VARIFOCAL RENS, DIPLAY APPARATUS AND DISAPLAY METHOD USING THE SAME

摘要

A varifocal lens includes: a plurality of micro lenses to which light comes in; a plurality of first micro prisms each of which is placed corresponding to each micro lens and changes the path of an incident light from the corresponding micro lens based on a preset first angle in a first direction; and a plurality of second micro prisms each of which is placed corresponding to each micro prism and changes the path of the incident light from the corresponding first micro prism based on a pre-set second angle in a second direction which is vertical to the first direction. The focus of each micro lens, the first angle of each first micro prism, and the second angle of each second micro prism are adjusted to gather the incident light into all the micro lenses to one point. [Reference numerals] (AA) Focus