Optical diffraction alignment lens

摘要

The invention is an Optical Diffraction Alignment Lens, incorporating a symmetric planar-array of pin-hole apertures, installed in a split bowstring configuration replacing the conventional peep sight on a tuned compound bow with a front sight fiber optic pin, providing to the archer a virtual aperture through the fiber optic pin tip as a precise alignment and aiming system for the arrow flight path to target. The Optical Diffraction Alignment Lens, the center of which is positioned in the vertical plane centered on the arrow flight path and fixed relative to the arrow nock end, presents to the aiming eye of the archer, a well-defined virtual aperture image in the tip of the front fiber optic pin, as a centered point of alignment, that is centered by the archer in the line-of-sight which the archer aligns through the virtual aperture to the impact point on target.

主权项

1. An optical diffraction alignment lens for attachment to a bow string of a compound archery bow and for use with a monochromatic front sight fiber optic pin that emits monochromatic light mounted onto the bow for aligning the bow at a target reflecting light, the lens comprising a disk with a side with opposing indentations for attachment to bow string strands, a front face, a rear face parallel to the front face and separated from the front face by a depth, a solid and opaque center, and a symmetrical planar array of four substantially-identical apertures that are equidistant from and equally spaced circumferentially about the solid and opaque center point, that are orthogonal to the front face and the rear face, and that extend from the front face to the rear face with a constant cross section, such that monochromatic light from the monochromatic front sight fiber optic pin and light reflected from the target form a symmetrical image containing a clear line of sight to the on-target impact point of the arrow along with a symmetrical pattern of monochromatic light visible to an archer drawing the bow when the bow is in precise alignment.