Accession Number:

ADD019853

Title:

Variable Focus Adapter

Descriptive Note:

Patent, filed 11 Jul 1995, patented 1 Apr 1997

Corporate Author:

NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD

Report Date:

1997-04-01

Pagination or Media Count:

8.0

Abstract:

A variable focus adapter is disclosed that comprises the combination of a lens and an aperture provided by a plate all lodged in a housing that is placed so that the lens is in proximity with each objective lens of a binocular arrangement to change the focal range from greater than 20 ft. to seven 7 ft. with a depth of field spanning from 5 to 15 ft.

Subject Categories:

  • Optical Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE