| 发明名称 |
Device for observing the sun's backscattered image on a screen |
| 摘要 |
A device for the observation of passages on the sun of Venus and Mercury and more generally for observation of the solar disk by back projection of the solar image on a screen that also forms a sun screen for the protection of the eyes.
|
| 申请公布号 |
US2004169839(A1) |
申请公布日期 |
2004.09.02 |
| 申请号 |
US20040480481 |
申请日期 |
2004.04.14 |
| 申请人 |
GAY JEAN |
发明人 |
GAY JEAN |
| 分类号 |
G02B23/02;G02B23/20;G02B27/04;(IPC1-7):G01C3/00;G01C3/08;G01C5/00 |
主分类号 |
G02B23/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
