照明光束 meaning in English

illumination ray

The recording system has been formed as in - line holography and only a single beam is used for recording , so an antivibration arrangement is not required
该记录系统仅需一束照明光束，记录过程不需特定的防震装置。
This method has some characters : during recording of the transmissive holograms the holographic grating placed in front of the holographic plate closefittingly is used as a spectroscope . the transmissive wave is served as the object wave and the diffraction wave through the holographic grating or the deflective reflect wave produced by the silicon slice is served as the reference wave , therefore the hologram is named as self - reference image hologram . the recording results are the off - axis holograms and the twin images can be separated successfully
在记录透射型全息图时，将全息光栅紧贴置于记录干板之前，而光栅起到了分光的作用，直透波作为全息图的物光波，参考光是物光通过光栅后产生的衍射波；记录反射型全息图时将硅片置于记录干板之后，利用反射硅片产生离轴参考光，因此系统仅需一束照明光束，参考光来自物光本身，因此称之为自参考像全息图。