Abstract: A confocal microscope for imaging tissue having an imaging head for capturing optically formed microscopic sectional images of tissue samples, a platform upon which is disposed a linear stage for moving the imaging head along a vertical dimension, and a rotary stage to rotate the linear stage and imaging head about the vertical dimension. A mounting arm couples the imaging head to the linear stage to adjust tilt of the imaging head and to rotate the imaging head about a normal axis perpendicular to an optical axis of an objective lens of the imaging head. In a first mode of operation, the imaging head is positioned to image an ex-vivo or in-vivo tissue sample upon the platform, such as ex-vivo tissue sample mounted upon a movable specimen stage, and in a second mode of operation the imaging head is positioned to image an in-vivo tissue sample beside the platform.

Abstract: An optical unit includes a movable body, a support body, a swing mechanism, and a magnetic member. The movable body includes an optical element. The optical element reflects light, which travels to one side in a first direction, to one side in a second direction intersecting the first direction. The support body supports the movable body so as to be swingable about a swing axis. The swing mechanism swings the movable body about the swing axis. The magnetic member is arranged on the support body. The swing mechanism includes a magnet and a coil. The magnet is arranged at an end of the movable body in a direction intersecting the first direction. The coil opposes the magnet. The magnetic member is arranged on one side in the first direction with respect to the magnet.

Abstract: An optical device is formed by hot stamping a demetallized hologram to an optically variable foil or to a coating of optically variable ink. In another embodiment a hologram is hot stamped to a banknote or document printed with a color-shifting ink.

Abstract: A prism apparatus, and a camera and an image display apparatus including the same are disclosed. The prism apparatus includes: a first prism configured to reflect input light toward a first reflected direction, a first actuator configured to change an angle of the first prism about a first rotation axis to change the first reflected direction based on a first control signal, a second prism configured to reflect the light reflected from the first prism toward a second reflected direction, and a second actuator configured to change an angle of the second prism about a second rotation axis to change the second reflected direction based on a second control signal.

Abstract: A method for rendering a light field comprises projecting rays from a viewpoint positioned at a first side of a spatial light modulator (SLM) to a clipping plane positioned at an opposing side of the SLM to form an elemental view frustum within a three-dimensional scene and rendering objects within the elemental view frustum to generate components of a first elemental image for the first elemental region. The SLM may include a tiled array of non-overlapping elemental regions and a top edge and a bottom edge of a first elemental region of the non-overlapping elemental regions are intersected by the rays to form the elemental view frustum. Furthermore, the light field may include the first elemental image and additional elemental images corresponding to the array of elemental regions and each one of the additional elemental images is rendered using an additional elemental view frustum.

Abstract: A light redirecting film includes a first layer disposed on a second layer with structured major surfaces of the first and second layers facing each other. An optically reflective layer or a metal layer is disposed between the first and second layers. The first layer can be a hot melt adhesive layer and the second layer can be a polymeric layer. The first and second layers can be unitary layers. The first layer can be a first polymeric layer having a softening temperature T1 and the second layer can be a second polymeric layer having a softening temperature T2 greater than T1. Heating and/or applying pressure to the film changes an optical characteristic of the film by less than about 5%.

Abstract: A lens driving device includes fixing bracket, first support frame sleeved on the fixing bracket, second support frame sleeved on the first support frame, rotation assembly configured to make the fixing bracket rotate relative to the first support frame about a first direction and the first support frame rotate relative to the second support frame about a second direction, driving assembly for driving fixing bracket to rotate relative to first support frame about the first direction and driving the first support frame to rotate relative to the second support frame about the second direction, flexible printed circuit board, first elastic support components, and second elastic support components. The lens driving device increases spacing between adjacent two of crossing portions of the shape memory wires so that the shape memory wires have enough space for the movement, preventing the shape memory wires from being interfered with each other during the movement.

Abstract: An imaging system that contains a display, a polarization folded path lens with an intended image signal path and an exit pupil wherein light entering the PFP lens from the display substantially follows the intended signal path. A variant of this system is disclosed where the light entering the PFP lens substantially follows the signal path and leaves via the Exit pupil (as opposed to being aperture). Compared to the prior art, the techniques described herein improve transmission efficiency and reduce corruption of the image by non-signal path light.

Abstract: An image shake correction device includes a movement restrictor that restricts movement of a movable member in directions X, Y, ?, and Z. The movement restrictor includes a movement prevention member that is fixed to a base of a support member and prevents the movable member from moving in the direction Z while sandwiching the movable member in cooperation with the support member, a hole portion formed in the support member, and an insertion member that is formed in the movable member and is inserted into the hole portion. A wide width portion of the insertion member has a size that overlaps with the base of the support member even in a state in which an abutting portion of the insertion member is positioned in any position in the hole portion.

Abstract: An article including a durable, optically transparent, and superhydrophobic coating is described. In one aspect, the present disclosure provides a coating comprising a layer of aerogel disposed interstitially between spaced features extending in a direction perpendicular to a major surface of the coating, the spaced features having an average height of between 200-5000 nm and an average spacing of between 10-2000 nm, and comprising at least 75 wt. % of one or more of crystalline or amorphous silicon, an inorganic oxide, a polymer, crystalline or amorphous carbon, a carbide, or a nitride.

