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- Experimental Study of Two-dimensional Orthogonal Segmented Wedge Array Optical System Applied to Uniform Illumination of Large Focal Spot 二維正交光楔列陣大焦斑均勻照明光學(xué)系統的實(shí)驗研究
- large focal spot 大焦點(diǎn)
- Using spherical wave beam to illuminate an axicon will result in a beam with small central spot and large focal depth, which is useful for laser communication and long-distance measurement. 由于球面波入射圓錐透鏡所產(chǎn)生的出射光束具有焦深長(cháng)和中心光斑直徑較小的特點(diǎn),適合激光通信以及長(cháng)距離測量。
- Combined with SSD, the new CPP have the better effect for controlling focal spot than the CPP designed by "standard" method. 進(jìn)一步分析表明,新方法設計的CPP與光譜色散勻滑技術(shù)耦合的效果更佳。
- In order to be able to evaluate a large focal length range, different converter lenses must be used. 為了能夠計算較大的焦距范圍,根據焦距的大小必須使用不同的轉換透鏡。
- Under the different laser parameters,the electron energy gain depends on the laser intensity,focal spot size and pulse width. 不同激光參量條件下,得到了電子的能量增益與激光強度、焦斑大小和脈沖寬度關(guān)系。
- The unsteadiness of air becomes prohibitive only if instruments with large focal length are used. 只有在使用長(cháng)焦距的儀器時(shí),才不允許空氣的不穩定。
- The excursion of centroid position of focal spot may be easily acquired with the centroid position expression of focal spot. 利用焦斑質(zhì)心位置表達式,可分析和確定由于振幅調制和相位畸變導致的質(zhì)心位置偏移。
- Due to optical diffraction limits, the focal spot size is influenced by the incident wavelength and the numerical aperture of a lens. 摘要:由于光學(xué)繞射極限的限制,聚焦光點(diǎn)受到入射光波長(cháng)及透鏡數值孔鏡的影響。
- Abstract he method of measuring the focal spot size of X-ray source was designed by using a monolithic glass polycapillary X-ray collimator (MGPXRC). 摘要 設計了一種測量X射線(xiàn)光源焦斑尺寸的方法:多毛細管準直器法。
- The centroid position of the focal spot directly depending on intensity distribution and phase slope distribution of near field is derived, and its physical meaning is described. 進(jìn)一步推導了焦斑質(zhì)心位置對光束近場(chǎng)強度分布和相位斜率分布的依賴(lài)關(guān)系式,并對該式清晰的物理意義進(jìn)行了闡述。
- There are two critical values for outer radius of the inner annular zone, at which focal spot changes sharply.The tunable range of the focal depth is very considerably. 增大內圓環(huán)的外半徑,焦深沿軸向變大,相位板可以調節光學(xué)焦深,并且可調的范圍很大。
- Focal spot to image receptor distance 焦點(diǎn)至影像接收器距離
- He bit off a large piece of the apple. 他咬下一大塊蘋(píng)果。
- Investigation of Controlling X-Ray Tube Focal Spot X射線(xiàn)管焦點(diǎn)控制研究
- Large billboards have disfigured the scenery. 大型告示板已破壞了景色。
- He has a large amount of mail to answer every day. 他每天有大量的信件要回復。
- His large income enabled him to live in comfort. 他那豐厚的收入使他可以過(guò)舒服的生活。
- Centroid position of focal spot of laser beam with aberration 畸變光束的焦斑質(zhì)心位置
- He cooked the pasta in a large pan of boiling water. 他用一大鍋開(kāi)水煮義大利面食。