Accession Number:

ADD005604

Title:

Narrow Angle, Narrow Bandwidth Optical Receiver System.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s):

• Ferguson,Gerald D.

Report Date:

1978-06-06

Pagination or Media Count:

6.0

Abstract:

A narrow angle, narrow bandwidth optical receiver system for detecting light rays reflected from a predetermined area illuminated by a laser beam having a known wavelength. A large collecting lens having a small field of view receives incoming reflected rays which are collimated by a pair of relay lenses having a narrow bandwidth, triple cavity, single element interference filter positioned therebetween. The filtered rays are processed by a photomultiplier tube and a CRT display to illustrate signals of interest within the illuminated area. An alternate embodiment provides a cone element to receive filtered rays from relay lenses for decreasing the size of the receiver system. Author

Descriptors:

• *Patents
• *Optical equipment
• *Receivers
• *Laser beams
• Narrowband
• Optics
• Signals

Subject Categories:

• Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE