48results about How to "Refractive index stabilization" patented technology

The invention discloses a method for preparing a graduated color film through a magnetron sputtering machine. The method comprises the following steps that S1, an optical film system is designed; S2,a baffle is designed, and the shape of the baffle is designed according to thickness change of an optical thin film structure simulated by software; S3, vacuum coating is conducted; and S4, color andoptical performance examination is conducted, the color LAB value, visible light reflectivity curve and visible light transmittance curve of a product obtained after vacuum coating are detected, if the test result is qualified, mass production preparation can be made, and if the test result is unqualified, operation returns to the step S1. A transition area of a graduated color film prepared withthe method is natural in gradual color change, the product color is easy to adjust, and graduated color films of different colors and visual effects can be prepared according to user preparations. Compared with electric beam evaporation deposition, a film layer prepared with the magnetron sputtering machine is compact in structure, the refractive index is stable, the film layer is more stable in optical performance, and thus color stability is better.

The invention relates to a negative photoresist-based diffuser photo-etching process, which comprises the following steps that: firstly, photoresist is coated on the surface of an underlay, then the underlay which is coated with the negative photoresist in a rotating way is prebaked so as to remove solvent of the negative photoresist; then exposure is carried out, a diffuser is arranged on a mask plate, and the diffuser and the mask plate are used as a mask to perform ultraviolet exposure on the negative photoresist; finally the post-baking and developing are carried out, the negative photoresist in an exposure area is cross-linked in the post-baking process and is free from being dissolved in developing liquid, and a structure with a particular cross section is obtained; and the diffuser and the mask plate are collectively used as the mask to anticipate the exposure of the photoresist. The negative photoresist-based diffuser photo-etching process has advantages of wide application range, simple technique process, good technical repeatability, unnecessary modification of present photo-etching equipment, low cost, easiness in mass production and the like.

The invention discloses a silk-screen-printing-free light guide plate online production process and production device. During production, an optical granular raw material is prepared by selecting a PMMA, PS, PC, MS, PET or PP material of which the light transmittance is 87-90% and the refractive index is 1.53-1.62; and inorganic silicon or nano barium sulfate is selected as a dispersing agent. The process comprises the following steps: material selection; drying; material supply; hot melting; extrusion calendaring molding; cooling and detection; and film covering, cutting and stacking. By adoption of the silk-screen-printing-free light guide plate online production process and production device provided by the invention, multi-layer optical composite plates of various sizes and materials can be effectively produced; and the production equipment cost and the material requirements are low, the light transmittance and the precision of each finished product are high, and the practical value is very high.

The invention discloses online hot pressed composite panel production equipment which comprises a drier, a dedustor, a distributor, a single screw extruder, a full-automatic multi-layer coextrusion clothes rack die head, a multi-roll calender, a slow cooling rack, a defect detector, a thickness detector, a temperature equalizer, a precise temperature hot press, a traction mulch applicator, an edge cutting traction machine, a transverse cutting machine and a manipulator. A production process of the online hot pressed composite panel comprises the specific steps: S1, material selection; S2, drying; S3, material supply; S4, hot melting; S4, extrusion calendaring forming; S6, cooling and detection; S7, temperature control and hot pressing; and S8, tailoring and stacking. According to the online hot pressed composite panel production equipment and the production process thereof, one material is used and is primarily calendered and formed, so that the manufacturing process is simple, the production efficiency is high, the overall cost is low, the environment is little in influence, and the product is good in transmittance.

The invention relates to a high-transmittance optical brightness enhancement film. The film comprises a brightness enhancement film body (11), and a microprism structure (12) disposed on the upper surface of the brightness enhancement film body (11), wherein the pitch of the microprism structure is 25 [mu]m to 200 [mu]m. A manufacture apparatus of the film comprises a hot-air machine (2), a feed hopper (3), a hot-air drier (4), an air lock device (5), a hot melt device (6), a pattern roller (8) and a grinding roller (9), wherein the outlet end of the hot melt device (6) is equipped with a calender roller group (7), and the pattern roller (8) and the grinding roller (9) are in cooperation and disposed at the left side of the calender roller group (7). A manufacture process of the film comprises the following steps: S1, pattern roller preparation; S2, material preparing; S3, drying; S4, hot melting of granular materials; S5, calendaring; S6, moulding; and S7, final processing. The advantages are that processing cost is low, the influence on the environment in the manufacture process is small, the manufacture technology is simple, and transmittance is high.

