Field of the invention

The present invention relates to anti-radiation, anti-glare and antistatic composition for all visual display terminals and electronic gadgets, more particularly a radiation, static and glare filter for articles such as computer monitors, television screens, mobile phones, optical filters, picture frames, windows, mirrors solar collector cover plates, optical lenses, and windshields for vehicles.

Background information

Generally, when a worker is engaged in a visual work involving prolonged use of the eyes, he or she tends to suffer asthenopia.

Causes of asthenopia are classified into five categories: accommodative, myopathic, syndromic, aniseikonic, and neurogenic. However, a visual display terminal (VDT), such as a personal computer or TV has become a cause of asthenopia which does not definitively belong to any of these five categories.

Visual work with a VDT is said to involve visual dysfunction, such as fatigue of the eyes, visual disorder, dimming of vision, or eye pain; or ophthalmic anomaly, such as asthenopia, myopia, keratoconjunctivitis, increased tension of the eye, or lacrimal disorder. These symptoms are generically called VDT ophthalmopathy.

In order to prevent VDT ophthalmopathy, there has been devised a framed or film-type filter to be attached or affixed to a display screen of a desktop personal computer or to that of a TV. Such a filter shuts off a certain percentage of visible light emitted from a display and prevents reflection of external light in the display screen, to thereby improve contrast of a displayed image. When a display is of a cathode-ray-tube type, the filter removes radiation and ultraviolet rays emitted from the display.

However, such a filter for use with a display of visual display terminals (VDTs) has not been devised. The use of many electronic devices and looking at the display screen reflection of an external-light source in the screen affects the eyes of, particularly, a preschooler or an elementary school student, who is in an important stage of physical development. Such an adverse effect on the eyes of children may cause an irreparable affection of their eyes, This is considered to be a kind of disease resulting from civilization, and has become a worldwide issue in relation to health of eyes.

Therefore it is an object of the present invention to provide a anti-radiation, antiglare and antistatic composition for all visual display terminals and electronic gadgets, more particularly a radiation and glare filter for articles such as computer monitors, television screens, mobile phones, optical filters, picture frames, windows, mirrors solar collector cover plates, optical lenses, and windshields for vehicles.

It is another object of the invention is to provide a composition for high level of anti-scintillation properties, high image sharpness, high light transmittance and high antiglare properties derived from light diffusing properties.

Another object of the present invention to provide a composition to be dispersed therein glass composition, transparent resin composition and the like.

Summary

Accordingly, a novel synergistic composition for reducing/blocking radiation and antiglare emission from visual display terminals, mobile phones, optical filters, picture frames, windows, mirrors solar collector cover plates, optical lenses, and windshields for vehicles.

Another embodiment of the present invention to provide a synergistic composition consisting essentially of about 0.025 to 1.0 weight percent total iron oxide, about 0.025 to 0.4 weight percent manganese oxide, and cobalt oxide in an amount effective to produce a cobalt concentration of about 0.003 to 0.02 weight percent, magnesium oxide about 0 to 5 weigrrt percentage, silicon oxide about 50 to 80 weight percentage, sodium oxide about 10 to 20 weight percentage, calcium oxide about 5 to 15 weight percentage, aluminium oxide about 0 to 5 weight percentage, potassium oxide about 0 3 to 1.0 and chromium oxide about 10 to 90 ppm.

Still another embodiment of the present invention to provide a composition comprising cobalt 0.003 to 0.02%,

Further embodiment of the present invention to provide a synergistic composition comprising manganese oxide to reduce amber color attributed to reaction of iron oxide with sulfate refining agents.

Another embodiment of the present invention to provide a synergistic composition that can be used to block radiation, glare and static electricity in the glass, polymers, resins or any other materials suitable thereof.

