Abstract: A system may comprise a selectively transparent projection device for projecting an image toward an eye of a viewer from a projection device position in space relative to the eye of the viewer, the projection device being capable of assuming a substantially transparent state when no image is projected; an occlusion mask device coupled to the projection device and configured to selectively block light traveling toward the eye from one or more positions opposite of the projection device from the eye of the viewer in an occluding pattern correlated with the image projected by the projection device; and a zone plate diffraction patterning device interposed between the eye of the viewer and the projection device and configured to cause light from the projection device to pass through a diffraction pattern having a selectable geometry as it travels to the eye.

Abstract: The invention relates to a method for determining a progressive ophthalmic device for personalised visual compensation for an individual, according to which the following steps are performed: a) in a first data acquisition phase, determining at least at a first time preceding the appearance of the presbyopia of this individual, at least one value of at least one individual parameter of said individual, and recording each value of the individual parameter of the wearer in a database, in correlation with an associated temporal indicator, b) in a second determination step of the progressive ophthalmic device for personalised visual compensation, determining a desired value of at least one geometric or optical parameter of said progressive ophthalmic device for visual compensation, taking account of said at least one value of the individual parameter determined in step a) and the associated temporal indicator.

Abstract: In various embodiments, alignment systems for laser resonators generate near-field and/or far-field images of input beams produced by the laser resonators to enable the alignment of the input beams.

Abstract: A blur compensation system includes: a mirror on which light of an image from a predetermined position is incident and which reflects light of a specific wavelength such that an incidence angle and an emission angle of the light of the specific wavelength are different from each other; a mirror that is disposed at a position on which the light of an image which is reflected by the mirror is incident and reflects the light of the specific wavelength such that an incidence angle and an emission angle of the light of the specific wavelength are different from each other; and a lens that is disposed on an optical axis of the light of an image between the mirror and the mirror and changes a direction of the light of an image which is reflected by the mirror such that light of a wavelength other than the specific wavelength out of the light of an image which is reflected by the mirror is emitted in the same direction as the light of the specific wavelength from an emission position of the light of the specific wave

Abstract: This disclosure is directed to system for transferring a substrate, such as a microscope slide, and holding the substrate within at least one device. The system includes a holder for holding the substrate and a gripper for transferring the substrate, such as between a cassette or stack and the holder. A method is also discussed herein.

Abstract: A low distortion lens suited for a wide variety of applications uses a double plane symmetry lens as part of a lens system to permit aberration correction to be optimized in the field of view of an associated sensor. Wide angle, Kepler telescopic and Galileo telescopic designs can be implemented. The design can be implemented using existing manufacturing techniques.

Abstract: An accessory that can be attached to a camera body, the camera body including a first camera-side clock terminal that outputs a first clock signal, a first camera-side data terminal that outputs a first data signal, and a third camera-side data terminal to which a third data signal is input, the accessory includes: an eighth terminal that is brought into contact with the first camera-side clock terminal; a seventh terminal that is brought into contact with the first camera-side data terminal; and a ninth terminal that is brought into contact with the third camera-side data terminal, wherein the eighth terminal is positioned between the seventh terminal and the ninth terminal.

Abstract: A movable unit of an optical module having an image shake correction function is supported by a gimbal mechanism so as to be rotatable around a first axis R1 and a second axis R2. The movable body is driven by a shake-correction magnetic drive mechanism including magnets and fixed to the movable body. The movable body further includes a lens-moving magnetic drive mechanism to move a lens module in an optical axis direction. The lens-moving magnetic drive mechanism includes a lens-moving coil fixed to the lens module 7 and a lens-moving magnet disposed radially outward of the lens-moving coil. The magnets and also serve as the lens-moving magnet and are disposed radially outward of a triaxial intersection.

Abstract: An optical lens assembly and a head-mounted display (HMD) is provided. The optical lens assembly includes a first optical element including a partial reflector and a quarter-wave plate, a second optical element including a reflective polarizer, and a varifocal lens disposed inside a cavity formed by the first optical element and the second optical element. The varifocal lens is a liquid crystal (LC) lens stack including a plurality of LC lenses. An LC lens of the plurality of the LC lenses has a plurality of optical states including an additive state that adds optical power to the varifocal lens and a subtractive state that removes optical power from the varifocal lens. The plurality of optical states provides a range of adjustment of optical power for the optical lens assembly.

Abstract: Techniques are provided for laser illumination employing closely spaced laser beams. A system implementing the techniques according to an embodiment includes a semi-cylindrical optical block comprising a curved surface and a planar surface. The system further includes two laser sources configured to direct first and second laser beams to the curved surface, such that the first laser beam enters and exits the block parallel to and offset from the planar surface by a selected translation distance, and the second laser beam enters the block at a critical angle relative to the planar surface. The critical angle is associated with total internal reflection of the second laser beam along the planar surface, such that the second laser beam exits the block parallel to, and separated from, the first laser beam exiting the optical block. The separation of the exiting first and second laser beams is controlled by the selected translation distance.

