Sighting optics including an optical element having a first focal length and a second focal length
Abstract
One embodiment of sighting optics according to the teachings provided herein may include a front sight and a rear sight positioned in 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.
- Inventors:
-
- Idaho Falls, ID
- Issue Date:
- Research Org.:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1024207
- Patent Number(s):
- 8000011
- Application Number:
- 12/785,892
- Assignee:
- Battelle Energy Alliance, LLC (Idaho Falls, ID)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F41 - WEAPONS F41G - WEAPON SIGHTS
G - PHYSICS G02 - OPTICS G02B - OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- DOE Contract Number:
- AC07-05ID14517
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION
Citation Formats
Crandall, David Lynn. Sighting optics including an optical element having a first focal length and a second focal length. United States: N. p., 2011.
Web.
Crandall, David Lynn. Sighting optics including an optical element having a first focal length and a second focal length. United States.
Crandall, David Lynn. Mon .
"Sighting optics including an optical element having a first focal length and a second focal length". United States. https://www.osti.gov/servlets/purl/1024207.
@article{osti_1024207,
title = {Sighting optics including an optical element having a first focal length and a second focal length},
author = {Crandall, David Lynn},
abstractNote = {One embodiment of sighting optics according to the teachings provided herein may include a front sight and a rear sight positioned in 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {8}
}
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Works referenced in this record:
Resolving Power of a Zone Plate*
journal, January 1967
- Stigliani, Daniel J.; Mittra, Raj; Semonin, Richard G.
- Journal of the Optical Society of America, Vol. 57, Issue 5
Zone Plates and Their Aberrations
journal, January 1972
- Young, M.
- Journal of the Optical Society of America, Vol. 62, Issue 8, p. 972-976