Abstract: An optical lens includes a first lens group with a negative refractive power, an aperture stop, and a second lens group with a positive refractive power. The first lens group includes a first aspheric lens and a second aspheric lens. The optical lens satisfies the conditions: 3.5>RT1>2.5 and 3.5>RT2>2.6, where RT1 is a ratio of a maximum axial thickness to a minimum axial thickness within a clear aperture of the first aspheric lens, and RT2 is a ratio of a maximum axial thickness to a minimum axial thickness within a clear aperture of the second aspheric lens.
Abstract: A lens system comprises a first electro-active lens comprising a first focus sensor coupled to a first processor and a second electro-active lens comprising a second focus sensor coupled to a second processor. The first focus sensor periodically generates electromagnetic signals and detects electectromagnetic signals generated by the second focus sensor. The second focus sensor periodically generates electromagnetic signals and detects electectromagnetic signals generated by the second focus sensor. The first processor receives an indication of the second electromagnetic signals and, based on the received indication of the second electromagnetic signals, determines a relative convergence angle between the first and second electro-active lenses. Based on the determined relative convergence angle, the first processor determines a focal setting for the first electro-active lens and controls an electroactive element in the first electro-active lens, based on the determined focal setting.
November 10, 2016
Date of Patent:
November 5, 2019
Robert Fryers, Stephen Russell Taylor, Neil D'Souza-Mathew
Abstract: A beam steering device, an optical apparatus including the beam steering device, and a beam steering method are provided. The beam steering device includes a polarization converter adjusting a polarization direction of light that is emitted from a light source, and an antenna array receiving the light from the polarization converter and emitting light in different propagating direction depending on the polarization direction of the light from the polarization converter.
Abstract: A progressive multifocal lens adapted to correct a user's vision and including a first major surface and a second major surface, wherein the first major surface is positioned closest to the user's eye when the progressive multifocal lens is worn by the user, the progressive multifocal lens including: a far-distance vision region having a first refractive power, a near-distance vision region having a second refractive power, an intermediate-distance vision region having a third refractive power, and a first and a second progressive region, a main line of sight extending from the far-distance vision region to the near-distance vision and passing through the intermediate-distance vision region. The first progressive region joins the far-distance vision region and the intermediate-distance vision region and the second progressive region joins the intermediate-distance vision region and the near-distance vision region.
Abstract: An optical apparatus includes a lightguide and an optical combiner. The lightguide receives display light having an initial cross-section size and guides the display light down the lightguide. The lightguide includes internal optical elements that redirect the display light out of the lightguide with an expanded cross-section size that is larger than the initial cross-section size. The optical combiner combines the display light having the expanded cross-section with ambient scene light. The optical combiner includes an ambient scene side, an eye-ward side, and one or more reflective optical elements that pass at least a portion of the ambient scene light incident along an eye-ward direction on the ambient scene side through to the eye-ward side and redirect the display light having the expanded cross-section and incident on the eye-ward side to the eye-ward direction. The one or more reflective optical elements are substantially without lensing power.
Abstract: An apparatus for use in the measurement of the optical density of macular pigment in the human eye, and an apparatus for the use in measuring the lens optical density of a human eye. The apparatus is particularly applicable to flicker photometers, which are used to measure the macular pigment in the human eye.
Abstract: An optical imaging lens includes: first, second, third, fourth, fifth, sixth and seventh lens element, the first lens element has positive refracting power and an image-side surface with a concave portion in a vicinity of its periphery, the second lens element, the sixth lens element and the seventh lens element are made of plastic, the third lens element has an object-side surface with a concave portion in a vicinity of its periphery and an image-side surface with a concave portion in a vicinity of the optical axis, the fourth lens element has an object-side surface with a convex portion in a vicinity of the optical axis, the fifth lens element has an object-side surface with a concave portion in a vicinity of the optical axis. In addition, ?3 and ?5 are the Abbe numbers of the third and the fifth lens element respectively, and satisfying the relationship: ?3+?5?100.000.
Abstract: In a lens holder driving device, each of an upper plate spring and a lower plate spring, which are respectively provided on an upper side and a lower side of a lens holder, has an inner peripheral side end fixed to the lens holder, an outer peripheral side end fixed to a fixing part, and a plurality of arms. The plurality of arms of the upper plate spring and the plurality of arms of the lower plate spring have substantially identical shapes in a plan view. Each of the plurality of arms includes at least one U-turn shaped portion that is folded over. Either the upper plate spring or the lower plate spring has at least one stretchable and flexible resin that is provided so as to straddle over the mutually opposing parts of the U-turn shaped portion of the plurality of arms.
Abstract: A zoom lens system includes: a first lens group having a positive refractive power; a second lens group having a negative refractive power; a third lens group having a positive refractive power; a fourth lens group having a positive refractive power; a fifth lens group having a positive refractive power; and a sixth lens group having a positive refractive power, wherein the first to sixth lens groups are sequentially arranged along an optical axis from an object side to an image plane side, and zooming is performed by moving at least one of the second lens group, the fourth lens group and the fifth lens group along the optical axis. A distance between a focal point of light having a first wavelength and a focal point of light having a second wavelength is about 50 ?m or less at a wide-angle position and a telephoto position. The first wavelength corresponds to green light, the second wavelength corresponds to near infrared (NIR) light.
