Abstract: A system and related methods for near-eye display of an image are provided. In one example, a near-eye display system includes a light source comprising a surface and a plurality of pixels having a pixel pitch of 5 microns or less. An aperture array is located between 2 mm and 5 mm from the surface of the light source. The aperture array comprises non-overlapping apertures that are each centered on a vertex of an equilateral triangle within a grid of equilateral triangles. The center of each aperture is spaced from the center of each adjacent aperture by an aperture spacing of between 1 mm and 9 mm. The aperture array selectively passes the light emitted from the pixels to display the image without a double image condition.

Abstract: The present invention relates to a substrate bearing a solar-control multilayer stack, and to a multiple glazing unit and to a laminated glazing unit incorporating at least one such substrate bearing a solar-control stack. The multilayer stack comprises three functional films, each film, starting from the substrate, being thicker than the preceding one, and four transparent dielectric coatings. The ratio of the optical thickness of the third dielectric coating, to the optical thickness of the final dielectric coating, lies between 2 and 3.2, and the ratio of the optical thickness of the third dielectric coating, to the optical thickness of the second dielectric coating, is either between 0.6 and 0.91 or between 1.15 and 1.7. The invention is applicable, in particular, to production of high-selectivity solar-control glazing units.

Abstract: A three-dimensional image display apparatus includes: an image output unit that outputs image light that has a particular polarization, the image output unit having: a retaining substrate including a transparent glass; an optical element retained by the retaining substrate; and a resin polarizing plate pasted with a first adhesive layer on a side of the retaining substrate opposite to a side where the optical element is retained; and a retarder that is pasted onto the polarizing plate with a second adhesive layer and has: a transparent resin base; and a plurality of phase retarding parts that are provided on the resin base and output the image light as mutually differently polarized light, the image light having been incident on the plurality of phase retarding parts, wherein the second adhesive layer is as hard as or harder than the first adhesive layer.

Abstract: Provided are: a zoom lens which exhibits a large variable-power ratio, an increased degree of freedom with respect to aberration correction, and which has been achieved having a sufficient reduction in size in the optical axis direction; and an imaging device equipped therewith. The zoom lens includes at least, from the object side, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group, and a fifth lens group, in that order. In the zoom lens, prescribed conditions are satisfied.

Abstract: Dental/medical/surgical loupes have an improved declination angle to reduce neck and back strain. Eyeglass frames are provided with carrier lenses having bottom edges. A hole is provided in each carrier lens, each hole having an outer periphery that extends below the bottom edge of the carrier lens, resulting in a pair of opposing pointed ends. A pair of ocular devices are cemented in a respective one of the holes, such that a portion of the ocular body also extends below the bottom edge of the carrier lens. Each ocular is then cemented or otherwise permanently affixed into position to achieve a desired declination angle. For added stability, a pair of holes may be formed into the body of each ocular, each pair of holes being physically aligned with the two opposing pointed ends of the carrier lens associated with that ocular.

Abstract: Provided is a zoom lens having, in order from an object: a first lens group (G1) having positive refractive power; a second lens group (G2) having negative refractive power; and a third lens group (G3) having positive refractive power. The first lens group (G1) and the third lens group (G3) respectively move toward the object upon zooming from the wide-angle end state to the telephoto end state. The first lens group (G1) includes a diffraction optical element (DOE) in which two optical elements, constituted by optical materials of which refractive index difference at the d-line is 0.45 or less, are cemented and a diffraction optical surface (corresponding to the optical surface with the radius of curvature R8 in FIG. 1) on which diffraction grating grooves are formed, exists on the interface of the two optical elements. The zoom lens satisfies the following conditional expressions: 0.05<?1/ft<1.00, and 3.0<?d/y<10.

Abstract: An infrared transmission large-area shutter is provided. The infrared transmission large-area shutter includes a first contact layer on a substrate, a plurality of stacks formed in a two-dimensional (2D) array pattern on a first region of the first contact layer, each stack comprising a lower reflection layer, an active layer, an upper reflection layer, and a second contact layer which are formed sequentially in this order on the first contact layer, a first electrode formed on the first contact layer, a plurality of second electrodes on the second contact layers, a first polymer layer that surrounds sidewalls of the plurality of stacks on the first contact layer, and a second polymer layer, which is transparent to infrared rays, to cover the second electrode on the second contact layer. A through hole corresponding to the plurality of stacks is formed in the substrate.

Abstract: An optical instrument for light incoming along a principal optical axis includes a glass block and a subsurface object within the glass block. The subsurface object includes an arrangement of object marks. Each object mark includes a plurality of scattering layers stacked against the principal optical axis of the incoming light. First and second scattering layers of the plurality of scattering layers have different polarization responses.

Abstract: An electronically controllable optical device is provided which includes a cell maintaining an electro-optically controllable material, a photosensor associated with the cell, wherein the photosensor generates an input signal based on ambient light level, and a control circuit which receives the input signal and generates at least one output signal received by the cell. The device also includes a single switch connected to the control circuit, wherein actuation of the switch in predetermined sequences enables at least two of the following features of the device, a state change of the material, a system change between auto and manual modes, or a threshold value change for generation of the ambient light input signal, a device color change, a device tint change or a reset of the threshold value to the original factory setting. Methods of operation for the device are also provided. A control apparatus for the device is also disclosed.

Abstract: This invention is for a flexible telescope mirror. A mirrored film is stretched across a frame, and deformed into a rough parabola using a partial vacuum. The film is then deformed into a more perfect parabola using electric fields. In some embodiments, a feedback system based on a laser projector and a camera is used to fine tune the resulting parabola for optical performance. The invention allows the creation of large telescope mirrors for a substantially lower price than conventional ground glass mirrors, and allows the creation of substantially lighter mirrors, suitable for space-based applications.

