Television image target simulator based on the Digital Micromirror Device (DMD) is required to test and evaluate the imaging system of a varying field of view. The design of the zoom collimator for projection is introduced. The zoom system uses a reimaging configuration and switches the lenses to zoom. The aspheric surfaces are used in the optics to improve the image quality and simplify the optics configuration. The light source reflected to the DMD by the Total Internal Reflection prisms (TIR). The optics operates over the near infrared waveband. The long entrance pupil relief of the zoom system provides the sufficient space to place the simulator and the seeker while matching the pupil of the zoom optics and the seeker optics. The optical system zooms at the constant relative aperture. The performance of the optics meets the requirement of the simulator.