Accession Number:

ADD009513

Title:

Fresnel Lens in an Improved Infinity Image Display System.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1982-05-20

Pagination or Media Count:

15.0

Abstract:

A fresnel lens employs a design that reduces the transmission of stray light to a viewer located at its focal point, said design requiring directional undercutting of selected facets of the lens so as to align the directionally undercut nonimaging surface parallel to the viewers line of sight. The facets of the lens are arcuately shaped to yield a closer approximation to a glass lens. The lens is of particular use in a visual image display system. Author

Subject Categories:

  • Lasers and Masers
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE