39results about How to "Prevention of myopia" patented technology

The invention discloses a method of using an infrared eyeball to track and control distance of eyes and a screen and a system thereof and relates to the eyeball tracking field. The method comprises the following steps of acquiring whether a user sight point is on a target screen based on an infrared eyeball tracking method; if the user sight point is on the target screen, based on the infrared eyeball tracking method, calculating and acquiring a distance of user eyes and the target screen, and determining whether to give a corresponding prompt according to the distance. In the invention, the infrared eyeball is used to track so that the distance between the user eyes and the target screen is controlled; and whether user eyes are fatigue is determined through combining a user blinking frequency so that an effect of preventing myopic eyes is well reached.

The invention discloses pumpkin flower eyesight-improving soymilk tea powder. The pumpkin flower eyesight-improving soymilk tea powder is prepared from the following raw materials in parts by weight: 10-20 parts of pumpkin flower petal powder, 50-60 parts of fresh milk, 25-35 parts of purple sweet potato soybean milk, 3-4 parts of purple sweet potato puffed bean dreg powder, 10-20 parts of traditional Chinese medicine extracting solution, 1-2 parts of fish liver oil, 4-6 parts of snow pear and 4-6 parts of coarse rice powder. The pumpkin flower eyesight-improving soymilk tea powder is mellow in taste, unique in formula and simple in preparation process, and the produced milk tea powder has strong milk bean flavour after being brewed with water or honey water and also has certain effects of removing heat from the liver and improving eyesight.

The invention relates to a pair of myopia preventing and controlling glasses integrating accommodative-convergence training and dynamic reading. The pair of glasses comprises mother lenses and assistant son lenses, and the mother lenses and the assistant son lenses in a glasses frame are connected via middle beams. The pair of glasses is characterized in that the assistant son lenses are two independent assistant son lenses which are respectively matched with vision degrees of left and right lenses of the mother lenses; a driving motor is installed on the middle beam of a mother lens frame; the driving motor drives the son lenses to rotate or overturn by taking the middle beam as the central point; and a control device supplies power to the driving motor and electrically controls the driving motor. According to the glasses provided by the invention, the glasses are used to improve the adjusting ability and sensitivity of ciliaris and alleviate visual fatigue, and meanwhile change near vision to looking in distance and convert static reading to dynamic reading so as to prevent, control and alleviate generation and development of myopia and avoid early occurrence of presbyopia. According to the pair of glasses disclosed by the invention, the defects that a pair of glasses in the prior art is just used to look nearly and is not used to look in distance in the using process, has a single reading function, cannot be used as a training tool for accommodative convergence, is just used for static reading and cannot be used for dynamic reading are overcome.

A simulative magic ball is a simulative batting device for training actions and skills of a plurality of competitive balls with simulative batting method for the first time. The simulative magic ball belongs to the field of family physical exercise or game toys. A plurality of ball exercises can be enjoyed in an ordinary home. The simulative batting method is easily mastered and the skills of the competitive balls are quickly improved. The simulative magic ball can strengthen the body, train strong basic skills, and provide great joys. Taking simulative table tennis as example, specific skills such as push and block, cut, lift, drive, sidespin, loop drive, and the like, can be practiced. The simulative magic ball can be used for training badminton, foot shuttlecock skills, etc. The device can be extended to play skill games, the batting difficulty and entertainment fun can be increased by a compound pendulum and a conical pendulum. In the simulative batting and games, physical knowledge is combined. Teenagers can deeply understand and research into the corresponding physical phenomena, get relieved from muscle and bone, prevent from short sight, and release pressure. The simulative magic ball has the advantages of physical training, physics learning and eyes exercise, and is applied to family sports and student exercise.

The invention discloses a multifunctional student desk, which comprises a horizontal desktop board and a vertical support rod supporting the desktop board. The lower part of the desktop board is provided with side panels on both sides, a rear panel at the rear, and storage at the front. cavity, the rear part of the desktop board is provided with a moving slide, the lower part of the moving slide board is provided with a lift storage box, the front lower part of the desktop board is provided with a vision protection frame, and the lower part of the support rod is connected with a support frame. The lower part of the lifting storage box is provided with a litter box. The beneficial effect is that: the lifting storage box can facilitate quick search for stored books or other articles. The vision protection frame helps to prevent the occurrence of myopia. The height of the desktop board is connected with the adjustment holes of the support rods of different heights through the positioning pin of the support frame, so as to realize the adjustment of the height of the desktop board. The waste box is set up to realize the temporary storage of waste. Can effectively keep the desktop tidy.

The invention belongs to the technical field of stationery commodities, and relates to a pencil-sharpening machine with an adjustable taper. A hand-cranking handle is cranked to drive an oscillating bar to oscillate; a translation sliding chute on the oscillating bar drives a translation assembly through a translation sliding pin to carry out translation in a reciprocating way along a linear guideway so as to drive five blades on a knife rest to sequentially sharpen a fixed pencil; and when the translation assembly moves toward an opposite direction until a journey is about to finish, a pawl tip is inserted into a tooth socket of a ratchet wheel and drives the ratchet wheel to anticlockwise rotate at a certain angel, and the hand-cranking handle is continuously cranked to alternatively sharpen and rotate the pencil. The pencil-sharpening machine with the adjustable taper provided by the invention is used for semi-automatically finishing pencil sharpening, the sharpening taper of the pencil can be conveniently adjusted, the sharpening surface size is uniform, the appearance is attractive, the pencil-sharpening machine is convenient to install and adjust, low in use cost, high in treatment efficiency, safe, clean and sanitary, nearsightedness is effectively avoided, and a lot of time of students is saved.

