Abstract: A test source that combines infrared energy and visible light to produce a uniform output of energy in the visible and infrared spectra is disclosed. The test source includes an infrared energy source and a visible light source. The infrared energy source has a white coating thereon. The visible light source emits visible light onto the infrared light source, which generates a combination of infrared energy and visible light outwardly into the surrounding atmosphere.

Abstract: A target placement apparatus having the facility to select targets with apertures of various sizes and monitor their temperature by pressing them against a framework. The apparatus is adapted to place targets at the objective plane in an infrared sensitivity or calibrator. The apparatus comprises a magazine-like storage means for storing a plurality of target plates, preferably soaking at ambient temperature, and a mechanical arrangement for removing a selecting one of the target plates from the storage means and precisely placing it at the objective plane. The arrangement for removing a selected target plate from storage and placing it in the proper position includes a movable mechanical arm having a simplified wrist action which positively and reliably operates to remove a selected target plate from the storage means and swing the target plate into an indexed position within a window area of a surrounding high mass framework.