Abstract: A resilient hinge device for connecting each of the arms to a front frame of spectacles in an articulated way, includes a tie bar having an axial extremity articulated with the arm and a resilient member including a substantially U-shaped sheet metal body, the resilient member being fitted onto the tie bar in such a way as to remain placed between the front frame and the arm to resiliently stress the arm towards preselected angular positions with respect to the front frame when the arm is rotated, these angular positions including a position in which the arm is open, suitable for wearing of the spectacles, and a closed position of the arm folded back against the front frame, and to return the arm to the open position when rotated beyond that position when opened too far with respect to the frame.

Abstract: An offset aperture two-axis gimbaled optical system comprises a two-axis gimbal and an optics assembly that is mounted on the inner gimbal and offset radially from the rotation axis of the outer gimbal. The optics assembly is suitably offset so that its optical aperture does not overlap the rotation axis of the outer gimbal and its optical aperture is symmetric about the rotation axis of the inner gimbal. In different applications, the offset aperture provides for reduced optical aberrations and improved utilization of the available packaging volume to accommodate multiple offset aperture optics assemblies.

Abstract: Provided are: a zoom lens which exhibits a large variable-power ratio, an increased degree of freedom with respect to aberration correction, and which has been achieved having a sufficient reduction in size in the optical axis direction; and an imaging device equipped therewith. The zoom lens includes at least, from the object side, a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group, and a fifth lens group, in that order. In the zoom lens, prescribed conditions are satisfied.

Abstract: The electrowetting display apparatus includes a display unit including: a first substrate at least one surface of which is electroconductive; a second substrate disposed to face the electroconductive surface of the first substrate; a hydrophobic insulation film disposed on the electroconductive surface side of the first substrate; a non-electroconductive oil which is provided between the hydrophobic insulation film and second substrate movably on the hydrophobic insulation film and includes a non-polar solvent and an azamethine-based colorant containing two colorant mother nuclei bonded via a linking group represented by ?N—; and an electroconductive hydrophilic liquid provided between the hydrophobic insulation film and second substrate to contact the oil; in which an image is displayed by applying a voltage between the hydrophilic liquid and the electroconductive surface of first substrate and changing the shape of interface between the oil and hydrophilic liquid.

Abstract: The present disclosure illustrates a five-piece imaging lens assembly which includes an aperture stop, an optical lens assembly, an image plane. The optical lens assembly, in order from an object side to an image side, includes a first lens element with positive refractive power adjacent to the optical axis and having a convex object-side surface, a second lens element with negative refractive power adjacent to the optical axis and having a concave object-side surface, a third lens element and a fourth lens element with refractive power adjacent to the optical axis, and a fifth lens element with negative refractive power adjacent to the optical axis and having a convex image-side surface. At least one of the object-side surface and the image-side surface of the fifth lens element has an inflection point. The image plane is for image formation for an object.

Abstract: A solid-state image pickup apparatus of the present invention includes a plurality of pixels arranged in a matrix. For the convenience sake, among the plurality of pixels, two pixels from which signals are not read in parallel are set to be a first pixel and a second pixel. A first reset transistor is disposed in an electrical path between a first reset power supply line and the control electrode of an amplifying transistor contained in the first pixel. A second reset transistor is disposed in an electrical path between the control electrode of the amplifying transistor contained in the first pixel and the control electrode of an amplifying transistor contained in the second pixel. A third reset transistor is disposed in an electrical path between the control electrode of the amplifying transistor contained in the second pixel and a second reset power supply line.

Abstract: A zoom lens includes: a first lens group having a positive refractive power which is fixed while changing magnification; a second lens group constituted by two or more magnification changing groups; an aperture stop; and a third lens group having a positive refractive power which is fixed while changing magnification, provided in this order from an object side. The magnification changing groups respectively move along an optical axis while changing magnification from a wide angle end to a telephoto end. The zoom lens satisfies the following conditional formula: u?/u<0.5??(1) wherein u is the angle of inclination of a paraxial chief ray of light that enters the lens surface most toward the object side within the first lens group, and u? is the angle of inclination of the paraxial chief ray of light that exits the lens surface most toward an image side within the first lens group.

Abstract: The optical system includes, in order from an object side, a front lens unit LF, an aperture stop S, a rear lens unit LR. The front lens unit includes a diffraction optical element Ldoe. A stop side positive lens Lsp disposed closest to the aperture stop among the rear lens unit satisfies 1.55?Ndsp?1.70, 30.0??dsp?50.0, and 5.0×10?4???dCsp?5.0×10?3. Ndsp and ?dsp repectively represent a refractive index and an Abbe number of the stop side positive lens for a d-line, and ??dCsp is represents a value defined by ??dCsp=?dCsp?(?0.17041×?gdsp+0.513577) where Ngsp, NCsp and NFsp respectively represent refractive indices of the stop side positive lens for a g-line, a C-line and an F-line. ?dCsp and ?gdsp are respectively defined by ?dCsp=(Ndsp?NCsp)/(NFsp?NCsp) and ?gdsp=(Ngsp?Ndsp)/(NFsp?NCsp).

Abstract: An imaging lens system includes, sequentially from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; and a third lens having a negative refractive power, wherein a viewing angle ? satisfies following condition, 0.3<|tan ?|<0.8.

Abstract: A zoom lens includes, in order from an object side to an image side, a first, a second, a third, a fourth and a fifth lens units respectively having positive, negative, positive, negative, and positive refractive powers. The first lens unit includes negative, positive, and positive lenses in order from the object side to the image side. The second lens unit includes negative, negative, and positive lenses in order from the object side to the image side. Each lens unit moves during zooming. The predetermined conditional expressions are satisfied.