Shanghai Jiaotong University

Carl Zeiss Meditec Ag

Carl Zeiss Meditec Gmbh

Thermo Fisher Scientific (shanghai) Instruments Co., Ltd.

Xiaoxian Guo

Tao Peng

Jianmin Yang

Xinliang Tian

Fei Li

Bin Hu

Alexandre R Tumlinson

Longfei Xiao

Martin Peschka

Shenghai Wu

An optical system is provided which comprises: a light source () for emitting light beam; an optical main axis; an optical shaping element () for shaping a light beam facing the light source () and directly adjacent to the light source (), wherein the optical shaping element () includes a first freeform surface facing the light source (), the light beam is shaped by means of the first freeform surface of the optical shaping element () in such a way that light intensity of the light beam has a flat-top profile on a first axis which is perpendicular to the optical main axis. With this optical system, a desirable light intensity profile can be achieved by using only a single optical element. Moreover, a flow cytometer including this optical system is provided.

Optical system and flow cytometer

A positioning device for arrangement of a basin false bottom in ocean engineering comprises a laser transmitting system, a rotating platform system, and a control and calculation system. The laser transmitting system comprises a laser transmitter used for providing laser beams. The rotating platform system comprises a two-degree-of-freedom rotating platform used for carrying the laser transmitter and making the laser beams have spatially arbitrary directivity. The control and calculation system is used for calculating, according to given coordinates, the angle by which the two-degree-of-freedom rotating platform needs to rotate, controlling rotation of the two-degree-of-freedom rotating platform, and making the laser beams transmitted by the laser transmitter accurately indicate the given coordinates at the basin false bottom. Compared with an existing manual positioning method for a false bottom, the positioning device is high in accuracy, easy to operate, and rapid, and saves labor and greatly improves the test efficiency.

Positioning device for arrangement of basin false bottom in ocean engineering

A real-time monitoring system for float-over installation in ocean engineering, which relates to real-time monitoring for the relative position between the leg mating unit and the stabbing cone of upper module, mainly includes: a shooting collection system and a real-time processing and displaying system, the shooting collection system mainly including a CCD camera and a high light-reflecting landmark, the high-precision CCD camera being a graphic information collecting device, and the high light-reflecting landmark being a mark made of high light-reflecting and light-absorbing materials; a real-time processing and collecting system, which receives and displays in real time, analyzes and stores the graphic information, capable of calculating the coordinates of relative position between the stabbing cone and the leg mating unit in real time. The system achieves real-time close-range photogrammetry for the position of the leg mating unit, characterized by clear positioning, explicit functions, being easy to realize the structures, thus solving the difficult problem that the relative position between the leg mating unit (LMU) and the stabbing cone of the module is difficult to be measured accurately in real time during the float-over installation.

Real-time monitoring system for float-over installation

An OCT system comprises an OCT scan module for retinal scanning and an add-on anterior segment scanning module which includes at least one anterior segment scan lens () and an add-on fixation target () which is used to maintain the viewing direction of the eye () under investigation while achieving anterior segment scanning. Because the anterior segment scan module added to the exterior of an existing OCT system for retinal scanning has an add-on fixation target (), it is possible to maintain the viewing direction of the eye () under investigation while carrying out anterior segment scanning without adjusting the internal beam path of the OCT system, and the OCT system of the present invention can be adapted to patients with only one functioning eye.

Optical coherence tomography system

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Shanghai, China

Xiaoxian Guo