9 results about "Photopic vision" patented technology

Provided are a light emitting device capable of reducing glare, a headlight, and a vehicle including the same.The light emitting device comprises: a light emitting element having a light emission peak wavelength in a range of 400 nm or more and 490 nm or less; and a wavelength conversion member including a first fluorescent material having a light emission peak wavelength in a range of 480 nm or more and less than 580 nm and a second fluorescent material having a light emission peak wavelength in a range of 580 nm or more and 680 nm or less and having a composition different from that of the first fluorescent material, wherein the light emitting device emits light having a first luminance ratio Ls / L that is 0.9 or less, where Ls / L is a ratio of a first effective radiance Ls of the light emitted by the light emitting device in consideration of a spectral luminous efficiency curve for photopic vision of humans specified by the CIE (Commission Internationale de l'Eclairage) and S-cone spectral sensitivity of humans, to a luminance L of the light emitted by the light emitting device in consideration of the spectral luminous efficiency curve for photopic vision of humans.

The invention discloses a large-range collaborative navigation method for an extraterrestrial patroller, and relates to the field of computer vision, visual navigation and map splicing. The method comprises the following steps: performing significance analysis based on spectral residual for a right monocular camera, focusing on sight capture of a typical feature region, establishing a visual odometer model of inertial IMU pre-integration, and performing back-end optimization driven by a factor graph; establishing a plurality of extraterrestrial patroller similar region search models based on an improved bag-of-words model, introducing a similarity relative scoring function based on a norm form, setting a relative threshold value of a similarity suppression function, and obtaining an image overlapping region; according to the method, the calculation capability of an airborne computer is considered, a sparse feature point map and patroller pose splicing model is established, complete splicing of overlapped area maps is completed through splicing of small sparse feature point maps, and the splicing precision and the splicing efficiency are improved.

The invention belongs to the technical field of image information processing, and discloses a cross-domain few-sample remote sensing target classification method based on discriminant text prompt learning. Firstly, a support set and a query set are sent into an image encoder to obtain an encoded feature sum; through a semantic prompt generation module and a support set prototype feature guide prompt generator, a discriminative semantic prompt S adaptive to a few-sample task is generated, and a fixed template is replaced to accurately represent category attributes; then processing a discriminative semantic prompt S through a text encoder, performing intra-class contrast regularization, constructing a same-class multi-view prompt pair and a different-class negative sample pair, and adopting temperature modulation contrast loss to suppress instance noise and improve cross-domain robustness; and finally, bimodal decision hybrid prediction is provided, and the defect that domain invariance and detail discrimination under few samples cannot be considered in a conventional method is overcome through vision-text semantic similarity and vision-vision feature matching degree.

The application provides a car-machine start-up atmosphere linkage method, belongs to the technical field of automobiles, acquires environment data, the environment data includes time data, weather data and user preference data; constructs an environment atmosphere mapping rule according to the environment data; and realizes multi-dimensional atmosphere linkage according to the environment atmosphere mapping rule. According to the application, the start-up content is dynamically adjusted according to time and weather, multi-dimensional interaction of vision and hearing is formed, compared with single vision / visual level simple sound effects in the prior art, the user experience satisfaction can be significantly improved; the start-up atmosphere is adjusted in real time based on time and weather data, the environment matching degree is high, the problem that the prior art is "disconnected with the environment" is avoided, and the user can feel that the scene is fitted.

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.

A light emitting device comprises: a light emitting element having a light emission peak wavelength in a range of 400 nm or more and 490 nm or less; and a wavelength conversion member including a first fluorescent material having a light emission peak wavelength in a range of 480 nm or more and less than 580 nm and a second fluorescent material having a light emission peak wavelength in a range of 580 nm or more and 680 nm or less and having a composition different from that of the first fluorescent material. The light emitting device emits light having a first luminance ratio Ls / L of 0.9 or less, the first luminance ratio Ls / L being a ratio of a first effective radiance Ls of the light emitted by the light emitting device in consideration of a spectral luminous efficiency curve for photopic vision of humans specified by CIE and the S-cone spectral sensitivity of humans, to a luminance L of the light emitted by the light emitting device in consideration of the spectral luminous efficiency curve for photopic vision of humans. The first fluorescent material comprises a rare earth aluminate fluorescent material having a composition represented by formula (1A).

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.

This invention relates to an automated alignment method for robot calibration based on vision and PSD joint guidance, encompassing fields such as automated calibration of industrial robots and laser precision alignment technology. It addresses the shortcomings of existing four-PSD calibration methods, which rely on manual labor and are inefficient, as well as the limitations of existing vision-PSD hybrid servo technologies, which can only achieve single-point alignment, cannot support time-sharing projection of multiple PSDs from the same laser, and cannot construct dual-optical-path non-planar geometric constraints. The invention achieves this through steps including: pre-calibration of the calibration system and multi-coordinate system; two projections, using the first and second optical path measurement groups respectively to achieve joint alignment of vision and PSD; precise alignment with dual-optical-path non-planar spatial geometric constraints; and fully automated multi-station data acquisition and calibration parameter solving. This invention, through a vision-PSD-vision-PSD multi-round collaborative and time-sharing dual-optical-path non-planar constraint architecture, is adaptable to various industrial robot laser precision calibration scenarios.

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.