Abstract: A camera, which is removably mountable on an ophthalmologic photographing apparatus including an illumination optical system configured to illuminate a subject's eye with illumination light, includes an imaging unit configured to form an image from return light from the subject's eye through a photographing optical system in the ophthalmologic photographing apparatus, a development unit configured to develop a moving image or a still image of the subject's eye based on an output signal from the imaging unit with using a development parameter based on a wavelength range of the illumination light, and a display unit configured to display the moving image or the still image developed by the development unit.

Abstract: An optical guidance device for optical guidance of a light beam has a first part, in a transparent material, adapted for propagating the light beam by successive reflections. This first part comprises an extraction section comprising at least one microstructure comprising a plane surface adapted to enable the rays of the light beam striking the plane surface to emerge from the guidance device. The device also comprises a second part, in a material substantially identical to that of the first part, comprising a section comprising at least one microstructure with a shape complementary to that or those of the extraction section. The device also has a layer of adhesive assembling the first and second parts in such a way that any microstructure of the extraction section is separated from its complementary microstructure by a transparent medium of substantially constant thickness.

Abstract: The invention provides an optical imaging lens assembly comprising, in order from an object-side to an image side, a first aspherical positive lens element and a second aspherical negative lens element, each comprising an object-side surface and an image-side surface. Elements of the optical imaging lens assembly may be configured to satisfy the relations (i) T<1.2 f, (ii) 1.1<f/f1<1.5, (iii) ?1.5<f/f2<?0.6, (iv) 0.2<R1/f<0.5, and (v) ?0.25<K1<?0.05, wherein f is focal length of the lens assembly, f1 is focal length of the first lens element, f2 is focal length of the second lens element, R1 is radius of curvature on the object-side surface of the first lens element, K1 is conic of the object-side surface of the first lens element, and T is total track length of the optical lens.

Abstract: Provided are methods for determining an axis of best vision of an eye or for objectively determining a visual axis of an eye and for making the most accurate measurement of refraction. Generally, an optical measuring device or instrument projects laser beams into the eye during a scan. Positions of the projected beams are detected and measured on the retina to produce a set of projections. Wave front tilt of radiation that is backscattered from the retina is calculated as a best fit from the set of projections. The axis of best vision or the visual axis is reconstructed from a set of those traces of chief rays exiting from the eye that cross the nodal point of the optical system of the eye and that are normal to the wave front tilts. Measuring with the Styles Crawford scans centered over this axis provides the most accurate objective refraction.

Abstract: An imaging lens barrel includes: a barrel body; a rotating body; a magnetic sensor device; a phase difference calculation section; a correction table memory; a phase difference correction section configured to, when a relative position between the rotating body and the magnetic sensor device according to a posture of the imaging lens barrel is different from that of when a correction table is created, correct a phase difference calculated by the phase difference calculation section according to the relative position and to correct the phase difference calculated by the phase difference calculation section, using a correction value corresponding to the corrected phase difference, and to, when the relative position is not different from that of when the correction table is created, correct the calculated phase difference, using a correction value corresponding to the phase difference calculated by the phase difference calculation section; and an absolute position calculation section.

Abstract: An ophthalmology apparatus includes: an aberration measuring unit configured to measure an aberration of an eye to be examined on the basis of returned light from the eye to be examined irradiated with measurement light, and a change unit configured to change a size of an irradiating area in the aberration measurement unit to be irradiated with the returned light.

Abstract: An image capturing optical lens assembly includes six lens elements with refractive power, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The first lens element with positive refractive power has a convex object-side surface and a concave image-side surface. The second lens element has refractive power. The third lens element with refractive power has a convex object side surface and a concave image-side surface. The fourth lens element has refractive power. The fifth lens element with refractive power has an aspheric object-side surface and an aspheric convex image-side surface. The sixth lens element with refractive power has an aspheric object-side surface and an aspheric concave image-side surface, and the sixth lens element has at least one inflection point on the image-side surface thereof.

Abstract: An optical system support, especially for an optical measuring device, includes a base on which a mechanism for fixing an electro-optical transceiver system is provided. The optical system support is a ceramic optical system support.

Abstract: A processing apparatus is provided that receives and processes an anterior segment three-dimensional image of a subject's eye. The apparatus includes a first SS position specifying unit that accepts identification of at least three SS positions of the subject's eye, using at least two representative images from among two-dimensional tomographic images constituting the three-dimensional image, a true circle calculating unit that calculates a reference true circle passing through the at least three SS positions, and a second SS position specifying unit that identifies the SS positions in non-representative images other than the representative images, based on the reference true circle.

Abstract: A five-piece wide-angle lens module includes a first lens, a second lens, a third lens, a stop, a fourth lens and a fifth lens, which are sequentially arranged from an object side to an image side. The first lens has a negative refractive power, a convex surface on the object side, and a concave surface on the image side. The second lens has a negative refractive power and two concave surfaces on both sides. The third lens has a positive refractive power. The fourth lens has a positive refractive power and two convex surfaces on both sides. The fifth lens has a negative refractive power. Thereby, the five-piece wide-angle lens module can provide good image quality even in the environment with severe temperature changes.

