A dynamic proxy object is disclosed that is capable of intercepting calls from a calling object to a target object. These amplitude and phase measurements are used to create a phase-amplitude trajectory in phase amplitude space, which may be finely divided to distinguish among a number of different types of components. The channel has an open end and an inner surface comprised of a substantially planar bottom wall, an inner sidewall and an outer sidewall. The LEDs are positioned such that one LED and the collimator are at a constant angle and separated by a constant focal distance for each collimator position.