| 摘要 |
PURPOSE: An optical isolating filter having asymmetrical transmittance is provided to improve a contrast ratio by minimizing brightness reduction. CONSTITUTION: An optical shielding filter is comprised of a lens array(200) and a mask pattern(300). The lens array(300) is formed into two dimensional structure by connecting more than two base lens. The mask pattern has a two dimensional structure by arranging a mask to be separated from the rear side of the base lens. The mask is corresponded to the basic lens one by one.
|
