Patent ID: 7068875
Filing Date: 2006-06-27
Classification: G02B,G02F,Y10S

Abstract:
1. A display unit comprising: an optical waveguide for receiving light containing a specific polarized light component as incident light; a light emergence portions crossing said optical waveguide; and an optical switch, disposed between said waveguide and said light emergence portion, for making at least a portion of said incident light selectively emergent from said optical waveguide to said light emergence portion; wherein said optical switch has a light transmissive stacked structure including a function layer for selective emergence of said incident light; and letting Δn be a difference between a refractive index n the functional layer of said optical switch has a length, L, in the longitudinal direction of the optical waveguide and said optical waveguide has a thickness in a range of 0.05·L μm to 0.2·L μm.