light received from the interferometer. The system also includes a partial mirror disposed over an aperture, wherein the partial mirror is configured to transmit light within a first wavelength range and reflect light within a second wavelength range.

An optical device includes a light source configured to provide illumination light and a waveguide. The waveguide has an input surface, an output surface distinct from and non-parallel to the input surface, and an output coupler. The waveguide is configured to receive, at the input surface, the illumination light provided by the light source and propagate the illumination light via total internal reflection. The waveguide is also configured to redirect, by the output coupler, the illumination light so that the illumination light is output from the output surface for illuminating a spatial light modulator.

An optical apparatus is configured to introduce light from an object to an image pickup element, and includes first, second, and third retardation plates, a polarizer, and a setter. The first retardation plate, the second retardation plate, and the polarizer are arranged in this order from a side of the object to a side of the image pickup element. The slow axis direction or the fast axis direction of the second retardation plate tilts to the slow axis direction or the fast axis direction of the first retardation plate. The setter sets the retardation of the second retardation plate according to the polarization component of the light from the object.