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1374results about How to "Protect eyesight" patented technology

Vision protection implementation method of electronic equipment with display screen

The invention relates to a vision protection implementation method of electronic equipment with a display screen. A front panel of the electronic equipment is provided with a front-facing camera and a distance sensor. The vision protection implementation method comprises the following steps of: detecting a working state of the display screen, `starting the front-facing camera on back stage when the display screen is activated and capturing human face images; identifying the human face images by using a human face identification technology and capturing a frontal human face; when the system judges that the frontal human face exists in the captured images, starting the distance sensor on back stage and measuring a distance between eyes of a user and the display screen; and comparing a measured distance with a preset reference distance, and judging whether to remind a user to adjust the distance between the eyes and the display screen. According to the vision protection implementation method, the purpose of protecting eyes of the user is achieved by monitoring the distance between the eyes of the user and the mobilephone screen by two external equipments, namely the front-facing camera and the distance sensor; and because the step of judging the frontal human face is added, the monitoring accuracy is improved and the trouble brought to the user due to wrong prompt information is avoided.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Intelligent display system automatically tracking head posture

The invention relates to an intelligent display system automatically tracking a head posture. The system can capture the head posture of a human body in real time, a display follows the head of the human body, the display and the head are constantly kept at optimum positions, eye fatigue can be relieved, and myopia can be prevented. The system comprises an image acquisition module, a vision algorithm processing module and a display control module. The image acquisition module is used for acquiring the image of the head of the human body in real time; the vision algorithm processing module is used for firstly preprocessing the image, constantly keeping the head at a vertical position in the image, secondly extracting feature points of a human face by the aid of an ASM (active shape model) algorithm, and finally acquiring the spatial posture of the head according to the triangular surveying principle of elevation angles and side-tipping angles. Head posture information is transmitted to a steering gear control module and then calculated by a single chip microcomputer to form a PWM (pulse width modulation) signal for controlling a steering gear, so that the display follows the head posture at two degrees of freedom of elevation and side-tipping.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Device exhibiting photo-induced dichroism for adaptive anti-glare vision protection

A device (100, 140, 150) for differentially absorbing light, depending on the state of linear polarization of the light, is disclosed. This polarizing effect is induced and controllable by the level of ambient light impinging on the device. The device (100, 140) may be used as an anti-glare vision protection device which selectively absorbs specularly reflected sunlight in brightly lit environments while permitting all light to pass in dimly lit environments. The device (100) includes a carrying medium which may be a film (142) or opposed substrates (112) that are sealed. A film or the opposed substrates carry a mixture (120) of fluid material (124) and photochromic dyestuffs (122), wherein the photochromic material is activated upon the detection of ultraviolet light so as to absorb some of the light and wherein the energization of the photochromic material effects the material so as to simultaneously selectively absorb the specularly reflected sunlight. The material (124) may be any fluid that dissolves the photochromic dyestuff material (122). The fluid is preferably a liquid crystal material such as nematic or chiral nematic. Alternatively, the material (124) may be a polymer liquid crystal. The device (150) may allow for electrical control of the absorptive properties.
Owner:ALPHAMICRON INC

Reminding method and electronic equipment

The embodiment of the invention provides a reminding method and electronic equipment, and relates to the technical field of multimedia. The reminding method and the electronic equipment can be used for reminding a user to prevent the user from being excessively close to a screen of the electronic equipment when the distance between the user and the screen of the electronic equipment is excessively short, so that the eyesight of the user is effectively protected. The method provided by the embodiment of the invention comprises the following steps: firstly, the electronic equipment firstly acquires the distance between the user and the screen, and then a corresponding reminding condition is acquired according to an equipment attribute of the electronic equipment or a reminding condition preset according to an attribute of the user is acquired; according to the reminding condition, whether the distance between the user and the screen meets the reminding condition or not is judged, and if the distance between the user and the screen meets the reminding condition, a prompting message that the distance between the user and the screen is excessively short is sent to the user. The reminding method and the electronic equipment which are provided by the embodiment of the invention are used for enabling the user to keep a suitable distance with the screen of the electronic equipment.
Owner:LE SHI ZHI ZIN ELECTRONIC TECHNOLOGY (TIANJIN) LTD

