Laser InterferometryMetrologyMichelson InterferometersOptical Measuring InstrumentsAlignmentBeam SplittersDimensional MeasurementInstrument ErrorsThe first measurements of length by interferometry were reported by Michelson and Benoit (1895). Limitations of interferometric length and distance measurements with respect to...
The multi-purposelaser measuring machineis one kind of length measuring instruments which can be used to take measurement relatively and absolutely,it is widely used in geometrical quantity measurement. 万能激光测长机是一种可以进行绝对测量和相对测量的长度计量仪器,用途非常广泛。
1)length measurement长度计量 英文短句/例句 1.dissemination of quantity in length measurement长度计量的量值传递 2.Optical length measuring instruments--Basic parametersGB/T3720-1988光学长度计量仪器基本参数 3.You must measure the length by rule and line.你必须准确地计量长度。 4.Establishment of Computer...
A new laser differential confocal focal-length measurement method is proposed for the measurement of an ultra-long focal-length. The approach proposed uses the property of an axial intensity curve that the absolute zero precisely corresponds to the focus of the objective in a differential confocal ...
processing and assembly of various optical components and mechanics. It occupies 10,000 square meters of modernized facilities with hundreds of equipments and instruments. More importantly, Oplens owns an excellent team of more than 200 experienced engineers and workers,...
4) laser measuring machine 激光测长机 1. The multi-purposelaser measuring machineis one kind of length measuring instruments which can be used to take measurement relatively and absolutely,it is widely used in geometrical quantity measurement. ...
The multi-purposelaser measuring machineis one kind of length measuring instruments which can be used to take measurement relatively and absolutely,it is widely used in geometrical quantity measurement. 万能激光测长机是一种可以进行绝对测量和相对测量的长度计量仪器,用途非常广泛。
Some questions remain, such as, “Why does the AL measurement decrease after cataract extraction?” Many studies have shown the AL measures about 0.07 mm shorter after cataract extraction. There seem to be three possible answers: (1) RIs are incorrect; (2) segmental AL is needed, instead of...
Full-aperture long focal-length measurement based on divergent beam A new method for long focal-length measurements is proposed. In this method, we employ divergent beam and two Ronchi gratings of different periods, as the alternative to collimated beams and two identical gratings in traditional met...
1, top). For the measurement (Fig. 1, bottom), a time-dependent transverse kick is given to the electron bunch6. Figure 1 Operation with RFD off (top) and on (bottom): effect on the beam. Full size image In this way, the longitudinal and transverse bunch dimensions of the beam ...