36 results about "Eyelid closure" patented technology

An alertness monitoring system uses reflectance measurement of infrared light pulses to monitor eye movement of a vehicle or machine operator. The data is used to measure eye and eyelid movement for presence slow or drifting eye movements, and / or eyelid closure and optionally one or more of, absence of saccadic movement, loss of eye co-ordination, wavering eyelids, partial eye closure, and drooping eyelids as indicators of loss of attention and drowsiness. The eye movements of a subject are analysed using reflected infra red light to obtain measures of the blink amplitude velocity ratio and the saccade amplitude velocity ratio. The readings are continuously compared with eye movement data indicative of degrees of alertness so that the monitor provides an indication of the operator's fitness to operate the vehicle or machine from the point of view of drowsiness no matter how it is caused.

A system or method for measuring human ocular performance can be implemented using an eye sensor, a head orientation sensor, and an electronic circuit. The device is configured for measuring vestibulo-ocular reflex, pupillometry, saccades, visual pursuit tracking, vergence, eyelid closure, dynamic visual acuity, retinal image stability, foveal fixation stability, focused position of the eyes or visual fixation of the eyes at any given moment and nystagmus. The eye sensor comprises a video camera that senses vertical movement and horizontal movement of at least one eye. The head orientation sensor senses pitch and yaw in the range of frequencies between 0.01 Hertz and 15 Hertz. The system is implemented as part of an impact reduction helmet that comprises an inner frame having interior pads configured to rest against a person's head and one or more shock absorption elements attached between the inner frame and the spherical shell that couple the spherical shell to the inner frame. The spherical shell has a circular geometry, that when viewed horizontally at its horizontal midplane, includes a center point that is the rotational center of the spherical shell. The one or more shock absorption elements are sized to provide greater spacing between the inner frame and the spherical shell at the sides and rear of the spherical shell than at the front of the spherical shell. The one or more shock absorption elements are sized to configure the alignment of the rotational center of the spherical shell with the proximate rotational center of the wearer's head.

A retracting eye drape assembly is disclosed for use around a patient's eye to seclude and seal off the operative field during eye surgery. The drape assembly includes a retraction member connected to the drape and configured to engage the patient's eyelid, an extension member connected to the retraction member or to the drape and configured to substantially enclose the patient's eyelid, and a retraction flap configured to secure the patient's eyelid in a substantially retracted position. A method of applying an eye drape assembly is disclosed. After application of the drape to the patient's face, and while the patient's eyelid is closed, the patient's eyelid is engaged by a retraction member connected to the drape and retracted. While retracted, the patient's eyelid is substantially enclosed to seclude the eyelid and eyelashes from the operational area. The secluded eyelid and eyelashes are then secured in a retracted position.

A respiratory anesthesia mask has an exposed face. The mask has an interior periphery in a continuous loop to fit a face of a patient. The mask having a centrally located exterior cylinder adapted to couple with a source of respiratory anesthesia gas. The mask has an intermediate section in a generally frusto-conical configuration between the interior periphery and the tube. Eyelid closure and protection equipment is received and supported on the face of the intermediate section of the mask. The closure and protection equipment includes two repositionable adhesive strips with interior and exterior surfaces. The closure and protection equipment includes temporary adhesive on the interior surface of the repositionable adhesive strip. In this manner, the repositionable adhesive strips are removably coupled to the face of the intermediate section of the mask.

An apparatus and method for determining drowsiness of a driver are provided. The apparatus includes an imaging device that obtains an image of the driver and a controller that determines (e.g., based on the image of the driver) when the driver is in a fatigue state, when the driver is in an eyelid closure state, and when the driver is in a wake-up state. The controller further determines that the driver is in a drowsiness state when after the fatigue state of the driver continues over a predetermined first time interval, the eyelid closure state and the wake-up state of the driver alternately and repetitively occur within a predetermined second time interval.

The invention relates to an anti-addiction television watching method which comprises the following steps: 1) providing a piece of anti-addiction television watching equipment, wherein the anti-addiction television watching equipment comprises a thermoinduction infrared sensor, an on / off state detector, a high-definition camera, an eyelid recognizer and a digital signal processor; the thermoinduction infrared sensor is used for detecting the existence of television audiences; the on / off state detector is used for calculating the operation time of a television; the high-definition camera is used for acquiring audience images of the television audiences; the eyelid recognizer is connected with the high-definition camera and is used for recognizing the eyelid closure situation of the audience images; the digital signal processor is connected with the thermoinduction infrared sensor, the on / off state detector and the eyelid recognizer respectively; when the thermoinduction infrared sensor confirms the existence of the television audiences, whether anti-addiction alarm information is transmitted or not is confirmed based on the operation time and the eyelid closure situation; 2) operating the equipment.

The invention discloses a blinking frequency and line-of-sight prediction method based on eye area generation network, which can be used for driver fatigue driving warning. The specific steps are as follows: Firstly, machine deep learning is used to extract the characteristic area of ​​the driver's eye captured by the camera, and the driver's eye is simulated by ellipse fitting on the feature area, and the blink frequency and The pupil position estimation method gives the blink frequency and the driver's gaze direction, which provides supporting data for the driver fatigue monitoring system and driver dynamic behavior analysis.