Abstract: A method for adjusting a position of a first image stabilization unit and/or a second image stabilization unit of an optical system is provided. The method comprises the steps of detecting a movement of the optical system by means of an angle-of-rotation sensor and determining a bending angle of a first hinge part relative to a second hinge part of a folding bridge of the optical system. Furthermore, a correction angle is determined based on the bending angle. The first image stabilization unit is rotated about the correction angle relative to a first housing and/or the second image stabilization unit is rotated about the correction angle relative to a second housing.

Abstract: A projector device is provided. The projector device includes a projector unit, an optical beam splitting module and a first image forming element. The projector unit forms a beam projecting image. The horizontal projection width of the beam projecting image is smaller than the vertical projection width of the beam projecting image. The optical beam splitting module projects one or multiple projection sub-images according to the beam projecting image. The projection sub-images are projected to the first image forming element to form one or multiple projection images. Thus, the projector device obtains multiple projection images from a single image source, and the placement of the image forming elements in the projector unit may be adjusted to obtain the projection images with the best image ratios and the best resolutions. The projector device may be suitable for a head up display.

Abstract: A combiner for a head-up display apparatus has: a front surface; a rear surface; a plurality of grooves formed in a stripe shape so as to penetrate between the front surface and the rear surface in an upper end section; and a plurality of reflective protrusions each formed between each groove in the upper end section. Each reflective protrusion: has a triangular cross section; extends between the front surface and the rear surface; forms a pair of planar reflective surfaces inclined relative to the horizontal plane as a result of interposing therebetween a vertical angle pointing upwards in the triangular cross section; and reflects light to the side by using the reflective surfaces. The angle of the vertical angle in each reflective protrusion gradually increases from either the front surface or the rear surface, towards the other.

Abstract: The present invention relates to a new type of collapsible virtual reality headset to view a three-dimensional environment on a smart device that can be folded into a self-contained package for compact storage and ease of portability. Through its design of structural folds, the collapsible virtual reality headset offers portability, durability, and adaptability to be mounted to headphone, headgear, and/or to be used with a haptic device. Users of the invention download software applications onto their smart devices and use this display apparatus to view the virtual stereoscopic images or video through left and right lens systems. Users of this invention can adjust the pupillary distance and the distance between the lenses from the smart device display for optimal user comfort. The invention is made up of material that makes it water resistant and may be stored in one's bag or pocket when configured in its compact form.

Abstract: An ophthalmic surgical apparatus may include a tower extending upward from a support base, and a user-positionable arm extending from the tower to support an optical instrument attached to a distal end of the user-positionable arm. The user-positionable arm may include four members that are pivotably connected to each other. An electromagnetic brake strut may be pivotably attached in a diagonal relationship to at least two of the four members. The electromagnetic brake strut may include a rotatable lead screw having first and second lead screw end regions and a nut attached to the first pivot joint. The first lead screw end region may be threadably received into the nut. An electromagnetic clutch allows lead screw rotation when an electrical voltage is applied thereto. The electromagnetic clutch may be attached to the second pivot joint and may include a bearing that supports the second lead screw end region.

Abstract: The optical material of the present invention contains one or more kinds of ultraviolet absorber (a) having a maximum absorption peak within a range of equal to or greater than 350 nm and equal to or less than 370 nm, in which a light transmittance of the optical material having a thickness of 2 mm satisfies the following characteristics (1) to (3), (1) a light transmittance at a wavelength of 410 nm is equal to or less than 10%, (2) a light transmittance at a wavelength of 420 nm is equal to or less than 70%, and (3) a light transmittance at a wavelength of 440 nm is equal to or greater than 80%.

Abstract: A hyper-osmotic contact lens including a contact lens including a central convex disc, a peripheral curved portion that extends radially from the disc, an annular groove formed in the disc and one or more apertures formed in the groove.

Abstract: An adaptive optical apparatus includes a wavefront correction unit configured to correct a wavefront aberration, a first scanning unit configured to be arranged to be optically almost conjugate to the wavefront correction unit, and scan light on an object in a first direction, a second scanning unit configured to be arranged to be optically almost conjugate to the wavefront correction unit, and scan light on the object in a second direction perpendicular to the first direction, and an optical element arranged in an optical path between the wavefront correction unit and the first scanning unit and arranged in an optical path between the first scanning unit and the second scanning unit.

Abstract: There is provided an optical system including: a first lens having positive refractive power; a second lens having positive refractive power; a third lens having refractive power and having a convex object-side surface; a fourth lens having refractive power; and a fifth lens having refractive power, wherein the first to fifth lenses are sequentially disposed from an object side, whereby spherical aberration and coma aberration may be improved to realize high resolution in images captured thereby and increase an amount of light incident through the lenses to an image sensor.

Abstract: A near eye or heads up display system includes a display engine, at least two optical waveguides, and a respective coating on at least one of the major surfaces of at least one of the waveguides. At least one such coating has a low reflectance for light within a specific wavelength range for the waveguide and incident on a major surface of the waveguide on which the coating is located at an angle below a low threshold angle relative to a normal, and has a high reflectance for light within the specific wavelength range for the waveguide that is incident on the major surface on which the coating is located at an angle above a high threshold angle relative to the normal.

