Abstract: A contact lens. The contact lens comprises an acceleration sensor for detecting a structure-borne sound produced by a wearer of the contact lens.

Abstract: A measurement device including a light source configured to emit a broad-band light beam, an interference section configured to split the broad-band light beam into a measurement light beam and a reference light beam, and to generate an interference light beam from the reference light beam and a measurement light beam reflected from an object after shining the measurement light beam onto the object, a sweeper section configured to perform wavelength sweeping of the interference light beam, and a detection section configured to detect an interference light beam output from the sweeper section.

Abstract: Method for determining an ophthalmic equipment which is adapted to the characteristics of at least a given wearer, the method being implemented by a processor, the method comprising: —providing access to digital content of the wearer (S100), —analyzing the digital content of the wearer so as to extract wearer data (S200), —processing the wearer data so as to obtain a set of characteristics (S300), the set of characteristics comprising at least one category and at least one associated score, and —determining at least one component of an ophthalmic equipment based on the obtained set of characteristics (S400).

Abstract: An imaging lens includes a focusing lens assembly with a positive refractive power, which can move in a direction of an optical axis depending on an object distance and have two positive lens groups with an aperture disposed therebetween, and a fixed lens assembly with a negative refractive power fixed near the imaging plane. The focusing lens assembly includes a 2-division-3-piece front group with positive refractive power consisting of single lens and doublet lenses, the aperture, and a 2-division-3-piece back group with positive refractive power consisting of doublet lenses and single lens. The focusing lens closest to the object side is a meniscus lens convex at the object side and concave at an image side and has the weakest refractive power out of all. The front group and the back group relative to the aperture have focal lengths f1 and f2 complying with correlation of 0.9<f1/f2<1.3.

Abstract: The invention is related to contact lenses that not only comprise the much desired water gradient structural configurations, but also have a minimized uptakes of polycationic antimicrobials and a long-lasting surface hydrophilicity and wettability even after going through a 30-days lens care regime. Because of the water gradient structural configuration and a relatively-thick, extremely-soft and water-rich hydrogel surface layer, a contact lens of the invention can provide superior wearing comfort. Further, a contact lens of the invention is compatible with multipurpose lens care solutions present in the market and can endure the harsh lens care handling conditions (e.g., digital rubbings, accidental inversion of contact lenses, etc.) encountered in a daily lens care regime. As such, they are suitable to be used as weekly- or monthly-disposable water gradient contact lenses.

Abstract: An apparatus and a method are described herein related to the art of monitor virtualization. A monitor-virtualization system, such as a head-mountable device, an ophthalmic device or an intraocular implant, can render a virtual monitor in augmented reality. A dimmable occlusion matrix can be operated such as to make the image of the virtual monitor substantially opaque. A coordinator module can synchronize the activities of monitor positioning and occlusion masking. The virtual monitor can be anchored to real-world artifacts. Various dimming modes of the occlusion matrix reduce operator fatigue. The apparatus may operate in smart sunglass mode when the virtual monitor function is paused. The virtual monitor can be hidden or visualized differently when thresholds in terms of user geolocation or viewing angle are breached.

Abstract: Disclosed are systems and methods for generating wide-field optical coherence tomography angiography (OCTA) images. In embodiments, multiple OCTA scans of a sample are automatically acquired at overlapping locations. The systems and methods include functionality to adaptively control the scanning procedure such that eye blink and eye motion events are detected in real time and accounted for during 3D scan acquisition. Also disclosed are methods for detecting and correcting motion-related artifacts in OCTA datasets which allow for the longer scan times over larger fields of view required for wide-field imaging. These methods may include division of en face angiogram images into a set of motion-free parallel strips, and application of gross and fine registration methods to align overlapping strips into a motion-corrected composite image. A series of overlapping motion-corrected composite images may be combined into a larger montage to enable wide-field OCTA imaging using multiple OCTA scans.

Abstract: An eyeglass frame with an eyeglass front for receiving at least one eyeglass lens, and with a left and right temple, which are pivotably connected to the eyeglass front via a pivot joint connection for holding the eyeglass frame on the head of an eyeglass wearer, wherein the eyeglass front forms at least an upper frame section, wherein the temples can be pivoted relative to the eyeglass front from a position of use into a closing position, in which the temples are arranged above the upper frame section, and vice versa. The temples are arranged in a crossed position relative to each other in their closing position above the upper frame section.

Abstract: The present disclosure provides glasses including: a glasses rim; a glasses temple comprising a control circuit or a battery; a rotating shaft configured to connect the glasses rim and the glasses temple, so that the glasses rim and the glasses temple are able to relatively rotate around the rotating shaft, the rotating shaft being disposed with a rotating shaft wiring channel along an axial direction; a connection wire passing through the rotating shaft wiring channel and extending to the glasses rim and the glasses temple, respectively; a speaker comprising an earphone core and being connected to the glasses temple, the control circuit or the battery driving the earphone core to vibrate to generate a sound through the connection wire; and at least two microphones disposed in the glasses temple or the speaker, the at least two microphones being located at positions with different distances from a mouth of a user.

