Mr. Thomas Wayne Chapman Profile

Thomas Wayne Chapman

at Defence Science and Technology Organisation

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Proceedings Article | 26 April 2007 Paper

The off-axis viewing device: a rifle-mounted sighting system for search and engagement from covered positions

Thomas Chapman, Christopher Brady

Proceedings Volume 6558, 655805 (2007) https://doi.org/10.1117/12.726331

KEYWORDS: Weapons, Firearms, Defense and security, Head, Mirrors, Cameras, Image transmission, Imaging systems, System integration, Eye

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Soldiers involved in urban operations are at a higher risk of receiving a bullet or fragment wound to the head or face compared to other parts of their body. One reason for this vulnerability is the need for the soldier to expose their head when looking and shooting from behind cover. Research conducted by DSTO Australia, using weapon-mounted cameras, has validated the concept of off-axis shooting but has emphasized the requirement for a system that closely integrates with both the soldier and his weapon. A system was required that would not adversely effect the usability, utility or accuracy of the weapon. Several Concept Demonstrators were developed over a two-year period and the result of this development is the Off-Axis Viewing Device (OAVD). The OAVD is an un-powered sighting attachment that integrates with a red dot reflex sight and enables the soldier to scan for and engage targets from a position of cover. The image from the weapon's scope is transmitted through the OAVD's periscopic mirror system to the soldier. Mounted directly behind the sight, the OAVD can also be swiveled to a redundant position on the side of the weapon to allow normal on-axis use of the sight. The OAVD can be rotated back into place behind the sight with one hand, or removed and stored in the soldier's webbing. In May 2004, a rapid acquisition program was initiated to develop the concept to an in-service capability and the OAVD is currently being deployed with the Australian Defence Force.

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