Abstract: Embodiments provide a lens moving apparatus including a housing for supporting a first magnet, a bobbin including a coil disposed on an outer surface thereof and inside the first magnet so as to move in the housing in a first direction parallel to an optical axis by electromagnetic interaction between the first magnet and the coil, and upper and lower elastic members, each of which is provided at the bobbin and the housing and includes an inner frame coupled to the bobbin and an outer frame coupled to the housing, wherein at least one of the upper and lower elastic members is constituted by a printed circuit board.

Abstract: A variable magnification optical system includes: a first lens group (G1) having a negative refractive power; a second lens group (G2) having a positive refractive power; an intermediate group (Gn) disposed closer to an image side than the second lens group (G2); and a vibration-reduction lens group (VR) disposed closer to the image side than the intermediate group (Gn) and configured to be movable so as to have a component in a direction orthogonal to an optical axis. The system performs varying magnification by changing at least the distance between the first lens group (G1) and the second lens group (G2) and the distance between the second lens group (G2) and the intermediate group (Gn), and the system satisfies Conditional Expression (1). 1.000<f(1˜Gn)t/ft<100.

Abstract: In order to provide a transmission type screen having a flat scattered intensity within a predetermined scattering angle, a transmission type screen (50) according to the present invention comprising a first surface (51), and a second surface (52) opposed to the first surface (51), wherein: the first surface (51) is equipped with a microlens array (57) including a plurality of microlenses; the second surface (52) is equipped with a light diffusion surface (60); and a diffusion angle ratio of a diffusion angle of the light diffusion surface (60) relative to a diffusion angle of the microlens array (57) is not less than 0.2 and not more than 0.4.

Abstract: The present disclosure provides an integrated optical component array and method of making an integrated optical component array useful for projection devices or other optical devices. The integrated optical component array can be a PBS array fabricated such that the individual PBS cubes having several elements can be assembled in a massively parallel manner and then singulated as individual optical components, and can result in a large reduction in manufacturing cost.

Abstract: The invention concerns an image-inverting system for a sighting telescope, where the image-inverting system has at least two lenses which are each held in a bearing with at least one tappet and are mutually displaceable parallel to an optical axis of the image-inverting system, where the displacement of the at least two displaceable lenses modifies a reproduction scale at which an image projected onto a first image plane of the image-inverting system is shown on a second image plane of the image-inverting system, and a guide rod with at least two curved guide channels, where the tappets engage in the guide channels, and at least a reinforcing ring which is arranged touching or affixed to the circumference of the guide rod for increasing the mechanical stability of the guide rod.

Abstract: An optical device includes a light source, which is configured to emit a beam of light at a given wavelength, and at least one scanning mirror configured to scan the beam across a target scene. Light collection optics include a collection optic positioned to receive the light from the scene that is reflected from the at least one scanning mirror and to focus the collected light onto a focal plane, and a non-imaging optical element including a solid piece of a material that is transparent at the given wavelength, having a front surface positioned at the focal plane of the collection lens and a rear surface through which the guided light is emitted from the material in proximity to a sensor, so that the collected light is guided through the material and spread over the detection area of the sensor.

Abstract: A casing of an optical scanning apparatus housing a rotary polygon mirror and an optical member: a mounting portion on which a sound insulation member separating the optical member from the rotary polygon mirror is mountable; a first support portion supporting a transparent member which covers an opening of the casing on which the sound insulation member is mounted; a second support portion supporting a transparent member which covers the opening of the casing on which the sound insulation member is not mounted and is thicker than the transparent member to be supported by the first support portion; and a bearing surface of the second support portion located on an inner side of the casing than a bearing surface of the first support portion so that light beam emission surfaces of the transparent members to be supported by the first and second support portions are on a substantially same plane.

Abstract: Optical stacks are described. In particular, optical stacks including reflecting-absorbing polarizers and quarter-wave plates are disclosed. The optical core of the optical stack—which includes a reflecting-absorbing polarizer with at least one skin layer including polarizing dye—may be co-extruded or co-stretched.

Abstract: Three-layer full-color dynamic electronic paper, comprising a substrate, a controller, a first EWOD display layer, a second EWOD display layer and a third EWOD display layer, wherein each of the first, second and third EWOD display layer is comprised of an upper transparent electrode plate, a hydrophobic insulating layer, pixel walls, colored ink, colorless liquid, a lower transparent electrode plate, an encapsulation adhesive, and a driving chip connected to the upper transparent electrode plate and the lower transparent electrode plate respectively; the lower transparent electrode plate of the third EWOD display layer is located above the substrate; the colored ink filled in the first, second and third EWOD display layer is cyan ink, magenta ink and yellow ink, respectively; and, the controller controls voltage waveforms of the three driving chips according to a subtractive color mixture principle of three primary colors for printing, so as to realize full-color displaying.

Abstract: A liquid surface in a culture vessel is irradiated with liquid-surface-measurement illumination light, and transmitted light that has passed through the liquid is detected by an imaging unit. A relative positional relationship between a focal plane of an image forming optical system and the culture vessel is changed, a detection signal for each position of the focal plane is obtained, and a liquid surface shape is estimated on the basis of the detection signal for each position of the focal plane. Then, on the basis of the estimated liquid surface shape, adjustment information for adjusting the optical characteristics of an adjustment optical system for adjusting refraction of light due to the liquid surface shape is acquired. After the optical characteristics of the adjustment optical system have been adjusted on the basis of the adjustment information, an image of a specimen is captured by irradiating the culture vessel with phase-contrast-measurement illumination light.

