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澳大利亚防务科学技术机构的地面作战分部已经与澳大利亚部队开发了一种光学瞄准具附件，它能使射手在掩蔽物后面观察和射击目标。
目前，初期生产的离轴式观察装置（OAVD）是一种与装在支座上的光学瞄准具相配的小型观察器，它能将透过物镜的目标图像折射50°到视线方向，再提供给射手。这就能使射手的头部和上身离开火线。
澳大利亚部队将在标准F88斯太尔5.56毫米突击步枪、F89米尼米5.56毫米轻型支援武器和M45.56毫米卡宾枪上采用离轴式观察装置。
2005年初由澳大利亚陆军提出并专门为城市环境内下车作战和快速捕获目标而开发了离轴观察装置，它能加长眼睛观察时间并能使射手在墙、障碍物后面或绕过墙角处观察目标。
离轴式观察装置从一开始就打算作为摄像机和显示系统的替代物，这就需要电池电源并需以电缆将观察装置与战士携带的电池相连。离轴式观察装置是一套单独的设计项目，补充上现有的轻武器附件就可形成战士用的部分标准附件。重约0.5千克、150毫米长的离轴式观察装置可以背带携带或留在瞄准具上，不会影响武器的平衡及使用。
离轴式观察装置经过密封能防水、防尘，是具有两个椭圆形反射镜组成的光学系统，观察目标更为直观，与电子系统相比也更为准确。将枪托抵在肘弯处，同时枪与人体呈三角形，这样可呈现稳定的瞄准和射击姿势。
离轴式观察装置也能由不熟练的射手单独使用。当不用时，可从主瞄准具上快速拆下或移开。
The Land Operations Division of Australia′s Defence Science and Technology Organisation（DSTO）has developed an optical sight attachment for Australian forces that allows the shooter to view and fire at targets from behind cover.
Currently in initial production, the Off-Axis Viewing Device（OAVD）is a small viewing unit that mates with a weapon′s existing receive-mounted optical sight and provides an image of the target transmitted through the scope and reflected 50°to the line-of-sight back to the firer. This enables the head and upper torso to be removed away from the line of fire.
Australian forces will use the OAVD on the standard issue F88 Steyr5.56mm light support weapon and the M45.56mm carbine.
Developed specifically for dismounted operations in urban environments and the subject of a rapid acquisition by the Australian Army initiated early in 2005,the OAVD features longer-than-normal eye relief and permits the firer to scan a target from behind walls, obstacles and around corners.
lntended from the outset as an alternative to camera and display systems, which rely on battery power and are tethered by cables to the soldier, the OAVD is a standalone item designed to form part of a soldier′s standard toolkit by complementing the range of small arms attachments currently in use. As such, the OAVD, which weighs around 500 g and measures 150 mm in length, can be carried on webbing or left attached to the sight without impacting adversely on the weapon′s balance and handling.
Sealed from water and dust, and employing an optics system consisting of two oval-shaped mirrors to transmit the sight picture to the firer, the OAVD is designed to be intuitive to use and more accurate than electronic systems. A stable aiming and shooting posture is assumed by placing the butt of the rifle in the crook of the elbow and triangulating the position of the rifle to the body.
The OAVD is also able to be operated solely with the non-master hand and can be quickly disengaged（rotated away）from the main sight when not in use.
[编辑/祝翠]
目前，初期生产的离轴式观察装置（OAVD）是一种与装在支座上的光学瞄准具相配的小型观察器，它能将透过物镜的目标图像折射50°到视线方向，再提供给射手。这就能使射手的头部和上身离开火线。
澳大利亚部队将在标准F88斯太尔5.56毫米突击步枪、F89米尼米5.56毫米轻型支援武器和M45.56毫米卡宾枪上采用离轴式观察装置。
2005年初由澳大利亚陆军提出并专门为城市环境内下车作战和快速捕获目标而开发了离轴观察装置，它能加长眼睛观察时间并能使射手在墙、障碍物后面或绕过墙角处观察目标。
离轴式观察装置从一开始就打算作为摄像机和显示系统的替代物，这就需要电池电源并需以电缆将观察装置与战士携带的电池相连。离轴式观察装置是一套单独的设计项目，补充上现有的轻武器附件就可形成战士用的部分标准附件。重约0.5千克、150毫米长的离轴式观察装置可以背带携带或留在瞄准具上，不会影响武器的平衡及使用。
离轴式观察装置经过密封能防水、防尘，是具有两个椭圆形反射镜组成的光学系统，观察目标更为直观，与电子系统相比也更为准确。将枪托抵在肘弯处，同时枪与人体呈三角形，这样可呈现稳定的瞄准和射击姿势。
离轴式观察装置也能由不熟练的射手单独使用。当不用时，可从主瞄准具上快速拆下或移开。
The Land Operations Division of Australia′s Defence Science and Technology Organisation（DSTO）has developed an optical sight attachment for Australian forces that allows the shooter to view and fire at targets from behind cover.
Currently in initial production, the Off-Axis Viewing Device（OAVD）is a small viewing unit that mates with a weapon′s existing receive-mounted optical sight and provides an image of the target transmitted through the scope and reflected 50°to the line-of-sight back to the firer. This enables the head and upper torso to be removed away from the line of fire.
Australian forces will use the OAVD on the standard issue F88 Steyr5.56mm light support weapon and the M45.56mm carbine.
Developed specifically for dismounted operations in urban environments and the subject of a rapid acquisition by the Australian Army initiated early in 2005,the OAVD features longer-than-normal eye relief and permits the firer to scan a target from behind walls, obstacles and around corners.
lntended from the outset as an alternative to camera and display systems, which rely on battery power and are tethered by cables to the soldier, the OAVD is a standalone item designed to form part of a soldier′s standard toolkit by complementing the range of small arms attachments currently in use. As such, the OAVD, which weighs around 500 g and measures 150 mm in length, can be carried on webbing or left attached to the sight without impacting adversely on the weapon′s balance and handling.
Sealed from water and dust, and employing an optics system consisting of two oval-shaped mirrors to transmit the sight picture to the firer, the OAVD is designed to be intuitive to use and more accurate than electronic systems. A stable aiming and shooting posture is assumed by placing the butt of the rifle in the crook of the elbow and triangulating the position of the rifle to the body.
The OAVD is also able to be operated solely with the non-master hand and can be quickly disengaged（rotated away）from the main sight when not in use.
[编辑/祝翠]