An example waveguide can include a polymer layer having substantially optically transparent material with first and second major surfaces configured such that light containing image information can propagate through the polymer layer being guided therein by reflecting from the first and second major surfaces via total internal reflection. The first surface can include first smaller and second larger surface portions monolithically integrated with the polymer layer and with each other. The first smaller surface portion can include at least a part of an in-coupling optical element configured to couple light incident on the in-coupling optical element into the polymer layer for propagation therethrough by reflection from the second major surface and the second larger surface portion of the first major surface.

A near-eye display system that employs a volume holographic element containing distinct but overlapped planar volume gratings, each corresponding to a subset of pixels in the display. The volume gratings are illuminated using light incident from angles, and at wavelengths, that match the conical diffraction conditions for each grating, thereby achieving both high diffraction efficiency and a wide field of view. A single volume grating can thus be used to display thousands of pixels independently with high efficiency.

An image delivery system (IDS) comprising: a first waveguide comprising an input aperture for receiving an input virtual image provided by a display engine and a first plurality of first facets positioned to reflect light from the received input virtual image out from the first waveguide; a second waveguide configured to receive the light reflected out from the first waveguide and comprising a second plurality of second facets positioned to reflect the received light out from the second waveguide to project an output virtual image responsive to the input into an eye motion box (EMB); and a partially reflective coating formed on each facet selected from a number of different partially reflective coatings less than a total number of facets equal to a sum of the number of facets in the first and second pluralities; wherein the output virtual image exhibits a fidelity of 80% or better.

A fiber optic cable transition assembly for transitioning a plurality of optical fibers from a multi-fiber cable to a plurality of furcation tubes. The fiber optic transition assembly has a housing with a front opening and an internal passageway that is defined by a wall and a narrow region. The housing is adapted to receive epoxy adhesive. The fiber optic transition assembly has a boot that is positioned at least partially inside the housing for receiving the multi-fiber cable to provide strain relief to the plurality of optical fibers extending therethrough. The fiber optic transition assembly has a plug supported by the boot and retained by the housing to prevent epoxy adhesive from entering the multi-fiber cable.

There is provided an optical device, including an input aperture, an output aperture, at least first and second light-transmitting substrates each having two major surfaces and edges, an input surface for coupling light waves into the substrate for effecting total internal reflection inside the substrate, and an output surface for coupling light waves out of the substrate, a major surface of the first substrate is attached to a major surface of the second substrate and the input surface of the first substrate is a partially reflecting surface, such that part of the light waves passing through the input aperture is partially reflected by the partially reflecting input surface and coupled into the first substrate and another part passes through the partially reflecting input surface and is coupled by the input surface of the second substrate into the second substrate.

There is provided an optical device, including an input aperture, an output aperture, at least first and second light-transmitting substrates each having two major surfaces and edges, an input surface for coupling light waves into the substrate for effecting total internal reflection inside the substrate, and an output surface for coupling light waves out of the substrate, a major surface of the first substrate is attached to a major surface of the second substrate and the input surface of the first substrate is a partially reflecting surface, such that part of the light waves passing through the input aperture is partially reflected by the partially reflecting input surface and coupled into the first substrate and another part passes through the partially reflecting input surface and is coupled by the input surface of the second substrate into the second substrate.

A display module includes a display panel, a middle frame, a film assembly, a backlight source and a backplane. The middle frame includes sub-frames each including a body and a support portion. The backplane includes a substrate and flanges. The sub-frames include at least one first sub-frame. The body of the first sub-frame is provided with a protrusion and the protrusion abuts against a corresponding flange. In the thickness direction of the flange, the orthographic projection of the protrusion on the substrate does not completely cover the orthographic projection of the corresponding flange on the substrate. The backlight source and the film assembly are sequentially arranged on the substrate, and the film assembly is located between the support portions and the flanges; and in the thickness direction of the flanges, an expansion gap is reserved between the protrusions and the film assembly.

A head-mounted computing device having a convertible waveguide optical engine assembly is disclosed. The waveguide in accordance with aspects herein can be utilized in its transparent configuration, or may be provided with means for blocking light from passing through it either by using mechanical means, or by using different types of treatments that can switch the waveguide between opaque an transparent states based on an external stimulus, such as, for example, electricity, temperature, light, and the like. Further, the waveguide optical engine assembly comprises a compact footprint, which is advantageous for head-mounted computing devices. In addition to the compact footprint of the waveguide optical assembly, the configuration of the waveguide optical assembly, as disclosed, allows for maximization of advantages provided by the waveguide as related to eye box and eye relief.

A light guide plate which includes a light incident surface, a light conversion element, an accommodation through hole and a diffusion element, the accommodation through hole is formed in the light guide plate and is adjacent to the light incident surface, the light conversion element is accommodated in the accommodation through hole, and the diffusion element is disposed on the light incident surface. Also disclosed is a light having a backlight module and a liquid crystal display having the light guide plate. A light conversion element is accommodated in the light guide plate, so as to avoid over-heating the light conversion element to further avoid reducing the color gamut of the product.

Provided is an optical sensing member, comprising a light guide plate 102 which propagates light from a light source unit 108, detecting units 104, 106 which detect scattered light from the light guide plate 102 being touched, an optical member which guides the scattered light to the detecting units, and a primary control unit 118 which computes the touch location upon the light guide plate 102 on the basis of information relating to the detected light. The optical member has arc-shaped curved surfaces formed on the end parts which face each of the detecting units. Each of the detecting units outputs, as the information relating to the light which is detected by the detecting units, location information corresponding to the angle of entry to the detecting units of the light which is radiated from the facing arc-shaped curved surfaces. It is thus possible to clarify contours of the light which is detected by the detecting units, and to improve the precision of the detection of the touch location.