Abstract: An apparatus for tracking eye gaze includes a capacitive sensor array having a plurality of capacitive sensors. The capacitive sensor array is configured to detect eye movement based at least on a proximity of the plurality of capacitive sensors to a part of an eye of a user (e.g., a bulge in the cornea). A frame of the apparatus is configured to be worn on a head of the user and configured to support the capacitive sensor array positioned in front of the eye. A control circuit of the apparatus is configured to receive signals from the capacitive sensor array. A body electrode of the apparatus is positioned on the frame and electrically connected to the control circuit, the body electrode configured to establish an electrical connection with a body of the user. A conductive line of the apparatus connects the body electrode to the control circuit.

Abstract: Provided is a wide angle lens system including: a first lens group having a negative refractive power; and a second lens group having a positive refractive power, wherein the first lens group and the second lens group are provided in that order from an object to an image, and the lens system satisfies a first conditional expression: 16<|L/f|<17.5 where L denotes a distance from a lens surface of the first lens group provided closest to the object to a lens surface of the second lens group provided closest to the image, and f denotes a focal length of the wide angle lens system.

Abstract: A lens for refractive tear shaping, having a curved lens body with a peripheral edge and a central opening therein. The central opening is shaped and sized and has a tear shaping edge structured to form a tear meniscus within the central opening. The tear meniscus being formed by interaction of a tear film of the eye and the tear shaping edge and having a posterior curvature conforming to an anterior corneal curvature and an anterior curvature. The anterior curvature is dependent on the size and shape of the central opening and structure of the tear shaping edge.

Abstract: A light deflector and an image forming apparatus including the light deflector are provided. The light deflector includes a polygon mirror made of plastic and a motor including a rotor. The rotor supports the polygon mirror and includes a base and a first protrusion protruding from the base toward the polygon mirror in an axial direction. The polygon mirror includes a main body having a plurality of reflecting surfaces, and a second protrusion protruding from the main body toward the base. The second protrusion has an end face and an inner face. The end face is in contact with the base in the axial direction, and the inner face is in contact with the first protrusion in a radial direction.

Abstract: Disclosed herein is a disposable cap for an eye imaging apparatus with an optical window and related methods. The disposable cap can comprise an optically transparent window cover, a ridge, a side wall and a locking element. The window cover can comprise a convex back surface to match a concave shape of the optical window. The ridge of the disposable cap can extend distally and radially outward from the window cover and the side wall can extend proximally and radially outwardly from the ridge. The locking element can comprise one or more radially inward projections and one or more radially outward releasing tabs. A disposable packaging shell of the disposable cap also disclosed. Disclosed herein is also a plug-in disposable system comprising the disposable cap and the disposable packaging shell, configured to enable the disposable cap to be attached to and detached from the eye imaging apparatus.

Abstract: A method for adjusting a position of a first image stabilization unit and/or a second image stabilization unit of an optical system is provided. The method comprises the steps of detecting a movement of the optical system by means of an angle-of-rotation sensor and determining a bending angle of a first hinge part relative to a second hinge part of a folding bridge of the optical system. Furthermore, a correction angle is determined based on the bending angle. The first image stabilization unit is rotated about the correction angle relative to a first housing and/or the second image stabilization unit is rotated about the correction angle relative to a second housing.

Abstract: An image processing apparatus includes a generation unit and a display control unit. The generation unit generates a subtraction image using a first region and a second region, the first region being a portion of a first fundus image acquired by performing autofluorescence imaging on a fundus of an eye to be inspected, the second region being a portion of a second fundus image acquired by performing autofluorescence imaging on the fundus of the eye to be inspected at a time different from that of the first fundus image and being at a position corresponding to the first region. The display control unit causes a display unit to display an image generated by superimposing information regarding the subtraction image at a position corresponding to the first and second regions on a fundus image acquired by performing autofluorescence imaging on the fundus.

Abstract: A light deflector includes: a polygon mirror made of plastic and having a plurality of reflecting surfaces; a motor including a rotor and configured to rotate the polygon mirror; and a pressing member configured to press the polygon mirror toward the rotor in an axial direction of the motor. The polygon mirror has a first surface having a polygonal shape, and a second surface opposite to the first surface in the axial direction and having a polygonal shape. The second surface faces the rotor. The polygon mirror includes a plurality of first contact portions configured to be in contact with and pressed by the pressing member, and the first contact portions are provided on the first surface at positions equally distant from an axis of the motor between each of vertices of the first surface and the axis of the motor.

Abstract: The automatic optometry analysis system for children includes a main control board for obtaining optometry data of a patient, and an upper computer connected with the main control board. The upper computer may carry out processing according to the optometry data obtained from the main control board, generate corresponding preliminary eyeglass prescription data, correct the preliminary eyeglass prescription data based on collected preset patient information, and generate a final eyeglass prescription suitable for the patient; wherein correction of the preliminary eyeglass prescription data based on the collected preset patient information includes the use of age-related correction coefficient to correct the preliminary eyeglass prescription data.

Abstract: Provided are a gradient index lens using the effective refractive index of a microstructure operating in the terahertz frequency regions and mid-infrared regions at wavelengths of 0.8 m to 3 mm and a method for manufacturing the same. Based on the effective medium theorem, the effective refractive index is controlled by using a structure smaller than the mid-infrared and terahertz wavelength, and a gradient can be provided for the refractive index in a radial direction and in an axial direction. Thus, beams in the mid-infrared and terahertz frequency region can be converged.