Patent ID: 8205999

Claim:
A multi view display comprising a light emitting element, comprising: an optical cavity formed by: a first and a second reflecting layer, at least said second reflecting layer being semi-transparent said first reflecting layer having a reflective coefficient (r 1 ) and said second reflective layer is semi-transparent having a reflective coefficient (r 2 ), and a light emitting layer arranged between said reflecting layers, said optical cavity being configured so that a resonance of light emitted by the light emitting layer causes said light to be emitted in at least two preferred viewing directions through the second reflecting layer, the at least two preferred viewing directions being at an oblique viewing angle on both sides of an axis normal to the optical cavity, wherein the light in the two preferred viewing directions has a higher intensity than light emitted in other directions, wherein an optical distance, d, between the first and second reflective layers is chosen so that a wavelength corresponding to a resonance maximum at the viewing angle is near a dominant wavelength λ o of the emitted light and an optical distance d 1 between a location of light generation in the light emitting layer and said first reflecting layer is on the order of: λ 4 ⁢ ( 1 - cos ⁢ ⁢ θ view ′ ) where λ is the wavelength of the emitted light, and θ′ view is an internal propagation angle corresponding to the viewing angle θ view , and a width of the emitted light in the viewing direction is determined based on a product of the reflective coefficients of the reflecting layers (/r 1 r 2 /) and optical distance d.