Abstract: A system for fitting glasses frames to a user is disclosed. The system includes an interface for receiving images of a user's head at different angles. A processor compares user head measurements determined from the images with a database of glasses frame information that includes glasses frame measurements. One or more glasses frames are selected based on the comparison and the selected glasses frames are output.

Abstract: Irradiance control systems (“ICSs”) that control the irradiance of a beam of light are disclosed. ICSs include in a beam translator and a beam launch. The beam translator translates the beam substantially perpendicular to the propagating direction of the beam with a desired displacement so that the beam launch can remove a portion of the translated beam and the beam can be output with a desired irradiance. The beam launch attenuates the irradiance of the beam based on the amount by which the beam is translated. ISCs can be incorporated into fluorescent microscopy instruments to provide high-speed, fine-tune control over the irradiance of excitation beams.

Abstract: Systems, method, and non-transitory computer readable medium for imaging an object. The system includes a scanner. The scanner positions a spot of light from a light source on the object along a scanning path. The scanning path includes a plurality of scan lines. The spot moves along the scanning path at a scanning velocity. The scanning velocity is not constant. The intensity of the spot of light is modulated as a function of the scanning velocity. The system includes a detector that is arranged to output data associated with positions along the scanning path. The system includes one or more processors that perform calculations. Pixels are calculated based on the output data. The image is constructed of the object based on the pixels.

Abstract: A method and a system is provided for configuring a device for correcting the effect of a medium on a light signal having propagated through the medium, the device including at least one optical element whose phase profiles are individually adjustable. The configuring system and method include propagating a reference signal and a disordered signal obtained at the output of the medium through the correcting device. An interference parameter is measured and optimized by modifying the phase profile of each of the optical elements of the correcting device. A method and a system is also provided for correcting the effect of a medium on a light signal having propagated through the medium.

Abstract: A tunable optical filter is formed in the structure of an etalon. A thin electro-optic ceramic substrate is fixed between two end substrates. Each end substrate has an inner parallel surface toward said electro-optic ceramic substrate covered by an electrode layer and a reflecting layer. An adhesive which attaches the electro-optic ceramic substrate to each first and second end substrates has a consistency so as to avoid stress on the electro-optic ceramic substrate. A voltage imposed on the electro-optic ceramic substrate by the electrode layers on the inner parallel surfaces of the first and second end substrates effectively controls an optical distance between the reflective coating layers on the inner parallel surfaces of the first and second end substrates of the etalon structure. The electro-optic ceramic substrate is preferably PMN-PT ((1?x)Pb (Mg? Nb?) O3-x—Pb Ti O3) and no more than 160 ?m thick.

Abstract: An optical lens assembly includes, in order from an object side to an image side, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. The first lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element has negative refractive power. The third lens element has refractive power. The fourth lens element with negative refractive power has an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof. The fifth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, and the image-side surface thereof has at least one convex shape in an off-axial region thereof.

Abstract: Processing a set of images is disclosed, including: receiving a set of images; and searching for a representation of a user's face associated with the set of images and a plurality of sets of extrinsic information corresponding to respective ones of at least a subset of the set of images. Rendering a glasses frame is disclosed, including: receiving a selection associated with the glasses frame; rendering the glasses frame using at least a representation of a user's face and a set of extrinsic information corresponding to an image in a recorded set of images; and overlaying the rendered glasses frame on the image.

Abstract: Provided is an ophthalmologic image pickup apparatus for measuring movement of an eye to be inspected at higher speed than a conventional one. The ophthalmologic image pickup apparatus for acquiring an image of an eye to be inspected based on return light from the eye to be inspected which is irradiated with measuring light via a scanning unit, includes: a position acquiring unit for acquiring a plurality of positions of characteristic portions in the image of the eye to be inspected based on the return light from the eye to be inspected corresponding respectively to a plurality of scanning lines of the scanning unit in the image of the eye to be inspected; and a measuring unit for measuring movement of the eye to be inspected based on the plurality of positions.

Abstract: The present disclosure relates generally to a system and method for determining the refractive error of a patient, more particularly determining the patient's refractive error by using a computerized screen, and providing the patient with a prescription for the patient's preferred type of corrective lenses. The system and method do not require the trip or expense of a doctor visit, and are optimized for convenience and cost effectiveness. In a general embodiment, the present disclosure provides a method for determining a corrective lenses prescription of a patient. The method includes, separately, for each eye of the patient, determining the astigmatism prescription of the patient via a computerized screen, and determining the power of the corrective lenses prescription of the patient via the computerized screen.

Abstract: An image display to provide a realistic 3D stereoscopic image of a desired scene. The display device is comprised of directional pixels. Each directional pixel has a plurality of facets having a constrained viewing angle. Each facet has a point source of light that emits light with a controllable luminescence and hue. In this regard, each facet of the directional pixel has a constrained viewing angle and independent luminance and hue.