2222 results about "Ophthalmology" patented technology

A surgically implanted ocular optical array that can be used in both therapeutic and diagnostic applications is described. A device configured to be implanted in an eye includes: an imaging system that receives visible light incoming to the eye; optical source generating circuitry that generates an optical signal based on the light received by the imaging system; and an optical phased array (OPA) that generates and projects an image onto a retina of the eye in which the device is implanted, the image being based on the optical signal generated by the optical source generating circuitry.

Eyewear for control of myopia progression communicates with a compliance monitoring system in accordance with a myopia progression retarding protocol. The compliance monitoring system includes a base station or a smart device. The base station or smart device includes a base wireless transceiver for receiving a beneficiary's usage data from the eyewear or a storage case configured to store the eyewear. The monitoring system processes the usage data from the eyewear or the storage case to compute a compliance score that is provided to a stakeholder of the myopia progression retarding protocol.

This disclosure discloses an optical imaging lens system comprising seven lenses. The seven lenses, arranged sequentially from the object side to the image side along the optical path, are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. Each of the seven lenses has an object-side surface facing the object side and an image-side surface facing the image side. The object-side surface of the third lens is concave near the optical axis. The image-side surface of the sixth lens is convex near the optical axis. The image-side surface of the seventh lens has at least one inflection point. The optical imaging lens system also includes an aperture, which is positioned between the fourth and fifth lenses. Under certain conditions, the optical imaging lens system can simultaneously meet the requirements of wide viewing angle, miniaturization, large aperture, and high image quality. This disclosure also discloses an image-capturing device having the above-described optical imaging lens system and an electronic device having the image-capturing device.

The application provides a continuous zoom optical system and a stereomicroscope for the stereomicroscope, and the optical lens unit comprises, in sequence along a main optical axis, an upper fixed lens group, a compensation lens group, a middle fixed lens group, a zoom lens group and a lower fixed lens group; a variable diaphragm is arranged between the middle fixed lens group and the zoom lens group along the main optical axis; the upper fixed lens group, the compensation lens group, the zoom lens group and the lower fixed lens group are all configured as double lens combinations, the focal length values of the upper fixed lens group and the zoom lens group are negative, and the focal length values of the compensation lens group and the lower fixed lens group are positive; the middle fixed lens group is configured as a double-concave single lens; the compensation lens group and the zoom lens group are axially moved along the main optical axis based on a first zoom fitting curve and a second zoom fitting curve respectively; and the advantages are that the system has smooth magnification, suppresses vignetting phenomenon, and dynamically adjusts the numerical aperture, the depth of field and the light throughput to adapt to different scene requirements.

Methods and systems are described for improved delivery of foveated rendering streams for media content delivery. Received video data is separated into a high acuity (HA) stream and a low acuity (LA) stream. The HA stream is marked to indicate HA transmission. A communication device that retransmits the HA stream based on the marking transmits the HA stream at a lower latency and a higher reliability than the LA stream. A receiving device receives the HA stream and the LA stream. A display device generates for display a combined stream including the HA stream and the LA stream. Artificial intelligence systems, including neural networks, are trained for improving the foveated rendering. Models are developed for the foveated rendering. Related apparatuses, devices, techniques, and articles are also described.

Surgical systems and methods involve an illumination assembly including a light module operable to generate and direct a visible light and a plurality of actuators to move the light module. Controller(s) coupled to the illumination assembly detect a condition related to a surgical object that is remote from the illumination assembly. The controller(s) control the actuators of the illumination assembly to move the light module to remotely direct the visible light at the surgical object such that the visible light is reflected by the surgical object to visibly communicate the detected condition.

