the use of line-plane-switching infrared fiber bundle to achieve wide field of view push-broom infrared imaging has been studied with experiment. in this technology, the linear array end of the imaging fiber bundle is used as a long-linear array infrared detector, and the plane array end of the bundle is coupled by a mature small scale infrared focal plane array (irfpa). it can evade the difficulty of getting the long-linear array infrared detector directly, and has a signally significance to the development of internal infrared imaging technology. based on the introduction of the composition, working principle of this novel infrared optical system, the system principle-demonstrating experiment has been accomplished. the line-plane-switching fiber bundle used in this experiment is 64×9 format plane array and 192×3 format linear array. it is made from chalcogenide glass fibers, possessing core (as40s59.5se0.5) of 45 μm, cladding (as40s60) of 5 μm, and error of 1% in diameter. perfect imaging results prove that this novel technology is feasibility and superiority. the analysis of the experiment makes a foundation for the subsequent further verification experiments. © 2016 spie.