公开(公告)号：US5508734A

公开(公告)日：1996-04-16

申请号：US281331

申请日：1994-07-27

申请人： Robert G. Baker ,  Kevin Kettler ,  Gustavo A. Suarez ,  Kenneth A. Uplinger ,  Candace J. F. Freedenberg

发明人： Robert G. Baker ,  Kevin Kettler ,  Gustavo A. Suarez ,  Kenneth A. Uplinger ,  Candace J. F. Freedenberg

IPC分类号： G03B15/00 ,  G02B3/00 ,  G02B6/04 ,  G02B6/06 ,  G02B13/04 ,  G02B13/06 ,  G02B13/16 ,  G03B19/00 ,  G06T1/00 ,  H04N5/225 ,  H04N5/232 ,  H04N5/262 ,  H04N7/14 ,  H04N7/15 ,  H04N7/18

CPC分类号： H04N7/142 ,  G02B13/06 ,  G02B3/0087 ,  G02B6/04 ,  G02B6/06 ,  H04N5/2628 ,  H04N7/15

摘要： A system for electronic imaging of a hemispheric field of view includes a camera for receiving optical images of the field of view and for producing output data corresponding to the optical images. The camera includes an optical assembly for producing images throughout a hemispheric field of view for optical conveyance to an imaging device or photographic film. The optical system assembly has lens components that selectively emphasize the peripheral content of the hemispheric field of view. An electronic imaging device within the camera or a film-to-digital date conversion system provides digitized output signals to input image memory or electronic storage devices. A transform processor selectively accesses and processes the digitized output signals from the input image memory according to user-defined criteria and stores the signals in output image memory. The signals in the output image memory can then be displayed according to the user-defined criteria.

摘要翻译： 用于半球视场的电子成像系统包括：摄像机，用于接收视野的光学图像，并产生对应于光学图像的输出数据。 相机包括用于在整个半球视野内产生图像以用于光学传输到成像装置或摄影胶片的光学组件。 光学系统组件具有选择性地强调半球视野的周边内容的透镜部件。 相机内的电子成像设备或电影数字日期转换系统向输入图像存储器或电子存储设备提供数字化的输出信号。 变换处理器根据用户定义的标准选择性地访问和处理来自输入图像存储器的数字化输出信号，并将该信号存储在输出图像存储器中。 然后可以根据用户定义的标准显示输出图像存储器中的信号。

公开(公告)号：US5609780A

公开(公告)日：1997-03-11

申请号：US337799

申请日：1994-11-14

申请人： Candace J. F. Freedenberg ,  Joshua M. Cobb ,  Uldis A. Ziemins

发明人： Candace J. F. Freedenberg ,  Joshua M. Cobb ,  Uldis A. Ziemins

IPC分类号： B23K26/06 ,  B23K26/42 ,  G01J1/42

CPC分类号： G01J1/4257 ,  B23K26/066 ,  B23K26/705

摘要： A laser system which utilizes a reflective objective lens includes a closed loop servo and beam profiling system to provide improved uniformity of the laser beam impinging on the work piece. The laser beam is passed through an aperture to pattern the work piece. A beamsplitter separates the laser beam into workpiece and diagnostic beams. The workpiece and diagnostic beams are both passed through identical reflective objective lenses, to accurately measures performance of the work piece beam. Preferably, a third reflective objective lens collimates the diagnostic beam and directs it to a beam analyzer where the uniformity can be accurately assessed. The information determined by the beam analyzer is then used to position a pre-aperture converging optic (PACO) located between the laser source and the aperture. Adjustments in the x- and y-dimensions of the PACO lens change the angular uniformity at the aperture. Adjustments in the z-dimension of the PACO lens adjust the energy density delivered to the work piece. Homogenizing the laser light provides increased spatial uniformity. In one technique, a fiber optic bundle randomly redistributes the gaussian input energy to achieve spatial uniformity. Preferably, the output end of the fiber optic bundle is annular in shape, while the input end is rectangular to effectively capture light output from a laser, and prevents or reduces energy losses. In another technique, a fine mesh screen or combination of screens is inserted into the path of the laser beam prior to the aperture. The screen or combination of screens is positioned with respected to the converging lens and aperture or mask such that both spatial and angular uniformity result at the mask or aperture planed, and, hence, the work plane.

摘要翻译： 利用反射物镜的激光系统包括闭环伺服和光束分布系统，以提供冲击在工件上的激光束的改进的均匀性。 激光束通过孔径以对工件进行图案化。 分束器将激光束分离成工件和诊断光束。 工件和诊断光束都通过相同的反射物镜，以准确地测量工件梁的性能。 优选地，第三反射物镜准直诊断光束并将其引导到光束分析器，其中可以准确地评估均匀性。 然后由光束分析仪确定的信息用于定位位于激光源和光圈之间的预孔径会聚光学元件（PACO）。 PACO透镜的x和y尺寸的调整改变了孔径处的角均匀性。 PACO镜头的z维度的调节调节传递到工件的能量密度。 使激光均质化提供了增加的空间均匀性。 在一种技术中，光纤束随机地重新分布高斯输入能量以实现空间均匀性。 优选地，光纤束的输出端的形状是环形的，而输入端是矩形的，以有效地捕获从激光器输出的光，并且防止或减少能量损失。 在另一种技术中，在孔之前，将细筛网或筛网的组合插入激光束的路径中。 屏幕或屏幕的组合相对于会聚透镜和孔径或掩模被定位，使得在掩模或孔平面化以及因此工作平面上都产生空间和角均匀性。