Abstract: Optical films and polarizing beam splitters including the optical films are described. In some cases, the optical film includes a first optical stack disposed on, and spaced apart by one or more spacer layers from, a second optical stack, each optical stack comprising a plurality of polymeric interference layers reflecting and transmitting light primarily by optical interference in a same predetermined wavelength range. Each optical stack has interference layers closer to the one or more spacer layers that reflect longer wavelengths and interference layers farther from the one or more spacer layers that reflect shorter wavelengths.

Abstract: Provided are an imaging unit 104 that uses a light emitted from a second beam splitter 202 of a microscope 2 that can use an exciting light and an observation light, which is a light including a wavelength other than that of the exciting light, as a light source by switching there between and is provided with the second beam splitter 202 to image images of the same observation region of the microscope 2 in situations where the exciting light and the observation light are used as the light source and an output unit 106 that overlaps, synthesizes, and outputs the images imaged by the imaging unit 104 respectively using the exciting light and the observation light as the light source.

Abstract: An optical assembly including an optical element insert molded directly onto an optical stack is provided. The optical stack includes an optical film and may include a liner with the optical film being disposed between the optical element and the liner. The liner, if included, is removable from the optical film without substantial damage to the optical film. An outermost layer of the optical film may be diffusion bonded to a major surface of the optical element. The optical film includes a protective coating having an average thickness of no more than 30 micrometers. The protective coating includes an at least partially cured composition. The composition includes 70 to 96 weight percent of urethane (meth)acrylate compound having an average (meth)acrylate functionality of 2 to 9.5, and 2 to 20 weight percent of (meth)acrylate monomer having a (meth)acrylate functionality of 1 to 2.

Abstract: A compound retarder that creates independent control of Re and Rth. This can be done by forming a three-layer compound retarder, including a pair of matched ?A-plates, combined with single +A-plate. The +A-plate is typically an MD-stretched film, with retardation that is specific to the in-plane requirements (Re) of the application. The pair of ?A-plates have their optic axes crossed, such that Re=0, with an optic axis aligned parallel to the +A-plate. A single retardation value for the ?A-plate can produce improved field-of-view performance over a broad range of Re values, making it a very practical means of universal compensation. While Rth is typically associated with a single retarder, retarder stacks with a diverse range of optic-axis orientations can be considered to have a compound (or composite) Rth value (Rthc). The three-layer compound retarder has the practical benefit of enabling field-of-view compensation across a broad range of normal-incidence polarization transformations.

Abstract: An optical assembly in a laser scanning microscope, having an optical scanning unit providing a first pupil plane, a first beam deflecting device, made of a first scanner arranged on the first pupil plane, for scanning excitation radiation in a first coordinate direction, a first focusing device generating a second pupil plane, optically conjugated to the first pupil plane, and a second beam deflecting device for deflecting the excitation radiation. The second deflecting device is arranged on the second pupil plane. A second focusing device to generate a third pupil plane, is optically conjugated to the first pupil plane and the second pupil plane. A third beam deflecting device is arranged on the third pupil plane, and a variable beam deflecting device is provided to switch an optical beam path between a first beam path and a second beam path.

Abstract: A phase shifting device may include a plurality of metal layers and a plurality of first dielectric layers, a metal layer of the plurality of metal layers and a first dielectric layer of the plurality of first dielectric layers being alternately stacked in a first direction, and a second dielectric layer disposed on a side surface of the stacked structure in a second direction, wherein the first dielectric layer includes a first material having a first dielectric constant and the second dielectric layer includes a second material having a second dielectric constant, and wherein the second dielectric constant is greater than the first dielectric constant.

Abstract: An optical assembly including an optical element insert molded directly onto an optical stack is provided. The optical stack includes an optical film and may include a liner with the optical film being disposed between the optical element and the liner. The liner, if included, is removable from the optical film without substantial damage to the optical film. An outermost layer of the optical film may be diffusion bonded to a major surface of the optical element.

Abstract: A light sheet microscope, such as an oblique plane microscope or a swept confocally-aligned planar excitation (SCAPE) microscope, includes an optical system with a first optical element, a second optical element and a mirror assembly. In a first operational state of the microscope, the optical system is configured to transmit illumination light along a first illumination light path through the first optical element into a first sample volume, and configured to transmit observation light along a first observation light path from the first sample volume to a detector device. In a second operational state of the microscope, the optical system is configured to transmit the illumination light along a second illumination light path via the mirror assembly through the second optical element into a second sample volume, and configured to transmit observation light along a second observation light path from the second sample volume to the detector device.

Abstract: An optical unit is provided which enables performing shake correction of a moving element in the optical axis direction and the direction around the optical axis with a simple configuration and which takes into account ease of assembly. Specifically, this optical unit is provided with: a moving element (14) which is provided with an optical module; a static element (16); a rolling support mechanism (20) which supports the moving element with respect to the static element rotatably about the optical axis of the optical module; and a rolling drive mechanism (18) which rotates the moving element about the optical axis.

Abstract: An optical device includes a first polarization selective reflector; a second polarization selective reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs first light toward the second polarization selective reflector and the second polarization selective reflector directs at least a portion of the first light toward the first polarization selective reflector as second light. The optical device includes a first reflector positioned relative to the first polarization selective reflector so that the first polarization selective reflector directs at least a portion of the second light received from the second polarization selective reflector toward the first reflector as third light and the first reflector directs at least a portion of third light toward the first polarization selective reflector.