发明名称 |
Sighting optics including an optical element having a first focal length and a second focal length and methods for sighting |
摘要 |
Sighting optics include a front sight and a rear sight positioned in a spaced-apart relation. The rear sight includes an optical element having a first focal length and a second focal length. The first focal length is selected so that it is about equal to a distance separating the optical element and the front sight and the second focal length is selected so that it is about equal to a target distance. The optical element thus brings into simultaneous focus for a user images of the front sight and the target.
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申请公布号 |
US8000010(B2) |
申请公布日期 |
2011.08.16 |
申请号 |
US20070831581 |
申请日期 |
2007.07.31 |
申请人 |
BATTELLE ENERGY ALLIANCE, LLC |
发明人 |
CRANDALL DAVID LYNN |
分类号 |
G02B5/18 |
主分类号 |
G02B5/18 |
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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