1. Name of the product in this design: Eye mask. 2. Purpose of this design: For use as an eye mask, worn on the eyes for protection or shielding. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The present invention provides a head-up display illumination control device that ensures optimal visibility at all times, even when the occupant is wearing sunglasses. [Solution] The present invention controls a head-up display mounted on a means of transport that displays information to the occupant, and comprises a detection means for detecting whether or not the occupant is wearing sunglasses, and a control means for controlling the illuminance of the head-up display based on the detection result, wherein the control means is configured to set the illuminance higher when sunglasses are worn than when they are not.

The application belongs to the technical field of eyepiece manufacturing, and discloses a flat-field eyepiece optical system, which is characterized in that: an eyepiece first lens, an eyepiece second lens, an eyepiece third lens, an eyepiece fourth lens, an eyepiece fifth lens, an eyepiece sixth lens, an eyepiece seventh lens, an eyepiece eighth lens and an eyepiece ninth lens are sequentially arranged along the optical axis direction from the object side to the image side, the focal length is 30 mm, the field of view is 70°, and the maximum distortion is -15.1761%.

This invention provides a subjective optometry information processing program and a subjective optometry system that allow users to appropriately understand the usage status of subjective optometry devices. [Solution] A subjective eye examination information processing program is executed by an information processing device that processes information related to a subjective eye examination device, wherein the subjective eye examination information processing program is executed by the control unit of the information processing device, causing the information processing device to execute: an eye examination information acquisition step of acquiring eye examination information indicating at least one of the content of the eye examination and the time of the eye examination by the subjective eye examination device; a status information generation step of generating status information indicating the usage status of the subjective eye examination device by processing the acquired eye examination information; and an output step of outputting the status information.

The disclosure relates to formulations and methods for the in vitro testing of ocular irritants. It was discovered that adding an antioxidant formulation to in vitro ocular irritation tests, including for example, a biochemical ocular irritation test, a reconstituted human corneal epithelium (RhCE) ocular irritation test and an excised eye depth of injury (Dol) test, substantially reduces the rate of false positives without diminishing test sensitivity, resulting in more accurately predicting ocular irritancy of test substances. More particularly, the disclosed method employs relatively high physiologic concentrations of one or more antioxidants that are normally present in tears. In a variation, much higher concentrations of one or more antioxidants may provide protection against in vivo exposure to ocular irritants.

A bifocal endoscope objective and endoscope, relating to the field of optical technology, includes a first lens with negative optical power, a second lens with positive optical power, a third lens with positive optical power and movable along the optical axis from the object side to the image side, a fourth lens with positive optical power, a fifth lens with negative optical power, and a sixth lens with negative optical power, arranged sequentially along the optical axis from the object side to the image side. The objective has a total optical length ≤ 6.8 mm and a full field of view ≥ 160°. The third lens is configured to change the air gap between the third lens and the second and fourth lenses by moving it along the optical axis to a first axial position or a second axial position, respectively corresponding to a long-distance observation mode and a short-distance observation mode, while maintaining a constant total optical length during the switching process. This objective achieves stable bifocal switching with a constant total optical length during the switching process in an extremely compact structure.

An optical imaging lens and an imaging device having the same are disclosed. The optical imaging lens includes a plurality of optical lenses arranged from the object side to the image side. Among the optical lenses, the optical lens with the largest focal length is a metasurface lens, and some or all of the other optical lenses are aspherical lenses. The optical imaging lens of this invention, by combining metasurface lenses and aspherical lenses, can at least reduce the overall length of the optical system or increase the imaging area, and can also simplify the manufacturing process and reduce manufacturing costs.

Methods and apparatuses disclosed herein use an outward-facing display of an eye-worn device (10) to provide indications (42) to an observer device (120) having line-of-sight to the eye-worn device (10). Example indications (42) include solid colors or patterns, which may or may not use color, serving as authentication symbols. In one or more embodiments, the eye-worn device (10) displays or updates an indication (42) on a responsive basis, as part of authentication procedure. Various display types may be used, with one or more embodiments relying on the use of microelectromechanical system (MEMS) mirrors, and the indications (42) may be provided using visible light or light in other wavelengths.

