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astigmatic adj.1.散光的;【物理學】像散的。2.矯正散光的。3...

astigmatic pencil

A sil flying head is designed to keep the distance between sil and recording medium in near - field range . a sil optical data storage system is built up when the recording head is combined with sil flying head . meanwhile , using astigmatic focusing error detection technology and twin optical pick - up heads , a novel nontouching nanometer measurement method is developed to measure the flying height of sil , and provides us with a powerful tool to optimize the design of sil fly head 在sil存儲技術研究方面,首先提出一種光學玻璃熱熔加工制作sil的新方法,該方法克服了小半徑球透鏡加工的難題,成功制作出了半球固體浸沒透鏡;設計了sil飛行頭系統,并利用光學頭像散法聚焦誤差檢測原理,設計出一種雙光學頭sil飛行高度測量方案,實現了sil飛行頭飛行高度的測量。

Based on the generalized huygens - fresnel diffraction integral and in consideration of the effect introduced by astigmatism , the transformation properties of gaussian beams passing an astigmatic lens are studied analytically , the beam quality of astigmatic gaussian beams is analyzed in terms of the beam propagation factor ( m2 - factor ) and power in the bucket ( pib ) , and illustrated with numerical examples 基于廣義惠更斯-菲涅爾衍射積分,并考慮了像散的影響,對高斯光束通過像散透鏡后的傳輸特性作了解析研究,以光束傳輸因子和桶中功率為參數分析了像散高斯光束的光束質量,并以數值計算例加以說明。

Chapter 3 erected the relationship between refraction error and cornel ablation depth in theory . the paper proposed various mathematical models which can be used for proceed the simple myopia , simple hypermetropia , compund myopia astigmatism , compund hypermetropia astigmatism , simple myopia astigmatism , simple hypermetropia astigmatism , mixed astigmatism . the influence of the astigmatic axis and the degree of astigmatism on the correction field is discussed . wavefront aberration guided excimer laser cornea ablation is a main method of customised corneal ablation 以數學的方法研究出了屈光性單純近視、屈光性單純遠視、復性近視散光、復性遠視散光、單純近視散光、單純遠視散光、混合性散光屈光矯正的物理模型;并揭示了不同軸位的轉換規律,對不同散光情況下的初始角膜兩個不同方向的曲率半徑和手術后最終的曲率半徑作了定量的研究。

The pc rigid frame bridge can meet with the carrying capacity of long span bridge . this kind of structure is fit for the comfortable steer with no other expansion joints except for those at the two ends . it characterized the wholeness of structure , good astigmatic ability and load - bearing ability , construction rapidness , bright and pithiness bridge style , easy to maintain and convenient for segmental construction using the cantilever technique , so rigid frame bridge have taken an increasingly great proportion in bridges constructed and those under construction at city and county 剛構橋能滿足特大跨徑橋梁的受力要求,除兩端以外無其他伸縮縫,有利于行車平順舒適,具有結構整體性能好、抗震能力強、承載能力強、施工快捷、橋體簡潔明快、維護方便和便于懸臂施工等結構特點,因而在城鄉已建和在建的橋梁中占據了越來越大的比重。

In this paper , the differential astigmatic detection method for defocus measurement with one - way defocused detector is developed from the conventional differential astigmatic detection 本文在傳統差動像散檢測方法基礎上,給出一種基于單向離焦的差動像散檢測方法。

Lasers and laser - related equipment - test methods for laser beam widths , divergence angle and beam propagation ratios - part 1 : stigmatic and simple astigmatic beams 激光和激光相關設備.激光束寬度發散角和束擴散率的試驗方法.第1部分:無象散和簡單象散束

Lasers and laser - related equipment - test methods for laser beam widths , divergence angles and beam propagation ratios - stigmatic and simple astigmatic beams 激光和激光相關設備.激光束寬度發散角和束擴散率的試驗方法.無象散和簡單象散束

Lasers and laser - related equipment - test methods for laser beam widths , divergence angle and beam propagation ratios - part 2 : general astigmatic beams 激光和激光相關設備.激光束寬度發散角和束擴散率的試驗方法.第2部分:一般像散束

Lasers and laser - related equipment - test methods for laser beam widths , divergence angles and beam propagation ratios - general astigmatic beams 激光和激光相關設備.激光束寬度發散角和束擴散率的試驗方法.一般象散束

Ajw s habitual gesture : many hand movements with talking , to blink eyes frequently it is probably because ajw is astigmatic 喜歡的手勢:時常眨眼并打很多手勢不詳的兆頭:當不愿意作某件事時總是進行的不順利。

Two detectors are used both in conventional differential astigmatic device and the device given in this paper 與差動像散離焦檢測原理相同的是,二者都是采用雙探測器進行測量。

Astigmatic image error 象散象差

Astigmatic optical resonator 象散光諧振器

A study on a compact kerr - lens mode - locking resonator with astigmatic compensation 緊湊型像散補償的克爾透鏡鎖模腔

Parameter changes of gaussian beams after passing through astigmatic lens 高斯光束通過像散透鏡后光束參數的變化