The invention discloses an optical lens for preventing myopia of students, relating to the field of optical technology. The optical lens comprises a lens body (1), an upper optical zone (2), a lower optical zone (3) and a triple prism (4), wherein the upper optical zone (2) and the lower optical zone (3) are arranged on the lens body (1), the lower optical zone (3) is arranged below the upper optical zone (2), and the triple prism (4) with an inward substrate is arranged at a small flat top above the left side of the lower optical zone (3). The optical lens has the beneficial effects that the structure design is reasonable and novel, eye axis increase can be effectively slowed down, myopia progress is controlled, paracentral defocus and form deprivation are alleviated, near distance seeing for a long time is comfortable, adjustment and focusing, caused by near seeing of the students, can be reduced, the optical lens is suitable for visual physiology of the students during near seeing, myopia occurrence and progress can be effectively prevented, the myopia diopter of adolescents and children can be gradually reduced by proper adjustment of a dioptric system, and therefore, the optical lens is an ideal product for preventing juvenile myopia.

An optical element has a transmission spectrum characterized in that a local maximum falls within a wavelength region longer than 315 nm but shorter than or equal to 400 nm, a local minimum falls within a wavelength region longer than or equal to 380 nm but shorter than or equal to 500 nm, and the wavelength at the local maximum is shorter than the wavelength at the local minimum.

The invention discloses a technical scheme and relates to radish leaf beverage. The radish leaf beverage is prepared from the following raw materials in parts by weight: 30-40 parts of radish leaf juice, 15-20 parts of concentrated fruit juice, 80-100 parts of water, 4-8 parts of cane sugar, 0.3-0.5 part of honey and a proper amount of citric acid, sodium cyclamate and D-sodium isoascorbate. The radish leaf beverage disclosed by the invention is rich in nutrition, delicious and particularly suitable for achieving the effects of relieving the summer heat, tonifying the spleen and stimulating the appetite. Furthermore, waste radish leaves are turned into treasures, so that the production cost is low, and the production technology is simple; products are convenient to carry and store; the preservation time is long; the radish leaf beverage is convenient to drink and has a high market prospect.

The invention discloses a preparation method of a soap for refreshing. The preparation method comprises the following steps: step 10, weighing the following raw materials: soap grains, borneol, mint, Schisandra chinensis, storax, aloe extract, pearl barley, essence and an active solution, step 20, grinding the soap grains, the borneol, the mint, the Schisandra chinensis, the storax and the pearl barley into fine powder, step 30, mixing sodium silicate, sodium aluminate, sodium carbonate, glucose, white sugar, silver nitrate, calcium carbonate and polyethylene glycol into the active solution, step 40, feeding the fine powder of the soap grains, the borneol, the mint, the Schisandra chinensis, the storax and the pearl barley into the active solution, feeding the aloe extract and the essence into the solution, stirring the solution while heating the solution till the temperature reaches 45 DEG C, then keeping the temperature, step 50, stirring the solution for 15 to 30min after the temperature reaches 45 DEG C, then discharging the material after stirring, and step 60, performing refining, grinding, vacuum strip discharge and printing molding processes on the mixed material, then obtaining a product. The method is more convenient, and can effectively reduce the production cost.

The invention discloses a device for preventing myopia including a desk clamp and an alarm device. The desk clamp is a U-shaped clamp. A clamp opening of the desk clamp can clamp a desk edge. The alarm device is arranged on an upper surface of the desk clamp. A power supply, an inductor, a processor, and an alarmer are arranged in the alarm device. The inductor induces whether an object blocks the upward side of a through hole through the through hole arranged in the upper end of the alarm device. If the object blocks the upward side of the through hole, a blocking signal is transmitted to the processer, and the processer analyzes the blocking signal transmitted from the inductor. If a blocking time reaches a critical point, an alarming signal is transmitted to the alarmer and the alarm is sounded. The device for preventing myopia has a simple and reasonable structure, can prompt a user to correct a sitting posture by triggering the alarm sound, thereby effectively preventing the myopia caused by the wrong sitting posture.

The invention discloses a glasses instrument capable of preventing nearsightedness. The glasses instrument comprises an object glass frame and an ocular glass frame having a location connection with the object glass frame. The object glass frame is provided with two object glass holes. The ocular glass frame is provided with two ocular glass holes. A distance between the two ocular glass holes matches with a distance between human eyes. A distance between the two object glass holes is shorter than the distance between the two ocular glass holes. A refraction device is arranged on a light path between the ocular glass frame and the object glass frame. The glasses instrument utilizes the refraction device used for reducing a pupil distance thereby preventing nearsightedness. Therefore, the glasses instrument is convenient for use, has a simple structure and a low cost, and can prevent nearsightedness well.

The invention relates to a multifunctional pen which comprises a pen tube and a pen core. The multifunctional pen is characterized in that an alarm clock and a calculator are arranged on the pen tube. By adopting the technical scheme, the invention has the advantages of reminding students of resting eyes so as to prevent the generation of nearsightedness and helping the students to carry the calculator by the way so as to prevent hurry-scurry condition when in use, and the like.