The invention relates to a vaporizing material for a high refraction optics film, namely a compound with the chemical reaction of LaTiO3. The material is formed by single structure with no other doping. The density of the material is 5.2 to 5.9g/cm<3 > with good filling performance, taking Ti2O3 and La2O3, or TiO2, La2O3 and Ti as the material to be reacted under high temperature and vacuum state to produce TiO3. The LaTiO3 vaporizing material is used for producing the high refraction optics film which is a rigid medium film with good performance. The high refraction optics film is an antireflection coating of filming of a resin lens, a dichroic prism or a broad band. In the method of producing the high refraction optics film, the vaporizing material LaTiO3 is not changed in the vaporizing process and the vaporizing material LaTiO3 in crucible needs no update to keep stable refraction rate of the film. Multi high-refraction optics films are produced through once fusion and multi times of vaporization.

The invention discloses Ce-containing low-temperature sealing glass as well as preparation and application method of the Ce-containing low-temperature sealing glass. The Ce-containing low-temperature sealing glass consists of the following raw materials: B2O3, Bi2O3, ZnO and Ce(NO3)3 in a molar ratio of (10-50):(20-40):(5-30):(0-30). Through the coordination between high-concentration Bi2O3 and B2O3, the softening temperature of glass is lowered, so that low-temperature sealing is realized; Ce<3+> in a glass network prepared by melting quenching is transformed into Ce<4+>, the transformation of Bi<3+> in glass into Bi<5+> is prevented, and the refractive index of glass is stabilized; and Ce not only can further lower the softening temperature of the sealing glass, but also can adjust the expansion factor of the glass so as to remarkably improve the sealing property of the sealing glass. Moreover, Ce remarkably reduces the surface tension of the glass, improves the interface bonding property between the sealing glass and an alloy connector and is applicable to the field of photoelectric materials and other low-temperature precise sealing. According to the invention, the preparation raw materials are simple and easily available, the cost is low, the technology is simple and feasible, and the prepared low-temperature sealing glass has good performance and stable refractive index and meets the conditions of practical utilization and industrialization.

The invention relates to a broadband low-dispersion metamaterial which comprises a first substrate and a plurality of artificial microstructures, wherein the plurality of artificial microstructures are attached to one side surface of the first substrate, each artificial microstructure is a silk yarn made of conductive materials, each artificial microstructure is provided with a first main yarn and a second main yarn which are intersected, the two ends of the first main yarn are connected with two first knuckle lines, and the two ends of the second main yarn are connected with two second knuckle lines. According to the broadband low-dispersion metamaterial disclosed by the invention, a relatively stable refractive index can be provided in a broader frequency range, namely that the metamaterial has a broadband low-dispersion characteristic.

The invention discloses Fe-containing low-temperature sealing glass as well as preparation and use methods thereof. The Fe-containing low-temperature sealing glass is prepared from the following raw materials: B2O3, Bi2O3, ZnO and Fe2O3. Through the coordinating function of Bi2O3 and B2O3, the softening temperature of glass is reduced, and the low-temperature sealing is realized; by the adding of Fe2O3, the softening temperature of the sealing glass can be further reduced, and the refractive index of the glass can be stabilized; and furthermore, magnetic Fe3O4 generated inside can improve the automatic application efficiency of a sealing process. The preparation raw materials are simple and readily available; the process is stable, and the cost is reduced; and the Fe-containing low-temperature sealing glass is applicable to the field of photoelectric materials and other low-temperature precision packages.

Disclosed are methods involving the therapeutic use of human PRG4 (lubricin) protein, to improve vision, to reduce aberrations such as impaired night vision, halos, and glare, to improve the stability of the tear film, and to homogenize the refractive index of the surface of the eye.