Abstract: A lens barrel moves a plurality of lens groups efficiently in an optical axis direction while inhibiting size of the lens barrel from increasing. The lens barrel comprises a plurality of holding members respectively holding optical components, respectively provided with cam followers, and supported movably in optical axis direction, a cam cylinder having cam grooves engaged with the cam followers, and held rotatably around an axis parallel to an optical axis, and a driving unit configured to drive one holding member out of the plurality in the optical axis direction. By driving the one holding member being in the optical axis direction, the cam cylinder rotates, and another holding member out of the plurality is driven in the optical axis direction. The driving unit includes a vibration-type linear actuator configured to generate thrust force to drive the one holding member by an elliptical vibration generated in a vibrator.

Abstract: The present disclosure provides a light valve, a display device and a display method. The light valve includes: at least one fixation member fixed onto a substrate; and at least one movable member capable of moving relative to the fixation member to switch the light valve between a first state where the light valve is provided with a slit through which a light beam passes and a second state where the light valve prevents the light beam from passing therethrough.

Abstract: A method for designing an optical lens with unequal thickness, comprising the steps of: (1) establishing a lens model in an optical software; (2) simulating a beam of incident light, and observing whether the incident light and the exit light are parallel; (3) if the incident light and the exit light are parallel, recording the curvatures and thicknesses of the incident surface and the exit surface of the lens model, and preliminarily preparing a lens; if the incident light and the exit light are unparallel, adjusting the thickness between the incident surface and the exit surface of the lens model until the incident light and the exit light are parallel, then recording the curvatures and thicknesses of the incident surface and the exit surface, and then preliminarily preparing a lens; (4) verifying whether the prepared lens is qualified, and if it is unqualified, returning to step (2).

Abstract: The information display apparatus configured to display video information of a virtual image on a reflecting surface of conveyance includes: a display configured to display the video information; and a virtual image optical system configured to display a virtual image at a front of the conveyance by reflecting light emitted from the display by means of the reflecting surface. The virtual image optical system includes a concave mirror and an optical element. The optical element is arranged between the display and the concave mirror, and is configured to correct distortion of the virtual image obtained so as to correspond to a viewpoint position of a driver on a basis of a shape of the concave mirror and a shape of the optical element. The information display apparatus further includes a virtual image double image conversion reducer configured to reduce double image conversion of the virtual image.

Abstract: An optical system including a plurality of lenses is provided. In particular, a horizontal field of view and a vertical field of view of the optical system are different from each other, and a horizontal effective focal length (EFL) and a vertical EFL of the optical system are different from each other. In addition, a retro-focus type optical system is formed in one of a horizontal direction or a vertical direction, and a telephoto type optical system is formed in the other of the horizontal direction or the vertical direction such that a beam pattern from a square-shaped light source is extended laterally.

Abstract: This disclosure is directed to system for transferring a substrate, such as a microscope slide, and holding the substrate within at least one device. The system includes a holder for holding the substrate and a gripper for transferring the substrate, such as between a cassette or stack and the holder. A method is also discussed herein.

Abstract: An optical device includes two prisms and a beamsplitter configuration. A first of the prisms has a first surface associated with a source and a second surface oblique to the first surface. A second of the prisms has a first surface associated with a detector and a second surface oblique to the first surface. The second surface of the first prism overlaps with the second surface of the second prism to define an interface region that partially extends along at least one of the second surfaces. The prisms are optically attached at the interface region, and the beamsplitter configuration overlies the interface region. A beam emitted by the source propagates through the prisms along two optical paths and reaches the detector as two coherent beams. Beams that propagate along the two optical paths are reflected from the beamsplitter configuration and transmitted by the beamsplitter configuration exactly once.

Abstract: An optical device includes two prisms and a beamsplitter configuration. A first of the prisms has a first surface associated with a source and a second surface oblique to the first surface. A second of the prisms has a first surface associated with a detector and a second surface oblique to the first surface. The second surface of the first prism overlaps with the second surface of the second prism to define an interface region that partially extends along at least one of the second surfaces. The prisms are optically attached at the interface region, and the beamsplitter configuration overlies the interface region. A beam emitted by the source propagates through the prisms along two optical paths and reaches the detector as two coherent beams. Beams that propagate along the two optical paths are reflected from the beamsplitter configuration and transmitted by the beamsplitter configuration exactly once.

Abstract: An illumination system for producing an illumination pattern for measuring the cornea of an eye and, in particular, for determining the topography thereof and in so doing facilitating distance-independent measurements. The illumination system according to the invention for determining the topography of the cornea of an eye includes an illumination unit and a unit for producing an illumination pattern, wherein the illumination unit includes a plurality of illumination modules. A lens array which produces a spatially distributed, collimated illumination pattern is used as a unit for producing an illumination pattern. The illumination system produces an illumination pattern, by which the topography of the cornea of an eye can be determined. Here, the illumination system is designed as a compact module, and so it can be easily combined with other measurement systems, without colliding with the beam paths thereof.

Abstract: A system of contact lenses includes at least two contact lenses, each lens having a visual correction for a non-rotationally symmetric eye aberration. Each lens has a different level or degree of a stabilization that is characterized by a thickness differential between a thickness of a stabilization zone and a thickness of a non-stabilization zone.