Abstract: A thermal weapon sight which includes a thermal imaging sensor, associated control and image processing computational elements, and a display includes one or more of improved reticle centering, shot indication and time lapse image capture, digital zoom, contrast enhancement that acts on displayed data only, and device features such as an eyepiece viewing option and controls disposable on a weapon that allow for weapon sight control without moving hands from weapon operation position.

Abstract: A two-dimensional scan type light scanning device is configured to perform oscillation of a mirror in a first direction and a second direction perpendicular to the first direction. The light scanning device includes a second actuating beam causing the oscillation of the mirror in the second direction, a differential calculation unit configured to calculate a difference between a bending amount of the second actuating beam at a time of an initial drive and a bending amount of the second actuating beam after a predetermined period of time, and a phase shift calculation unit configured to calculate an amount of phase shift between a driving signal for oscillating the mirror in the first direction and a signal representing a displacement of the mirror in the first direction, based on the difference.

Abstract: An optical scanning apparatus includes: a casing having a bottom face; a cylindrical portion having a first opening through which a laser beam from a light source passes; a light-transmitting member arranged between the cylindrical portion and a rotary polygon mirror; a plate spring fixing the light-transmitting member; and a sealing member between the cylindrical portion and the plate spring, wherein a width of the first opening narrows progressively in a insertion direction of the plate spring, the sealing member comes into contact with the cylindrical portion in a first region when the plate spring is inserted, and in a second region closer to the bottom face than the first region, a region, in which the sealing member comes into contact with the cylindrical portion, expands toward a center part from two end portions of a leading end portion of the sealing member as the plate spring is inserted further.

Abstract: A multilayer reflective polarizer convex along orthogonal first and second axes orthogonal to an optical axis passing thorough an apex of the multilayer reflective polarizer is described. The multilayer reflective polarizer has at least one first location having a radial distance r1 from the optical axis and a displacement s1 from a plane perpendicular to the optical axis at the apex, where s1/r1 is in a range of about 0.2 to about 0.8. The multilayer reflective polarizer may have at least one inner layer substantially optically uniaxial at at least one first location away from the apex. For an area of the reflective polarizer defined by s1 and r1, a maximum variation of a transmission axis of the reflective polarizer may be less than about 2 degrees.

Abstract: The slit lamp microscope comprises: a slit light optical system including a slit lamp, and a reflecting mirror or prism for reflecting a slit light from the slit lamp toward an eye of an examinee; and a microscope unit including an object lens, binocular eyepiece lenses, a magnification changing section, which changes magnifications of an image formed by light passing through the optical paths, being provided between the object lens and the eyepiece lenses, and an inward angle changing section, which changes a binocular viewing angle, being provided therebetween. A focal distance of the object lens is made shorter, by an optical path length of the inward angle changing section, than that of an object lens equipped with no inward angle changing section. The inward angle changing section is located closer to the object lens than to the magnification changing section.

Abstract: An optical beam steering device can include a first electrically conductive fluid having an optically reflective surface thereon, and this first electrically conductive fluid may include a material that deforms in response to application of a first magnetic field and/or first electric field thereto. This first electrically conductive fluid may be an optically reflective material. The optically reflective surface may at least partially cover a non-fluid substrate that maintains its shape in response to the application of the first magnetic field and/or first electric field. A sealed package may be provided, which includes the optical beam steering device, and the first electrically conductive fluid, the non-fluid substrate and an ambient within the package may be collectively configured to yield a substantially neutrally buoyant condition therein.

Abstract: A zoned waveplate has a series of transversely stacked birefringent zones alternating with non-birefringent zones. The birefringent and non-birefringent zones are integrally formed upon an AR-coated face of a single substrate by patterning the AR coated face of the substrate with zero-order sub-wavelength form-birefringent gratings configured to have a target retardance. The layer structure of the AR coating is designed to provide the target birefringence in the patterned zones and the reflection suppression.

Abstract: A control circuit includes: an angular velocity calculator calculating an angular velocity of a mirror based on an angle of the mirror; a target angular velocity calculator calculating a target value of the angular velocity; a resonance frequency detector detecting a frequency of vibration of the mirror using the angular velocity and target value; a drive waveform generator generating a drive signal having sawtooth waveform; and an unnecessary vibration controller optimizing the drive signal to reduce an unnecessary vibration of the mirror based on the frequency of vibration of the mirror and providing piezoelectric elements with voltage according to the optimized drive signal. The resonance frequency detector detects the frequency of vibration of the mirror using a waveform and the target value of the angular velocity of the mirror during a duration in which the drive signal is transmitted to the unnecessary vibration controller from the drive waveform generator.

Abstract: A microscope lens system includes a body having a surface, a microlens, and an aperture positioned between the microlens and the surface. In the embodiment, the body is configured to position a mobile device on the surface such that a camera lens of the mobile device is aligned with the aperture.

Abstract: An image display device includes a light source, a screen, a scanning unit, an optical system, a drive unit, a support base, and a fixed base. The screen is irradiated with light from the light source, and an image is thus formed on the screen. The scanning unit scans the light from the light source along multiple scanning lines on the screen. The optical system forms a virtual image using the light from the screen. The drive unit moves the screen in an optical axis direction. The support base supports the drive unit. The fixed base supports the support base via a damper. The support base is supported by the fixed base such that the support base has support rigidity higher in a first direction in which a visual distance of a display image is changed in association with the movement of the screen than in directions other than the first direction.