Abstract: An apparatus to treat refractive error of an eye comprises an optic comprising an optical zone and a peripheral defocus optical structure to form images of a plurality of stimuli anterior or posterior to a peripheral portion of a retina of the eye. In some embodiments, the peripheral defocus optical structure located outside the optical zone. In some embodiments, the peripheral defocus optical structure comprises optical power to focus light to a different depth of the eye than the optical zone. In some embodiments, the optic comprises one or more of a lens, an optically transparent substrate, a beam splitter, a prism, or an optically transmissive support.

Abstract: A microscope apparatus includes SLMs each having a modulation plane, an objective lens disposed on an optical path between the modulation plane and an object, and a computer for controlling the SLMs on the basis of a modulation pattern including a correction pattern for correcting aberration caused by a refractive index interface of the object. The computer determines a position of the correction pattern in the modulation pattern on the basis of inclination information of the refractive index interface with respect to a plane perpendicular to an optical axis of the objective lens.

Abstract: A slide system for optical microscopy using immersion fluid including a cover glass having a first refractive index and a transparent film having a second refractive index. The second refractive index of the transparent film is matched to the first refractive index of the cover glass. The transparent film protects the cover glass from immersion fluid used for optical microscopy and the transparent film is configured such that the immersion fluid used can be removed by lifting off the transparent film.

Abstract: A microscope system having a plurality of microscope modules connected to one another for data transfer purposes. The microscope system includes a central clock generator, the clock signal of which is provided to all microscope modules. The microscope modules are configured to use the clock signal or a clock derived therefrom as an internal clock. Moreover, a corresponding method for operating such a microscope system is described.

Abstract: The invention relates to an optical device (1), comprising: at least a first lens 100) having an adjustable focal length, wherein the first lens (100) comprises a container (2) that defines a volume (V) which is filled with a transparent fluid (F), and wherein the container (2) comprises a front wall (20), which front wall (20) comprises a transparent membrane (21) that is flexible and stretchable and a transparent lens shaper (22) that is immersed in the fluid (F) and connected to the membrane (21), so that the lens shaper (22) defines a curvature-adjustable area (23) of the membrane (21), and wherein the container (2) comprises a back wall (30) facing the front wall (20), wherein the fluid (F) is arranged between the front wall (20) and the back wall (30), and wherein the back wall (30) forms a lens.

Abstract: A digital slide scanning apparatus slide stage is configured to hold 1×3 and 2×3 glass slides. The slide stage is configured to alter its position by lateral shift or rotation to present the 1×3 or 2×3 sized recess to a slide rack for loading of the slide onto the stage. Also, a removable insert may configure the stage to hold a 1×3 glass slide when present and to hold a 2×3 glass slide when removed. Alternatively, a gripper stage is described herein that includes a fixed arm and a movable arm, each with one or more contact points configured to engage a side surface of the glass slide. Once the glass slide is secured between the contact points of the movable arm and the contact points of the fixed arm, the slide is further processed for scanning.

Abstract: A digital slide scanning apparatus that includes a scanning stage, a focusing sensor, an imaging sensor, and at least two processors. A main processor is configured to control the scanning stage to move a sample relative to the focusing sensor and the imaging sensor. The main processor controls the secondary processor to process focus buffers generated by the focusing sensor and image buffers generated by the imaging sensor. The secondary processor access each buffer and processes the data in the buffer to generate an average contrast vector for the buffer. The average contrast vectors for the focus and image buffers are then provided to the main processor for further processing in connection with autofocus and/or generation of a digital slide image.

Abstract: A liquid supplier includes: a supply port which supplies a liquid to a space between an objective lens and an observation object; and a recovery port which recovers the liquid supplied from the supply port, wherein the supply port and the recovery port satisfy a condition where positions of the supply port and the recovery port differ from each other in a direction of an optical axis of the objective lens or a condition where positions of the supply port and the recovery port with respect to the optical axis differ from each other in a direction perpendicular to the optical axis of the objective lens or both conditions.

Abstract: A folding frame for eyeglasses, the frame being structured to fold into a W-shape and thereby, dispose a frame front left half in parallel with a frame front right half, both left and right halves being disposed between respective left and right temple pieces. A first catch holds the left and right halves in parallel at a stored configuration, and a second catch holds the temple pieces in parallel at the stored configuration. An enlarged grip area is sometimes provided in at least one temple piece to facilitate one-handed orienting of the fully-deployed frame in registration on a user's head. Certain embodiments are configured to permit a user to cause a one-handed release and subsequent automatic frame deployment from a stored configuration to a first configuration wherein the frame front left and right halves are disposed in a common plane, and the temple pieces are disposed normal to that plane.

Abstract: An optical attachment for surgical loupe glasses is disclosed. The optical attachment for surgical loupe glasses includes a visor sized to cover at least a portion of a first carrier lens of the surgical loupe glasses. The optical attachment also includes at least one loupe orienting feature defined by the visor.

