In various embodiments, a lens array comprises a plurality of aspheric lens elements each optically coupled to a light-emitting element and producing an out-of-focus image thereof. The system includes an image system comprising a video source that is configured to capture sequential frames of image data of non-visible light and at least one processor configured as an image processing system. The case includes a first opening for receiving the breather conduit, and a second opening for receiving the intake conduit. The tuning key is mounted on a pivotable lever. The pressing member presses a portion of the belt member that is located between the first and second opposing members from an outer surface side of the belt member toward an inner face side of the belt member. Methods of using such interactive prayer systems are also provided.