Abstract: An optical imaging system includes a first lens having a concave object-side surface, a second lens, a third lens having a concave image-side surface, a fourth lens having a concave object-side surface, and a fifth lens. The first to fifth lenses are sequentially disposed from an object side toward an imaging plane. The optical imaging system has a total number of five lenses having a refractive power. A radius of curvature of the image-side surface of the third lens is greater than a radius of curvature of an image-side surface of the second lens. 0?|n1?n2|?0.2 and TL/2Y<2.0, where n1 is a refractive index of the first lens, n2 is a refractive index of the second lens, TL is a distance from the object-side surface of the first lens to the imaging plane, and 2Y is a diagonal length of the imaging plane.

Abstract: An optical imaging system includes a first lens having a positive refractive power and a concave object-side surface, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens having a positive refractive power, and a fifth lens having a positive refractive power and a concave image-side surface. The first through fifth lenses are sequentially disposed in ascending numerical order from an object side of the optical imaging system toward an imaging plane of the optical imaging system.

Abstract: An optical system includes a first lens including a positive refractive power, a second lens including a positive refractive power and a convex image-side surface, a third lens, and a fourth lens. The optical system includes a fifth lens including a concave object-side surface and a concave image-side surface, and a sixth lens including an inflection point formed on an image-side surface thereof. The first to sixth lenses are sequentially disposed from an object toward an imaging plane.

Abstract: An ophthalmic apparatus includes an acquiring unit, an OCT unit, an analyzer, and a calculator. The acquiring unit is configured to acquire a dioptric power in a first region including a fovea of a subject's eye. The OCT unit is configured to acquire OCT data of a fundus of the subject's eye using optical coherence tomography. The analyzer is configured to specify a shape of the fundus by analyzing the OCT data. The calculator is configured to calculate a dioptric power in a peripheral region of the first region of the fundus based on the dioptric power in the first region and the shape of the fundus.

Abstract: Systems for determining an apex of curvature In an image, obtained from, a sample are provided. The systems include —an imaging system configured to obtain a plurality of scans of a sample using a radial pattern; and a processor associated with the imaging system. The processor is configured to segment and curve fit each of the plurality of scans to a surface of the sample; determine an apex. for each curve associated with each of the plurality of scans; determine a true apex, among all determined apexes using a derivative of least value; calculate an XY offset based on the determined true apex; map the true apex to an origin where X and Y are equal to zero; and adjust the coordinates associated with remaining apexes not determined to be the true apex based on the calculated offset.

Abstract: An optical imaging system includes a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. The first lens includes a convex object-side surface and a concave image-side surface. The second lens includes a concave object-side surface and a concave image-side surface. The third lens includes a concave object-side surface. The fourth lens includes a concave object-side surface. The fifth lens includes a concave object-side surface and a concave image-side surface. The first to fifth lenses are sequentially disposed from an object side toward an imaging plane.

Abstract: A method, system, and non-transitory computer readable medium for determining optical article feasibility are provided. The method includes acquiring a first input indicative of optical criteria associated with a lens via a user interface, acquiring a second input indicative of a lens selection via the user interface, identifying one or more frames, and determining whether each frame of the one or more frames and the lens selection are physically compatible by fit simulation performed based on three dimensional cutout data determined based on at least the optical criteria. A feasibility indication is provided to a user via the user interface for each of the one or more frames based on the determination.

Abstract: Folded digital cameras comprising a lens including a plurality of N lens elements marked Li where 1?i?N and an optical path folding element (OPFE), wherein a first lens element L1 faces an object side and a last lens element LN faces an image side, wherein at least one of the plurality of lens elements is located at an object side of the OPFE and has an associated first optical axis, wherein at least one other of the plurality of lens elements is located at an image side of the OPFE and has an associated second optical axis, wherein the lens has an effective focal length (EFL) and a f-number (f/#), and an image sensor having a sensor diagonal (SD), wherein the EFL can be varied continuously between a minimal EFLMIN and a maximum EFLMAX by independent movement of lens elements and of the OPFE along the second optical lens axis, and wherein EFLMAX/EFLMIN>1.5.

Abstract: An ophthalmic apparatus for examining the eyes of a patient includes a housing arranged in such a way to define at least a chamber. The housing includes at least an observation opening adapted to allow a patient to observe an internal volume of said at least a chamber along at least a corresponding predefined optical path. The ophthalmic apparatus includes regulation means capable of continuously regulating the pupil diameter of at least an eye of the patient.

Abstract: An optical imaging system includes a first lens having a positive refractive power, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, wherein an object-side surface of the fifth lens is concave; and a sixth lens having a negative refractive power, wherein the sixth lens has an inflection point formed on an image-side surface thereof, wherein the first to sixth lenses are sequentially disposed from an object side toward an imaging plane.

Abstract: The present application relates to a method for designing a nonsymmetric freeform surface optical system, and the method including the following steps establishing an initial plane system. The initial plane system is consistent with the expected system structure, but there is no focal power in the initial plane system. The image plane tilt angle of the initial plane system is defined as ?. The point-by-point method is used to calculate the coordinates and normal vectors of the data points used to construct the freeform surface. The iterative optical system is obtained by iteration; and the iterative optical system is optimized.