Abstract: A vision testing apparatus has a frame including a face plate with at least one eye shield having a viewing slot positioned in a viewing direction perpendicular to the face plate, at least one variable lens element including an outer rail and multiple regions of varying diopter power having a width that is equal to or greater than the width of the viewing slot of the eye shield, and adjustable controls for moving the variable lens element in a direction perpendicularly to the viewing direction along a plane of the face plate. The testing apparatus is portable and can be used in developing nations where visual acuity is not corrected because of lack of access to optometric care.

Abstract: A method for determining a property of an object is disclosed, which includes: recording a first image of the object from a first direction; recording a second image of the object from a second direction; determining a first position in the first image, the first position representing a location of the object, and a second position in the second image, the second position representing the same location of the object, for a multiplicity of locations of the object; and calculating a value of an object property for each of the multiplicity of locations of the object. The value assigned to a location of the multiplicity of locations of the object is calculated using an intensity value at the first position, which represents the location, in the first image and an intensity value at the second position, which represents the location, in the second image.

Abstract: An apparatus to treat refractive error of an eye comprises an optic comprising an optical zone and a peripheral defocus optical structure to form images of a plurality of stimuli anterior or posterior to a peripheral portion of a retina of the eye. In some embodiments, the peripheral defocus optical structure located outside the optical zone. In some embodiments, the peripheral defocus optical structure comprises optical power to focus light to a different depth of the eye than the optical zone. In some embodiments, the optic comprises one or more of a lens, an optically transparent substrate, a beam splitter, a prism, or an optically transmissive support.

Abstract: An optical device includes a substrate and a coating applied to the substrate, wherein the optical device has a first side exposed to an environment and a second side that is unexposed.

Abstract: Modular eyeglass frame system and methods for their use and manufacture. Exemplary frame systems include an eyeglass frame base having a top edge, a removable element having a top edge that substantially matches the top edge of the frame base, and one or more attachment elements operative to removably attach the removable element to the frame base. The frame base includes a first channel and a second channel suitable for partially enclosing a first lens and a second lens; and the removable element includes a first channel and a second channel, each removable element channel being configured such that when the removable element is attached to the frame base, the first and second channels of the frame base align with the first and second channels of the removable element to fully enclose a periphery of the first lens and the second lens. The one or more attachment elements secure the removable element to the frame base such that the two-piece frame system is substantially as durable as a solid one-piece frame.

Abstract: A lens moving apparatus is disclosed. The lens moving apparatus includes a bobbin equipped with at least one lens, a coil and a driving magnet arranged opposite to each other for moving the bobbin in an optical axis direction of the lens through interaction therebetween, a first circuit board for supplying electric current required by the coil, and a cover can and a base coupled to, contacted to, supported at, fixed to, or temporarily fixed to each other for forming a space in which the bobbin, the driving magnet, and the first circuit board are received, wherein the cover can is connected to a second circuit board having an image sensor mounted thereon.

Abstract: The disclosure relates to a sample carrier for accommodating a microscopic sample for examination or processing in a microscope system. The sample carrier is accommodatable in an accommodating device, such that the sample carrier in the accommodated state assumes a defined orientation relative to the accommodating device. The sample carrier has an individual sample carrier identifier and is designed to communicate with the microscope system and in the process to communicate the individual sample carrier identifier to the microscope system, such that a sample accommodated on the sample carrier is trackable.

Abstract: This invention is a novel retroreflective traffic stripe comprising an exposed top surface containing a widely spaced repeating pattern of linear light-turning prisms and a second repeating pattern of linear prisms between the light-turning prisms, over a bottom surface containing cube corner retroreflective prisms. The two types of top surface prisms are operable under dry and wet weather conditions, respectively. Both types of top surface prisms are configured to use refraction and reflection to redirect light from distant headlights into a downward direction onto the bottom surface of the traffic stripe under dry and wet weather conditions, respectively. Cube corner retroreflective prisms on the bottom surface accept the light and return it in the opposite direction.

Abstract: A system includes: a group of first light sources arranged around a central axis, the group being separated from the axis by a radial distance defining an aperture in the group; a plurality of second light sources; a detector array; and an optical system adapted to provide light from the second light sources through the aperture to a cornea of an eye, and to provide images of the first light sources and images of the second light sources from the cornea, through the aperture, to the detector array. The optical system includes a field flattener such that a shape of a surface of best focus on the detector array curves away from detector array in generally a same direction as the eye and a sclera of the eye.

Abstract: An illumination arrangement for a microscope includes an illumination input configured to inject an illumination beam bundle and an illumination output configured to output at least two partial beam bundles generated from the illumination beam bundle. At least one diffractive optical element is configured to split the illumination beam bundle into the at least two partial beam bundles that propagate along partial beam paths, and is configured to effect a relative change in respective propagation directions of the at least two partial beam bundles with respect to one another, such that the at least two partial beam bundles output by the illumination arrangement are non-collinear with respect to one another at the illumination output.