Grating pitch 意味
A grating is any regularly spaced collection of essentially identical, parallel, elongated elements. Gratings usually consist of a single set of elongated elements, but can consist of two sets, in which case the second set is usually perpendicular to the first (as illustrated). When the two sets are perpendicular, this … See more A grating covering a drain (as illustrated) can be a collection of iron bars (the identical, elongated elements) held together (to ensure the bars are parallel and regularly spaced) by a lighter iron frame. Gratings … See more • Grate (disambiguation) • Grille (architecture) • Manhole cover • Pedestrian infrastructure See more Grating can also come in panels that are often used for decks on bridges, footbridges and catwalks. Grating can be made of materials such as See more As optical elements, gratings are images having the characteristic pattern of a grating, that is a pattern comprising several alternating, parallel lines. The lines alternate between high and low reflectance (black-white gratings) or high and low transmittance (transparent … See more WebDec 1, 2024 · Traceable and long-range measurement method for grating pitch is proposed using a scanning grating method, which means an in situ equal-period grating is mounted on a moving stage that is continuously measured with a laser interferometer.The interference signal generated from the moving grating can be measured with a long …
Grating pitch 意味
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Webグレーチング(英語: grating)とは、主に鉄などの金属で作られた格子状のふた。道路や歩道の溝蓋（みぞぶた）や工場やプラントなどの足場など広範囲に使用される。 http://www2.egr.uh.edu/~wshih/resources/Journal-papers/Analog_tunable_grating_JMEMS.pdf
Webグレーチング(英語: grating)とは、主に鉄などの金属で作られた格子状のふた。 道路や歩道の溝蓋（みぞぶた）や 工場 やプラントなどの足場など広範囲に使用される。 Web1 (Also called) grate a framework of metal bars in the form of a grille set into a wall, pavement, etc., serving as a cover or guard but admitting air and sometimes light. 2 short …
WebJan 1, 2024 · A scale grating having grating pattern structures with a nominal grating pitch of 1.6 μm over an X-directional length of 100 mm from a commercial interferential scanning-type linear encoder was employed as the target scale grating. Each of the positive and negative first-order diffracted beams emanated from the scale grating was then … WebA grating itself cannot be given a specification detailing how a certain amount of rotation corresponds with a certain separation of wavelengths without knowing other system …
WebJul 5, 2024 · 同时，渐变折射率多模光纤20的右侧端面位置处正弦波峰位置的斜率为0，那么在光束传播的过程中可以理解为光束的发散角接近于0，意味着从光纤端面出射光类似于平行光。出射光接近于0有利于螺旋波带片40结构的设计，使得螺旋波带片40结构的加工难度降低。 chinese word for freedomWebNov 1, 1999 · Pitch measurements were performed on gratings made by holographic exposure of photoresist and on gratings made by laser-focused atomic deposition of Cr. The line pitch for these gratings ranged from 200 nm to 400 nm with an estimated standard uncertainty of the average pitch of 25 X 10^ (-6). This fractional uncertainty is derived … grange hall burger bar chicagoWebA method of manufacturing a chirped optical fibre grating (330), the method comprising the steps of: etching the cladding of the optical fibre to vary the cross-sectional area of a portion of an optical fibre (60); and impressing a grating of uniform pitch (130) on the portion of the fibre; characterised in that the portion of the fibre is ... chinese word for friendWebDec 1, 2024 · As is shown in Fig. 10, there exists the significant nonlinear phase drift (blue line) behind the reference grating without fringe-locking and the mean drift is 0.247p, with pitch measurement repeatability of 265.95 ppm.As a consequence, the fringe-locking configuration is necessary. With the fringe-locking configuration, a significant … grange hall elementary school hoursWebgrat· ing ˈgrā-tiŋ. Synonyms of grating. 1. : a wooden or metal lattice used to close or floor an opening. 2. : a partition, covering, or frame of parallel bars or crossbars. 3. : a system … chinese word for funWebFeb 1, 2008 · The developed 1-D laser-and-vision measuring system is used to measure the geometric size (pitch) of grating type linear encoders or industrial line scales. Software … chinese word for gibbonWebCalibration of grating pitch P by optical diffraction consists of a measurement of the angle θ that an optical beam is diffracted by the grating spacing according to the well-known grating equation: The diffractometer method measures the average grating pitch over about a 1-mm to 2-mm area, depending upon the spot-size of the laser beam. chinese word for god