镜头式光幕靶

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镜头式光幕靶

本发明是镜头式光幕靶，涉及外弹道测试，特别涉及曳光弹和脱壳弹的速度测量。

总体由一对测试靶体、测时仪和计算机构成，测试靶体为光源与接收装置合一的整体装置，单个测试靶体有靶架以及相对安装在靶架上的发射和接收装置，发射装置由发光二极管阵列构成光源组，光源组下设发射光阑；接收装置至少包含有一套镜头组，一套镜头组是在光学镜头下方依次装有反光镜、接收光阑和光电探测器。发射和接收光阑均为狭缝光阑。本发明从结构上保证了发射和接收光阑处于同一平面内，自动对准，简化了测试前繁杂的设备安装和调校程序；扩大了有效视场范围，增大了探测视场而不增加幕厚；解决了大靶面对大口径曳光弹和脱壳弹测量的难题；抗干扰。

Lens-type light screen target

The invention provides a lens-type light screen target, and relates to an externalballistic test, in particular to speed measurement of tracer bullets and sabotdiscarding bullets. The lens-type light screen target is overall constituted bya pair of testing target bodies, a time-measuring instrument and a computer;the testing target bodies are integral devices combining light sources andreceiving devices; each testing target body comprises a target frame, an emittingdevice and the receiving device, wherein the emitting device and the receivingdevice are mounted on the target frame oppositely; each emitting device is composedof a light source set constituted by a light emitting diode array, and an emittingaperture arranged below the light source set; the receiving device at leastcomprises a lens set, and each lens set comprises a reflective mirror, areceiving aperture and a photoelectric detector which are sequentially mountedbelow an optical lens; and the emitting apertures and the receiving aperturesare both slit apertures. According to the lens-type light screen target, it isstructurally ensured that the emitting apertures and the receiving aperturesare located in the same plane, automatic alignment is achieved, and complex equipmentmounting and adjusting programs before testing are simplified; the effective fieldrange is expanded, and the detecting field of view is enlarged without increasingof the screen thickness; the problem of measuring of the large-diameter tracerbullets and sabot discarding bullets through a large target surface on issolved; and anti-interference is achieved.