公开(公告)号：US3663390A

公开(公告)日：1972-05-16

申请号：US3663390D

申请日：1970-09-24

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： FERGASON JAMES L ,  GOLDBERG NEWTON N

IPC: G01T1/04 ,  B01J1/10

CPC classification number: G01T1/04

Abstract: Increasing dosages of X-ray radiation progressively lower the color-play range of cholesteric-phase liquid-crystal materials. The effect is enhanced when an effective amount of an iodinecontaining compound is used in the liquid-crystal material. Novel iodine-containing compounds are described, and articles are disclosed that give direct reading indication of the dosage of Xray radiation that they have received, without need for a separate development operation.

Abstract translation: 增加X射线辐射剂量会逐渐降低胆甾相液晶材料的色彩范围。 当在液晶材料中使用有效量的含碘化合物时，效果得到提高。 描述了新的含碘化合物，并且公开了给出它们已经接收的X射线辐射剂量的直接读取指示的物品，而不需要单独的显影操作。

公开(公告)号：US3114836A

公开(公告)日：1963-12-17

申请号：US1270360

申请日：1960-03-04

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： FERGASON JAMES L ,  VOGL THOMAS P ,  MAX GARBUNY

IPC: G01J5/48 ,  G02B23/12

CPC classification number: G02B23/12 ,  G01J5/48