Still another embodiment of the present invention to provide a method for preparing radiation and glare blocking synergistic composition comprising, adding iron oxide, manganese oxide, cobalt oxide, chromium oxide and manganese oxide during molten glass formation to a lime-soda-silica base glass composition, the materials are sufficient to form light blue glass composition having at a 2 to 8mm thickness, 465 to 495 nm dominant wavelength of excitation.

Still another embodiment of the present invention to provide a method for preparing radiation and glare blocking synergistic composition that can be used in a polymer, polymer-glass, resin, resin-glass, fiber, fiber-glass and so on to prepare a versatile product to block radiation and glare.

Another embodiment of the present invention to provide an filter system which made from the composition of the present invention is disposed on the front of a display having high level of anti-scintillation properties; high image sharpness; high light transmittance ; and high antiglare properties derived from light diffusing properties or external surface of the display panel (shell).

Detailed description

The following description hereinafter describes the nature of the invention and the manner in which it is to be performed.

Accordingly, a novel synergistic composition for reducing/blocking radiation and antiglare emit from visual display terminals, mobile phones, optical filters, picture frames, windows, mirrors solar collector cover plates, optical lenses, and windshields for vehicles is disclosed.

The present invention provides a synergistic composition comprising essentially of about 0.025 to 1.0 weight percent total iron oxide, about 0.025 to 0,4 weight percent manganese oxide, and cobalt oxide in an amount effective to produce a cobalt concentration of about 0.003 to 0.02 weight percent, manganese oxide as MnO about 0.05 to 2,5 weight percentage, silicon oxide about 50 to 80 weight percentage, sodium oxide about 10 to 20 weight percentage, calcium oxide about 5 to 15 weight percentage, aluminum oxide about 0 to 5 weight percentage, potassium oxide about 0.3 to 1.0 and chromium oxide about 10 to 90 ppm.

It is found that the manganese oxide present in the composition reduces amber color attributed to reaction of iron oxide with sulfate refining agents.

The synergistic composition of the present invention can be used to block radiation, glare and static electricity in the glass, polymers, resins or any other materials suitable thereof.
A method for preparing radiation and glare blocking synergistic composition comprising; adding iron oxide, manganese oxide, cobaft oxide, chromium oxide and manganese oxide during molten glass formation to a lime-soda-silica base glass composition, the materials are sufficient to form blue glass composition having at a 2 to 4mm thickness, 465 to 495 nm dominant wavelength of excitation. The components of the composition added during the molten glass formation altogether or one by one or any other suitable method to form a glass. The components of the composition are uniformly impregnated in the glass to block the radiation or glare uniformly.

A method for preparing radiation and glare blocking synergistic composition comprising; adding iron oxide, manganese oxide, cobalt oxide, chromium oxide and magnesium oxide during molten condition of a polymer or resin to prepare a product to block radiation and glare products.

Another embodiment of the present invention to provide an filter system which made from the composition of the present invention is disposed on the front of a display having high level of anti-scintillation properties; high image sharpness; high light transmittance; and high antiglare properties derived from light diffusing properties.

Accordingly the present invention provides a synergistic composition to block the radiation and glare. There is no other composition exists which can give protection against radiation, glare and static electricity leakage.

The antiradiation property of the glass manufactured from the composition of the present invention exists for lifetime and cannot be reduced or eliminated; the industry and society badly need this composition.

The glass manufactured from the composition of the present invention improves the visibility of the image and text

The resins are selected from an acrylate resin, a cellulosic resin, an epoxy resin, a urea melamine resin, a urethane resin or combination thereof. Among them, resins belonging to the category of ionizing radiation-curable resins are mainly acrylate oligomers or prepolymers, or monofunctional or polyfunctional monomers. Oligomers or prepolymers include relatively low-molecular weight polyester resin, polyether resin, acrylic resin, epoxy resin, urethane resin, alkyd resin, spiroacetal resin, polybutadiene resin, and polythiol-polyene resin and acrylate or methacrylate (acrylate and methacrylate being hereinafter collectively referred to as "(meth)acrylate") of polyhydric alcohols or the like.

