Apparatus for increasing the visual perception of objects selected in recreational activities and sports

摘要

Invention patent for b "device to increase the visual perception of objects selected in recreational activities and sports" d .To increase the perception of a tennis ball yellow (706) while playing or watching a tennis match.The game is seen through an optical filter mounted between the participant (704) or spectator (708), and the ball (706).The optical transmittance filter is pre determined with a pronounced peak centered substantially around 500 to 600 nm.That is a high percentage of the incident light reflected and fluorescida by the tennis ball (706), but is substantially less than a percentage of light in the remaining portion of the visible spectrum.