8 results about "Scotopic vision" patented technology

The invention provides a light-emitting device which is bright in both scotopic vision and photopic vision and reduces dazzling to people. The light-emitting device includes a light-emitting element having a dominant wavelength in the range of 430 nm to 500 nm, and a phosphor excited by light from the light-emitting element and having an emission peak wavelength in the range of 507 nm to 660 nm, and emits light having a dominant wavelength in the range of 490 nm to 500 nm. The S / P ratio, which is the ratio of the luminous flux in scotopic vision to the luminous flux in photopic vision, is 6.5 or less, and the luminous intensity at the luminous peak wavelength of the light-emitting element is higher than the luminous intensity at the luminous peak wavelength of the phosphor.

An illustrative display device preserves scotopic vision for a user. The display device includes a display configured to present image content, a memory storing instructions and operating parameters, and a processor coupled to the memory and configured to execute the instructions. The operating parameters may include a color parameter and an additional parameter, such that the execution of the instructions allows the processor to switch the display device between: 1) a normal operating mode in which the color parameter is set to cause the display to present the image content in full color and the additional parameter is set to a first setting, and 2) a scotopic preservation mode in which the color parameter is set to cause the display to present the image content in red color and the additional parameter is set to a second setting different from the first setting. Corresponding methods and devices are also disclosed.

An illustrative display device preserves scotopic vision for a user. The display device includes a display configured to present image content, a memory storing instructions and operating parameters, and a processor coupled to the memory and configured to execute the instructions. The operating parameters may include a color parameter and an additional parameter, such that the execution of the instructions allows the processor to switch the display device between: 1) a normal operating mode in which the color parameter is set to cause the display to present the image content in full color and the additional parameter is set to a first setting, and 2) a scotopic preservation mode in which the color parameter is set to cause the display to present the image content in red color and the additional parameter is set to a second setting different from the first setting. Corresponding methods and devices are also disclosed.

The invention discloses a full-light-control zinc oxide / perovskite heterojunction bionic visual device, a preparation method, a system and a method.The device comprises a ZnO microwire serving as a conducting channel, a perovskite shell layer, an indium particle electrode and a quartz substrate, and the ZnO microwire is fixed to the quartz substrate through the indium particle electrode; the middle part of the ZnO microwire is wrapped by the perovskite shell layer; the oxygen vacancy defect state in the ZnO microwire is modulated through ultraviolet light, reversible switching of positive and negative photoconductance responding to visible light is achieved, the human eye light pigment regeneration and bleaching process is simulated, and photopic vision and scotopic vision adaptation is achieved; under the modulation of strong ultraviolet light, the device shows a negative photoconductive effect and simulates a self-protection mechanism of eyelid closure. The device integrates visual adaptation and protection functions in a single structure, does not need an external grid voltage or a complex circuit, and provides a new idea for a new generation of bionic visual sensors.

The invention relates to an optometry system comprising a computer having one or more processors, the one or more processors are programmed to: a) control the optometry device to determine a photopic vision value of the vision correction power of the correction lens for each eye of the individual by implementing a photopic vision subjective refractive test in photopic vision, or to retrieve an initial vision correction value stored in a memory of the optometry system, or collecting initial vision correction values, b) a step of verifying the placement of the eye of the individual under light conditions ensuring scotopic vision of the eye of the individual for an amount of time, c) a step of verifying the placement of the eye of the individual under light conditions ensuring mesopic vision of the eye of the individual, and d) a step of controlling the optometry device to achieve a mesopic vision subjective refractive test, the meso-vision subjective refractive test comprises: blurring the eyes with a predetermined clouding spherical power, iteratively adding to the eyes a predetermined spherical power negative value identical to the clouding test value and determining the meso-vision binocular visual acuity of the eyes until a maximum value of the meso-vision binocular visual acuity is reached, and determining the meso-vision binocular visual acuity of the eyes until the maximum value of the meso-vision binocular visual acuity is reached. A mesopic raw value of vision correction power is determined for each eye, e) determining a mesopic value of vision correction power based on the mesopic raw value of vision correction power.

The invention discloses an AR glasses control method, system and device based on multi-mode perception fusion, and relates to the technical field of augmented reality display. The method comprises the steps of obtaining multi-modal perception data and environment illumination intensity, determining a darkness degree grade according to the environment illumination intensity, determining an initial display parameter by combining the multi-modal perception data and the darkness degree grade, obtaining a scotopic vision adaptation state and a visual fatigue degree of a user, and displaying the user according to the scotopic vision adaptation state and the visual fatigue degree. The method comprises the steps of obtaining initial display parameters, adjusting the initial display parameters to obtain target display parameters, obtaining the surrounding environment vibration intensity of target AR glasses and the head movement speed of a user wearing the target AR glasses, adjusting the target display parameters according to the vibration intensity and the head movement speed, and determining final display parameters. And adjusting the display parameter of the target AR glasses to the final display parameter. By implementing the technical scheme provided by the invention, the effect of improving the visual display adjustment effect is achieved.

The light emitting device includes a light emitting element having a dominant wavelength in a range of 430 nm or more and 500 nm or less, and a fluorescent material that is excited by light emitted from the light emitting element and has a light emission peak wavelength in a range of 507 nm or more and 660 nm or less, wherein the light emitting device emits light having a dominant wavelength in a range of 490 nm or more and 500 nm or less, wherein the light emitting device has an S / P ratio, which is the ratio of a luminous flux in photopic vision to a luminous flux in scotopic vision, being 6.5 or less, and wherein the light emitting device has a light emission intensity in the light emission peak wavelength of the light emitting element that is greater than that in the light emission peak wavelength of the fluorescent material.

Provided herein are optically transparent materials configured to block an appropriate amount of incident blue light, such that when the materials are positioned in the optical path between environmental light and the retina of a user, the optically transparent materials reduce the amount of blue light from the environmental light that reaches the retina of a user. The materials can block an effective amount of blue light to minimize damage to retinal tissue while permitting transmission of an effective amount of maintain acceptable photopic vision, scotopic vision, color vision, and circadian rhythms.