These ionizing radiation-curable resins may contain the following monofunctional monomers or polyfunctional monomers as a reactive diluent. Monofunctional monomers include ethyl(meth)acrylate, ethylhexyl(meth)acrylate, styrene, methylstyrene, and N-pyrrolidone, and polyfunctional monomers include trimethylolpropane tri(meth)acry(ate, hexanedioKmethJacrylate, tripropylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, pentaerythritol tri(meth)acrylate, dipentaerythritol hexa(meth)acrylate, 1,6-hexanediol di(meth)acrylate, and neopentyl glycol di(meth)acrylate. These monofunctional monomers or polyfunctional monomers may be cured as such by crosslinking without the oligomer or the prepolymer, or alternatively may be used as a mixture thereof with a thermoplastic resin or a thermosetting resin.

Thermosetting resins usable as the light-transparent resin include phenolic resins, urea resins, diallyl phthalate resins, melamine resins, guanamtne resins, unsaturated polyester resins, polyurethane resins, epoxy resins, aminoalkyd resins, urea-melamine resins, and silicone resins.

Transparent resin is a resin wherein hydroxyl groups of cellulose have been partially or entirely esterified mainly with a lower fatty acid. Specific examples of such resins include acetylcellulo&e and cellulose acetate butyrate, typically cellulose triacetate. Further, verloue polyaiters (typically polyethylene terephthalata*PET), aoryl (typically polymtthyl methacrylate), polyurethane, polycarbonate, polymethylpentene, (meth)acrylonitrille, polyurethane, polyoarbonate, polymethylpontene and the lide may alsobe used.

According to the present Invention wherein the light-transparent resin Impregnated with the composition of the present invention, an antiglare antlradiation property or material possesses excellent antiradiation, antiglare, a high level of anti-scintillation properties, a high level of sharpness of transmitted images, and high light transmittance while enjoying a high level of external light reflection preventive properties.

Further, according to the present invention, sharp images can be provided on a display using this antiglare film, and the visibility of images is satisfactory even under an environment exposed to external light or under illumination.

Though the present invention was shown and described with references to the preferred embodiments, such are merely illustrative of the present invention and are not to be construed as a limitation thereof and various modifications of the present invention will be apparent to those skilled in the art. It is therefore not intended that the present invention be limited to the disclosed embodiments or details thereof, and the present invention includes all variations and/or alternative embodiments within the spirit and scope of the present invention as defined by the appended claims.

I claim:

1. A novel composition of an optical device having properties of blocking harmful rays of spectrum in electronic devices comprising essentially of about 0.025 to 1.0 weight percentage of total iron oxide, about 0.025 to 0.4 weight percentage of manganese oxide, and cobalt oxide in an amount effective to produce a cobalt concentration of about 0.003 to 0.02 weight percentage, manganese oxide as MnO about 0.05 to 2.5 weight percentage, silicon oxide about 50 to 80 weight percentage, sodium oxide about 10 to 20 weight percentage, calcium oxide about 5 to 15 weight percentage, aluminium oxide about 0.0 to 5 weight percentage, potassium oxide about 0.3 weight percentage and chromium oxide about 10 to 90 ppm are added during the molted condition of a polymer or resin to prepare a product to block radiation and glare.

2. The composition as claimed in claim 1, wherein iron oxide, about 0.025 to 0.4 weight percentage of manganese oxide, and cobalt oxide in an amount effective to produce a cobalt concentration of about 0.003 to 0.02 weight percentage, manganese oxide chromium oxidelO to 90 ppm are added during the molted condition of a polymer or resin to prepare a product to block radiation and glare.

3. The composition as claimed in claim 1, wherein the product is a film or glass.

4. A novel composition of an optical device having properties of blocking harmful rays of spectrum in electronic devices is substantially herein described and exemplified.