A lens cover that may be secured to a case of a projector is herein disclosed. The lens cover has incorporated therein a lens that may be aligned with a lens of the projector to modify the throw ratio of the projector lens.
申请公布号
US2006209271(A1)
申请公布日期
2006.09.21
申请号
US20050082589
申请日期
2005.03.17
申请人
CLARK STEPHAN R;OROSS GLEN A;ON PETER M;ESTERBERG DENNIS R
发明人
CLARK STEPHAN R.;OROSS GLEN A.;ON PETER M.;ESTERBERG DENNIS R.
