Accession Number:

ADD002130

Title:

Three 'D' Weapons Sight.

Descriptive Note:

Patent,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s):

• Rymes,William H.

Report Date:

1974-09-03

Pagination or Media Count:

4.0

Abstract:

The patent concerns an improved sighting device for projectile launchers that are mounted on a moving vehicle. It includes a dual parabolic visor slidably positioned on a helmet. The visor is in the form of two parabolas and when locked in position, one parabola is in front of each eye of the wearer. The focal point of each parabola is at a prescribed point on the upper leading edge of the helmet opening. Fiber optic bundles, located at each focal point are connected to cathode-ray tubes and project a series of dots on to the visor in front of each eye of the wearer to simulate, in three dimensions, the trajectory of a projectile, if the rpojectile were fired at any given time.

Descriptors:

• *Patents
• *Fire control systems
• *Optical sights
• *Stereoscopic display systems
• Aiming
• Target acquisition
• Projectile trajectories
• Computer graphics
• Cathode ray tubes
• Launching
• Guided missiles
• Fiber optics
• Helmets

Subject Categories:

• Fire Control and Bombing Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE