This thesis studies a design methodology- a multiple coating surface waveguide in the field of augmented reality (AR). In fact, with its blooming developments over decades, AR has established distinguishing features that makes it widely applicable among various fields. Overlapping the virtual image onto the external view, AR has contributed to applications, such as education, medical surgery, engineering, entertainment, image-guided navigation and even military. However, there are still two major drawbacks for AR: (1) The inconvenience brought by the bulkiness of AR head mounted display (HMD) devices; (2) The limited magnitude of the field of view (FOV). To overcome the above drawbacks, we investigate a multiple coating surface waveguide that is thinner than the traditional designs of the AR HMD devices, We separate our waveguide into two parts: (1) The free-form surface collimator based on the non-pupil forming system, constructed by three high order term extended polynomial surfaces, (2) The multiple coating surface directly attached after the waveguide. Traditionally, the width of FOV relies on the size of the single couple out surface as the single surface determines all wave reflections. Our multiple coating surface allows more flexibility on the reflections of optical waves. Each coating possess a critical angle that filters and reflects the optical waves that have a matching incident angle. In other words, the optical waves with different incident angles are reflected at corresponding coating surfaces. Thus, we have achieved a large FOV with a waveguide, which thickness is estimated to be 3 mm, when compared to the traditional waveguide.