Novel table lamp with intelligent light regulating and eyesight protecting functions and control method for regulating illuminance of novel table lamp

The invention relates to the technical field of lighting of household table lamps, in particular to a novel table lamp with the intelligent light regulating and eyesight protecting functions and a control method for regulating illuminating of the novel table lamp. The novel table lamp comprises a base, a lamp body and a lamp part, the illuminating on a table top can be regulated intelligently, and standard visual illuminating needed for work and study is provided. Meanwhile, the novel lamp table has the automatic turn-on and turn-off function, and is turned off automatically after a user finishes working or studying, the trouble caused by regulating the illuminating of operating the table lamp manually is omitted, the situation that power waste is caused when people forget to turn off the lamp is avoided, and the service life of the table lamp is prolonged. In addition, the novel table lamp has the functions of correcting the sitting posture of the user and urging the user to sleep on time, the problems that the eyesight of the user is affected by an incorrect sitting posture and the eyes are used too much are solved, and the novel table lamp plays a good role in protecting the eyesight of juvenile students. The novel table lamp is reasonable in structure, complete in function, reliable in operation, convenient to use and high in practicability, achieves intelligent control, can meet needs of different users, and plays a remarkable role in protecting the eyesight of juvenile students.
Owner:姚智宏

Method for hydroponically culturing lettuce by means of LED light source

The invention discloses a method for hydroponically culturing lettuce by means of an LED light source. The method is characterized by comprising the following steps that 1, after lettuce seeds are germinated, seedling raising is conducted, and hydroponic culturing is conducted in a nutritional solution till seedlings growing out 3-4 true leaves are obtained; 2, transplanting and field planting are conducted on the seedlings; 3, after transplanting, light treatment is conducted on the seedlings, and the lettuce seedlings with the 3-4 true leaves are placed under an LED combining red light, blue light and green light to be cultured for 30 days to 33 days, wherein the wave length of the red light ranges from 655 nm to 660 nm, the wave length of the blue light ranges from 455 nm to 460 nm, the wave length of the green light ranges from 520 nm to 525 nm, the light intensity is 400 mumol.m<-2>.s<-1>, and the effective photosynthetic light quantum density percentage ratio of the red light to the blue light to the green light is 36:24:40. According to the method, a red-blue-green LED light control console is adopted, a specific proportion of green light is added in the red light and the blue light on the condition that the total light intensity keeps consistent, therefore, the lettuce which is high in yield, good in quality and high in beneficial mineral element content can be produced, and high-quality and efficient production of the hydroponically-cultured lettuce is achieved.
Owner:SOUTH CHINA AGRI UNIV

Full-automatic myopia prevention and humpback prevention intelligent table and chair

The invention discloses a full-automatic myopia prevention and humpback prevention intelligent table and chair. The full-automatic myopia prevention and humpback prevention intelligent table and chair comprises a chair base and a lower desktop support. The full-automatic myopia prevention and humpback prevention intelligent table and chair is characterized in that backrest supports are fixedly arranged on the two sides of the chair base, a plurality of chair surface adjustment holes and a plurality of backrest surface adjustment holes are formed in the backrest supports, a chair surface is matched with the middle portions of the backrest supports on the two sides of the chair base in a sliding mode, the chair surface is vertically positioned in the chair surface adjustment holes of the backrest supports through bolts, a backrest surface is matched with the upper portions of the backrest supports in a sliding mode, the backrest surface is vertically positioned in the backrest surface adjustment holes of the backrest supports through bolts, and a pillow backrest is arranged at the upper end of the backrest surface. The full-automatic myopia prevention and humpback prevention intelligent table and chair can effectively prevent and correct some bad habits of children in the learning process, and can effectively prevent myopia and humpback.
Owner:安徽堉帝智能科技有限公司
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