Abstract: Holographic optical elements for augmented reality (AR) devices and methods of manufacturing and using the same are disclosed. A disclosed system includes a holographic optical element (HOE), and a first light source to direct a first beam of light toward the HOE from a first direction. The first beam of light is collimated. The disclosed system further includes a second light source to direct a second beam of light toward the HOE from a second direction. The disclosed system also includes a decollimation lens positioned between the first light source and the HOE. The decollimation lens is to decollimate the first beam of light.

Abstract: A MEMS micro-mirror device includes, a single package; a first mirror and second mirror, wherein at least one of the mirrors is configured to oscillate along an oscillation axis; wherein both mirrors are located within the single package and are arranged such that as the at least one mirror oscillates, the light incident on the first micro-mirror can be deflected to the second mirror.

Abstract: Light-field mixed reality system, comprising: a pin-light array generating an incident light-field illuminating an optical light modulator; the optical light modulator being configured for modulating the incident light-field and generating a modulated virtual light-field; and a combiner configured for reflecting the modulated virtual light-field and projecting a projected virtual light-field defining an eye box region along a projection axis; wherein the projected virtual light-field further forms an exit pupil of the pin-light array within the eye box and a virtual image of the optical light modulator, along the projection axis in front of the exit pupil, or behind the exit pupil; and wherein the combiner is further configured for transmitting natural light from the real world towards the eye box, such that both projected virtual light-field and natural light are projected within the eye box.

Abstract: Holographic optical elements for augmented reality (AR) devices and methods of manufacturing and using the same are disclosed. An example AR device includes a holographic optical element (HOE) including a recorded optical function, and a projector to emit light toward the HOE. The HOE reflects the light based on the optical function to produce a full image corresponding to content perceivable by a user viewing the reflected light from within an eyebox. A first portion of the content is viewable from a first location within the eyebox. A second portion of the content is viewable from a second location within the eyebox. The first portion including different content than the second portion that is non-repeating between the first and second portions.

Abstract: A device and method are provided for projecting a portion of an image, which is to be projected on to a display area, with improved brightness. A projector may be configured such that it projects over a portion of the display area. A signal which defines the pixels of the image may be modified to provide a signal which defines pixels of only a portion of the image.

Abstract: Disclosed herein are devices and techniques related to optical diffusers and particularly, diffusers to reduce moiré patterns in a projected image. The device may comprise an array of micro-focal elements or reflectors and a light polarization grid. The light polarization grid configured to change a polarization between portions of a light beam and the micro-focal elements of reflectors to diffuse the light beam such that portions of the light beam having a difference in polarization may meet at a point.

Abstract: According to the present invention there is provided a projection device, which is configured to project an image which is co-operable with images projected by one or more other projection devices, wherein the projection device comprises a detector operable to detect characteristics of images projected on a display surface by the projection device and one or more other projection devices, and a controller operable to adjust the projection device and/or to adjust one or more of the other projection devices, based on the characteristics of the images detected by the detector, such that the images projected by each projection device co-operate on the display surfaces.

Abstract: A projection device According to the present invention there is provided a projection device (30,50,100) comprising, a light source (31,61) which can provide light beams (32a,b,c 62a,b,c), wherein the light beams (32a,b,c 62a,b,c) can be used to define one or more pixels of a virtual image (48); a MEMS micro mirror (34) which is arranged to receive the light beams (32a,b,c 62a,b,c) provided by the light source (31,61), and wherein the MEMS micro mirror (34) can oscillate about at least one oscillation axis (7,17) to scan the light beams (32a,b,c 62a,b,c); a reflective element (38), which comprises a plurality of convex reflective projections (39), and wherein the reflective element (38) is arranged so that light beams (32a,b,c 62a,b,c) reflected by the MEMS micro mirror (34) are incident on said convex reflective projections (39), so that the light beams (32a,b,c 62a,b,c) are reflected by the convex reflective projections (39); a beam combiner (45,81), wherein the beam combiner is arranged to receive the ligh

Abstract: A projection device According to the present invention there is provided a projection device (30,50,100) comprising, a light source (31,61) which can provide light beams (32a,b,c 62a,b,c), wherein the light beams (32a,b,c 62a,b,c) can be used to define one or more pixels of a virtual image (48); a MEMS micro mirror (34) which is arranged to receive the light beams (32a,b,c 62a,b,c) provided by the light source (31,61), and wherein the MEMS micro mirror (34) can oscillate about at least one oscillation axis (7,17) to scan the light beams (32a,b,c 62a,b,c); a reflective element (38), which comprises a plurality of convex reflective projections (39), and wherein the reflective element (38) is arranged so that light beams (32a,b,c 62a,b,c) reflected by the MEMS micro mirror (34) are incident on said convex reflective projections (39), so that the light beams (32a,b,c 62a,b,c) are reflected by the convex reflective projections (39); a beam combiner (45,81), wherein the beam combiner is arranged to receive the ligh

Abstract: Assembly (1) comprising a laser source (3) and a component for reducing speckle (7) comprising a beam splitter (9) that reflects a first portion (11) of the laser beam and transmits a second portion (13) and a first and second reflecting means (15, 17), the first reflective means (15) receiving the second portion (13) of the laser beam and the second reflective means (17) directing said second portion (13) back to the beam splitter (9), wherein the second portion (13) of the laser beam can be directed from the first (15) to the the second reflective means (17), wherein the first (15), the second (17) reflective means and the means for beam splitting (9) define an optical path for the second portion (13) of the laser beam, the length of which being equal to, or greater than, the coherence length of the laser beam.

