Optical limiting materials show a non-linear transmittance of light, with transmission varying with the intensity of the incident radiation. Transmission is high at normal intensity, but low for intensive beams. Such materials are useful to protect, inter alia, optical elements, sensors, or the huma.....
[更多]
Flue gases produced in combustion processes, such as coal-fired power plants, automobiles, smelters, etc., contains huge amount of nitrogen and sulfur oxides, carbon monoxide and particulates. They contribute significantly to atmospheric pollution and some of them are stringently controlled by legis.....
[更多]
This invention is about three new measuring methods to determine the twist angle and retardation value of any twisted nematic liquid crystal cell. Twist angle of the liquid crystal alignment and the retardation value are important design parameters in determining the optical performance of liquid c.....
[更多]
Voltage-controlled oscillators (VCO) are one of the most essential building blocks in phase-locked loops and frequency synthesizers, which are required in all data communication and telecommunication systems for generating highly accurate timing reference sources. However, existing VCOs need a suppl.....
[更多]
A new bistable liquid crystal display (LCD) is invented. It has many advantages over existing bistable LCDs, such as low voltage operation, permanent bistability, and fast switching. It can be used in smart cards and in low power applications. LCDs that are truly bistable under zero voltage bias a.....
[更多]
| |< <- | [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] | -> >| |
