公开(公告)号：US3922689A

公开(公告)日：1975-11-25

申请号：US24884572

申请日：1972-05-01

Applicant: ZENITH RADIO CORP

Inventor： PARK YONG S ,  PEKOSH RAYMOND J

IPC: H01J9/227 ,  G03B41/00

CPC classification number: H01J9/2272

Abstract: An exposure chamber for exposing a photosensitive coating on the target surface of a color picture tube comprises means for supporting the face panel and an aperture mask in a parallel spaced and confronting relation transversely of the reference axis of the chamber. An optical system comprises a primary light source and a virtual light source, the latter including a collimator having a light emitter for irradiating the target surface through the aperture mask from a position offset from the center of the target. The emitter thus normally projects a nonuniform intensity distribution pattern and is surrounded by a light stop selectively masking a portion of the emitter to control the intensity distribution pattern of light impinging upon the target surface.

Abstract translation: 用于将彩色显像管的目标表面上的感光涂层曝光的曝光室包括用于以与腔室的参考轴线相对的平行间隔且相对的关系支撑面板和孔掩模的装置。 光学系统包括初级光源和虚拟光源，后者包括具有光发射器的准直器，用于从偏离靶的中心的位置通过孔径掩模照射目标表面。 因此，发射器通常会突出不均匀的强度分布图案，并且被遮光器包围，选择性地掩蔽发射器的一部分以控制照射在目标表面上的光的强度分布图案。

公开(公告)号：US3588567A

公开(公告)日：1971-06-28

申请号：US3588567D

申请日：1970-03-23

Applicant: ZENITH RADIO CORP

Inventor： MACLEAN GERALD K ,  PEKOSH RAYMOND J

IPC: H01J29/06 ,  H01J1/53

CPC classification number: H01J29/06

Abstract: AN ELECTRON SHIELD FOR A SHADOW-MASK TYPE OF COLOR TUBE BRIDGES THE SPACE BETWEEN THE MASK FRAME AND THE TUBE ENVELOPE. THE ELECTRON SHIELD IS COMPRISED OF A PLURALITY OF SEGMENTS EACH SEGMENT HAVING ONE END WHICH IS CURVED TO CONFORM TO THE INSIDE CONTOUR OF THE ENVELOPE CORNER IN WHICH IT IS PLACED. THE OTHER END OF EACH SHIELD SEGMENT IS STRAIGHT AND SLIGHTLY OVERLAPS THE CURVED END OF THE PREVIOUSLY PLACED SEGMENT.