Abstract: An optical scanning device includes an optical housing; an elongated optical element arranged in the optical housing and having a shape extending in a main-scanning direction; a retaining member provided at a side opposite to a surface of the optical housing on which the optical element is arranged to maintain an attachment attitude of the optical element in the optical housing; a curvature adjusting unit configured to adjust a curvature of the elongated optical element in a scanning line via the retaining member; a tilt adjusting unit configured to adjust a tilt of the optical element in the scanning line by making the optical element rotate on an optical axis via the retaining member; and a positioning unit configured to position the optical element in the optical axis direction, and provided in the optical housing and having such a shape that the optical element fits the positioning unit.

Abstract: A rotary motion controller controlling the motion of a mirror in a projection system is described having a mounting element coupled to a support member. A two-axis coupling is provided with at least two input shafts coupled to two drive mechanisms. A channeled portion is provided in a second of the two input shafts through which the support member extends there through and is guided thereby and where the at least one support member is coupled to the first input shafts via an input coupling coupled to and driving the support member and a control input controlling the position of the at least two input shafts. A method of controlling a mirror in an underwater projection system is also provided along with a method of operating a controller for an underwater projection system.

Abstract: A random number generator includes a light source emitting light at a first frequency, an optical unit including an optical component configured to receive light at the first frequency and emit light at a second frequency, and a measurement unit configured to receive light at the second frequency, and generate a random output value related to a phase parameter of the light at the second frequency.

Abstract: A vehicle overhead console is provided which includes a conversation mirror assembly having a housing defining a storage space for storing a conversation mirror. The conversation mirror may travel between a stowed and a use position. The conversation mirror is releasably secured to the stored and use positions by way of magnetic, tab, and spring arrangements.

Abstract: An acousto-optic device having a wide range of diffraction angle and an optical scanner, a light modulator, and a display apparatus using the acousto-optic device are provided. The acousto-optic device includes a core layer having a periodic photonic crystal structure in which unit cells of predetermined patterns are repeated, a first clad layer on a first surface of the core layer, the first clad layer having a refractive index that is different from a refractive index of the core layer, a second clad layer on a second surface of the core layer, the second surface being opposite the first surface, the second clad layer having a refractive index that is different from the refractive index of the core layer, and a sound wave generator configured to apply surface acoustic waves (SAW) to the core layer, the first clad layer, the second clad layer, or any combination thereof.

Abstract: A Z-axis focusing mechanism having a scanner and a prism whose front and rear faces are not normal to the direction of travel of a light beam prior to the light beam impinging upon the front face of the scanner. The scanner and the prism are oriented with respect to one another such that when a light beam is scanned onto the front face of the prism, a scanned beam having varying Z-axis focus points at distinct lateral locations exits the rear face of the scanner. Alternatively, the rear face of the prism may be normal to the light beam as it passes through the prism, which generates a retro-reflected, scanned light beam that exits the front of the prism.

Abstract: A pattern projector, comprising a light source, configured to emit a beam of light. A transparent substrate, which has a pair of mutually-opposed planar surfaces is configured to receive and propagate the beam within the substrate by total internal reflection between the planar surfaces. The transparent substrate comprises a diffractive structure that is formed on one of the planar surfaces and is configured to direct at least a part of the beam to propagate out of the substrate in a direction that is angled away from the surface and to create a pattern comprising multiple interleaved light and dark areas.

Abstract: A space frame having a high torsional strength comprising a first square bipyramid and two planar structures extending outward from an apex of the first square bipyramid to form a “V” shape is disclosed. Some embodiments comprise a plurality of edge-sharing square bipyramids configured linearly, where the two planar structures contact apexes of all the square bipyramids. A plurality of bridging struts, apex struts, corner struts and optional internal bracing struts increase the strength and rigidity of the space frame. In an embodiment, the space frame supports a solar reflector, such as a parabolic solar reflector. Methods of fabricating and using the space frames are also disclosed.

Abstract: A displaying method, a displaying apparatus and a displaying system for providing holographic images to a plurality of viewers simultaneously are provided. The displaying method comprises: tracking motions of M viewers and eye positions thereof, adjusting rotation angles of programmable mirrors allocated to each of the viewers according to the motions of the eye positions of the viewer, it is predefined that each pixel position of the projection screen corresponds to N adjacent ones of the programmable mirrors; modulating a corresponding left-eye 3D image and a corresponding right-eye 3D image according to the tracked motions of the eye positions of each of the viewers and the rotation angles of the programmable mirrors allocated to the viewer, and projecting the left-eye 3D image and the right-eye 3D image onto the projection screen to control optical projections incident to the left eyes and the right eyes of different viewers.

Abstract: An optical scanner apparatus includes first and second torsion beams which support a mirror support portion supporting a mirror from both sides in an axial direction; first and second horizontal driving beams configured to include first and second horizontal driving sources, respectively, a connecting beam; a first piezo-electric sensor; first and second sensor interconnects connected to one of and the other of an upper electrode and a lower electrode of the first piezo-electric sensor, respectively, the first sensor interconnect and the second sensor interconnect being formed to extend toward the first horizontal driving beam and the second horizontal driving beam, respectively.

