发明名称 |
Long lifetime, low intensity light source for use in nighttime viewing of equipment maps and other writings |
摘要 |
A long-lifetime light source with sufficiently low intensity to be used for reading a map or other writing at nighttime, while not obscuring the user's normal night vision. This light source includes a diode electrically connected in series with a small power source and a lens properly positioned to focus at least a portion of the light produced by the diode.
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申请公布号 |
US4409643(A) |
申请公布日期 |
1983.10.11 |
申请号 |
US19820360966 |
申请日期 |
1982.03.23 |
申请人 |
FRANK, ALAN M.;EDWARDS, WILLIAM R. |
发明人 |
FRANK, ALAN M.;EDWARDS, WILLIAM R. |
分类号 |
F21K99/00;F21L4/00;(IPC1-7):F21L7/00 |
主分类号 |
F21K99/00 |
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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