A multimode optical waveguide network comprises a parent waveguide and a plurality of child waveguides. Each waveguide is a multimode optical waveguide having a first surface region, multiple second surface regions, and at least one guiding element attached to a surface of the waveguide or embedded within the waveguide, each second surface region of the parent waveguide optically coupled to the first surface region of a corresponding child waveguide. The guiding element(s) of the parent waveguide is arranged to guide a beam, from or to its first surface region, to or from any selected second surface region of its multiple second surface regions. The guiding element(s) of each of the waveguides is configurable for selecting the second surface region of that waveguide and/or responsive to at least one beam characteristic for selecting the second surface region of that waveguide via modulation of the at least one beam characteristic.

The invention relates to an optical system and, in particular for characterizing a microlithography mask, comprising a light source for generating light of a wavelength of less than 30 nm, an illumination beam path leading from the light source to an object plane, an imaging beam path leading from the object plane to an image plane and a beam splitter, via which both the illumination beam path and the imaging beam path run.

The application provides an augmented reality display device comprising a projection source module (10) and an optical path module, wherein the projection source module (10) comprises a projection source (12), the projection source (12) has a curved light outgoing surface (12a), virtual image light (VL) is projected out of the projection source (12) via the curved light outgoing surface (12a), and the optical path module comprises a beamsplitter (20) and a reflector (60), wherein the virtual image light (VL) projected out of the projection source module (10) is incident on the beamsplitter (20), reflected by the beamsplitter (20) onto the reflector (60), reflected by the reflector (60), and then transmitted through the beamsplitter (20), entering a human eye (E) eventually. The application also provides a wearable augmented reality system comprising the augmented reality display device and a projection source module for the augmented reality display device.

Shaped optical films and methods of shaping optical films are described. The method includes securing at least portions of a perimeter of the optical film in a first plane so that the secured portions do not move relative to one another; and stretching the optical film by displacing a portion of the optical film along at least a first direction perpendicular to the first plane such that one of a radial and circumferential stretching of the optical film is substantially constant from a center to the perimeter of the optical film, and the other one of the radial and circumferential stretching of the optical film substantially changes from the center to the perimeter of the optical film. The optical film is a reflective polarizer including a plurality of alternating polymeric layers.

A virtual reality head mounted display includes a first display, a first lens, a second lens, a beam splitter coating and a second display. The first display generates a first display image beam on an active surface. The first lens has a first surface facing the active surface of the first display and a second surface opposite to the first surface. The second lens has a third surface and an opposite fourth surface. The beam splitter coating is disposed between the second surface of the first lens and the third surface of the second lens. The third surface of the second lens is attached to the second surface of the first lens through the beam splitter coating. The second display has an active surface facing the fourth surface of the second lens. The second display generates a second display image beam on the active surface.

A power bank and holographic projection accessory intended for use with a portable electronic device. The accessory includes a holographic projection unit and an external power bank case attachable to the holographic projection unit. The external power bank case is configured to provide power to the holographic projection unit and to provide a video signal generated by the portable electronic device to the holographic projection unit. The holographic projection unit generates volumetric projections based upon the video signal.

A holographic display system including an electronic device, a camera and a holographic projection unit. The holographic projection unit is configured to generate a volumetric projection for viewing by a user in response to a rendering signal provided by a volumetric display application executing on the electronic device. The holographic projection unit includes a housing, a projector at least partially disposed within the housing and operative to display images based upon the rendering information, and a semi-reflective element being oriented to reflect light from the images in order to create the volumetric projection. The camera is oriented such that the user is within a field of view, the camera being operative to provide the image information to the volumetric display application for determination of a position of the user. The volumetric projection is adapted in response to the position of the user.

There is disclosed an optical device, including a light-transmitting substrate having an input aperture, an output aperture, at least two major surfaces and edges, an optical element for coupling light waves into the substrate by total internal reflection, at least one partially reflecting surface located between the two major surfaces of the light-transmitting substrate for partially reflecting light waves out of the substrate, a first transparent plate, having at least two major surfaces, one of the major surfaces of the transparent plate being optically attached to a major surface of the light-transmitting substrate defining an interface plane, and a beam-splitting coating applied at the interface plane between the substrate and the transparent plate, wherein light waves coupled inside the light-transmitting substrate are partially reflected from the interface plane and partially pass therethrough.

The present invention relates to a hybrid imaging system for photodiagnosis and phototherapy and, more particularly, to a hybrid imaging system for photodiagnosis and phototherapy, which simultaneously acquires a visible ray image or a near-infrared ray image and a lonq wave infrared ray image by using an optical method. The hybrid imaging system for photodiagnosis and phototherapy according to the present invention includes a light distribution unit, a visible ray/near-infrared ray measurement unit, a long wave infrared ray measurement unit, and a light source unit, thereby simultaneously and quickly extracting a visible ray image, a near-infrared ray image, and a long wave infrared ray image without mutual distortion.

There is disclosed an optical device, including a light-transmitting substrate having an input aperture, an output aperture, at least two major surfaces and edges, an optical element for coupling light waves into the substrate by total internal reflection, at least one partially reflecting surface located between the two major surfaces of the light-transmitting substrate for partially reflecting light waves out of the substrate, a first transparent plate, having at least two major surfaces, one of the major surfaces of the transparent plate being optically attached to a major surface of the light-transmitting substrate defining an interface plane, and a beam-splitting coating applied at the interface plane between the substrate and the transparent plate, wherein light waves coupled inside the light-transmitting substrate are partially reflected from the interface plane and partially pass the through.