An apparatus for determining optical parameters of a user with spectacles arranged in the use position on the head of the user includes at least one projection device designed and arranged for marking a partial region of the head of the user and/or of the spectacles of the user with a light projection; at least one image recording device designed and arranged for generating image data at least from the marked partial region of the head of the user and/or of the spectacles of the user; and a data processing device with a user data determining device, which is designed to determine user data from the marked partial region of the head and/or of the spectacles on the basis of the generated image data, wherein the user data comprise spatial information in the three-dimensional space of points of the partial region of the head and/or of the spectacles, and a parameter determining device, which is designed to determine optical parameters of the user on the basis of the user data.

[Object] To provide display that is more favorable to a user.

[Solution] Provided is a display device including: a pixel array; and a microlens array provided on a display surface side of the pixel array and having lenses arranged at a pitch larger than a pixel pitch of the pixel array. The microlens array is arranged so that each lens of the microlens array generates a virtual image of display of the pixel array on a side opposite to a display surface of the pixel array, and light emitted from each lens of the microlens array is controlled so that pictures visually recognized through lenses of the microlens array become a continuous and integral display by controlling the light from each pixel of the pixel array.

A system for correcting human vision includes a mobile device in wireless communication with a vision correction device. The vision correction device includes lenses that are positioned to correct a user's vision. The mobile device generates adjustment information in response to receiving input information from a user. The mobile device wirelessly transmits the adjustment information to the vision correction device. The vision correction device adjusts a focal length of the lenses in response to receiving the adjustment information. The mobile device can be a smartphone or tablet computer. The input information from the user can be based on one or more of a user's finger interaction with a touchscreen and an image captured by the mobile device.

A method for determining optical power of an optical lens to be placed in front of an eye of a person, the method including: a first distance determining during which a first gazing distance is determined, which is the distance between the eye of the person and a first visual stimulus when the person gazes at the first visual stimulus in a given gazing direction with a first level of attention: a second distance determining during which a second gazing distance is determined, which is the distance between the eye of the person and a second visual stimulus when the person gazes at the second visual stimulus in the given gazing direction with a second level of attention different from the first level of attention; and an optical power determining during which the optical power adapted for the person is determined based on the first and second gazing distances.

A vision inspection and correction method, which mainly uses an image adjustment software/device to separate the eyes of the inspected person on an independent display screen, and the visual mark seen by the same vision is designed to be misaligned; through the guidance and interaction of the inspector and the inspected person, the inspector can adjust the image operation to zoom in/out/shift/focus/diverge/rotate, etc., so that the inspected person's binocular images can be clearly distinguished and adjusted. Then, the binocular images are aligned, and the inspector will implant the correction parameters during the image adjustment process into 3D projectors, VR (virtual reality), AR (augmented reality device), MR hybrid reality device and other equipment to adjust the binocular digital image parameters, thus the users can enjoy personalized adjustment and comfortable images of both eyes, or provide them to lens makers, based on this, create lenses that can make the inspected person's eyes see clearly aligned images.

Disclosed is a method for determining an optical system intended to equip a subject, the method including the steps of: —determining an index of sensitivity indicating, when the subject is placed in an environment including surfaces and/or borders forming globally a geometry of this environment; and landmarks associated with specific locations within the environment, how the subject relies on the global geometry and/or on the local landmarks of the environment to navigate within the environment; and—determining the optical system based on this index of sensitivity. The invention also relates to an ophthalmic lens and to an ophthalmic filter determined by such method.

A measuring method for measuring sensitivity of eye around certain line of sight includes: showing image of predetermined pattern on a display screen showing in front of eyeball of subject by display device secured to head; showing fixation target focused on by subject, on display screen to make line of sight of subject; showing change region where predetermined pattern image is changed, at anisotropic area around intersection point or fixation target in screen is separated from intersection point and fixation target, intersection point wherein subject certain line of sight focuses on fixation target, crosses display screen; showing change region where predetermined image pattern is changed on display screen, wherein change region manner is continuously or intermittently brought close to or away from intersection point or fixation target in display screen; and determining range wherein subject senses change region by bringing it close or away from intersection point or fixation target.

Configuring ophthalmic lenses that reduce oblique aberrations based on a wearer's accommodative demand values is disclosed. The accommodative demand values include A_(rel−) and A_(rel+) depend on object vergence L. The accommodative demand values are considered to and ensure no or reduced eye strain to the wearer. An improved merit function Φ′ is calculated based on the accommodative demand values. In the calculation, accommodative term A is a smooth and continuous function of both the object distance L and the spherical component of the power error. This ensures the accommodative demand values are well below maximum relative accommodations available to the wearer to prevent eye fatigue. The calculation may also include a smooth and continuous thresholding function ƒ that optimizes the merit function. The calculation may also include evaluation of the power error associated with various object vergencies for every direction of sight.

Disclosed is a computer-implemented method for assessing suitability between an optical device and its user, the optical device including an optical lens placed in front of an eye of the user when the user uses the optical device, the optical lens having a plurality of optical zones having different optical functions, the method including at least the following steps: a requesting step, during which the user, equipped with the optical device, is requested to use the optical device in a plurality of different visual situations, each visual situation being associated with an optical zone of the optical lens and during which the user looks at a visual target located in the user's natural environment through the optical lens; and a suitability index assessing step, during which the user assesses a suitability index based on his use of the optical device in the plurality of different visual situations.

A system and method for determining an adapted ophthalmic device for a wearer, the method including acquiring a set of parameters values relating to the wearer, determining at least a task to be performed by the wearer involving visual exploration, using a computing system, determining a value of a criterion assessing an efficiency of the wearer's visual exploration strategy for the task, and determining an optical design of an ophthalmic device to be worn by a wearer according to the determined value of the criterion.