发明名称 |
Directional filter for a display screen, the method for manufacturing same and a display system, a cathode-ray tube in particular, provided with such a filter |
摘要 |
For improving the contrast of information displayed on the screen, there is placed in front of this latter a filter comprising a matrix of channels pierced in a photosensitive glass plate. The pierced plate is covered over the whole of its surface with a blackened deposit so as to reduce to the maximum its coefficient of reflection. Thus filters can be formed readily on request, according to the direction of observation in particular, with a good coefficient of transmission and improved contrast.
|
申请公布号 |
US4342821(A) |
申请公布日期 |
1982.08.03 |
申请号 |
US19800170278 |
申请日期 |
1980.07.18 |
申请人 |
THOMPSON-CSF |
发明人 |
GALVES, JEAN P.;MERLOZ, PIERRE;SAGNARD, JEAN |
分类号 |
G02B5/00;G02B5/20;G09F9/00;H01J29/89;(IPC1-7):G03C5/00;G02B27/00 |
主分类号 |
G02B5/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|