44results about How to "Less prone to visual fatigue" patented technology

The invention discloses visual training glasses which comprise a base, two lenses and a display screen, wherein the two lenses are installed on the base and can move left and right relative to the base to change the distance between the two lenses; the display screen is installed on the base and can move front and back relative to the base to change the distances between the display screen and the lenses; and the display screen is positioned behind the two lenses, and the eyes of a looker can look on the display screen through the two lenses. The front and back movement of the display screen synchronously corresponds to the left and right movement of the lenses, so that an image looking angle is reduced when an image distance is increased, and the image looking angle is increased when theimage distance is reduced, thus the eyes of the looker simultaneously make focusing movement of eye ciliary muscle and concentration adjusting movement of eyeball muscle. Because the eyes of the looker simultaneously make the focusing movement of the eye ciliary muscle and the concentration and separation adjusting movement of the eyeball muscle, the eye ciliary muscle and the eyeball muscle can be simultaneously exercised, thus the looker can look more natural and comfortable, and the invention is conductive to improve the eyesight of users.

The invention discloses a display which comprises a display device and a light source system. The display device comprises multiple pixels, and the transmittivity or reflectivity of each pixel can be adjusted; the light source system is used for projecting light onto the display device and designed to be capable of enabling emergent light of the pixels of the display device to point to a predetermined convergence point in the space. Accordingly, when the display is used, the position of the convergence point of illumination light can be adjusted according to the position of a human eye node, so that the convergence point can coincide with the human eye node; in this way, a user can receive image information on the display without deviation without needing human eye adjustment.

The invention relates to a preparation process for a diatom mud formaldehyde-removing indoor coating. The coating mainly comprises the following components in percentages by mass: 15-35% of diatomaceous earth, 0.2-1% of a dispersant, 0.1-2% of a surfactant, 15-25% of modified starch, 10-17% of a synthetic emulsion, 6-13% of nano-sized titanium dioxide, 5-12% of talc powder, 0-30% of a filler, 0.5-2% of a silver ion antibacterial agent, 1-5% of an auxiliary agent, 0.3-0.5% of a wetting agent, 0.2-0.5% of a defoaming agent, 10-15% of activated carbon, and the balance of water. In a word, the coating provided by the invention has the advantages of a wide range of raw material sources, low price, safety, environmental protection, and strong formaldehyde-adsorbing ability.

The invention belongs to the technical field of PVC plastic plates, and particularly relates to a high-strength environment-friendly PVC antibacterial plate and a preparation method thereof. The PVC antibacterial plate comprises the following raw materials: PVC resin powder, a plasticizing accelerator, a reinforcing agent, a filling agent, wood flour, an antibacterial agent, a stabilizer, a lubricant, a delustering agent and an ink absorbing agent. According to the high-strength environment-friendly PVC antibacterial plate, the compound reinforcing agent is added, so the obtained plate is highin hardness, high in strength and resistant to corrosion; a wood powder filler is added, so the density of the plate is reduced, and the plate is light in weight, good in rigidity and strong in woodtexture; the added stabilizer is green, environment-friendly and pollution-free; the specific delustering agent is added, so the surface of the manufactured plate is low in light reflection rate and soft in gloss, and such a matte effect can improve the comfort level of a light environment and allows people to not be prone to visual fatigue; and the plate surface has uniform and consistent gloss,and does not need secondary processing and painting, so cost is saved.

The invention relates to the field of demonstration tools, and particularly relates to an ornamental intelligent sand table, which includes a base. A fixed landscape module, a light module, a sound module and a control module are arranged on the base; the control module controls the light module to be lightened for display; the control module controls the sound module to play preset environment sound; the base is provided with a networking module, the networking module is wirelessly connected with the Internet to acquire weather information and send the weather information to the control module, the control module controls the sound module to play environment sound corresponding to weather according to the weather information, and the control module controls the lamplight brightness of thelight module to change according to the weather information. According to the invention, the sand table is enabled to carry out adaptive change of the micro-landscape according to actual weather information, the sand table does not always show an effect for a long time, visual fatigue is not easy to occur, and the display effect of the sand table is improved.

The invention discloses a rotating billboard control device, which relates to the technical field of billboard control equipment manufacturing and comprises a low-speed manual control circuit, a high-speed manual control circuit, a low-speed automatic control circuit, a high-speed automatic control circuit and a conversion circuit. The invention can solve the problem that the existing rotating billboards easily cause visual fatigue to people.

The invention discloses a rotation advertising board control circuit and relates to the technical field of advertising board control device manufacturing. The rotation advertising board control circuit comprises a low-speed manual control circuit, a high-speed manual control circuit, a low-speed automatic control circuit, a high-speed automatic control circuit and a switching circuit. The rotation advertising board control circuit can solve the problem that an existing rotation advertising board makes people feel visually-fatigue easily.

The invention relates to an interior decoration coating containing diatomite and having a formaldehyde removal function. The coating is mainly prepared from components in percentage by mass as follows: 15%-35% of diatomite, 0.2%-1% of a dispersant, 0.2%-0.5% of sodium alginate, 15%-25% of modified starch, 10%-17% of a synthetic emulsion, 6%-13% of nano titanium dioxide, 5%-12% of talc powder, 0-30% of filler, 0.5%-2% of a silver ion antibacterial agent, 1%-5% of an aid, 0.3%-0.5% of a wetting agent, 0.2%-0.5% of an antifoaming agent and the balance of water. In conclusion, the interior decoration coating has the advantages that the coating has wide raw material source, low cost, safety, environmental friendliness and high formaldehyde adsorption capacity.

The invention discloses a BD test pack. The BD test pack is concise in frame line construction, beneficial to recognition test and not prone to visual fatigue during a test. The BD test pack is provided with a pack sleeve. A BD test card is arranged in the pack sleeve. The BD test card is provided with a base substrate (2), color change frames (1) are attached to the base substrate (2), the color change frames (1) are a plurality of frames with similar figures, the smaller frame in the frames with the similar figures is sleeved with the corresponding larger frame in the frames with the similar figures, and the height of the smaller frame in the frames with the similar figures is smaller than that of the corresponding larger frame in the frames with the similar figures. The BD test pack is applicable to testing the forevacuum pressure steam sterilizer vacuum-pumping effect and the steam sterilizing penetration effect.