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Title: Sighting optics including an optical element having a first focal length and a second focal length

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:
 [1]
  1. Idaho Falls, ID
Issue Date:
OSTI Identifier:
1024207
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID) IDO
Patent Number(s):
8,000,011
Application Number:
12/785,892
Contract Number:
AC07-05ID14517
Research Org:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION