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

A radiation sensitive refractive index changing composition comprising (A) a decomposable compound, (B) a non-decomposable compound having a higher refractive index than the decomposable compound (A), (C) a radiation sensitive decomposer and (D) a stabilizer. By exposing this composition to radiation through a pattern mask, the above components (C) and (A) of an exposed portion decompose to create a refractive index difference between the exposed portion and an unexposed portion, thereby forming a pattern having different refractive indices.

The invention relates to a gradient refractive index waveguide device and a preparation method thereof. The gradient refractive index waveguide device comprises a GRIN (Gradient Refractive Index) lens and a coating layer, wherein the GRIN lens comprises a substrate, a waveguide layer and at least two GRIN layers; the GRIN layer at the most bottom layer is deposited on the substrate; the waveguide layer is arranged between two adjacent GRIN layers; the coating layer coats the outer side of the GRIN lens; the refractive index is gradually increased from the GRIN layer at the most top layer or the GRIN layer at the most bottom layer to the waveguide layer. The gradient refractive index waveguide device disclosed by the invention solves the technical problem that the GRIN lens in the existing waveguide device cannot be photoetched or etched layer by layer, so that the fidelity is descended, and the precision is reduced; the GRIN lens is prepared by a PLC technology; the PLC technology is advantaged by that the GRIN layers and the waveguide layer in the GRIN lens can be integrated on the same chip, so that the GRIN lens prepared by the PLC technology has the advantages of monolithic integration, low cost and good reliability.

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 adhered to one side surface of the first substrate; the artificial microstructures are silk yarns made of a conductive material; each artificial microstructure is provided with a first principal line and a second principal line which intersect with each other; two first branch lines are connected to two ends of each first principal line; two second branch lines are connected to two ends of each second principal line; the two ends of each first branch line are bent inwards and extended to form two first broken lines; and the two ends of each second branch line are bent inwards and extended to form two second broken lines. According to the broadband low-dispersion metamaterial provided by the invention, a more stable refraction index can be provided in a broader frequency band, so that the characteristic of broadband low dispersion can be achieved.

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 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 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.