Abstract: In a method for fabricating a self-aligned vertical comb drive structure, a multi-layer structure is first formed. The multi-layer structure includes inter-digitated first and second comb structures formed via etching using a first mask layer as a mask. The first comb structure includes a plurality of first comb fingers, each having a first finger portion formed in a first device layer and a second finger portion formed in a second device layer and separated from the first finger portion by a self-aligned pattern on a stop layer. The second comb structure includes a plurality of second comb fingers formed solely in the second device layer. The second finger portions of the first comb fingers are subsequently removed.

Abstract: A system for order alignment of diffractively produced images is provided. The system comprises: a diffractive spatial light modulator (DSLM) configured to provide a computer generated hologram of an image; a substantially coherent light source configured to illuminate the DSLM which responsively produces the image along each of different diffractive order paths; and, at least one set of optical components located along respective diffractive order paths of the DSLM, the at least one set of optical components configured to align at least one respective image diffracted from the DSLM with at least another diffracted image at a common image plane.

Abstract: The disclosure relates to a correction light device for the irradiation of optical elements of an optical arrangement, in particular a lens, such a microlithography lens having a correction light, which include at least one correction light source and at least one mirror arrangement that deflects the light from the correction light source in the beam path to the optical element such that at least part of at least one surface of at least one optical element of the optical arrangement are irradiated in a locally and/or temporally variable fashion. The correction light strikes the surface of the optical element at a flat angle such that the obtuse angle between the optical axis of the optical arrangement at the location of the optical element and the correction light beam is less than or equal to 105°.

Abstract: A volume holographic imaging system, apparatus and/or method enables the projection of a two-dimensional (2D) slice of a four-dimensional (4D) probing object A 4D probing source object is illuminated to emit or scatter an optical field. A holographic element having one or more recorded holograms receives and diffracts the optical field into a diffracted plane beam having spectral information. A 4-ftelecentric relay system includes a pupil filter on the relayed conjugate plane of the volume hologram and images the pupil of the volume hologram onto the front focal plane of the collector lens. A collector lens focuses the diffracted plane beam to a 2D slice of the 4D probing source object. The focused 2D slice is projected onto a 2D imaging plane. The holographic element may have multiple multiplexed holograms that are arranged to diffract light from the corresponding slice of the 4D probing source object.

Abstract: Provided are a complex spatial light modulator and a three-dimensional (3D) image display including the same. The complex spatial light modulator includes a spatial light modulator configured to modulate a phase of a light beam, a prism array disposed after the spatial light modulator and including an array of prism portions each having a first prism surface and a second prism surface, and a diffractive device configured to diffract a light beam that has passed through the prism array. Accordingly, both the phase and amplitude of the light beam may be modulated.

Abstract: An interior rearview mirror assembly for a vehicle includes a mirror reflective element having at least one transparent or glass substrate and a mirror reflector established at a surface of the at least one transparent or glass substrate. A mirror backplate is disposed to the rear of the mirror reflective element. A mounting base is configured for attachment at an interior portion of a vehicle. The mounting base includes a ball member. A socket element is formed separate from the mirror backplate and the mounting base. The socket element is attachable at the mirror backplate and is configured to pivotally attach to the ball member of the mounting base. With the socket element attached at the mirror backplate, the socket element pivotally attaches to the ball member to pivotally mount the mirror backplate and the mirror reflective element at the mounting base.

Abstract: A method for forming a three-dimensional holographic image includes identifying a transmission matrix of a scattering material, calculating an incident wave-front corresponding to wave-front information for forming a three-dimensional holographic image, using the identified transmission matrix, and forming the calculated incident wave-front by controlling a wave-front control to modulate a light projected from a light source and forming a three-dimensional holographic image.

Abstract: A splicing-screen border weakening structure includes a transparent solid element through which a light ray is able to penetrate. The transparent solid element includes a fixing surface which is used for fixing to the border and a light-ray exiting surface which is opposite to the fixing surface, and further includes an inner area which is opposite to the border and an outer area which is opposite to an edge display area of the display screen. A first prism structure is at least arranged at a position corresponding to the inner area of the light-ray exiting surface. A light ray exits from the edge display area and enters into the outer area of the transparent solid element, and a part of the light ray is deflected by the first prism structure of the light-ray exiting surface and exits from an inner area of the light-ray exiting surface.

Abstract: Modern implementations of Kohler illuminated epi illumination microscope systems provide state of the art performance in various scientific fields such as clinical practice and biological research. While modern microscope performance has increased by use of high performance components, modern microscopes now degrade over time and exhibit inconstant performance. New systems comprise new illumination cubes that replace existing components and contain optical components that provide users with a diagnostic image of the epi illumination.

Abstract: An elastic supporting structure for an optical image stabilizer is provided. The optical image stabilizer includes a movable portion, a compensation module, and a plurality of suspension wires. The movable portion is provided therein with a lens. The compensation module corresponds to the movable portion, and both are located on the same image-capturing optical axis. Each suspension wire has two ends respectively connected to the movable portion and the compensation module. The movable portion is provided with an upper spring plate. One end of each suspension wire is connected to a length-increased outer line element and at least one additional auxiliary line element of the upper spring plate, and the other end of each suspension wire is connected to the compensation module, such that the movable portion corresponds to the compensation module and is spaced therefrom by a predetermined distance. Also, anti-shake function performs well with suspension wires.