Abstract: Disclosed herein are devices and methods to provide multiple eyeboxes from multiple input pupils. In particular, a projection system can direct light from multiple input pupils to a holographic optical element. The light of each of the input pupils having light beams of different wavelengths. The holographic optical element reflects at least part of the light of the multiple input pupils to form an array of exit pupils.

Abstract: An optical assembly, and in particular an optical assembly which uses a microlens array or a micromirror array to reduce speckle. It further concerns an optical component which comprises a micromirror array.

Abstract: The present disclosure provides a projection device and manufacturing method, comprising the steps of fixing the positions of a red light source, green light source and blue light source so that the light sources are immovable; providing a mirror which is configured to oscillate such that it can scan light it receives across a display screen; positioning an optical component, which is configured to deflect light, such that it can receive red, green and blue light beams outputted from the red, green and blue light sources respectively; adjusting the optical component such that the optical component compensates for variation between the light sources, in the direction in which the red, green and blue light beams are output from the red, green and blue light sources, so that each of the red, green and blue light beams are directed to the same point on the display screen.

Abstract: Method for mounting a semiconductor laser element (3) into a laser holder (1), comprising the following steps: providing a laser holder (1) comprising a metal body (2) equipped with a substantially cylindrical housing (20) and comprising a frontal end (21) equipped with a first aperture (210) for passage of the laser beam produced by said laser element, and a back end (22) equipped with a second aperture (220) for inserting said laser element (3), said body (2) being passed through by a first group of windows (51, 52) arranged radially in a first plane (P1) perpendicular to the axis (23) of said housing (20), the angular spacing between said windows (51, 52) being regular; inserting said semiconductor laser element (3) into said housing (20); inserting an adhesive (24) for fastening said semiconductor laser element (3) into said windows (51, 52); and simultaneously setting the adhesive in said windows (51, 52) by means of ultraviolet light penetrating simultaneously into said windows (51, 52).

Abstract: A lighting system with a laser light source for radiating light; a wavelength conversion element for receiving the radiated light from the light source and for re-emitting wavelength converted white light; and a reflector element for reflecting the light received from the wavelength conversion element is disclosed. The reflector element comprises a reflective surface and a micro-patterned surface comprising an array of micro-focal elements. Each micro-focal elements is configured to converge or diverge incident light from the wavelength conversion element.

Abstract: Disclosed herein are systems and techniques related to virtual image projection systems. In some examples, the system may include a scanning mirror arrangement for receiving a light beam and reflecting the light beam to a projection surface and a dynamic optical lens for focusing the light beam at a focal plane so that the light beam reflected from the projection surface is collimated or diverging enabling the projected image to be perceived as a virtual image.

Abstract: Disclosed herein are systems and techniques related to optical projection systems. In some examples, the system may include a scanning mirror arrangement for receiving a light beam and reflecting the light beam to a projection surface and a dynamic optical lens for focusing the light beam at points on a focal plane. Dynamic optical lens can be adjusted to focus the light beam on multiple points of the focal plane, where some of the points are disposed a different distance from the dynamic optical lens.

Abstract: A micro-projection system for projecting light on a projection surface, comprising: at least one coherent light source (101); optical elements (102, 108, 109) in the optical path between said coherent light source and said projection surface; said optical elements including at least one reflective member (102) actuated by a drive signal for deviating light from said light source so as to scan a projected image onto said projecting surface; said optical elements including at least one vibrating element (102) actuated by a vibrating signal so as to reduce speckle onto said projecting surface. The corresponding method for reducing speckle is also provided.

Abstract: An optical micro-projection system comprising the following components: at least one laser light source (200, 400, 402, 600); at least one movable mirror (102, 103, 203) for deviating light from said light source to allow generation of images on a projection surface (104, 301, 303, 306, 603); a self mixing module for measurement of the distance (604) between the projection source and a projection surface, said self mixing module comprising: —at least one photodiode (401, 601) for monitoring the light emission power of the laser light source; —an optical power variation counter for counting optical power variations (605); successive displacements of said mirror allowing the self mixing module providing successive projection distance measurements of a plurality of points of said projection surface. A projection method for optical micro-projection system and a distance measurement method are also provided.

Abstract: According to the present invention there is provided a method for projecting a 3-D viewable image onto a display surface, comprising the steps of, providing two or more projection systems; arranging the two or more projection systems into a first group and second group, wherein the first group and second group each comprise one or more projection systems; arranging the first and second group of projection systems such that each group of project systems can project an image on a display surface, wherein the first group of projection systems is arranged such that the first group of projection systems can project an image to a first position on the display surface and the second group of projection systems is arranged such that the second group of projection systems can project an image to a second position on the display surface, wherein the first and second positions are off-set from one another; configuring the first and second group of projection systems such that the first and second group of projection sys