A near eye display system having an image display panel, a prism assembly comprising a first and second element and a structure such as a eye wear glasses frame. The front and rear surfaces of the first and second elements are aligned and bonded to form the prism assembly. A partially-reflective coating is applied to the interface of the first and second elements to define a beam-splitter interface. The image display panel is disposed near an upper optical region such as a refracting surface of the first element. The lower edge of the second element opposite the beam-splitter interface is a coated reflective surface mirror. The display panel, the optical region and the optically reflective surface are configured to provide compactness and to avoid the break of symmetry. The system accommodates large inter pupil distance (IPD) variation and left/right eye scanning motion.

A display device and a display method are provided. The display device includes a first screen and a first reflector on a light emission side of the first screen; the first screen and the first reflector are in a first light path; the display device further includes a second screen and a second reflector on a light emission side of the second screen; the second screen and the second reflector are in a second light path; the first light path and the second light path converge in a first position.

In one embodiment, an electronic display assembly includes a sensor array located on one side of a circuit board and an electronic display array located on an opposite side of the circuit board from the sensor array. The sensor array includes a plurality of sensor pixel units. Each sensor pixel unit includes a plurality of sensor pixels. The electronic display array includes a plurality of display pixel units. Each display pixel unit includes a plurality of display pixels. Each particular one of the plurality of sensor pixel units is mapped to a corresponding one of the plurality of display pixel units such that display pixels of each particular one of the plurality of display pixel units display light corresponding to light captured by sensor pixels of its mapped sensor pixel unit.

A method for controlling the transparency level of a transparent displaying device arranged to display one or more virtual objects, the method comprising the steps of: obtaining a gaze point of a user; obtaining a position of at least one virtual object displayed by the displaying device; determining whether the attention of the user is directed to the virtual object based on the obtained gaze point; and if so, adjusting a transparency level of the displaying device. A system operative for controlling the transparency level in a displaying device, as well as a displaying device comprising such a system is also disclosed.

A light field projector device is described which outputs a light field. The projector has a projector base with a projection optical system configured to output light rays to form a projected image, a collimating optical system configured for collimation of the projected image light rays to form a second projected image, which is directed to a display optical system to produce a light field image. Light field projector devices may be used individually or in combination with one or more other projectors which can be arranged to form a direct projection light field display. The arrangement of light field projector devices may have an individual or shared display optical system. The projector device is designed to provide high pixel density, providing an image that looks crisp and unpixellated.

Optical adaptive viewport display systems and methods are provided. One such optical adaptive viewport display system has an adaptive pupil device which is optical coupled to an optical combiner. The adaptive pupil device is optically couplable to an image projector and is configured to select a sub-pupil from the pupil of the projector. The selected sub-pupil is optically relayed by relay optics from the adaptive pupil device to an eyebox. The relay optics includes an optical combiner. The sub-pupil size and position is selected by the adaptive pupil device so that an optical image spot beam from the sub-pupil and reflected by the optical combiner on to the eye box has a diameter at the eyebox such that the virtual image, as seen by a human eye disposed at the eyebox, is hyperfocused.

An imaging optical system according to the present disclosure includes: an aperture stop; an image-forming optical system that causes an image to be formed toward an imaging plane of an image sensor; and an optical phase modulator that includes a substance having a birefringence index, and gives two pupil functions to the image-forming optical system. The following conditional expressions are satisfied:

1≤(2×L×tan(w)+D)/D<1.4   (1)

λ/4*0.75<Re<λ/4*1.1   (2), where L: a distance between the aperture stop and the optical phase modulator; D: an aperture diameter (diameter) of the aperture stop; w: a maximum angle of incidence of a principal light ray that enters the aperture stop; λ: a wavelength of light; and Re: phase retardation caused by birefringence of the optical phase modulator.

An endoscope includes in order from an object side, an objective optical system, an optical-path splitter, an image sensor, and an image processor. A λ/4 wavelength plate is disposed between the objective optical system and the splitter. The splitter includes first and second prisms, and has a beam splitting surface at which the first prism and the second prism are brought into close contact. The splitter splits light at the beam splitting surface, into a first optical path through which P-polarized light is transmitted and a second optical path through which S-polarized light is reflected. The first and second prisms are slid relative to one another along the beam splitting surface to adjust optical path lengths of the first and second optical paths, and are disposed at positions to cancel an amount of shift in focusing positions of extraordinary and ordinary light, and satisfy specific conditional expressions.

In order to provide an optical device for clearly implementing augmented reality provided from a display unit, regardless of a change in a focal point of an outer mirror through which a user views, the present invention comprises: the display unit for emitting an optical beam displaying an image; transparent glass through which external light passes and which forms the path of the optical beam emitted by the display unit; and a pinhole mirror disposed to the glass, and disposed on the path of the optical beam emitted by the display unit, so as to reflect the optical beam emitted by the display unit, wherein the pinhole mirror has a polygonal shape and has an area less than that of the pupil so that an image formed by the optical beam emitted by the display unit overlaps with an image formed by the external light having been transmitted through the glass.

An imaging system and a method of creating composite images are provided. The imaging system includes one or more lens assemblies coupled to a sensor. When reflected light from an object enters the imaging system, incident light on the metalens filter systems creates filtered light, which is turned into composite images by the corresponding sensors. Each metalens filter system focuses the light into a specific wavelength, creating the metalens images. The metalens images are sent to the processor, wherein the processor combines the metalens images into one or more composite images. The metalens images are combined into a composite image, and the composite image has reduced chromatic aberrations.