公开(公告)号：EP0117604A2

公开(公告)日：1984-09-05

申请号：EP84300191.8

申请日：1984-01-12

申请人： SONY CORPORATION

发明人： Murano, Kanji c/o Patent Division ,  Nishigaki, Susumu c/o Patent Division ,  Himuro, Masami c/o Patent Division ,  Watanabe, Yoshihisa c/o Patent Division

IPC分类号： G02F1/05 ,  G02F1/055

CPC分类号： G02F1/055

摘要： n electro-optical light shutter (3) includes a ceramic body (6) exhibiting electro-optical effect and a pair of electrodes (4, 5) for applying A.C. voltage to the ceramic body (6) to control the electro-optical effect. The ceramic body (6) is formed of PLZT ceramic having a memory effect at room temperature and which loses the memory effect at an elevated operating temperature caused by application of A.C. voltage to the ceramic body (6). Additionally, a heater (51) may be used to raise the operating temperature of the ceramic body (6).

公开(公告)号：EP0117604B1

公开(公告)日：1990-10-24

申请号：EP84300191.8

申请日：1984-01-12

申请人： SONY CORPORATION

发明人： Murano, Kanji c/o Patent Division ,  Nishigaki, Susumu c/o Patent Division ,  Himuro, Masami c/o Patent Division ,  Watanabe, Yoshihisa c/o Patent Division

IPC分类号： G02F1/05 ,  G02F1/055

CPC分类号： G02F1/055