Abstract: Dual loop stabilization of video images is disclosed. In one embodiment, an apparatus includes a video camera having a first image stability control component configured to stabilize a video image in a first motion environment. A second image stability control component is coupled between the video camera and a moveable platform and is configured to stabilize the video image in a second motion environment. A motion sensing device detects movement of the video camera and transmits a control signal to adjust a stabilization response of the second image stability control component according to the movement. In some embodiments, a first amplitude range of the first motion environment is at least partially lower than a second amplitude range of the second motion environment, and a first frequency range of the first motion environment is at least partially higher than a second frequency range of the second motion environment.

Abstract: Dual loop stabilization of video images is disclosed. In one embodiment, an apparatus includes a video camera having a first image stability control component configured to stabilize a video image in a first motion environment. A second image stability control component is coupled between the video camera and a moveable platform and is configured to stabilize the video image in a second motion environment. A motion sensing device detects movement of the video camera and transmits a control signal to adjust a stabilization response of the second image stability control component according to the movement. In some embodiments, a first amplitude range of the first motion environment is at least partially lower than a second amplitude range of the second motion environment, and a first frequency range of the first motion environment is at least partially higher than a second frequency range of the second motion environment.

Abstract: In the field of optics, collimators are adapted not only for testing, calating and measuring instruments, but for target projection and simulation. The technique is to use standard targets which are commonly available as target sets, such as three-bar and area targets. Such standard targets, although in wide use, are subject to certain disadvantages, particularly when the light source is not in the human visible range. Targets used with this radiation are subject to mechanical constraints. Since, like stencils, they are dependent upon cut-outs, images formed are subject to the same limitations as stencils. That is, bands or strips must support the cut-out image. By this invention, mechanical constraints of cut-outs in targets now employed are obviated, and many of the thermal limitations of such targets are alleviated.