Sighting optics including an optical element having a first focal length and a second focal length and methods for sighting
Patent
·
OSTI ID:1176434
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.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC07-05ID14517
- Assignee:
- Battelle Energy Alliance, LLC (Idaho Falls, ID)
- Patent Number(s):
- 8,000,010
- Application Number:
- 11/831,581
- OSTI ID:
- 1176434
- Country of Publication:
- United States
- Language:
- English
Resolving Power of a Zone Plate*
|
journal | January 1967 |
Zone Plates and Their Aberrations
|
journal | January 1972 |
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