摘要:
A tooth bleaching material that is safe and has good operability and high bleaching effect and a tooth bleaching method using the tooth bleaching material are provided by bleaching and removing colored sediments (colored or discolored deposits) on a tooth with a tooth bleaching material containing hydrogen peroxide and/or a compound generating hydrogen peroxide in an aqueous solution, and a dicarboxylic anhydride, and also containing a basic compound and a thickening agent, and a tooth bleaching method containing attaching the tooth bleaching material to a surface of a discolored tooth after dilution or without dilution irradiating with light.
摘要:
The present invention relates to a tooth bleaching material containing peroxyglutaric acid and/or peroxypolyacrylic acid as a bleaching ingredient, as well as a method of bleaching teeth which includes the step of applying the tooth bleaching material in the form of a dilute solution or without dilution onto surfaces of discolored teeth. In accordance with the present invention, there is provided a tooth bleaching material for bleaching and removing colored sediments (colored or discolored deposits) on teeth which does not essentially require irradiation with light, and is readily used with a high safety and further suitable as a domestic bleaching material, as well as a tooth bleaching method using the above tooth bleaching material.
摘要:
The present invention relates to a tooth bleaching material containing peroxyglutaric acid and/or peroxypolyacrylic acid as a bleaching ingredient, as well as a method of bleaching teeth which include the step of applying the tooth bleaching material in the form of a dilute solution or without dilution onto surfaces of discolored teeth. In accordance with the present invention, there are provided a tooth bleaching material for bleaching and removing colored sediments (colored or discolored deposits) on teeth which do not essentially require irradiation with light, and is readily used with a high safety and further suitable as a domestic bleaching material, as well as a tooth bleaching method using the above tooth bleaching material.
摘要:
A flexible polymer optical waveguide device which is excellent in mechanical strength and durability against environments, particularly excellent in heat and chemical resistance, with maintaining characteristics of an optical waveguide and which can be easily produced, and a process for the production thereof, the flexible optical waveguide device having a structure in which a cured resin layer is formed on at least one surface of an optical waveguide film obtained by forming a refractive index distribution in a light-permeable polymer film, the cured resin layer(s) comprising a polyamide resin and at least one of an epoxy resin and a phenolic resin as main components.
摘要:
An optical waveguide module having a main-line waveguide, which is excellent in optical branching properties, important properties of a bus communication network, and the reproducibility of the above branching properties and is easy to produce, and an optical transmission equipment having the above optical waveguide module. The optical waveguide module having a main-line waveguide which is connected to the optical transmission path and works as part of the optical transmission path and a pair of branch waveguides (21,22) which are unidirectionally branched from the main-line waveguide, the main-line waveguide and the branch waveguides being formed by providing an optically transparent polymer film with a refractive index distribution, a light-receiving device (25) being connected to one (21) of a pair of the branch waveguides, a light-emitting device (26) being connected to the other (22).
摘要:
It is intended to provide an organic peracid polymer composition which is stable, odorless and has sufficient water solubility and is suitably used as a bactericide, a bleaching agent and a cleaning agent. By mixing and dissolving an organic acid polymer, hydrogen peroxide and an inorganic acid and maintaining the mixture for a period ranging from 1 hour to 1 month at a temperature ranging from 10 to 80° C., the organic peracid polymer-containing composition containing an organic peracid polymer (2 to 50% by weight) and, in some cases, the hydrogen peroxide (2 to 50% by weight) and the inorganic acid (0.1 to 10% by weight) is obtained.
摘要:
A reflective type optical signal distributor comprising, in a housing (2), a plurality of optical input/output units (3) functioning as input and output terminals for an optical signal, an optical circuit assembly (6) for reflecting and separating the optical signal, and a plurality of guide optical fibers (8) for connecting the plurality of optical signals entering any one of the plurality of optical input/output units (3) and the optical circuit assembly (6), whereby an optical input/output units (3) is substantially equally distributed to all other ones of the plurality of optical input and output units (3), the optical circuit assembly (6) comprising an optical circuit in which a plurality of independent branched optical waveguides (22) merge into a single main optical waveguide (21), a reflective surface (4) formed at an end of the main waveguide (21), and the plurality of guide optical fibers (8) being connected to the corresponding plurality of independent branched optical waveguides (22).
摘要:
It is intended to provide an organic peracid polymer composition which is stable, odorless and has sufficient water solubility and is suitably used as a bactericide, a bleaching agent and a cleaning agent. By mixing and dissolving an organic acid polymer, hydrogen peroxide and an inorganic acid and maintaining the mixture for a period ranging from 1 hour to 1 month at a temperature ranging from 10 to 80° C., the organic peracid polymer-containing composition containing an organic peracid polymer (2 to 50% by weight) and, in some cases, the hydrogen peroxide (2 to 50% by weight) and the inorganic acid (0.1 to 10% by weight) is obtained.
摘要:
The present invention provides a curved optical waveguide with reduced loss. Particularly, it relates to a waveguide with rectangular cross-section which has a curved portion, wherein the relation between the width D of the waveguide at the curved portion and the radius R of the curvature is R/D.ltoreq.500. This waveguide is provided with at least one cladding inside the core of said curved portion, thereby dividing the waveguide at the curved portion in a plurality of narrow optical waveguides. This enables a large reduction of the loss even in curved optical waveguides with sharp curves, and realizes inexpensive optical waveguides.
摘要翻译:本发明提供一种具有减小损耗的弯曲光波导。 特别地,涉及具有弯曲部分的具有矩形横截面的波导,其中弯曲部分处的波导的宽度D与曲率的半径R之间的关系为R / D <500。 该波导在所述弯曲部分的芯部内部设置有至少一个包层,从而在多个窄光波导中的弯曲部分处划分波导。 这使得即使在具有尖锐曲线的弯曲光波导中也能大大降低损耗,并实现廉价的光波导。
摘要:
The present invention is an optical device including an optical circuit in which a plurality of branched optical waveguides are connected to a light receiving side and a light ejecting side of a main optical waveguide which mixes the entering light. The branched optical waveguides include a beginning and a terminal end. The terminal end is connected to an optical fiber and the beginning end is connected to the main optical waveguide. At least one of the branched optical waveguides has a slope or taper construction which is wider at the terminal end than at the beginning end, in order to improve lost variance and to reduce loss of light signals. The present invention also provides a method for manufacturing the above-described optical device to be used in optical local networks and optical instrumentation control systems.