Chinese Academy of Sciences

University of Science and Technology Beijing

Beijing Zitiao Network Technology Co., Ltd.

Beijing Huarong Tianchuang Superconduct Technology Development Co., Ltd.

O. Ya. Institute for Radiophysics and Electronics of National Academy of Sciences of Ukraine

Beijing Huaronttianchuang Superconduct Tech Dev Co

Usikov Inst Radiophysics & Electronics, Nasu

Sheng Luo

Hong Li

Xu Wang

Liang Sun

Jia Wang

Yun Wu

Jiangming Huang

Mykola Cherpak

Valerii Skresanov

Oleksandr Barannyk

Volodymyr Glamazdin

Yusheng He

Yuanpeng Wang

Oleksandr Shubnyj

Oleksandr Shubny

Volodymyr Zolotarev

Myhaylo Natarov

An optical system and a display device are provided. The optical system includes an optic group, a polarizing transflective film, a phase retardation film, and a transflective film. The optic group includes a first optic and a second optic; the polarizing transflective film and the phase retardation film are on one side of the optic group, the transflective film is on the other side of the optic group. The first optic includes a plane surface and a first aspheric surface having a curvature radius of −120 mm to −140 mm, the second optic includes a second aspheric surface having a curvature radius of −175 mm to −185 mm and a third aspheric surface having a curvature radius of −100 mm to −110 mm; a focal length of the optical system is 26 mm to 30 mm, an effective aperture of the optic group is 55 μm to 58 μm.

Optical system and display device

A measuring whispering-gallery-mode resonator includes: a dielectric resonating body with a rotation axis, a superconducting sample under test mounted to the resonating body and a coupling unit for coupling a measuring waveguide with the resonating body. One side of the resonating body connected with the coupling unit has a first endplate, in which m coupling holes penetrate through the first endplate, and centers of the m coupling holes are arranged to be evenly spaced along a circle whose center is on the rotation axis. The coupling unit has a feeder line which is a coaxial waveguide, and an axis of the coaxial waveguide coincides with the rotation axis. One end surface of the coaxial waveguide, which is perpendicular to the rotation axis, abuts the first endplate; and the azimuth index of operated whispering gallery mode in the resonator is an integer multiple of the number m of the coupling holes.

Measuring whispering-gallery-mode resonator

A band-pass filter having a body, a rectangular waveguide, and a dielectric insert, the dielectric insert has a dielectric plate and a high temperature superconductive film in line with a plurality of rectangular windows of the same height. The waveguide has a&#xd7;b cross-section, a being length of the long side walls and b the length of the short side walls. Each long side wall has a fixing groove at the central portion and a rectangular recess in the fixing groove. The dielectric plate has two ends in the fixing grooves and is symmetric with a perpendicular bisecting plane of the long side wall. The rectangular recess is symmetric to the perpendicular bisecting plane and has the same length as that of the waveguide, with its width w satisfying t&#x3c;w&#x3c;a/2, and depth d satisfying d&#x3c;&#x3bb;/4, t being total thickness of the dielectric plate and the high temperature superconductive film, and &#x3bb; the wavelength of the central frequency of the pass-band of the band-pass filter.

Rectangular band-pass filter having recesses of less than one-quarter wavelength depth formed therein for fitting a dielectric insert with a superconductive film within the recesses

Growing community of inventors

Beijing, China

Sheng Luo