SNYPRalignment is a bowstring mounted Optical Diffraction Alignment Lens (patent pending) for precise arrow alignment with a compound bow and a fiber optic front sight.   It replaces the conventional peep sight and is mounted in the same split bow string configuration.   The  optical diffraction alignment lens embodied in SNYPRalignment forms a virtual aperture through the center of the tip of the front sight fiber optic pin thereby providing to the  aiming eye of the archer (see above photograph) when at full-draw of the arrow and aligned on target, an unobstructed view through the center of the tip of the fiber optic pin directly to the intended impact point on target.

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                             Center-aligned                                                                                           Off-center aligned

The plus-sign virtual aperture image indicates the relative degree of both horizontal and vertical alignment with the viewed  symmetry of the virtual image.

No other bowstring mounted device on a compound bow with a front sight fiber optic pin provides similar precise on-target alignment verification.