An imaging correction unit and an imaging module are provided. The imaging correction unit has an optical axis and includes four wedge optical elements with the same structure. The wedge optical elements are disposed sequentially on the optical axis. Each of the wedge optical elements has a minimum thickness dimension at a first edge and a maximum thickness dimension at a second edge. A connection line between the first edge and the second edge forms a symmetry axis of the each of the wedge optical elements. When a beam transmitted along the optical axis of the imaging correction unit passes sequentially through the wedge optical elements and is imaged at a center of an imaging surface, the symmetry axis of any one of the four wedge optical elements is at an angle of 90 degrees relative to the symmetrical axis of one of adjacent wedge optical elements.

A light direction adjustment mechanism and an imaging device that enables size reduction are provided. The adjustment mechanism includes a first optical element (201), a second optical element (202) having a same optical axis as that of the first optical element (201), and a rotation mechanism (63). The rotation mechanism (63) allows the first optical element (201) to rotate while the rotation mechanism (63) changes a rotation angle of the first optical element (201) relative to the second optical element (202) when the first optical element (201) is rotated about the optical axis in a first direction. The rotation mechanism (63) allows the first optical element (201) to rotate while the rotation mechanism (63) does not change the rotation angle of the first optical element (201) relative to the second optical element (202) when the first optical element (201) is rotated about the optical axis in a second direction.

A laser-excited-phosphor light-source system in which a phosphor plate remains stationary while a laser beam is made to scan across the phosphor plate. In some embodiments, the phosphor-plate assembly includes a plurality of areas each having a different phosphor substance that emits wavelength-converted light in response to excitation from the scanned laser beam and/or a diffusive material. In some embodiments, one or more rotating prisms and/or one or more rotating or oscillating or angularly displaced mirrors are used to deflect the input laser light on the way toward the phosphor plate and to deflect the wavelength-converted and/or diffused light in the opposite direction such that the output beam of wavelength-converted and/or diffused light remains stationary with respect to the phosphor plate as the input laser beam is moved across the surface of the phosphor-plate assembly.

A method for physically modifying at least one of at least one region of a surface of a substrate and at least one portion of the substrate, the substrate comprising a multicomponent glass, the method comprising the steps of: providing an apparatus and the substrate, the apparatus including a radiation source configured for generating a particle beam; feeding the substrate to the apparatus and applying a vacuum; modifying at least one of the at least one region of the surface of the substrate and the at least one portion of the substrate by an exposure to the particle beam.

A plurality of waveguide display substrates, each waveguide display substrate having a cylindrical portion having a diameter and a planar surface, a curved portion opposite the planar surface defining a nonlinear change in thickness across the substrate and having a maximum height D with respect to the cylindrical portion, and a wedge portion between the cylindrical portion and the curved portion defining a linear change in thickness across the substrate and having a maximum height W with respect to the cylindrical portion. A target maximum height D.sub.t of the curved portion is 10.sup.−7 to 10.sup.−6 times the diameter, D is between about 70% and about 130% of D.sub.t, and W is less than about 30% of D.sub.t.

An image compensation device and a prism carrying mechanism thereof. The prism carrying mechanism comprises a base and a pair of prism carrying members. The base comprises a base body, a light passing hole disposed at the base body, and a plurality of first sliding assembling parts integrally formed on the same side of the base body. Each of the prism carrying members comprises a carrying member body, a prism assembling part disposed at the carrying member body and corresponding to the light passing hole, and a plurality of second sliding assembling parts integrally formed on the same side of the carrying member body. The prism assembling parts of the pair of prism carrying members are oppositely and alternately disposed in an axial direction. The plurality of second sliding assembling parts are slidably assembled to the plurality of first sliding assembling parts respectively.

Techniques for imaging such as lidar imaging are described where a plurality of light steering optical elements are moved (such as rotated) to align different light steering optical elements with (1) an optical path of emitted optical signals at different times and/or (2) an optical path of optical returns from the optical signals to an optical sensor at different times. Each light steering optical element corresponds to a zone within the field of view and provides (1) steering of the emitted optical signals incident thereon into its corresponding zone and/or (2) steering of the optical returns from its corresponding zone to the optical sensor so that movement of the light steering optical elements causes the imaging system to step through the zones on a zone-by-zone basis according to which of the light steering optical elements becomes aligned with the optical path of the emitted optical signals and/or the optical path of the optical returns over time.

The present invention relates to an optical device (1), comprising: a container (10) enclosing an internal space (11) of the container (10), the internal space (11) being filled with a transparent liquid (12), wherein the container (10) comprises a transparent and elastically deformable membrane (13) delimiting said internal space (11) at least partially, wherein the container (10) further comprises a transparent rigid optical element (2) being connected to said membrane (13), the rigid optical element (2) comprising an optical surface (20) facing the membrane (13), the rigid optical element (2) being configured to receive light (L) for passing the light (L) through the transparent liquid (12) residing in the internal space (11) of the container (10), wherein the optical device (1) further comprises a supporting structure (3) supporting the rigid optical element (2) so that the rigid optical element (2) is tiltable about at least a first tilting axis (X) extending along said optical surface (20) of the rigid optical element (2) to deflect light passing through the container (10), wherein the supporting structure (3) is configured to prevent a translation of the rigid optical element (2) in a direction parallel to an optical axis (A) of the optical device.

A display device for projecting light to a viewer may include (1) a plurality of subpixels, in which subpixels may emit light of differing spectral distributions, (2) at least one light deviator disposed optically downstream from the plurality of subpixels, and (3) and a controller. The light emitted from each of the plurality of subpixels may be transmitted through and laterally shifted by the least one light deviator towards a viewer and the at least one light deviator may be mechanically rotatable by a force applied to an outer circumferential region of the at least one light deviator. The controller may control illumination of at least a subset of the plurality of subpixels in synchronization with rotation of the at least one light deviator. Various other apparatus, systems, and methods are also disclosed.

The invention discloses a selectable offset image wedge assembly and various methods for making and for use with any optical system having a circular lens and an objective, comprising a housing with a rear-facing end that mounts onto the objective and a forward-facing end with a circular wedge lens mounted therein that is coaxially aligned with the circular lens of the optical system, wherein, the wedge is adjustable to any predetermined clocking position after detachment from the optical system, allowing quick and repeated reattachment to the optical system to an approximately exact vertical orientation of a first image produced by the wedge lens and a second image produced by the circular lens of the optical system.