公开(公告)号：US4347785A

公开(公告)日：1982-09-07

申请号：US127431

申请日：1980-03-05

Applicant: Bryan B. Chase ,  Alberto Yi

Inventor： Bryan B. Chase ,  Alberto Yi

IPC: B41C1/04 ,  B23K26/08 ,  B23K26/14 ,  B23K9/00

CPC classification number: B23K26/0823 ,  B23K26/142 ,  B41P2227/70

Abstract: Apparatus for engraving a rotating cylinder by means of a laser, in which the laser beam is focused onto a small area of the cylinder surface by a lens, including means for defining a path for the flow of compressed air across the path of the laser beam, and a suction device communicating with the region between the lens and the cylinder for extracting air from this region, the flow of air serving to remove debris from the area being engraved and to prevent it from reaching the lens.

Abstract translation: 用于通过激光雕刻旋转圆筒的装置，其中激光束通过透镜聚焦在圆柱体表面的小区域上，包括用于限定压缩空气流过激光束路径的路径的装置 以及与透镜和气缸之间的区域连通的抽吸装置，用于从该区域提取空气，用于从被雕刻的区域去除碎屑并防止其到达透镜的空气流。

公开(公告)号：US4335939A

公开(公告)日：1982-06-22

申请号：US139627

申请日：1980-04-14

Applicant: John E. Stovell ,  John Aughton ,  Alberto Yi

Inventor： John E. Stovell ,  John Aughton ,  Alberto Yi

IPC: H04B10/00 ,  G02F1/03 ,  H04B10/04 ,  H04B10/06 ,  H04B10/142 ,  H04B10/152

CPC classification number: G02F1/0311

Abstract: An optical modulator which is capable of passing the greatest intensity of light incident upon it when the light incident upon it is either unpolarized or has a partial or variable state of polarization, comprises a beam splitter (1) to resolve the light beam incident upon it into two plane polarized components having mutually perpendicular polarization states, one or more electro-optic cell or cells (2,18,19,22,23) which is or are arranged to receive both components of the light beam and, in use change the state of polarization of both of the components to a corresponding extent in dependence upon an electrical modulation signal applied to it or them. The optical modulator also includes analyzer means (1,17) arranged to receive the output from the electro-optic cell or cells (2,18,19,22,23) the arrangement being such that the intensity of the light output from the analyzer means (1,17) is a function of the change of the state of polarization generated in both components during their passage through the electro-optic cell or cells (2,18,19,22,23). The beam splitter and the analyzer means may be formed by the same piece of apparatus (1) and in this case the modulator preferably includes a half wave plate in the light path of both components to change their polarization states.

Abstract translation: 当入射到其上的光是能够通过入射到其上的最大强度的光调制器是非偏振的或具有部分或可变的偏振状态时，包括用于分析入射到其上的光束的分束器（1） 分成具有相互垂直偏振状态的两个平面偏振分量，一个或多个电光单元（2,18,19,22,23），其被布置成接收光束的两个分量，并且在使用中改变 这两个组件的极化状态依赖于施加到其上的电调制信号到相应的程度。 光学调制器还包括分析器装置（1,17），其布置成接收来自电光单元（2,18,19,22,23）的输出，该装置使得从分析器输出的光的强度 手段（1,17）是在两个部件通过电光电池或电池（2,18,19,22,23）期间在两个部件中产生的极化状态的变化的函数。 分束器和分析器装置可以由相同的装置（1）形成，并且在这种情况下，调制器优选地包括两个部件的光路中的半波片，以改变它们的极化状态。

公开(公告)号：US4087672A

公开(公告)日：1978-05-02

申请号：US703196

申请日：1976-07-07

Applicant: Alberto Yi

Inventor： Alberto Yi

IPC: B23K26/00 ,  B23K26/03 ,  B23K26/08 ,  B44B7/00 ,  B23K27/00

CPC classification number: B44B7/00 ,  B23K26/03 ,  B23K26/0823 ,  B23K2201/007

Abstract: To ascertain the beam intensity threshold at which the intensity of a laser beam will just be sufficient to engrave a workpiece, the value of a beam-intensity control signal is progressively increased or decreased until engraving starts or stops, this being sensed by detecting the initiation or termination of ionization which occurs when the beam intensity is above the threshold value adjacent a part of the workpiece which is being subjected to the action of the laser beam.

Abstract translation: 为了确定激光束的强度将足以雕刻工件的光束强度阈值，光束强度控制信号的值逐渐增加或减小，直到雕刻开始或停止，这通过检测起始 或当光束强度高于邻近被处理激光束的工件的一部分的阈值时发生的电离的终止。