1. Name of the designed product: zoom lens (2). 2. Use of the designed product: mounted on a spectacle frame or similar device, used for magnifying the operating site during oral or medical operation. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

A photographing lens assembly includes five lens elements which are, in order from an object side to an image side along an optical path, a first lens element, a second lens element, a third lens element, a fourth lens element and a fifth lens element. Each of the five lens elements has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The first lens element has positive refractive power. The third lens element has negative refractive power, the object-side surface of the third lens element is convex in a paraxial region thereof, and the image-side surface of the third lens element is concave in a paraxial region thereof. At least one of the object-side surface and the image-side surface of at least one lens element of the photographing lens assembly is aspheric.

Sterile packaging for an intraocular lens (IOL) delivery system includes a sealed container with an IOL delivery system contained therein, with a cap sealing the container. One or more tamper-evident solutions are provided on the packaging to ensure an indication of non-sterility. This configuration solves certain issues with prior packaging, such as clumsy transfers and bulky packaging which creates storage issues and mitigates sterility barrier risk associated with pouch or blister packaging or other non-rigid package types.

An optical lens assembly (1), comprising a first lens element (11), the first lens element (11) comprising a first structural portion (110) and a first optical portion (111), and the first structural portion (110) extending outwardly from the first optical portion (111); and further comprising a second lens component (20), the second lens component (20) comprising a second lens element (21) and a second lens barrel (22), wherein the second lens element (21) is mounted in the second lens barrel (22), the second lens element (21) is bonded to the second lens barrel (22) by means of adhesive provided on an outer side of the second lens element (21), and the first lens element (11) is mounted on the second lens component (20) by means of the first structural portion (110), so that when a clamping mechanism clamps the first lens element (11) for active alignment, the adjusting action is more accurate, and the efficiency of active alignment assembly is higher.

This invention relates to the field of medical data mining technology, specifically to a system for assessing eye muscle fatigue in myasthenia gravis based on infrared thermal imaging. First, the degree of blood circulation impairment is determined based on the temperature changes of pixels in various directions within a speckled region. Then, based on the number of speckled regions and the concentration of hot spots, a speckled region influence value reflecting local blood circulation and metabolic abnormalities is determined. Next, combining the degree of blood circulation impairment, the speckled region influence value, and the speckled region distribution, a comprehensive reference degree of eye muscle fatigue is determined. Furthermore, considering the distribution of speckled regions under the influence of grease, the degree of blood circulation impairment, and the characteristic that the reference degree of eye muscle fatigue typically does not change, a corresponding grease influence value is determined. Thus, combining the reference degree of eye muscle fatigue and the grease influence value allows for a more accurate determination of the eye muscle fatigue assessment value, resulting in better assessment of eye muscle fatigue in myasthenia gravis based on this value.

This application provides a skin color detection method and apparatus for use in a laser hair removal device. The laser hair removal device includes a control board and a treatment head. The treatment head contains a contact sensor and a skin color detection component. The light outlet of the treatment head has a skin color detection window and a contact detection part arranged circumferentially. The light outlet, skin color detection window, and contact detection part of the treatment head are arranged on a common end face. The method includes: the control board acquiring a contact signal collected by the contact sensor through the contact detection part, and determining whether the light outlet of the treatment head is in contact with the skin based on the contact signal; after determining that the light outlet of the treatment head is in contact with the skin, the control board controls the skin color detection component to collect the skin color signal through the skin color detection window, and determines the skin color type based on the skin color signal. The technical solution of this application provides high accuracy in determining the skin color type, and the control parameters determined according to the user's skin color also match the user's skin color, resulting in stable hair removal effect without skin damage.

3D eye beads for drop shot hooks are characterized by the fact that they: a: has a recess (5) to receive the drop shot hook, with the hook eye and the through-hole aligned with each other, b: has a cord guide groove (3) on the outer diameter which is rounded with the through-hole. c: has a through hole (6).