发明名称 |
SAFETY DEVICE FOR TELESCOPE |
摘要 |
<p>A ray of light incident via a pin hole (6) and a field stop (7) having a field of vision a predetermined angle larger than a telescope's actual field of vision that are disposed on an axis (5) in parallel to the optical axis (4) of the telescope is measured in intensity by a photoelectric element (8). When a quantity of light incident on the photoelectric element is larger than a predetermined quantity of light, a shutter (11) is inserted into an optical path of the telescope to cut off a ray of light going into the eyes of the observer. Since an incidence of a quantity of light in excess of a predetermined one into a field of vision a predetermined angle larger than the actual field of vision of the telescope will block the optical path of the telescope, a risk such as damage to the eyes of the observer can be eliminated to prevent an accident even when the observer erroneously observes a strong light-generating object such as the sun. <IMAGE></p> |
申请公布号 |
EP1209505(A1) |
申请公布日期 |
2002.05.29 |
申请号 |
EP20000955006 |
申请日期 |
2000.08.25 |
申请人 |
KOWA KABUSHIKI KAISHA |
发明人 |
NIINO, MASAO;GOTO, YOSHIHIDE;IIYAMA, SHIROH |
分类号 |
G02B23/00;G02B26/02;(IPC1-7):G02B23/00 |
主分类号 |
G02B23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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