BALL DETECTION VIEWER WITH SIDE SHIELDS

摘要

The optical filter enhances the perception of a stationary white object such as a golf ball to help a user to locate a lost object. The filter attenuates light transmission for colours having wavelengths over 500 nanometer such as the light reflected by vegetation and transmits colours having shorter wavelengths such as reflected by the ball. The filter is worn in an eyeglass frame with opaque side shields that force the user to utilise a high visual acuity portion of their sight when the move their head from side to side.