The invention provides a semiconductor silicon-based optical waveguide device and a preparation method thereof, and relates to the field of optical waveguide chip producing and manufacturing. The preparation method of the semiconductor silicon-based optical waveguide device comprises the following steps that (a) a bottom cladding layer is deposited on a non-polished surface of a single-surface-polished silicon wafer; (b) a lower cladding layer, a core layer and a mask layer are deposited in an overlapped mode in sequence on a polished surface of the single-surface-polished silicon wafer; (c) awaveguide channel is formed after the core layer is etched, and the mask layer is removed; and (d) an upper cladding layer is deposited on the etched core layer, and thus the semiconductor silicon-based optical waveguide device is obtained. Preferably, the mask layer is a metal mask layer, and the technical problems that quartz substrate slices are used in conventional waveguide devices, the dependency on the quality of the substrate slices is high and special quartz processing equipment needs to be ordered for manufacturing are solved. According to the preparation method of the semiconductorsilicon-based optical waveguide device, semiconductor silicon is adopted as a substrate slice, compatibility with silicon semiconductor manufacturing equipment is good, the influence of the substrateslice refractive index is avoided, and design and manufacturing are more flexible.

The invention relates to a method for preparing an yttrium-oxide-stabilized hafnium oxide vacuum coating material. The method is characterized by comprising the following steps: 1) evenly mixing raw materials (hafnium oxide and yttrium oxide powder), wherein a molar ratio of hafnium oxide to yttrium oxide is (73-98): (2-27); adding a polyvinyl alcohol binder so that the powder materials are agglomerated and granulating to obtain granular material; (2) pre-sintering the granular material at a pre-sintering temperature of 1260 DEG C; and (3) sintering in a vacuum sintering furnace at the vacuum degree of 1*10<-2>-1*10<-4> Pa and the heating speed of 3-8 DEG C/min; when the temperature reaches 1700-2280 DEG C, carrying out heat preservation for more than 150 minutes, and then naturally cooling to room temperature. By the method, the problems of instability and non-uniform refractive index during the coating of traditional hafnium oxide coating material can be solved and meanwhile, the damage threshold of a hafnium oxide film is increased.

The invention discloses Sn-containing low-temperature seal glass and preparing and using methods thereof. The Sn-containing low-temperature seal glass is composed of B2O3, Bi2O3, ZnO and SnO2 according to a molar ratio of 10-50:20-40:5-30:0-30. Softening temperature of the glass is lowered through synergism of high-concentration Bi2O3 and B2O3 to realize low-temperature seal; Sn2+ in a glass network prepared through melting-quenching is converted into Sn4+ in the process of heating, conversion from Bi3+ in the glass to Bi5+ is stopped, and refractivity of the glass is stabilized; Sn can further lower the softening temperature of the seal glass and can adjust expansion coefficient of the glass, so that seal performance of the seal glass is improved remarkably; the glass is suitable for photoelectric materials and other low-temperature precise seal fields. The raw materials for preparation are simple and easy to obtain, the preparation method is stable, low in cost and simple and easy to implement, and practical and industrial conditions are met.

The invention discloses Mn-containing low-temperature seal glass as well as a preparation method and use method thereof. The seal glass comprises the following raw materials: B2O3, Bi2O3, ZnO and MnO2. By virtue of the coordination of high-concentration Bi2O3 and B2O3, the softening temperature of the glass is decreased, and low-temperature sealing is realized; by adding MnO2, the refractive index of the glass can be stabilized, furthermore, the softening temperature of the seal glass is further decreased, the swelling coefficient of the glass can be further regulated, and the sealing performance of the seal glass can be remarkably improved. The preparation method has the beneficial effects that the raw materials are simple and easily available, the process is simple and stable, the cost is saved, and the practical utilization and industrialization conditions are achieved. The seal glass is applicable to the fields of photoelectric materials, low-temperature precise packaging and the like.

The present invention includes apparatus and methods for producing a conditioned immersion fluid for use in an immersion lithography process. The conditioned immersion fluid protects the immersion system lens and reduces or eliminates deposition of contaminants onto the lens that can adversely affect the lens transmission and durability of an immersion lithography system.