<p>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 ligh t transmission for colors having wavelengths over 500 nanometer such as the light reflected by vegetation and transmits colors having shorter wavelengths such as reflected by the bal l. The filter is worn in an eyeglass frame.</p>
申请公布号
CA2314137(C)
申请公布日期
2007.09.18
申请号
CA20002314137
申请日期
2000.07.14
申请人
LESLIE, SCOTT P.A.;CHAPMAN, THOMAS J.;GIBB, ROBERT A.
发明人
LESLIE, SCOTT P.A.;CHAPMAN, THOMAS J.;GIBB, ROBERT A.