32results about How to "Good light transmission performance" patented technology

In a submount main body (1) composed of a single crystal silicon, a mounting surface (4) on which a light-emitting device (11) is mounted is composed of a (100)-oriented surface and the inner surface of a through hole (3) which is formed by anisotropic etching is parallel to the (110)-oriented surface. The light-emitting portion of the light-emitting device (11) is arranged to face a device-side opening (31) which opens into the mounting surface (4) of the submount main body (1). Consequently, heat generated in the light-emitting device (11) can be discharged to the outside more efficiently than the case where the light-emitting portion is arranged to face a side opposite to the submount side. Specifically, light from the light-emitting device (11) is reflected by a reflective surface formed on the surface of the through hole (3), and highly efficiently transmitted outside of the submount main body (1).

A polycarbonate resin composition which has high light transmission performance in the visible light region, excellent infrared shielding properties and excellent resistance to molding heat, can contribute to the reduction of an environmental burden, and has such high designability that it can be tinted in various colors as well as a molded article thereof.The polycarbonate resin composition comprises:(A) 100 parts by weight of a polycarbonate resin (component A);(B) 0.001 to 0.1 part by weight of an inorganic infrared shielding material (component B); and(C) 0.01 to 1 part by weight of an ultraviolet absorbent represented by the following formula (1) (component C).

The invention discloses a method for preparing an organic-inorganic hybrid perovskite nanowire. The method for preparing the organic-inorganic hybrid perovskite nanowire includes the following steps of: (1) adding PbI2 (lead iodide), MAI and PEAI (polyether ester acetamide) dropwise to a benign solvent according to the molar ratio of 1: (0.7-1): (0.3-0.5) and generating perovskite precursor fluidthrough reaction; (2) adding the perovskite precursor fluid produced in step (1) dropwise to a stirred poor solvent with the volume ratio of the perovskite precursor fluid and the poor solvent to be (0.2 to 1): 200 ; (3) centrifuging the liquid formed in step (2) and taking supernatant to obtain the organic-inorganic hybrid perovskite nanowire. The method for preparing the organic-inorganic hybridperovskite nanowire has the advantages of simple and efficient operation, simple preparation process, short preparation cycle, less use of precursor materials, high product purity and low preparationcost.

The invention discloses a multi-core radiation-resistance optical cable and a manufacturing process thereof. The multi-core radiation-resistance optical cable comprises a multi-core reinforcement optical unit, a reinforcement fiber layer and an outer protection layer, wherein the outer portion of the multi-core reinforcement optical unit is wrapped by the reinforcement fiber layer, and the outer portion of the reinforcement fiber layer is wrapped by the outer protection layer; the multi-core reinforcement optical unit is formed by a plurality of optical units with filling cores as core wires in a twisting mode, and each optical unit is wound on the filling cores at a certain twisting pitch and reinforced through finer denier winding yarns; each optical unit is composed of an optical fiber, a high-low temperature resistance coating and a buffer layer, the high-low temperature resistance coating is coated on the outer portion of the optical fiber, and the outer portion of the high-low temperature resistance coating is wrapped by the buffer layer. The multi-core radiation-resistance optical cable and the manufacturing process thereof have the advantages that the external diameter is small, the weight is light, the bending resistance and the light transmission performance are good, the engineering application is easy, and the multiple optical fiber transmission consistency is good. The multi-core radiation-resistance optical cable and the manufacturing process thereof are suitable for high-speed large-volume data transmission in a space navigation environment.

A special type light cone with the surface being coated with a nano-film mainly comprises a cone body, a large end and a small end, wherein surfaces of the large end and the small end are coated with a broadband antireflection nano-film of which the wave band being 300-2000 nm and the thickness ranging from 50 nm to 500 nm, and a conical surface of the solid cone body is coated with a SiO2 / ZrO2 film system high-reflectivity nano-film of which the thickness ranging from 100 nm to 1000 nm. The light cone provided by the present invention is made of ordinary crown glass. The special type light cone has the advantages of being simple in structure, easy to manufacture, high in coupling efficiency and low in cost, and is applicable to occasions such as light beam reception and light beam coupling and sensing.

The invention discloses a packaging method for organic scintillation crystals. The packaging method comprises silicone rubber casting, placement of organic scintillation crystals, vacuum exhaust molding, and room temperature radiation curing. The packaging method of the organic scintillation crystal of the present invention can save the processing steps of the organic scintillation crystal, reduce the reduction of the volume of the organic scintillation crystal and the decrease of the fluorescence intensity caused by the processing, and the cast silicone rubber can not only realize the fixation of the organic scintillation crystal, It can also enhance the shock resistance of organic scintillation crystals.

A silica optical fiber with excellent light transmission performance and a preparation method thereof, the silica optical fiber is firstly coated with an azobenzene polymer solution on a quartz substrate to obtain a composite quartz, and then coated with a diamond particle solution on the composite quartz Obtain quartz optical fiber; Described azobenzene polymer solution is that azobenzene polymer is dissolved in cyclopentanone and is made into the solution of 25-35mg / mL, and described azobenzene polymer, by molar percentage, mainly consists of Composed of the following components: Isobutyl methacrylate POSS 35‑45%, Trifluoroethyl methacrylate 30‑50%, Azobenzene monomer 6‑[4‑(4‑cyanoazophenyl)benzene Oxy]ethyl methacrylic acid 20‑30%. The silica optical fiber with excellent light transmission performance and the preparation method thereof according to the present invention have reasonable formulation and simple preparation process, and the prepared silica optical fiber has excellent light transmission performance, is easy to produce on a large scale, and has the advantages of easy processing, good toughness, The advantages of high flexibility, higher Young's modulus and thermo-optic coefficient have broad application prospects.

A transparent glass ceramics of RE-doped oxyfluoride is proportionally prepared from SiO2, Al2O3, EnF2, MF2 and ReF3, where M is 2-valence alkali-earth metal ion chosen from Mg, Ca, Sr, and Ba and Re is 3-valence RE ion chosen from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, through high fusing and heat treating. It can be extensive used in laser, luminous and optical communication field.

The invention discloses a method for using a recrystallization method to prepare a lead-halide perovskite nanowire. The method comprises the step of dropwise adding a poor solvent and a polar aprotic solvent in a spin coating process of preparation of APbI3 perovskite through a one-step method to prepare the lead-halide perovskite nanowire. The preparing method has the advantages that the operation is simple and convenient, and the reaction time can be saved. One-dimensional perovskite nanocrystalline film prepared through the one-step method is uniform in length and good in coverage degree, and can be used as a candidate material for an optical detector and a laser device. Compared with pure perovskite, the perovskite nanowire has a better optical conduction capability, and can be used in devices like an optical conductor and the laser device.

The invention relates to a light coupling solid-core light cone. The light coupling solid-core light cone is made of quartz materials and has two end surfaces with the different diameters, and a bus of a cone body of the light core consists of three sections, which is a straight line, an arbitrary smooth curve and the straight line respectively. The light coupling solid-core light cone of the invention has good light transmission performance, small light energy loss, simple and reasonable structure, easy manufacture and low cost, thus being applicable to the light beam receiving, aggregation of free-space light, coupling between a light source and an optical fiber and other occasions in the wireless optical communication.