公开(公告)号：EP0942607A3

公开(公告)日：2001-03-07

申请号：EP99301836.5

申请日：1999-03-11

申请人： SONY CORPORATION

发明人： Okano, Tadashi, Intellectual Property Department ,  Hashimoto, Kunika, Intell. Property Department

IPC分类号： H04N5/74 ,  H04N5/253 ,  H04N3/40

CPC分类号： H04N3/40 ,  G03B21/40

摘要： A luminous source apparatus, an image projecting apparatus, and an image projection converting apparatus are provided, which reduce intensity variations in a projected image, or an electronic image obtained through electronization of the projected image. A photosensor detecting the light-emission quantity from a light-emission lamp is preferably set up, m order to regulate the current supplied with the light-emission lamp from a power according to a light-quantity detecting signal from the photosensor, so as to make the light-emission quantity from the light-emission lamp constant. Projected light-quantity onto a movie film can be regulated and an image obtained from a shooting section becomes an image having a good quality with little flicker.