Abstract: A lens moving apparatus includes a bobbin on which a first coil is disposed, a first magnet disposed around the bobbin to face the first coil, and a housing, which is disposed to surround at least a portion of the bobbin and has a first magnet mounting seat, which receives the first magnet, wherein the housing is provided with an adhesive inlet, which allows a side portion of the first magnet mounting seat to communicate with an outside surface of the housing.
October 15, 2015
Date of Patent:
October 22, 2019
LG Innotek Co., Ltd.
Jae Hong Cho, Seung Taek Shin, In Jae Yeo, Sang Hee Lee, Jin Suk Han, Jung Cheol Kim
Abstract: A head-up display system includes a display unit and a reflective element. The display unit having a first and a second display areas includes a display panel, a first light source module, and a second light source module. The display panel has a first and a second pixel areas. The first and the second light source modules respectively provide a first and a second light sources. The first light source corresponds to the first pixel area to make the first display area display a first image frame. The second light source corresponds to the second pixel area to make the second display area display a second image frame. The reflective element is located on a transmission path of the first image frame and not located on a transmission path of the second image frame, and reflects the first image frame from the first display area to a target element.
Abstract: A lens module includes a first lens, an object-side surface thereof being convex; a second lens, both surfaces thereof being convex; a third lens, both surfaces thereof being concave; a fourth lens having negative refractive power, both surfaces thereof being convex; a fifth lens, an object-side surface thereof being concave; and a sixth lens, an object-side surface thereof being convex. The first to sixth lenses are sequentially disposed in numerical order from the first lens to the sixth lens from an object side of the lens module toward an image side of the lens module.
Abstract: A variable focal length optical assembly may include a deformable entry lens element, a deformable first reflective element and a deformable second reflective element. Using a controller coupled to the deformable elements, an external force such as a mechanical, electrical, electromechanical, or electromagnetic force is applied to the deformable elements to provide any number of different focal lengths. Since the deformation of the deformable elements, and consequently the changes in focal length, occur much faster than the playback frame rate, a number of sub-frames, each containing an image obtained at a different focal length, are associated with each playback frame. The availability of multiple images in the form of sub-frames permits the selection of an optimal image for inclusion in the final playback frame sequence. The availability of multiple images in the form of sub-frames at different focal lengths also permits the seamless incorporation of zoom-in and zoom-out effects.
Abstract: A lighting device includes a light source and a light distributor disposed on a light emission side of the light source. The light distributor includes an entrance surface through which light enters and an exit surface through which the light that enters through the entrance surface exits. At least one of the entrance surface and the exit surface includes concave regions. Each of the concave regions includes a smooth concave surface. The concave regions control distribution of light from the light source that is refracted or reflected by an optical lens or a reflective component.
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: An optical image capturing system includes, along the optical axis in order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. At least one lens among the first to the sixth lenses has positive refractive force. The seventh lens can have negative refractive force. The lenses in the optical image capturing system which have refractive power include the first to the seventh lenses. The optical image capturing system can increase aperture value and improve the imaging quality for use in compact cameras.
Abstract: Methods and systems are disclosed relating to a lens system that allows for simultaneous focus of near and far-away images with one pair of glasses, heads-up-displays (HUDs), and the like, without the need to move the user's eyes. This lens system may be used in a HUD application, for example, where the user may focus on a display lens that may be approximately one inch from the eye to view computer-generated information such as altitude, temperature, directions, and the like, and simultaneously view the individual's surroundings. The lens system may include a liquid lens that when modulated may vary from a near-focus state to a far-focus state rapidly by using an electrowetting or piezoelectric hydraulic actuator. This variable rate lens may be multiplexed at a rate that allows both near and far-away images to appear in focus simultaneously through the advantageous use of a user's persistence of vision.
Abstract: An ophthalmic examination suite including a base support having a base plate, a carriage movable on the base plate, the carriage being laterally movable between a first position and a second position relative to an instrument delivery stand, and a chair coupled to the carriage, the chair being configured to receive a seated patient thereon.
July 18, 2016
Date of Patent:
October 15, 2019
RELIANCE MEDICAL PRODUCTS, INC.
Gary G. Schwaegerle, Michael A. Carvajal, Deepak Sridhara
Abstract: An electronic device on which an exterior surface mounting member is mounted is provided. The electronic device includes an external housing including a first plate and a second plate that is directed opposite to the first plate, and at least one electronic component that is included within the external housing. The first plate may include a transparent plate including a first surface that forms an outer surface of the first plate and a second surface that is directed opposite to the first surface, and a structure that is interposed between the transparent plate and the second plate, and includes a third surface that faces the first plate and a fourth surface that is formed opposite to the third surface, the structure containing a transparent or translucent material.